# Commands

**RadDiagram** provides a powerful set of **RoutedUICommands** that help you work with your **RadDiagram** and its items easily and build better MVVM applications.

## RadDiagram Commands

The static **DiagramCommands** class defines the following **RoutedUICommands**:

* **Align**- Aligns the selected shapes.

* **Snap**- Snaps the selected shapes.

* **Layout**- Organizes the diagram automatically.

* **Copy**- Copies selected diagram items.

* **Paste**- Pastes selected diagram items.

* **Delete**- Deletes selected diagram items.

* **Cut**- Cut selected diagram items.

* **Duplicate**- Duplicates selected item/s.

* **Undo**- Undoes the last action.

* **Redo**- Redoes the last action.

* **BringToFront**- Brings to front selected diagram items.

* **BringForward**- Brings forward selected diagram items.

* **SendToBack**- Sends to back selected diagram items.

* **SendBackward**- Sends backward selected diagram items.

* **Clear**- Clears the diagram.

* **BeginEdit**- Begins editing diagram item.

* **CommitEdit**- Commits the edited changes.

* **CancelEdit**- Cancels the edited changes.

* **SelectAll**- Selects all shapes in the diagram.

* **Nudge**- Moves selected item/s in a specific direction. You can pass more specifics about the nudge operation through the **CommandParameter**. This parameter can be a single string representing the direction of the nudge:

  * **Left**

  * **Right**

  * **Up**

  * **Down** - it can also be a string in the form of **"direction; amount"**, the **'direction'** being a value from the above list of direction strings. The **'amount'**  options are:

    * **Small** - if the RadDiagram.**IsSnapToGridEnabled** property is set to *true* then this amount would mean that the nudge should happen once to the appointed direction using the SnapX/Y value as a step. The snap settings can be applied in the **RadDiagram** definition. If the RadDiagram.**IsSnapToGridEnabled** property is *false*, a *"Small"* amount indicates a step of 5 pixels;

    * **Large** - if the RadDiagram.**IsSnapToGridEnabled** property is set to *true* then this amount would mean that the nudge should happen once to the appointed direction using 5\*SnapX/Y value as a step. The snap settings can be applied in the **RadDiagram** definition. If the RadDiagram.**IsSnapToGridEnabled** property is *false*, a *"Large"* amount indicates a step of 10 pixels;

    * **any number** - if you provide a number in the **CommandParameter**, this number would indicate the number of pixels to be used as a step for the Nudge command.

* **Group**- Groups the selected items.

* **Ungroup**- Ungroups the selected groups.

## Using Diagram Commands

Below is shown a sample code snippet how you can use some of the Diagram Commands in an application by using the DiagramElement.**TryExecuteCommand** method:

```C#

private void radButton1_Click(object sender, EventArgs e)
{
    this.radDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Copy);
}

private void radButton2_Click(object sender, EventArgs e)
{
    this.radDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Paste);
}

private void radButton3_Click(object sender, EventArgs e)
{
    this.radDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Nudge, "Left");
}

```

```VB.NET
Private Sub RadButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click
    Me.RadDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Copy)
End Sub

Private Sub RadButton2_Click(sender As Object, e As EventArgs) Handles RadButton2.Click
    Me.RadDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Paste)
End Sub

Private Sub RadButton3_Click(sender As Object, e As EventArgs) Handles RadButton3.Click
    Me.RadDiagram1.DiagramElement.TryExecuteCommand(Telerik.WinControls.UI.Diagrams.DiagramCommands.Nudge, "Left")
End Sub
```

![WinForms RadDiagram Commands](https://www.telerik.com/products/winforms/documentation/assets/03b7d897c66ec29b5dca787738085ed9/diagram-features-commands001.gif)