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GridGrouping Control, Read only Rows

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20415 Oct 17,2004 05:43 PM Oct 19,2004 01:33 AM Windows Forms 3
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Tags: Grouping
Paul
Asked On October 17, 2004 05:43 PM

Hi, I want to know how you set rows to be read only. I know I can set columns to read only using: Me.groupingdatagrid1.TableDescriptor.Columns.Item(0).ReadOnly = True but i can''t seem to find any way to make rows read only. If any of you know, please let me know. Thanks, Paul

Administrator [Syncfusion]
Replied On October 18, 2004 03:27 PM

You can do this handling QueryCellStyleInfo. In the handler, explicitly set e.Style.ReadOnly = true based on whatever criteria you need. This code sets a row readonly is the AAs field value is AAA4.
private void gridGroupingControl1_QueryCellStyleInfo(object sender, GridTableCellStyleInfoEventArgs e)
{
	if(e.TableCellIdentity.TableCellType == GridTableCellType.RecordFieldCell
		|| e.TableCellIdentity.TableCellType == GridTableCellType.AlternateRecordFieldCell)
	{
		GridTableDescriptor td = this.gridGroupingControl1.TableDescriptor;
		GridRecordRow rec = e.TableCellIdentity.DisplayElement as GridRecordRow;
		if(rec != null)
		{
			DataRowView drv = rec.GetData() as DataRowView;
			if(drv != null && drv["AAs"].ToString() == "AA4")
			{
				e.Style.ReadOnly = true;
			}
		}
	}
}

Paul
Replied On October 18, 2004 09:35 PM

Thanks for the function. I couldnt port it to VB.net, could you paste in a vb version?? also, will this work with a currency field. Thanks

Administrator [Syncfusion]
Replied On October 19, 2004 01:33 AM

It should work for any cell type. Here is a link that does a pretty good job of converting C# to VB. http://authors.aspalliance.com/aldotnet/examples/translate.aspx
Private Sub gridGroupingControl1_QueryCellStyleInfo(sender As Object, e As GridTableCellStyleInfoEventArgs)
   If e.TableCellIdentity.TableCellType = GridTableCellType.RecordFieldCell Or e.TableCellIdentity.TableCellType = GridTableCellType.AlternateRecordFieldCell Then
      Dim td As GridTableDescriptor = Me.gridGroupingControl1.TableDescriptor
      Dim rec As GridRecordRow = e.TableCellIdentity.DisplayElement ''
      If Not (rec Is Nothing) Then
         Dim drv As DataRowView = rec.GetData() ''
         If Not (drv Is Nothing) And drv("AAs").ToString() = "AA4" Then
            e.Style.ReadOnly = True
         End If
      End If
   End If
End Sub ''gridGroupingControl1_QueryCellStyleInfo

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