Drag&Drop: AllowedEffects

[AndreasG]

Hi everybody,

I need to Drag&Drop inside a grid (not inbetween different controls).

I've implemented the DragEnter, DragOver and DragDrop event handlers.

In general, that works. But I now should define at the start of the dragging, which operation (move, copy or both or none) should be allowed.

Setting e.Effect in DragEnter does not set the allowed effect, as I noticed. Where and how do I have to set the allowed effects?

Best regards
Andreas

[Administrator]

Hi Andreas,

You can set the DragDropEffects in DragOver event like below code snippet

private void gridControl1_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
System.Diagnostics.Debug.WriteLine(string.Format("gridControl1_DragOver: AllowedEffect = {0}, Effect = {1}", e.AllowedEffect, e.Effect));
}

Please refer the attached sample and let me know this helps.
http://websamples.syncfusion.com/Samples/Grid.Windows/F72131/main.htm



Best regards,
Johnson