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How to capture Mouse and Key events when the text box cell is in an active edit state in WinForms GridControl?
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TextBox cell events
The embedded WinForms Grid gets the mouse actions when the text box is active. You can subscribe to the embedded textbox's events that are inside a cell by accessing it by using the cell's renderer. Refer to following code examples.
C#
//In Form_Load()
// Creates a text box cell renderer object.
GridTextBoxCellRenderer textBoxCellRenderer = (GridTextBoxCellRenderer)this.gridControl1.CellRenderers["TextBox"];
//Invokes the MouseDown and KeyUp events of the text box
textBoxCellRenderer.TextBox.MouseDown += new MouseEventHandler(textbox_MouseDown);
textBoxCellRenderer.TextBox.KeyUp += new System.Windows.Forms.KeyEventHandler(this.textBox_KeyUp);
private void textbox_MouseDown(object sender, MouseEventArgs e)
{
//Writes the MouseDown action
Trace.WriteLine("textbox_MouseDown");
}
private void textBox_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
//Writes the KeyUp event
Trace.WriteLine("textBox_KeyUp");
}
VB
'In Form_Load()
'Creates a text box cell renderer object.
Private textBoxCellRenderer As GridTextBoxCellRenderer = CType(Me.gridControl1.CellRenderers("TextBox"), GridTextBoxCellRenderer)
'Invokes the MouseDown and KeyUp events of the text box
Private textBoxCellRenderer.TextBox.MouseDown += New MouseEventHandler(AddressOf textbox_MouseDown)
Private textBoxCellRenderer.TextBox.KeyUp += New System.Windows.Forms.KeyEventHandler(AddressOf Me.textBox_KeyUp)
Private Sub textbox_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)
'Writes the MouseDown action
Trace.WriteLine("textbox_MouseDown")
End Sub
Private Sub textBox_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs)
'Writes the KeyUp event
Trace.WriteLine("textBox_KeyUp")
End Sub
Figure 1: TextBox cell event trace in grid control.
Figure 2: The traced events list in the text box cell.
Samples:
