Forms Data Controls :: Gridview Update With Related Tables
Nov 24, 2010
I have a problem in getting my gridview to update. The datasource gets its data from 2 related tables using the following select statement:
SELECT StudentSubject.StudentID, Students.[1stName], Students.Surname, Students.Grade, StudentSubject.Subject, StudentSubject.GradeOverall, StudentSubject.ReportYear, StudentSubject.ReportSession, StudentSubject.Criteria1Grade, StudentSubject.Criteria2Grade,
StudentSubject.Criteria3Grade, StudentSubject.Criteria4Grade, StudentSubject.Criteria5Grade, StudentSubject.Criteria6Grade, StudentSubject.Criteria7Grade, StudentSubject.Criteria8Grade, StudentSubject.Criteria9Grade, StudentSubject.Criteria10Grade, StudentSubject.Comment
FROM (Students INNER JOIN StudentSubject ON Students.StudentID = StudentSubject.StudentID)
WHERE (StudentSubject.Subject = ?) AND (StudentSubject.ReportYear = ?) AND (Students.Grade = ?) AND (StudentSubject.ReportSession = ?)
The ? stem from combo box controls which I use to filter the results So far so good!
However, when I try to update the data in just one of the tables, nothing happens, no error, just no update. The update statement I'm using is:
UPDATE StudentSubject SET GradeOverall = ?, Criteria1Grade = ?, Criteria8Grade = ?, Criteria7Grade = ?, Criteria6Grade = ?, Criteria5Grade = ?, Criteria4Grade = ?, Criteria3Grade = ?, Criteria2Grade = ?, Criteria9Grade = ?, Criteria10Grade = ?, Comment =?
WHERE (StudentID = ?) AND (Subject = ?) AND (ReportYear = ?) AND (ReportSession = ?)
I've tried this with a similar setup with just on table and it works fine.
<asp:AccessDataSource ID="DSGrid" runat="server"
DataFile="D:RW docsVisual Studio 2008WebSitesFellbach ReportsApp_DataReports - Copy.mdb"
SelectCommand="SELECT StudentSubject.StudentID, Students.[1stName], Students.Surname, Students.Grade, StudentSubject.Subject, StudentSubject.GradeOverall, StudentSubject.ReportYear, StudentSubject.ReportSession, StudentSubject.Criteria1Grade, StudentSubject.Criteria2Grade,
StudentSubject.Criteria3Grade, StudentSubject.Criteria4Grade, StudentSubject.Criteria5Grade, StudentSubject.Criteria6Grade, StudentSubject.Criteria7Grade, StudentSubject.Criteria8Grade, StudentSubject.Criteria9Grade, StudentSubject.Criteria10Grade, StudentSubject.Comment
FROM (Students INNER JOIN StudentSubject ON Students.StudentID = StudentSubject.StudentID) WHERE (StudentSubject.Subject = ?) AND (StudentSubject.ReportYear = ?) AND (Students.Grade = ?) AND (StudentSubject.ReportSession = ?)"
UpdateCommand="UPDATE StudentSubject SET GradeOverall = ?, Criteria1Grade = ?, Criteria8Grade = ?, Criteria7Grade = ?, Criteria6Grade = ?, Criteria5Grade = ?, Criteria4Grade = ?, Criteria3Grade = ?, Criteria2Grade = ?, Criteria9Grade = ?,
Criteria10Grade = ?, Comment = ? WHERE (StudentID = ?) AND (Subject = ?) AND (ReportYear = ?) AND (ReportSession = ?)">
<SelectParameters>
<asp:ControlParameter ControlID="ComboSubject" DefaultValue="German" Name="Subject" PropertyName="SelectedValue" Type="String" />
<asp:ControlParameter ControlID="ComboYear" DefaultValue="2010 - 2011" Name="ReportYear" PropertyName="SelectedValue" Type="String" />
<asp:ControlParameter ControlID="ComboGrade" DefaultValue="1a" Name="Grade" PropertyName="SelectedValue" Type="String"/>
<asp:ControlParameter ControlID="ComboSession" DefaultValue="November" Name="ReportSession" PropertyName="SelectedValue" Type="String"/>
</SelectParameters>
</asp:AccessDataSource>
<asp:AccessDataSource ID="DSGrid" runat="server"
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