Capture Mouse and Key Events in Windows Forms GridControl

15 Jun 20212 minutes to read

How to Capture Mouse and Key Events When the Text Box Cell is in an Active State

Introduction

The embedded text box control gets the mouse actions while the text box is active. You can subscribe to the embedded text box’s events inside a cell by accessing it through the cell’s renderer.

C#
VB.NET
private void Form1_Load(object sender, System.EventArgs e)
{
    //Creates TextBoxCellRenderer object.
    GridTextBoxCellRenderer textBoxCellRenderer = (GridTextBoxCellRenderer) this.grid.CellRenderers["TextBox"];
    
    //Handle Renderer.TextBox.MouseDown to capture mouse events. 
    textBoxCellRenderer.TextBox.MouseDown += new MouseEventHandler(textbox_MouseDown);
    
    //Handle Renderer.TextBox.KeyUp to capture key events.
    textBoxCellRenderer.TextBox.KeyUp += new KeyEventHandler(textBox_KeyUp);

}

private void textbox_MouseDown(object sender, MouseEventArgs e)
{
    Console.WriteLine("textbox_MouseDown");
}

private void textBox_KeyUp(object sender, KeyEventArgs e)
{
    Console.WriteLine("textBox_KeyUp");
}
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs)
    'Creates TextBoxCellRenderer object.
    Dim textBoxCellRenderer As GridTextBoxCellRenderer = CType(Me.grid.CellRenderers("TextBox"), GridTextBoxCellRenderer)

    'Handle Renderer.TextBox.MouseDown to capture mouse events.
    AddHandler textBoxCellRenderer.TextBox.MouseDown, AddressOf textbox_MouseDown
    AddHandler textBoxCellRenderer.TextBox.KeyUp, AddressOf textBox_KeyUp

'Form1_Load.
End Sub 

Private Sub textbox_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)
    Console.WriteLine("textbox_MouseDown")
End Sub 
	
Private Sub textBox_KeyUp(ByVal sender As Object, ByVal e As KeyEventArgs)
    Console.WriteLine("textBox_KeyUp")    
End Sub