In a Windows forms application, within a DataGridView, I have 4 different DataGridCombobox controlshow can I set up the handler SelectedIndexChanged handler for the first combobox via the EditingControlShowing event. I added code for a second combobox but the SelectedIndexChanged didn't get wired up.

Here's my code. Any advice would be appreciated.

private ComboBox countryCombo;

private EventHandler countryHandler;

private ComboBox partCombo;

private EventHandler partHandler;

private void dataGridView2_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)

{

countryCombo = e.Control as ComboBox;

if (countryCombo != null)

{

//remove any existing handler if there is one

countryCombo.SelectedIndexChanged -= countryHandler;

//add the new handler

countryCombo.SelectedIndexChanged += new EventHandler(countryCombo_SelectedIndexChanged);

}

if (partCombo != null)

{

partCombo.SelectedIndexChanged -= partHandler;

partCombo.SelectedIndexChanged += new EventHandler(partCombo_SelectedIndexChanged);

}

}

private void countryCombo_SelectedIndexChanged(object sender, EventArgs e)

{

ComboBox box = (ComboBox) sender;

//MessageBox.Show(box.Items.Count.ToString());

int rowNum = dataGridView2.CurrentCell.RowIndex;

dataGridView2.BeginEdit(false);

dataGridView2.Rows[0].Cells[2].Value = "abcdef";

dataGridView2.EndEdit();

}

private void dataGridView2_CellContentClick(object sender, DataGridViewCellEventArgs e)

{

int cellColumn = e.ColumnIndex;

//MessageBox.Show("Column is: " + cellColumn.ToString());

}

private void partCombo_SelectedIndexChanged(object sender, EventArgs e)

{

ComboBox box = (ComboBox)sender;

string partNumber = box.SelectedValue as string;

// ToDo: now we need to get the HTSUS from the database so we can

//populate the field

int rowNum = dataGridView2.CurrentCell.RowIndex;

dataGridView2.BeginEdit(false);

dataGridView2.Rows[0].Cells[2].Value = "abcdef";

dataGridView2.EndEdit();

}

}

Al D.