在DevExpress控件的主从网格视图中将详细列表设为只读

Question

Can you give me an answer how to make detailed list read-only in master-detail GridView in DevExpress ? The GridView.Columns[columnIndex].ColumnEdit property is null. When I try to make new RepositoryItem like bellow:

private void gridView_MasterRowExpanded(object sender, CustomMasterRowEventArgs e)
{
    var masterView = sender as GridView;
    GridView detailView = masterView?.GetDetailView(e.RowHandle, e.RelationIndex) as GridView;
    if(detailView == null) return;

    RepositoryItem ri = new RepositoryItem() { ReadOnly = true };
    detailView.Columns[0].ColumnEdit = ri;
}

It returns empty cell in the view.

Answer 1

RepositoryItem is a base class and should not be used directly in your code. If you need to make a column read-only, set the GridColumn.OptionsColumn.ReadOnly property to true instead.

I would also recommend reading the Modify and Validate Cell Values help article for more information in this regard.