Question

我想在用RowValues列表填充的DataGrid中显示一些（但不是全部）数据：

public class RowValue 
{
    public int id;
    public string name;
    public List<A> list1;
    public List<B> list2;
}

public class A
{
    public int id;
    public string val1;
    public string val2;
    ...
}

public class B
{
    public int id;
    public string val1;
    public string val2;
    ...
}

当我在Master-Detail DataGrid中展开一行时，我看到两张卡显示每个列表（list1和list2）的行。我想隐藏list1以免在DataGrid中查看。目前，我可以隐藏list1中的所有列，但是带有标题的空卡仍在污染GridView。

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

   //disabling Columns
   if(detailView.LevelName == "list1")
       foreach(var column in detailView.Columns)
           column.Visible = false;
}

为了说明我的问题，我在卡片上附上了删除了所有列的图片。

Empty card I wish to remove from view.

Answer 1

我成功地完成了这项任务。我认为最简单的答案是在MasterRowEmpty事件中将e.IsEmpty Arg设置为true。参见下面的代码：

void gridView_MasterRowEmpty(object sender, MasterRowEmptyEventArgs e)
{
    GridView view = sender as GridView;
    if(view.GetRelationName(e.RowHandle, e.RelationIndex) == "list1")   // == "Card Name"
        e.IsEmpty = true;
}

如何在DevExpress Master Detail DataGrid中隐藏某些卡片？

1 个答案: