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Question

我有一个我填充的 xtragrid，它有 2 个未绑定的列。一切正常，除了当我去过滤列时，过滤弹出窗口正确显示，但是当我双击一个值时，我得到一个 nullreference 异常。我设法找到了异常的位置，它在我的方法 CustomColumnUnboundData 中，我尝试从当前行获取当前对象，但该对象为空。你能帮助我吗？我究竟做错了什么？ e.ListSourceRowIndex 或 GetRow() 似乎不适用于过滤...

     private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)
    {
        GridView gridView = (GridView)sender;

        int dataSourceIndex = e.ListSourceRowIndex;

        Person person = (Person)gridView.GetRow(dataSourceIndex);

        if (e.Column.FieldName == "name" && e.IsGetData)
        {
            e.Value = person.PersonKey.Name;
        }

        if (e.Column.FieldName == "surname" && e.IsGetData)
        {
            e.Value = person.PersonKey.Surname;
        }
    }

Answer 1

已解决。

private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)
        {
            GridView gridView = (GridView)sender;

            Person person = e.Row as Person;
//...
}

devexpress - winforms - xtragrid - 对未绑定列数据的过滤引发 NullReference 异常

devexpress - winforms - xtragrid - filtering on unbound column data throws NullReference exception

xtragrid