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RichTextBox.CanRedo Property

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Source:
RichTextBox.cs
Source:
RichTextBox.cs
Source:
RichTextBox.cs

Gets a value indicating whether there are actions that have occurred within the RichTextBox that can be reapplied.

public:
 property bool CanRedo { bool get(); };
[System.ComponentModel.Browsable(false)]
public bool CanRedo { get; }
[<System.ComponentModel.Browsable(false)>]
member this.CanRedo : bool
Public ReadOnly Property CanRedo As Boolean

Property Value

Boolean

true if there are operations that have been undone that can be reapplied to the content of the control; otherwise, false.

Attributes
BrowsableAttribute

Examples

The following code example demonstrates how to use the CanRedo and RedoActionName properties, and the Redo method, to restrict a redo operation to any action except the deletion of text. This example requires that you have a form that contains a RichTextBox control and that an operation within the RichTextBox has been performed and undone before the code in this example is called.

private:
   void RedoAllButDeletes()
   {
      // Determines if a Redo operation can be performed.
      if ( richTextBox1->CanRedo )
      {
         // Determines if the redo operation deletes text.
         if (  !richTextBox1->RedoActionName->Equals( "Delete" ) )
         // Perform the redo.
         richTextBox1->Redo();
      }
   }

private void RedoAllButDeletes()
{
    // Determines if a Redo operation can be performed.
    if (richTextBox1.CanRedo)
    {
        // Determines if the redo operation deletes text.
        if (richTextBox1.RedoActionName != "Delete")
            // Perform the redo.
            richTextBox1.Redo();
    }
}

Private Sub RedoAllButDeletes()

    ' Determines if a Redo operation can be performed.
    If richTextBox1.CanRedo = True Then
        ' Determines if the redo operation deletes text.
        If richTextBox1.RedoActionName <> "Delete" Then
            ' Perform the redo.
            richTextBox1.Redo()
        End If
    End If
End Sub

Remarks

You can use this property to determine whether the last operation undone in the RichTextBox can be reapplied using the Redo method.

Applies to

See also