Hello,
I have a custom Editor derived from BaseInputEditor based on a RadButtonTextBoxElement.
In the "EndEdit()" function I change another property of the selected object, how can I see if the user canceled the edit by pressing ESC, so I can prevent the change of the other property?
2 Answers, 1 is accepted
RadPropertyGrid handles pressing the Escape key in its ProcessDialogKey method:
protected override bool ProcessDialogKey(Keys keyData)
{
if (this.IsEditing && ((keyData == Keys.Return) || (keyData == Keys.Escape)))
{
if (keyData == Keys.Return)
{
this.EndEdit();
}
else if (keyData == Keys.Escape)
{
this.CancelEdit();
}
return true;
}
return base.ProcessDialogKey(keyData);
}There is no dedicated event for handling when the edit operation is rejected by pressing the Escape key. You can create a derivative of RadPropertyGrid and override its ProcessDialogKey method to detect the specific key.
An alternative approach is to handle the keyboard input in the activated editor. Here is demonstrated a sample code snippet:
public RadForm1()
{
InitializeComponent();
this.radPropertyGrid1.SelectedObject = this;
this.radPropertyGrid1.EditorInitialized+=radPropertyGrid1_EditorInitialized;
}
private void radPropertyGrid1_EditorInitialized(object sender, PropertyGridItemEditorInitializedEventArgs e)
{
PropertyGridTextBoxEditor textBoxEditor = e.Editor as PropertyGridTextBoxEditor;
if (textBoxEditor!=null)
{
BaseTextBoxEditorElement el = textBoxEditor.EditorElement as BaseTextBoxEditorElement;
el.TextBoxItem.TextBoxControl.PreviewKeyDown+=TextBoxControl_PreviewKeyDown;
}
}
private void TextBoxControl_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
if (e.KeyData== Keys.Escape)
{
Console.WriteLine("Escape");
}
}Feel free to use this approach which suits your custom requirements best.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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