Hi
I have a datagridview control displayed on a form which is populated by a datatable created by a stored procedure. I dynamically add a datagridviewcomboboxcolumn to the datagridview control and populate each of the combobox's with a list which is dependant on another field in the underlying datatable. the user can then select an option for each row in the datagridview control. All this works perfectly except for the last row of the datatable. The user can select an option from the list without issue but as soon as the cell is exited the valuemember of the lastrow combobox returns zero.

Any help would be greatly appreciated.

Hi,

Sorry. I am not able to reproduce this issue. Could you please show us the code?

I use the following code to test.

private void Form1_Load(object sender, EventArgs e)

{

DataTable dt01 = new DataTable();

dt01.Columns.Add("col01");

dt01.Columns.Add("col02");

dt01.Rows.Add("1","aa");

dt01.Rows.Add("2","bb");

DataTable dt02 = new DataTable();

dt02.Columns.Add("ID");

dt02.Columns.Add("Name");

dt02.Rows.Add("1", "aa");

dataGridView1.AutoGenerateColumns = false;

dataGridView1.DataSource = dt02;

DataGridViewComboBoxColumn cmb = new DataGridViewComboBoxColumn();

cmb.DataSource = dt01;

cmb.DataPropertyName = "ID";

cmb.DisplayMember = "col02";

cmb.ValueMember = "col01";

dataGridView1.Columns.Add(cmb);

}

private void button1_Click(object sender, EventArgs e)

{

Console.WriteLine(dataGridView1.Rows[dataGridView1.Rows.Count - 2].Cells[0].Value.ToString());

}

Best regards,

Ling Wang

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