Display selected GridView row value in Modal Popup TextBox using C# in ASP.Net

when i am selecting row from gridview for editing then left date is not coming on popup window ,here is screenshot

https://ibb.co/tz4xVHj

here is edit code c#

        protected void Edit(object sender, EventArgs e)
        {
            using (GridViewRow row = (GridViewRow)((LinkButton)sender).Parent.Parent)
            {
                txtEmpID.ReadOnly = true;
                txtEmpID.Text = row.Cells[0].Text;
                txtEmpName.Text = row.Cells[1].Text;
                txtFahterName.Text = row.Cells[2].Text;
                //ddlSecID.ClearSelection();
                //ddlSecID.Items.FindByText(row.Cells[3].Text).Selected = true;
                //txtjdate.Text = row.Cells[4].Text;
                txtCNIC.Text = row.Cells[3].Text;
                ddlSecID.ClearSelection();
                if (ddlSecID.Items.FindByText(row.Cells[4].Text) != null)
                {
                    ddlSecID.Items.FindByText(row.Cells[4].Text).Selected = true;
                }
                if (ddlstatus.Items.FindByText(row.Cells[5].Text) != null)
                {
                    ddlstatus.Items.FindByText(row.Cells[5].Text).Selected = true;
                }
                txtjdate.Text = Convert.ToDateTime(row.Cells[6].Text).ToString("dd/MM/yyyy");
 
                txtldate.Text = (!string.IsNullOrWhiteSpace(txtldate.Text)) ? Convert.ToDateTime(row.Cells[7].Text).ToString("dd/MM/yyyy") : "";
                // txtldate.Text = (!string.IsNullOrEmpty((row.Cells[7].Text).Trim()) ? Convert.ToDateTime(row.Cells[7].Text).ToString("dd/MM/yyyy") : "");
                // txtldate.Text = (!string.IsNullOrEmpty((row.Cells[7].Text)) ? Convert.ToDateTime(row.Cells[7].Text).ToString("dd/MM/yyyy") : "");
                //  txtldate.Text = (!string.IsNullOrWhiteSpace(txtldate.Text)) ? Convert.ToDateTime(row.Cells[7].Text).ToString("dd/MM/yyyy") : "";
                txtcell.Text = row.Cells[8].Text;
                txtaddress.Text = row.Cells[9].Text;
                popup.Show();
            }
        }