IReadOnlyDictionary<TKey, TValue> Interface
Represents a generic read-only collection of key/value pairs.
Assembly: mscorlib (in mscorlib.dll)
| Name | Description | |
|---|---|---|
![]() | Count | Gets the number of elements in the collection.(Inherited from IReadOnlyCollection<T>.) |
![]() | Item[TKey] | Gets the element that has the specified key in the read-only dictionary. |
![]() | Keys | Gets an enumerable collection that contains the keys in the read-only dictionary. |
![]() | Values | Gets an enumerable collection that contains the values in the read-only dictionary. |
| Name | Description | |
|---|---|---|
![]() | ContainsKey(TKey) | Determines whether the read-only dictionary contains an element that has the specified key. |
![]() | GetEnumerator() | Returns an enumerator that iterates through the collection.(Inherited from IEnumerable<T>.) |
![]() | TryGetValue(TKey, TValue) | Gets the value that is associated with the specified key. |
| Name | Description | |
|---|---|---|
![]() | Aggregate<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, KeyValuePair<TKey, TValue>, KeyValuePair<TKey, TValue>>) | Overloaded. Applies an accumulator function over a sequence.(Defined by Enumerable.) |
![]() | Aggregate<KeyValuePair<TKey, TValue>, TAccumulate>(TAccumulate, Func<TAccumulate, KeyValuePair<TKey, TValue>, TAccumulate>) | Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.(Defined by Enumerable.) |
![]() | Aggregate<KeyValuePair<TKey, TValue>, TAccumulate, TResult>(TAccumulate, Func<TAccumulate, KeyValuePair<TKey, TValue>, TAccumulate>, Func<TAccumulate, TResult>) | Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.(Defined by Enumerable.) |
![]() | All<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Determines whether all elements of a sequence satisfy a condition.(Defined by Enumerable.) |
![]() | Any<KeyValuePair<TKey, TValue>>() | Overloaded. Determines whether a sequence contains any elements.(Defined by Enumerable.) |
![]() | Any<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Determines whether any element of a sequence satisfies a condition.(Defined by Enumerable.) |
![]() | AsEnumerable<KeyValuePair<TKey, TValue>>() | Returns the input typed as IEnumerable<T>.(Defined by Enumerable.) |
![]() | AsParallel() | Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.) |
![]() | AsParallel<KeyValuePair<TKey, TValue>>() | Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.) |
![]() | AsQueryable() | Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.) |
![]() | AsQueryable<KeyValuePair<TKey, TValue>>() | Overloaded. Converts a generic IEnumerable<T> to a generic IQueryable<T>.(Defined by Queryable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Decimal>) | Overloaded. Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Double>) | Overloaded. Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32>) | Overloaded. Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int64>) | Overloaded. Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Decimal>>) | Overloaded. Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Double>>) | Overloaded. Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int32>>) | Overloaded. Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int64>>) | Overloaded. Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Single>>) | Overloaded. Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Average<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Single>) | Overloaded. Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Cast<TResult>() | Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.) |
![]() | Concat<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>) | Concatenates two sequences.(Defined by Enumerable.) |
![]() | Contains<KeyValuePair<TKey, TValue>>(KeyValuePair<TKey, TValue>) | Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer.(Defined by Enumerable.) |
![]() | Contains<KeyValuePair<TKey, TValue>>(KeyValuePair<TKey, TValue>, IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>.(Defined by Enumerable.) |
![]() | Count<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the number of elements in a sequence.(Defined by Enumerable.) |
![]() | Count<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition.(Defined by Enumerable.) |
![]() | DefaultIfEmpty<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.(Defined by Enumerable.) |
![]() | DefaultIfEmpty<KeyValuePair<TKey, TValue>>(KeyValuePair<TKey, TValue>) | Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.(Defined by Enumerable.) |
![]() | Distinct<KeyValuePair<TKey, TValue>>() | Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values.(Defined by Enumerable.) |
![]() | Distinct<KeyValuePair<TKey, TValue>>(IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values.(Defined by Enumerable.) |
![]() | ElementAt<KeyValuePair<TKey, TValue>>(Int32) | Returns the element at a specified index in a sequence.(Defined by Enumerable.) |
![]() | ElementAtOrDefault<KeyValuePair<TKey, TValue>>(Int32) | Returns the element at a specified index in a sequence or a default value if the index is out of range.(Defined by Enumerable.) |
![]() | Except<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.) |
![]() | Except<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>, IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Enumerable.) |
![]() | First<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the first element of a sequence.(Defined by Enumerable.) |
![]() | First<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the first element in a sequence that satisfies a specified condition.(Defined by Enumerable.) |
![]() | FirstOrDefault<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.) |
![]() | FirstOrDefault<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>) | Overloaded. Groups the elements of a sequence according to a specified key selector function.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>, IEqualityComparer<TKey>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>, IEqualityComparer<TKey>) | Overloaded. Groups the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TResult>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<TKey, IEnumerable<KeyValuePair<TKey, TValue>>, TResult>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TResult>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<TKey, IEnumerable<KeyValuePair<TKey, TValue>>, TResult>, IEqualityComparer<TKey>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TElement, TResult>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>, Func<TKey, IEnumerable<TElement>, TResult>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function.(Defined by Enumerable.) |
