Set focus to Data Grid View Text Box Column Cell

Question

I have a gridview of type datagridview text box column, in that following columns are there:

SrNo    | Description    | HSNCode    | Qty   | Rate   | Amount

I am generating amount in my program automatically, but I want to check if the user has entered to amount field without entering data in "Rate" then I want to set focus back to the "Rate" field in my program:

I have tried following code:

private void grdData_CellLeave(object sender, DataGridViewCellEventArgs e)
{
   if (e.ColumnIndex == 4)
   {
       if(grdData.Rows[e.RowIndex].Cells[4].Value== null)
       {
           grdData.CurrentCell = grdData.Rows[e.RowIndex].Cells[4];
       }
    }
}

But the code is not working.
What should I do to switch focus to the field that is previous to the "Amount"?
Please help.

Answer 1

Try:

private void grdData_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
{
   if (e.ColumnIndex == 5)
   {
       if(grdData.Rows[e.RowIndex].Cells[3].Value.Equals(""))  
       {
           grdData.ClearSelection(); 
           grdData.Rows[e.RowIndex].Cells[3].Selected = true;
       }
   }
}

Update - tested and working fine using cellclick event

private void grdData_CellClick(object sender, DataGridViewCellEventArgs e)
{
   if (e.ColumnIndex == 5)
   {
       if(grdData.Rows[e.RowIndex].Cells[3].Value.Equals(""))  
       {
           grdData.ClearSelection(); 
           grdData.Rows[e.RowIndex].Cells[3].Selected = true;
       }
   }
}

Answer 2

 private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
        {
            int row = e.RowIndex;
            int col = e.ColumnIndex;
            if (row < 0 || col != 3)
                return;
            if (e.FormattedValue.ToString().Equals(String.Empty))
            {
            }
            else
            {
                double quantity = 0;
                try
                {
                    quantity = Convert.ToDouble(e.FormattedValue.ToString());
                    if (quantity == 0)
                    {
                        MessageBox.Show("The quantity can not be Zero", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        e.Cancel = true;
                        return;
                    }
                }
                catch
                {
                    MessageBox.Show("The quantity should be decimal value.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    e.Cancel = true;
                    return;
                }
            }
        }

Answer 3

You can try this piece of code

dgv.ClearSelection();
dgv.Rows[rowindex].Cells[columnindex].Selected = true;  

Answer 4

Refer following code:

DataGridView1.CurrentCell = dataGridView1[1, 1].Value;
'or
DataGridView1.CurrentCell = DataGridView1.Item("ColumnName", 5)

dataGridView1.BeginEdit(true)

For more assistance, you can follow discussion in following link:

http://www.vbdotnetforums.com/winforms-grids/11313-setting-cell-focus-datagridview.html

Hope its helpful.