RemoveFromCollection<T> Activity Designer
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
The RemoveFromCollection<T> activity designer is used to create and configure a RemoveFromCollection<T> activity.
The RemoveFromCollection<T>Activity
The RemoveFromCollection<T> activity removes a specified item from a particular collection.
Using the RemoveFromCollection<T> Activity Designer
Access the RemoveFromCollection<T> activity designer in the Collection category of the Toolbox. The RemoveFromCollection<T> activity designer can be dragged from the Toolbox and dropped on to the Workflow Designer surface wherever activities are usually placed, such as inside a Sequence. This creates a RemoveFromCollection<T> activity with a default DisplayName of RemoveFromCollection<Int32>. The DisplayName value can be edited in the header of the RemoveFromCollection<T> activity designer or in the DisplayName box of the property grid. The other properties must be edited on the property grid.
The RemoveFromCollection<T> Properties
The following table shows the RemoveFromCollection<T> properties and describes how they are used in the designer:
| Property Name | Required | Usage |
|---|---|---|
| DisplayName | False | The optional friendly name of the RemoveFromCollection<T> activity. The default is the RemoveFromCollection<Int32>. Although the DisplayName is not strictly required, it is a best practice to use one. |
| Item | True | The item to remove from the Collection<T>. This item is of type T, which is of type TypeArgument. To specify the item, type in a Visual Basic expression in the property grid. |
| Collection | True | The collection from which the item should be removed. This collection is of type ICollection<TypeArgument>. To specify the collection, type in a Visual Basic expression in the property grid. |
| TypeArgument | True | The type T of the items contained in the ICollection<T>. By default, this TypeArgument type is set to Int32. To change the type, change the value of the TypeArgument in the combo box in the property grid. |
| Result | False | A value that indicates whether the specified item was removed from the collection. To specify a variable to bind to the result, type in a variable in the property grid |