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Ben Tsai
25
How to access child rows of WinGrid bound to hierarchical data?
posted

I have a UltraDataGrid that I've bound to an UltraDataSource. My data source has two levels.

I am having trouble accessing the child bands through the grid. I know that myDataGrid.Rows exposes a RowsCollection for band 0 (the top-level band). What I would like to do is get a RowsCollection for any of the child bands that I have defined in my UltraDataSource.

I have tried code like this, but it still only gives me the top-level rows:

foreach (UltraGridBand band in this.detectionUltraGrid.DisplayLayout.Bands)
{
    foreach (UltraGridRow row in band.Layout.Rows)
    {
        // This RowsCollection is the top level
        foreach (UltraGridCell cell in row.Cells)
        {
            if (cell.Value == DBNull.Value)
            {
                cell.Hidden = true;
            }
        }
    }

}

How do I get to the child rows?

Thanks,
Ben

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  • 25
    posted

    With some help, I think I figured out one way to access the child bands:

    foreach (UltraGridRow row in this.myUltraGrid.Rows)
    {
      foreach (UltraGridChildBand childBand in row.ChildBands)
      {
        foreach (UltraGridRow childRow in childBand.Rows)
        {
          foreach (UltraGridCell cell in childRow.Cells)
          {
            if (cell.Value == DBNull.Value)
            {
              cell.Hidden = true;
            }
          }
        }
      }
    }

    Is there a better way? With less nesting?:)

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