Represents a collection of PackageRelationship elements that are owned by a given PackagePart or the Package.

**Namespace:**System.IO.Packaging

**Assembly:**WindowsBase (in WindowsBase.dll)

```
public class PackageRelationshipCollection : IEnumerable<PackageRelationship>,
IEnumerable
```

```
public ref class PackageRelationshipCollection : IEnumerable<PackageRelationship^>,
IEnumerable
```

```
type PackageRelationshipCollection =
class
interface IEnumerable<PackageRelationship>
interface IEnumerable
end
```

```
Public Class PackageRelationshipCollection
Implements IEnumerable(Of PackageRelationship), IEnumerable
```

Name | Description | |
---|---|---|

Equals | Determines whether the specified object is equal to the current object.(Inherited from Object.) | |

Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) | |

GetEnumerator | Returns an enumerator for iterating through the relationships in the collection. | |

GetHashCode | Serves as the default hash function. (Inherited from Object.) | |

GetType | ||

MemberwiseClone | ||

ToString | Returns a string that represents the current object.(Inherited from Object.) |

Name | Description | |
---|---|---|

IEnumerableGetEnumerator | This type or member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. |

Name | Description | |
---|---|---|

Aggregate | Overloaded. Applies an accumulator function over a sequence.(Defined by Enumerable.) | |

Aggregate | Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.(Defined by Enumerable.) | |

Aggregate | 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 | Determines whether all elements of a sequence satisfy a condition.(Defined by Enumerable.) | |

Any | Overloaded. Determines whether a sequence contains any elements.(Defined by Enumerable.) | |

Any | Overloaded. Determines whether any element of a sequence satisfies a condition.(Defined by Enumerable.) | |

AsEnumerable | Returns the input typed as IEnumerable.(Defined by Enumerable.) | |

AsParallel | Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.) | |

AsParallel | Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.) | |

AsQueryable | Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.) | |

AsQueryable | Overloaded. Converts a generic IEnumerable to a generic IQueryable.(Defined by Queryable.) | |

Average | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.) | |

Concat | Concatenates two sequences.(Defined by Enumerable.) | |

Contains | Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer.(Defined by Enumerable.) | |

Contains | Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer.(Defined by Enumerable.) | |

Count | Overloaded. Returns the number of elements in a sequence.(Defined by Enumerable.) | |

Count | Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition.(Defined by Enumerable.) | |

DefaultIfEmpty | 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 | 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 | Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values.(Defined by Enumerable.) | |

Distinct | Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer to compare values.(Defined by Enumerable.) | |

ElementAt | Returns the element at a specified index in a sequence.(Defined by Enumerable.) | |

ElementAtOrDefault | 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 | Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.) | |

Except | Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer to compare values.(Defined by Enumerable.) | |

First | Overloaded. Returns the first element of a sequence.(Defined by Enumerable.) | |

First | Overloaded. Returns the first element in a sequence that satisfies a specified condition.(Defined by Enumerable.) | |

FirstOrDefault | Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.) | |

FirstOrDefault | 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 | Overloaded. Groups the elements of a sequence according to a specified key selector function.(Defined by Enumerable.) | |

GroupBy | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer is used to compare keys.(Defined by Enumerable.) | |

Intersect | Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values.(Defined by Enumerable.) | |

Intersect | Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer to compare values.(Defined by Enumerable.) | |

Join | Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.(Defined by Enumerable.) | |

Join | Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer is used to compare keys.(Defined by Enumerable.) | |

Last | Overloaded. Returns the last element of a sequence.(Defined by Enumerable.) | |

Last | Overloaded. Returns the last element of a sequence that satisfies a specified condition.(Defined by Enumerable.) | |

LastOrDefault | Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements.(Defined by Enumerable.) | |

LastOrDefault | 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 | Overloaded. Returns an Int64 that represents the total number of elements in a sequence.(Defined by Enumerable.) | |

LongCount | Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition.(Defined by Enumerable.) | |

Max | Overloaded. Returns the maximum value in a generic sequence.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value.(Defined by Enumerable.) | |

