dotnet-framework-api
- C1.Win.C1Editor.4.8 Assembly

C1.Win.C1Editor.C1Editor.CanRedo

CanRedo Method

CanRedo()

Returns a value that indicates whether the most recent undo action can be redone.

Declaration

public bool CanRedo()

Public Function CanRedo() As Boolean

Returns

Type	Description
bool	True if the most recent undo action can be redone; otherwise, False.

Examples

This example shows how to create a custom context menu that can be linked to a C1Editor control and has Undo and Redo buttons.

class MyContextMenuStrip : ContextMenuStrip
{
private C1Editor _owner;
private ToolStripMenuItem _btnUndo, _btnRedo;
            public MyContextMenuStrip(C1Editor editor)
            {
                // save reference to parent control
                _owner = editor;

                // create menu items
                _btnUndo = (ToolStripMenuItem)Items.Add("Undo");
                _btnUndo.ShortcutKeys = Keys.Control | Keys.Z;
                _btnRedo = (ToolStripMenuItem)Items.Add("Redo");
                _btnRedo.ShortcutKeys = Keys.Control | Keys.Y;
            }

            protected override void OnItemClicked(ToolStripItemClickedEventArgs e)
            {
                Close();

                if (e.ClickedItem == _btnUndo)
                    _owner.Undo();
                else if (e.ClickedItem == _btnRedo)
                    _owner.Redo();
                base.OnItemClicked(e);
            }

            protected override void OnOpening(System.ComponentModel.CancelEventArgs e)
            {
                _btnUndo.Enabled = _owner.CanUndo;
                _btnRedo.Enabled = _owner.CanCut;
                base.OnOpening(e);
            }</code></pre>