Solved

Changing summary value for UltraWinGrid

Posted on 2009-03-31
5
5,257 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 125 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

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

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…
How to install Selenium IDE and loops for quick automated testing. Get Selenium IDE from http://seleniumhq.org Go to that link and select download selenium in the right hand columnThat will then direct you to their download page.From that page s…
The viewer will learn how to use NetBeans IDE 8.0 for Windows to connect to a MySQL database. Open Services Panel: Create a new connection using New Connection Wizard: Create a test database called eetutorial: Create a new test tabel called ee…
The viewer will learn how to synchronize PHP projects with a remote server in NetBeans IDE 8.0 for Windows.

914 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now