DataRepeaterAddRemoveItemsCancelEventArgs Class

Provides data for the DeletingItems and UserDeletingItems events.

Inheritance Hierarchy

System.Object
  System.EventArgs
    System.ComponentModel.CancelEventArgs
      Microsoft.VisualBasic.PowerPacks.DataRepeaterAddRemoveItemsCancelEventArgs

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

Syntax

'宣言
Public Class DataRepeaterAddRemoveItemsCancelEventArgs _
    Inherits CancelEventArgs

public class DataRepeaterAddRemoveItemsCancelEventArgs : CancelEventArgs

public ref class DataRepeaterAddRemoveItemsCancelEventArgs : public CancelEventArgs

type DataRepeaterAddRemoveItemsCancelEventArgs =  
    class
        inherit CancelEventArgs
    end

public class DataRepeaterAddRemoveItemsCancelEventArgs extends CancelEventArgs

The DataRepeaterAddRemoveItemsCancelEventArgs type exposes the following members.

Constructors

	Name	Description
	DataRepeaterAddRemoveItemsCancelEventArgs	Initializes a new instance of the DataRepeaterAddRemoveItemsCancelEventArgs class.

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Properties

	Name	Description
	Cancel	Gets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs.)
	ItemCount	Gets the number of items being deleted.
	ItemIndex	Gets the index of the item that is being deleted.

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Methods

	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.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

The DeletingItems and UserDeletingItems events occur when a request is made to delete a DataRepeaterItem from a DataRepeater control.

You can override the deletion by setting the cancel parameter of the DataRepeaterAddRemoveItemsCancelEventArgs to True.

Examples

The following example demonstrates how to cancel a deletion in the DeletingItems event handler.

Private Sub DataRepeater1_DeletingItems(
    ByVal sender As Object, 
    ByVal e As Microsoft.VisualBasic.PowerPacks.DataRepeaterAddRemoveItemsCancelEventArgs
  ) Handles DataRepeater1.DeletingItems

    ' Check whether the user is a supervisor.
    If My.User.IsInRole("Supervisor") = False Then
        ' Cancel the deletion and display a message.
        e.Cancel = True
        MsgBox("You are not authorized to delete.")
    End If
End Sub

private void DataRepeater1_DeletingItems(object sender, 
    Microsoft.VisualBasic.PowerPacks.DataRepeaterAddRemoveItemsCancelEventArgs e)
{
    // Check whether the user is a supervisor.

    ClientRolePrincipal rolePrincipal =
        System.Threading.Thread.CurrentPrincipal
        as ClientRolePrincipal;

    if (rolePrincipal.IsInRole("supervisor") == false)
    {
        e.Cancel = true;
        MessageBox.Show("You are not authorized to delete.");
    }
}   

Thread Safety

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

See Also

Reference

Microsoft.VisualBasic.PowerPacks Namespace

DeletingItems

UserDeletingItems

Other Resources

Introduction to the DataRepeater Control (Visual Studio)

How to: Disable Adding and Deleting DataRepeater Items (Visual Studio)