![]() | GroupBy<KeyValuePair<TKey, TValue>, TKey, TElement, TResult>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>, Func<TKey, IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>) | Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.(Defined by Enumerable.) |
![]() | GroupJoin<KeyValuePair<TKey, TValue>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<KeyValuePair<TKey, TValue>, TKey>, Func<TInner, TKey>, Func<KeyValuePair<TKey, TValue>, IEnumerable<TInner>, TResult>) | Overloaded. Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.(Defined by Enumerable.) |
![]() | GroupJoin<KeyValuePair<TKey, TValue>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<KeyValuePair<TKey, TValue>, TKey>, Func<TInner, TKey>, Func<KeyValuePair<TKey, TValue>, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>) | Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.(Defined by Enumerable.) |
![]() | Intersect<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.) |
![]() | Intersect<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>, IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values.(Defined by Enumerable.) |
![]() | Join<KeyValuePair<TKey, TValue>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<KeyValuePair<TKey, TValue>, TKey>, Func<TInner, TKey>, Func<KeyValuePair<TKey, TValue>, TInner, TResult>) | Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.(Defined by Enumerable.) |
![]() | Join<KeyValuePair<TKey, TValue>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<KeyValuePair<TKey, TValue>, TKey>, Func<TInner, TKey>, Func<KeyValuePair<TKey, TValue>, TInner, TResult>, IEqualityComparer<TKey>) | Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.(Defined by Enumerable.) |
![]() | Last<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the last element of a sequence.(Defined by Enumerable.) |
![]() | Last<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the last element of a sequence that satisfies a specified condition.(Defined by Enumerable.) |
![]() | LastOrDefault<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.) |
![]() | LastOrDefault<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.(Defined by Enumerable.) |
![]() | LongCount<KeyValuePair<TKey, TValue>>() | Overloaded. Returns an Int64 that represents the total number of elements in a sequence.(Defined by Enumerable.) |
![]() | LongCount<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the maximum value in a generic sequence.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Decimal>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Double>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int64>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Decimal>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Double>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int32>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int64>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Single>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Single>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value.(Defined by Enumerable.) |
![]() | Max<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, TResult>) | Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the minimum value in a generic sequence.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Decimal>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Double>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int64>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Decimal>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Double>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int32>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int64>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Single>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Single>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value.(Defined by Enumerable.) |
![]() | Min<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, TResult>) | Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.(Defined by Enumerable.) |
![]() | OfType<TResult>() | Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.) |
![]() | OrderBy<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>) | Overloaded. Sorts the elements of a sequence in ascending order according to a key.(Defined by Enumerable.) |
![]() | OrderBy<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>, IComparer<TKey>) | Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer.(Defined by Enumerable.) |
![]() | OrderByDescending<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>) | Overloaded. Sorts the elements of a sequence in descending order according to a key.(Defined by Enumerable.) |
![]() | OrderByDescending<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>, IComparer<TKey>) | Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer.(Defined by Enumerable.) |
![]() | Reverse<KeyValuePair<TKey, TValue>>() | Inverts the order of the elements in a sequence.(Defined by Enumerable.) |
![]() | Select<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, TResult>) | Overloaded. Projects each element of a sequence into a new form.(Defined by Enumerable.) |
![]() | Select<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, Int32, TResult>) | Overloaded. Projects each element of a sequence into a new form by incorporating the element's index.(Defined by Enumerable.) |
![]() | SelectMany<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, IEnumerable<TResult>>) | Overloaded. Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.(Defined by Enumerable.) |
![]() | SelectMany<KeyValuePair<TKey, TValue>, TResult>(Func<KeyValuePair<TKey, TValue>, Int32, IEnumerable<TResult>>) | Overloaded. Projects each element of a sequence to an IEnumerable<T>, and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.(Defined by Enumerable.) |
![]() | SelectMany<KeyValuePair<TKey, TValue>, TCollection, TResult>(Func<KeyValuePair<TKey, TValue>, IEnumerable<TCollection>>, Func<KeyValuePair<TKey, TValue>, TCollection, TResult>) | Overloaded. Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein.(Defined by Enumerable.) |
