private void ListarBusqueda()
 {
     try
     {
         DataTable dt = new DataTable();
         Categoria C  = new Categoria();
         C.Descripcion = txtBuscarCategoria.Text;
         dt            = C.BuscarCategoria(C.Descripcion);
         dataGridView1.Rows.Clear();
         for (int i = 0; i < dt.Rows.Count; i++)
         {
             dataGridView1.Rows.Add(dt.Rows[i][0]);
             dataGridView1.Rows[i].Cells[0].Value = dt.Rows[i][0].ToString();
             dataGridView1.Rows[i].Cells[1].Value = dt.Rows[i][1].ToString();
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }