这与DevExpess XtraGrid的GridView有关.
我需要从GridView中的任何MasterRow中删除drilldown plus icon(),该GridView没有任何ChildRow数据.
目前,我的GridView中的所有行(MasterRows)都显示了drilldown plus icon().单击向下钻取加上icon()时,将显示带有相应数据的ChildRow.但是,如果ChildRow没有数据,则不显示(扩展)ChildRow.我需要使钻取加上icon()不可见,这样如果ChildRow中没有数据,用户就不会看到它.
我有一个函数来检查ChildRow是否有数据可用,然后允许ChildRow显示(展开)或不显示.
我使用了GridView.OptionsView.ShowDetailButtons,但它隐藏了所有行上的drilldown plus icons().这对我不起作用,因为如果没有ChildRow的数据,我只需要隐藏它.
这是我到目前为止的代码：
private void gridView1_MasterRowGetRelationCount(object sender,MasterRowGetRelationCountEventArgs e)
{
e.RelationCount = 1;
}
private void gridView1_MasterRowEmpty(object sender,MasterRowEmptyEventArgs e)
{
e.IsEmpty = IsRelationEmpty(e.RowHandle,e.RelationIndex);
}
bool IsRelationEmpty(int rowHandleX,int relationIndex)
{
Tuple<string,double,double> row = (Tuple<string,double>)gridView1.GetRow(rowHandleX);
return rowHandleX == DevExpress.XtraGrid.GridControl.InvalidRowHandle || _tfs._dataDictionary[row.Item1.ToString()].Item2.Count == 0;
}
private void gridView1_MasterRowGetChildList(object sender,MasterRowGetChildListEventArgs e)
{
if (IsRelationEmpty(e.RowHandle,e.RelationIndex))
{
return;
}
Tuple<string,double>)gridView1.GetRow(e.RowHandle);
e.ChildList = _tfs._dataDictionary[row.Item1.ToString()].Item2.ToList(); // _tfs.DictionaryToList();
}
private void gridView1_MasterRowGetRelationName(object sender,MasterRowGetRelationNameEventArgs e)
{
e.RelationName = "Work Items with no Size Estimate:";
}
任何方向或建议将不胜感激.
提前致谢,
Marwan (^_^)
解决方法
我建议你按照这个DevExpress线程 –
How to hide disabled expand/collapse buttons for master rows without detail records
The XtraGrid does not provide an option to hide master-detail expand
buttons for empty details. You can work around this limitation via the
CustomDrawCell event.
这是必要的代码：
private void gridView1_CustomDrawCell(object sender,DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs e) {
GridView view = sender as GridView;
if(e.Column.VisibleIndex == 0 && view.IsMasterRowEmpty(e.RowHandle))
(e.Cell as GridCellInfo).CellButtonRect = Rectangle.Empty;
}
}
希望这有帮助..
