private void gvEmployees_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
 {
     if (e.RowIndex >= 0)
     {
         int           Empid = Convert.ToInt32(gvEmployees.Rows[e.RowIndex].Cells["EmpId"].Value);
         EmployeeEntry st    = new EmployeeEntry();
         st.EmployeeId = Empid;
         st.Operation  = "Update";
         st.Show();
         this.Close();
     }
 }
        private void addToolStripMenuItem3_Click(object sender, EventArgs e)
        {
            EmployeeEntry ne = new EmployeeEntry();

            ne.Show();
        }