WPF XamGrid Custom Column Disappearing Values

440

Charles posted over 12 years ago

Hi, I need to represent hierarchical data in my XamGrid in a particular format, where expandable rows have a "+/-" next to them. To accomplish this, I overrode the TextColumn class and its TextColumnContentProvider to add in the +/- behavior. It works, but when the window is grown, for some reason the cells that were not visible before don't display their data. What can I do to fix this?

I tried to attach a sample solution illustrating the problem, but the forum kept giving me "500 Server Error" errors (I guess you guys are having problems with the new site). I don't have access to filesharing websites on this PC, but if you email me then I can reply with the solution.

Thanks!

TestCustomColumn.zip

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28407

[Infragistics] Matt Traynor posted over 12 years ago

HI,

I am reviewing your issue and have replicated it.

I am working on a resolution.

Sincerely,
Matt
Developer Support Engineer
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28407

[Infragistics] Matt Traynor posted over 12 years ago in reply to [Infragistics] Matt Traynor

HI,

I was able to prevent the nullrefrence execption with the following code snippet:


 void expandBlock_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)  
       {       
      var r = (Row)_cell.Row;
            r.IsExpanded = !r.IsExpanded;
            ExpandColumnClickEventArgs _clickeventargs =   new ExpandColumnClickEventArgs(_cell.Row.Index, _cell.Row.Data);   
          if (_column != null)
            {
                _column.OnClick(_clickeventargs);       
      }
            else
            {                 _column = _cell.Column as ExpandColumn;  
                              _column.OnClick(_clickeventargs);
            }   
      }