DataGridViewComboBoxColumn name/value how?

Question

I thought this was simple like in Access.

User needs to set the value of one column in a datatable to either 1 or 2.

I wanted to present a combobox showing \

Answer 1

This is how you read the value from the grid when the value in the combobox changes:

dataGridView1.EditingControlShowing += dataGridView1_EditingControlShowing;

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    if (dataGridView1.CurrentCell.ColumnIndex == 0 && e.Control is ComboBox)
    {
        ComboBox comboBox = e.Control as ComboBox;
        comboBox.SelectedIndexChanged += LastColumnComboSelectionChanged;
    }
}

private void LastColumnComboSelectionChanged(object sender, EventArgs e)
{
    var sendingCB = sender as DataGridViewComboBoxEditingControl;
    object value = sendingCB.SelectedValue;
    if (value != null)
    {
        int intValue = (int)sendingCB.SelectedValue;
        //do something with value
    }
}

sources: this post