Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Changing summary value for UltraWinGrid

Posted on 2009-03-31
5
Medium Priority
?
5,526 Views
Last Modified: 2013-11-15
I am using ultrawingrid which summary enabled showing the sum of the column. Now I want to make the summary value to zero and it should show only tthe sum of those rows which i select using check box.
0
Comment
Question by:srikanthreddyn143
  • 4
5 Comments
 
LVL 17

Accepted Solution

by:
ZeonFlash earned 500 total points
ID: 24033447
The summary value in a column is a read-only property, so you can't just force it to be a value.  Instead, you can create a custom summary calculator.

The following example assumes you have a column "Selected" (boolean) and a column "ValueColumn" (decimal).  After you check/uncheck the Selected cell, it will automatically re-calculate the summary (if it's in view)
	Private Class MyCustomSummarySettings
		Implements ICustomSummaryCalculator
 
		Private decTotal As Decimal = 0.0
 
		Public Sub New()
		End Sub
 
		'Reset the summary total
		Private Sub BeginCustomSummary(ByVal summarySettings As SummarySettings, ByVal rows As RowsCollection) Implements ICustomSummaryCalculator.BeginCustomSummary
			decTotal = 0
		End Sub
 
		'Perform the summary 
		Private Sub AggregateCustomSummary(ByVal summarySettings As SummarySettings, ByVal row As UltraGridRow) Implements ICustomSummaryCalculator.AggregateCustomSummary
			If Not row.Cells("Selected").Value Then Exit Sub
 
			Try
				decTotal += Convert.ToDecimal(row.GetCellValue(summarySettings.SourceColumn))
			Catch ex As Exception
				MsgBox("Error converting cell value to decimal", MsgBoxStyle.Critical)
			End Try
		End Sub
 
		'Return the summary value
		Private Function EndCustomSummary(ByVal summarySettings As SummarySettings, ByVal rows As RowsCollection) Implements ICustomSummaryCalculator.EndCustomSummary
			Return decTotal
		End Function
	End Class
 
	Private Sub UltraGrid1_InitializeLayout(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs) Handles UltraGrid1.InitializeLayout
		Dim summary As Infragistics.Win.UltraWinGrid.SummarySettings
 
		'Create a new summary object for the band
		summary = UltraGrid1.DisplayLayout.Bands(0).Summaries.Add("CustomSummary")
 
		summary.SummaryType = SummaryType.Custom
		summary.SourceColumn = UltraGrid1.DisplayLayout.Bands(0).Columns("ValueColumn")
		summary.CustomSummaryCalculator = New MyCustomSummarySettings
	End Sub

Open in new window

0
 
LVL 11

Author Comment

by:srikanthreddyn143
ID: 24034236
Hi Zeon,

Thanks for your reply.It was throwing an exception "Cannot convert 'True' to Long" when i used code in this way.

 'Perform the summary 
    Private Sub AggregateCustomSummary(ByVal summarySettings As SummarySettings, ByVal row As UltraGridRow) Implements ICustomSummaryCalculator.AggregateCustomSummary
        Try
            If Not row.Cells("CB").Value.ToString Then
                Exit Sub
            Else
                decTotal += Convert.ToDecimal(row.Cells("Amount").Value)
            End If
        Catch ex As Exception
            ExceptionManager.Publish(ex)
        End Try
    End Sub

Open in new window

0
 
LVL 11

Author Comment

by:srikanthreddyn143
ID: 24034252
It was throwing exception At line "If Not row.Cells("CB").Value"
0
 
LVL 11

Author Comment

by:srikanthreddyn143
ID: 24034831
Thanks.
Its working fine when i kept "If Not row.Cells("CB").Value = "True" Then ". But how can I have the summary as a footer. Right now it is scrolling with the datagrid.
0
 
LVL 11

Author Comment

by:srikanthreddyn143
ID: 24038702
Thank you. Thats fine.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Programmer's Notepad is, one of the best free text editing tools available, simply because the developers appear to have second-guessed every weird problem or issue a programmer is likely to run into. One of these problems is selecting and deleti…
Update (December 2011): Since this article was published, the things have changed for good for Android native developers. The Sequoyah Project (http://www.eclipse.org/sequoyah/) automates most of the tasks discussed in this article. You can even fin…
THe viewer will learn how to use NetBeans IDE 8.0 for Windows to perform CRUD operations on a MySql database.
The viewer will learn how to synchronize PHP projects with a remote server in NetBeans IDE 8.0 for Windows.

916 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question