如何获取datagridviewcomboboxcolumn的ValueMember的值

Question

Friends, I'm using datagridviewcomboboxcolumn as column index 1 in my datagridview. I've fetched data from access database table and populated the datagridviewcomboboxcolumn by following manner:

    for (int i = 0; reader.Read(); i++)
        {
            cmbBusCode.Items.Add(reader["BUSINESS_CODE"] + "-" + reader["BUSINESS_DESCRIPTION"]);
            cmbBusCode.ValueMember = "BUSINESS_CODE";
        }

Then I'm writing this:

        cmbBusCode.DisplayIndex = 1;
        cmbBusCode.Width = 200;
        cmbBusCode.Name = "Code";
        cmbBusCode.HeaderText = "Code";

And adding this column as

    dgView.Columns.Add(cmbBusCode);

Combobox is being populated and I can select any one from the list. Now when I'm saving data I want to get the ValueMember of the selected item. To get this value I'm using following code but It's giving the string representation of the field "BUSINESS_CODE" not the value..Please help me so that get ValueMemeber of the selected item..

    foreach (DataGridViewRow row in dgView.Rows)
    {
        string cd = row.Cells["Code"].Value.ToString();
    }

Answer 1

The "item" you are adding to the column doesn't have a "BUSINESS_CODE" column (essentially, the item as you add it is simply a string), so that doesn't work.

What you need to do is assign items that contain multiple columns. One must be the BUSINESS_CODE column (as it is this column you want to be the value for the underlying field in the DataGridView ), the other should be a display column that contains the concatenated value you're adding at the moment ( DisplayMember and ValueMember ).

Easiest would be to create a typed data set, add a table that contains the two columns I described and fill the table with the data from the data reader.

Then, add the table as the data source for the column.

Answer 2

You can try adding a DataGridViewComboBoxCell instead of a string to the cmbBusCode.Items collection. You can then specify Value in the cell. I'm not sure if this will work, but it's worth a try.