Max | Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.(Defined by Enumerable.) | |

Min | Overloaded. Returns the minimum value in a generic sequence.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value.(Defined by Enumerable.) | |

Min | Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.(Defined by Enumerable.) | |

OfType | Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.) | |

OrderBy | Overloaded. Sorts the elements of a sequence in ascending order according to a key.(Defined by Enumerable.) | |

OrderBy | Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer.(Defined by Enumerable.) | |

OrderByDescending | Overloaded. Sorts the elements of a sequence in descending order according to a key.(Defined by Enumerable.) | |

OrderByDescending | Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer.(Defined by Enumerable.) | |

Reverse | Inverts the order of the elements in a sequence.(Defined by Enumerable.) | |

Select | Overloaded. Projects each element of a sequence into a new form.(Defined by Enumerable.) | |

Select | Overloaded. Projects each element of a sequence into a new form by incorporating the element's index.(Defined by Enumerable.) | |

SelectMany | Overloaded. Projects each element of a sequence to an IEnumerable and flattens the resulting sequences into one sequence.(Defined by Enumerable.) | |

SelectMany | Overloaded. Projects each element of a sequence to an IEnumerable, 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 | Overloaded. Projects each element of a sequence to an IEnumerable, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein.(Defined by Enumerable.) | |

SelectMany | Overloaded. Projects each element of a sequence to an IEnumerable, 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 | Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.(Defined by Enumerable.) | |

SequenceEqual | Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer.(Defined by Enumerable.) | |

Single | 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 | 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 | 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 | 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 | Bypasses a specified number of elements in a sequence and then returns the remaining elements.(Defined by Enumerable.) | |

SkipWhile | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.(Defined by Enumerable.) | |

SkipWhile | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | Returns a specified number of contiguous elements from the start of a sequence.(Defined by Enumerable.) | |

TakeWhile | Overloaded. Returns elements from a sequence as long as a specified condition is true.(Defined by Enumerable.) | |

TakeWhile | 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 | Creates an array from a IEnumerable.(Defined by Enumerable.) | |

ToDictionary | Overloaded. Creates a Dictionary from an IEnumerable according to a specified key selector function.(Defined by Enumerable.) | |

ToDictionary | Overloaded. Creates a Dictionary from an IEnumerable according to a specified key selector function and key comparer.(Defined by Enumerable.) | |

ToDictionary | Overloaded. Creates a Dictionary from an IEnumerable according to specified key selector and element selector functions.(Defined by Enumerable.) | |

ToDictionary | Overloaded. Creates a Dictionary from an IEnumerable according to a specified key selector function, a comparer, and an element selector function.(Defined by Enumerable.) | |

ToList | Creates a List from an IEnumerable.(Defined by Enumerable.) | |

ToLookup | Overloaded. Creates a Lookup from an IEnumerable according to a specified key selector function.(Defined by Enumerable.) | |

ToLookup | Overloaded. Creates a Lookup from an IEnumerable according to a specified key selector function and key comparer.(Defined by Enumerable.) | |

ToLookup | Overloaded. Creates a Lookup from an IEnumerable according to specified key selector and element selector functions.(Defined by Enumerable.) | |

ToLookup | Overloaded. Creates a Lookup from an IEnumerable according to a specified key selector function, a comparer and an element selector function.(Defined by Enumerable.) | |

Union | Overloaded. Produces the set union of two sequences by using the default equality comparer.(Defined by Enumerable.) | |

Union | Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer.(Defined by Enumerable.) | |

Where | Overloaded. Filters a sequence of values based on a predicate.(Defined by Enumerable.) | |

Where | 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 | Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.(Defined by Enumerable.) |

The PackageRelationshipCollection class has no public constructor. This class is created and returned by the following methods.

**Package**. GetRelationships**Package**. GetRelationshipsByType**PackagePart**. GetRelationships**PackagePart**. GetRelationshipsByType

**.NET Framework**

Available since 3.0

Any public static (
**Shared**
in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.