[.NET 2.0+] Adding a ComboBox Column to a DataGridView

[jmcilhinney]

This thread provides C# code equivalents for this thread.

private void Form1_Load(object sender, EventArgs e)
{
    this.bindingSource1.DataSource = this.GetChildTable();
    this.dataGridView1.DataSource = this.bindingSource1;
}

private DataTable GetChildTable()
{
    DataTable table = new DataTable();

    table.Columns.Add("ChildID", typeof(int));
    table.Columns.Add("ParentID", typeof(int));
    table.Columns.Add("ChildName", typeof(string));

    table.Rows.Add(1, 3, "Child 1");
    table.Rows.Add(2, 2, "Child 2");
    table.Rows.Add(3, 1, "Child 3");

    return table;
}

private void Form1_Load(object sender, EventArgs e)
{
    this.bindingSource2.DataSource = this.GetParentTable();
    this.Column1.DisplayMember = "ParentName";
    this.Column1.ValueMember = "ParentID";
    this.Column1.DataSource = this.bindingSource2;

    this.bindingSource1.DataSource = this.GetChildTable();
    this.dataGridView1.DataSource = this.bindingSource1;
}

private DataTable GetParentTable()
{
    DataTable table = new DataTable();

    table.Columns.Add("ParentID", typeof(int));
    table.Columns.Add("ParentName", typeof(string));

    table.Rows.Add(1, "Parent 1");
    table.Rows.Add(2, "Parent 2");
    table.Rows.Add(3, "Parent 3");

    return table;
}

private DataTable GetChildTable()
{
    DataTable table = new DataTable();

    table.Columns.Add("ChildID", typeof(int));
    table.Columns.Add("ParentID", typeof(int));
    table.Columns.Add("ChildName", typeof(string));

    table.Rows.Add(1, 3, "Child 1");
    table.Rows.Add(2, 2, "Child 2");
    table.Rows.Add(3, 1, "Child 3");

    return table;
}

Note that, when you add that code, you'll also have to select the form's Load event handler in the designer.