problem selecting cell after datagridviewcell Drop Down

Hello..

I want to drag n drop Single cell.. such that i can copy the value form one cell to another.. i used following code .. everything works fine but problem is that after dropping cell the new cell where i am dropping value doesn't highlight. and highlight remain on the first cell where i start dragging...

Here is the code.. i try to set current cell .. but still didn't work.

private void dataGridView1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
DataGridView.HitTestInfo info = dataGridView1.HitTest(e.X, e.Y);
if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
{
string text = Convert.ToString(dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value);
if (text != null)
{
dataGridView1.DoDragDrop(text, DragDropEffects.Copy);
}
}
}
}
private void dataGridView1_DragEnter(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
}
private void dataGridView1_DragDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(System.String )))
{
DataGridView dgv = (DataGridView)sender;
Point p = dgv.PointToClient(new Point(e.X, e.Y));
DataGridView.HitTestInfo info= dgv.HitTest(p.X, p.Y);
if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
{
dataGridView1[info.ColumnIndex,info.RowIndex].Value = e.Data.GetData(typeof(System.String));
dgv.CurrentCell = dataGridView1[info.ColumnIndex, info.RowIndex];
dgv.CurrentCell.Selected = true;
}
}
}

Solved..

Problem is DoDragDrop event is called in Mouse_Down. instead i called it from Mouse_Move and Problem get solved.

As Calling DoDragDrop from Mouse Down will return to Mouse Down event after drag n drop Complete. and set focus to the cell where Mouse Down Pressed..

here is the code

private Rectangle dragBoxSrc;
string text = null;
private void dataGridView1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
DataGridView.HitTestInfo info = dataGridView1.HitTest(e.X, e.Y);
if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
{
text = Convert.ToString(dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value);
if (text != null)
{
dragBoxSrc = new Rectangle(new Point(e.X, e.Y), SystemInformation.DragSize);
}
else
{
dragBoxSrc = Rectangle.Empty;
}
}
}
}
private void dataGridView1_MouseMove(object sender, MouseEventArgs e)
{
if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
{
if (dragBoxSrc != Rectangle.Empty && !dragBoxSrc.Contains(e.X, e.Y))
{
DragDropEffects dropEffect = dataGridView1.DoDragDrop(text, DragDropEffects.Copy);
}
}
}
private void dataGridView1_DragEnter(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
}
private void dataGridView1_DragDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(System.String )))
{
DataGridView dgv = (DataGridView)sender;
Point p = dgv.PointToClient(new Point(e.X, e.Y));
DataGridView.HitTestInfo info= dgv.HitTest(p.X, p.Y);
if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
{
dataGridView1[info.ColumnIndex,info.RowIndex].Value = e.Data.GetData(typeof(System.String));
dgv.CurrentCell = dataGridView1[info.ColumnIndex, info.RowIndex];
}
}
}

2 Replies

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Hirendra Sisodiya16y ago
good..........
0
try abc16y ago
Solved..

Problem is DoDragDrop event is called in Mouse_Down. instead i called it from Mouse_Move and Problem get solved.

As Calling DoDragDrop from Mouse Down will return to Mouse Down event after drag n drop Complete. and set focus to the cell where Mouse Down Pressed..

here is the code
private Rectangle dragBoxSrc;
string text = null;
private void dataGridView1_MouseDown(object sender, MouseEventArgs e)
{
     if (e.Button == MouseButtons.Left)
     {
         DataGridView.HitTestInfo info = dataGridView1.HitTest(e.X, e.Y);
         if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
         {
             text = Convert.ToString(dataGridView1.Rows[info.RowIndex].Cells[info.ColumnIndex].Value);
             if (text != null)
             {
                       dragBoxSrc = new Rectangle(new Point(e.X, e.Y), SystemInformation.DragSize);
             }
             else
             {
                       dragBoxSrc = Rectangle.Empty;
             }
         }
     }
}
private void dataGridView1_MouseMove(object sender, MouseEventArgs e)
{
     if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
     {
         if (dragBoxSrc != Rectangle.Empty && !dragBoxSrc.Contains(e.X, e.Y))
         {
                   DragDropEffects dropEffect = dataGridView1.DoDragDrop(text, DragDropEffects.Copy);
         }
     }
}
private void dataGridView1_DragEnter(object sender, DragEventArgs e)
{
      e.Effect = DragDropEffects.Copy;
}
private void dataGridView1_DragDrop(object sender, DragEventArgs e)
{
     if (e.Data.GetDataPresent(typeof(System.String )))
     {
         DataGridView dgv = (DataGridView)sender;
         Point p = dgv.PointToClient(new Point(e.X, e.Y));
         DataGridView.HitTestInfo info= dgv.HitTest(p.X, p.Y);
         if (info.RowIndex >= 0 && info.ColumnIndex >= 0)
         {
                   dataGridView1[info.ColumnIndex,info.RowIndex].Value = e.Data.GetData(typeof(System.String));
                   dgv.CurrentCell = dataGridView1[info.ColumnIndex, info.RowIndex];
         }
     }
}
0