MultidimensionalArrayItemReference<TItem> Class
Represents an element in a multidimensional array that can be used as an l-value in an expression.
Assembly: System.Activities (in System.Activities.dll)
System.Activities::Activity
System.Activities::ActivityWithResult
System.Activities::Activity<TResult>
System.Activities::CodeActivity<TResult>
System.Activities.Expressions::MultidimensionalArrayItemReference<TItem>
| Name | Description | |
|---|---|---|
![]() | MultidimensionalArrayItemReference<TItem>() | Initializes a new instance of the MultidimensionalArrayItemReference<TItem> class. |
| Name | Description | |
|---|---|---|
![]() | Array | Gets or sets the array referenced by the MultidimensionalArrayItemReference<TItem>. |
![]() | CacheId | Gets the identifier of the cache that is unique within the scope of the workflow definition.(Inherited from Activity.) |
![]() | DisplayName | Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking.(Inherited from Activity.) |
![]() | Id | Gets an identifier that is unique in the scope of the workflow definition.(Inherited from Activity.) |
![]() | ImplementationVersion | Gets or sets the implementation version of the activity.(Inherited from CodeActivity<TResult>.) |
![]() | Indices | Gets a collection of arguments that represent the indices of the element in the array. |
![]() | Result | Gets or sets the result argument for the Activity<TResult>.(Inherited from Activity<TResult>.) |
![]() | ResultType | When implemented in a derived class, gets the type of an activity OutArgument.(Inherited from ActivityWithResult.) |
| Name | Description | |
|---|---|---|
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | ShouldSerializeDisplayName() | Indicates whether the DisplayName property should be serialized.(Inherited from Activity.) |
![]() | ToString() | Returns a String that contains the Id and DisplayName of the Activity.(Inherited from Activity.) |
The following code example uses MultidimensionalArrayItemReference<TItem> in an Assign activity to assign an integer value to the array element at row 1 and column 2 and prints the value of the array element to the console. The Assign activity is equivalent to the following statement when using arrays: array[1, 2] = 1;.
Note |
|---|
Instead of instantiating the MultidimensionalArrayItemReference<TItem> l-value expression activity directly, it is strongly recommended that you call ConvertReference<TResult>, which provides a higher level of abstraction and enables you to implement your workflow more intuitively. |
public static void MultidimensionalArrayItemReferenceSample()
{
// Create a variable to store a multidimensional array.
var arrayvar = new Variable<int[,]>("arrayvar", new int[4, 5]);
Activity myActivity = new Sequence
{
Variables = { arrayvar },
Activities =
{
// Create an Assign activity to assign a value to the array item at index [1,2].
new Assign<int>
{
To = new MultidimensionalArrayItemReference<int>
{
Array = arrayvar,
Indices = {1, 2}
},
// Assign an integer value to the array item at row 1 column 2.
Value = 1,
},
// Print the array item value to the console.
new WriteLine()
{
Text = ExpressionServices.Convert<string>(ctx => arrayvar.Get(ctx)[1, 2].ToString()),
}
}
};
// Invoke the Sequence activity.
WorkflowInvoker.Invoke(myActivity);
}
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



