Delete and Edit row in datagridview and in database

private void datagridview _CellClick(object sender, DataGridViewCellEventArgs e)
{

  // Ignore others clicks
  if (e.RowIndex < 0 || e.ColumnIndex = datagridview.Column"Col_DeButton"].Index)
    return;
  else
  {
    // Delete from database
    int iRtnVal = 0;

    SqlConnection sqlConn = new SqlConnection(Conexion);
    SqlCommand sqlCmd = new SqlCommand();
    sqlCmd.CommandText = "DELETE FROM ...";
    sqlCmd.Connection = sqlConn;

    try
    {
      sqlCmd.Connection.Open();
      iRtnVal = sqlCmd.ExecuteNonQuery();
    }
    catch (Exception Ex)
    {
      Thread.CurrentThread.Abort();
    }
    finally
    {
      sqlCmd.Connection.Close();
    }

    // Reload the datagridview
    SqlDataAdapter sqlAdapt = new SqlDataAdapter("SELECT * FROM ...", sqlConn);
    DataSet ds = new DataSet();
    DataTable dt = new DataTable();

    try
    {
      sqlConn.Open();
      sqlAdapt.Fill(ds, "Datas");
    }
    catch (Exception Ex)
    {
      Thread.CurrentThread.Abort();
    }
    finally
    {
      sqlConn.Close();
    }

    if (ds.Tables["Datos"] != null)
      dt = ds.Tables["Data"];
    else
      dt = null;


    datagridview.datasource = dt;
  }
}