![]() | SelectMany<KeyValuePair<TKey, TValue>, TCollection, TResult>(Func<KeyValuePair<TKey, TValue>, Int32, IEnumerable<TCollection>>, Func<KeyValuePair<TKey, TValue>, TCollection, TResult>) | Overloaded. Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element.(Defined by Enumerable.) |
![]() | SequenceEqual<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>) | Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.(Defined by Enumerable.) |
![]() | SequenceEqual<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>, IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>.(Defined by Enumerable.) |
![]() | Single<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.(Defined by Enumerable.) |
![]() | Single<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.(Defined by Enumerable.) |
![]() | SingleOrDefault<KeyValuePair<TKey, TValue>>() | Overloaded. Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.(Defined by Enumerable.) |
![]() | SingleOrDefault<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.(Defined by Enumerable.) |
![]() | Skip<KeyValuePair<TKey, TValue>>(Int32) | Bypasses a specified number of elements in a sequence and then returns the remaining elements.(Defined by Enumerable.) |
![]() | SkipWhile<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.(Defined by Enumerable.) |
![]() | SkipWhile<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32, Boolean>) | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Decimal>) | Overloaded. Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Double>) | Overloaded. Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32>) | Overloaded. Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int64>) | Overloaded. Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Decimal>>) | Overloaded. Computes the sum of the sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Double>>) | Overloaded. Computes the sum of the sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int32>>) | Overloaded. Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Int64>>) | Overloaded. Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Nullable<Single>>) | Overloaded. Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Sum<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Single>) | Overloaded. Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.(Defined by Enumerable.) |
![]() | Take<KeyValuePair<TKey, TValue>>(Int32) | Returns a specified number of contiguous elements from the start of a sequence.(Defined by Enumerable.) |
![]() | TakeWhile<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Returns elements from a sequence as long as a specified condition is true.(Defined by Enumerable.) |
![]() | TakeWhile<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32, Boolean>) | Overloaded. Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function.(Defined by Enumerable.) |
![]() | ToArray<KeyValuePair<TKey, TValue>>() | Creates an array from a IEnumerable<T>.(Defined by Enumerable.) |
![]() | ToDictionary<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function.(Defined by Enumerable.) |
![]() | ToDictionary<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>, IEqualityComparer<TKey>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function and key comparer.(Defined by Enumerable.) |
![]() | ToDictionary<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions.(Defined by Enumerable.) |
![]() | ToDictionary<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>, IEqualityComparer<TKey>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function.(Defined by Enumerable.) |
![]() | ToList<KeyValuePair<TKey, TValue>>() | Creates a List<T> from an IEnumerable<T>.(Defined by Enumerable.) |
![]() | ToLookup<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function.(Defined by Enumerable.) |
![]() | ToLookup<KeyValuePair<TKey, TValue>, TKey>(Func<KeyValuePair<TKey, TValue>, TKey>, IEqualityComparer<TKey>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function and key comparer.(Defined by Enumerable.) |
![]() | ToLookup<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions.(Defined by Enumerable.) |
![]() | ToLookup<KeyValuePair<TKey, TValue>, TKey, TElement>(Func<KeyValuePair<TKey, TValue>, TKey>, Func<KeyValuePair<TKey, TValue>, TElement>, IEqualityComparer<TKey>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function.(Defined by Enumerable.) |
![]() | Union<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set union of two sequences by using the default equality comparer.(Defined by Enumerable.) |
![]() | Union<KeyValuePair<TKey, TValue>>(IEnumerable<KeyValuePair<TKey, TValue>>, IEqualityComparer<KeyValuePair<TKey, TValue>>) | Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer<T>.(Defined by Enumerable.) |
![]() | Where<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Boolean>) | Overloaded. Filters a sequence of values based on a predicate.(Defined by Enumerable.) |
![]() | Where<KeyValuePair<TKey, TValue>>(Func<KeyValuePair<TKey, TValue>, Int32, Boolean>) | Overloaded. Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.(Defined by Enumerable.) |
![]() | Zip<KeyValuePair<TKey, TValue>, TSecond, TResult>(IEnumerable<TSecond>, Func<KeyValuePair<TKey, TValue>, TSecond, TResult>) | Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.(Defined by Enumerable.) |
Each element is a key/value pair that is stored in a KeyValuePair<TKey, TValue> object.
Each pair must have a unique key. Implementations can vary in whether they allow you to specify a key that is null. The value can be null and does not have to be unique. The IDictionary<TKey, TValue> interface allows the contained keys and values to be enumerated, but it does not imply any particular sort order.
The foreach statement of the C# language (For Each in Visual Basic, for each in C++) requires the type of each element in the collection. Because each element of the IReadOnlyDictionary<TKey, TValue> interface is a key/value pair, the element type is not the type of the key or the type of the value. Instead, the element type is KeyValuePair<TKey, TValue>, as the following example illustrates.
foreach (KeyValuePair<int, string> kvp in myDictionary) { Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value); }
The foreach statement is a wrapper around the enumerator; it allows only reading from the collection, not writing to the collection.
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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