Question

I have a custom DataGridView column that uses an embedded control that pops up a search window for the value of that column. The important thing is that the databound column is a numeric ID, but the custom column cells display a text description.

How do I get the column to sort on the text description rather than the numeric ID?

I don’t see a way to override the column to sort by FormattedValue instead of Value. I could ensure that the description shows up as a separate column in my data table, but I don’t see any way to say ‘use column VALUE_ID as DataMember but column VALUE_DESCRIPITON as ‘SortMember”

Answer 1

You can use a technique described in the following article Column Sort Modes

private bool ascending; private int sortColumn; private void dgv_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) {     List<SomeObject> list = (List<SomeObject>)someBindingSource.DataSource;     if (e.ColumnIndex != sortColumn) ascending = false;      int 1 = e.ColumnIndex;     if (i == DescriptionColumn.Index)         list.Sort(new Comparison<SomeObject>((x,y) => x.ID.CompareTo(y.ID)));      sortColumn = e.ColumnIndex;     ascending = !ascending;     if (!ascending) list.Reverse():      someBindingSource.ResetBindings(false);     // you may also have to call dgv.Invalidate(); }