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11.09.2006 at 10:29AM PST, ID: 22055114
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5.8

Update DB using DataSet Modifications

Zone: Microsoft Visual Basic.Net
Tags: dataset, modifications, update
Hi,,

Basically, i am currently dumping a specific record from the DB(using a DataAdapter) into a DS... then i'm making changes to the DS manually based on the type of submission from the user, then i'm TRYING to update the database, for that one record, to match the new DS contents. But somehow it gives me an Unhandled Exception Error without further instructions except the stack trace... grrr... anyway... is there a way to update/modify an existing row just by dumping the modified DS into the DA and using Update() ??

Here's my code, it will give you a better idea of what i'm trying to do...

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim Conn As New OleDbConnection(ConfigurationSettings.AppSettings("conInterDB"))
        Dim DA As New OleDbDataAdapter("SELECT * FROM Requests WHERE RequestID=" & Request.Form("RequestID"), Conn)
        Dim DS As New DataSet
        Dim row As DataRow
        DA.MissingSchemaAction = MissingSchemaAction.AddWithKey

        DA.Fill(DS, "RS")


        If DS.Tables(0).Rows.Count = 0 Then
            ErrorMsg.Text = "<center><b>Error 5! Could not find specific record to save to!</b></center>"
            DA = Nothing
            DS = Nothing
            Response.End()
        End If

        DS.AcceptChanges()

        If Request.Form("ActionPerf") = "DevSave" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Saved in Log by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("DevComments") = DS.Tables(0).Rows(0).Item("DevComments") & Request.Form("DevComments")
            DS.Tables(0).Rows(0).Item("WorkFiles") = CInt(DS.Tables(0).Rows(0).Item("WorkFiles")) + CInt(Request.Form("DevDocsSess"))
            DS.Tables(0).Rows(0).Item("WorkTime") = CInt(DS.Tables(0).Rows(0).Item("WorkTime")) + CInt(Request.Form("DevTimeSess"))
            DS.Tables(0).Rows(0).Item("Status") = "Working"
           
        ElseIf Request.Form("ActionPerf") = "WebSave" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Saved by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("WebComments") = DS.Tables(0).Rows(0).Item("WebComments") & Request.Form("WebComments")
            DS.Tables(0).Rows(0).Item("WebTypeID") = Request.Form("WebType")
            DS.Tables(0).Rows(0).Item("WebSiteID") = Request.Form("WebSites")
            DS.Tables(0).Rows(0).Item("AssignedTo") = Request.Form("Assigning")
            DS.Tables(0).Rows(0).Item("Status") = "Working"

        ElseIf Request.Form("ActionPerf") = "Close" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Closed by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("WebComments") = DS.Tables(0).Rows(0).Item("WebComments") & Request.Form("WebComments")
            DS.Tables(0).Rows(0).Item("WebTypeID") = Request.Form("WebType")
            DS.Tables(0).Rows(0).Item("WebSiteID") = Request.Form("WebSites")
            DS.Tables(0).Rows(0).Item("AssignedTo") = Request.Form("Assigning")
            DS.Tables(0).Rows(0).Item("Status") = "Closed"

        ElseIf Request.Form("ActionPerf") = "Delete" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Deleted by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("WebComments") = DS.Tables(0).Rows(0).Item("WebComments") & Request.Form("WebComments")
            DS.Tables(0).Rows(0).Item("WebTypeID") = Request.Form("WebType")
            DS.Tables(0).Rows(0).Item("WebSiteID") = Request.Form("WebSites")
            DS.Tables(0).Rows(0).Item("AssignedTo") = Request.Form("Assigning")
            DS.Tables(0).Rows(0).Item("Status") = "Deleted"

        ElseIf Request.Form("ActionPerf") = "Assign" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Assigned to " & Request.Form("Assigning") & " by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("WebComments") = DS.Tables(0).Rows(0).Item("WebComments") & Request.Form("WebComments")
            DS.Tables(0).Rows(0).Item("WebType") = Request.Form("WebType")
            DS.Tables(0).Rows(0).Item("WebSite") = Request.Form("WebSites")
            DS.Tables(0).Rows(0).Item("AssignedTo") = Request.Form("Assigning")
            DS.Tables(0).Rows(0).Item("Status") = "Working"

        ElseIf Request.Form("ActionPerf") = "Publish" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Published by " & Session("UN") & " on " & Today.Date & "," & "Confirmation sent to client"
            DS.Tables(0).Rows(0).Item("WebComments") = DS.Tables(0).Rows(0).Item("WebComments") & Request.Form("WebComments")
            DS.Tables(0).Rows(0).Item("WebTypeID") = Request.Form("WebType")
            DS.Tables(0).Rows(0).Item("WebSiteID") = Request.Form("WebSites")
            DS.Tables(0).Rows(0).Item("AssignedTo") = Request.Form("Assigning")
            DS.Tables(0).Rows(0).Item("Status") = "Completed"

        ElseIf Request.Form("ActionPerf") = "SendQA" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "Sent to QA by " & Session("UN") & " on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("DevComments") = DS.Tables(0).Rows(0).Item("DevComments") & Request.Form("DevComments")
            DS.Tables(0).Rows(0).Item("OAT") = DS.Tables(0).Rows(0).Item("AssignedTo")
            DS.Tables(0).Rows(0).Item("AssignedTo") = "QA"
            DS.Tables(0).Rows(0).Item("Status") = "Quality Assurance"

        ElseIf Request.Form("ActionPerf") = "QADone" Then
            DS.Tables(0).Rows(0).Item("History") = DS.Tables(0).Rows(0).Item("History") & "QA Completed on " & Today.Date & ","
            DS.Tables(0).Rows(0).Item("DevComments") = DS.Tables(0).Rows(0).Item("DevComments") & Request.Form("DevComments")
            DS.Tables(0).Rows(0).Item("AssignedTo") = "Webmaster"
            DS.Tables(0).Rows(0).Item("Status") = "Publishing"
        End If
       
        DS.AcceptChanges()
        DA.Update(DS)


        'Put user code to initialize the page here

    End Sub
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Question Stats
Zone: Programming
Question Asked By: MaxOvrdrv2
Solution Provided By: riyazthad
Participating Experts: 3
Solution Grade: A
Views: 0
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11.09.2006 at 10:47AM PST, ID: 17908330

Rank: Sage

graye:

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11.09.2006 at 11:05AM PST, ID: 17908471
MaxOvrdrv2:

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11.09.2006 at 11:08AM PST, ID: 17908496
MaxOvrdrv2:

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11.09.2006 at 11:54AM PST, ID: 17908873

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11.09.2006 at 12:00PM PST, ID: 17908932

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riyazthad:

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11.09.2006 at 12:09PM PST, ID: 17908998
MaxOvrdrv2:

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11.09.2006 at 12:18PM PST, ID: 17909075

Rank: Sage

graye:

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11.09.2006 at 12:36PM PST, ID: 17909241

Rank: Master

riyazthad:

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11.09.2006 at 12:41PM PST, ID: 17909285

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11.09.2006 at 12:44PM PST, ID: 17909321

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11.09.2006 at 04:33PM PST, ID: 17910864

Rank: Wizard

vbturbo:

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11.14.2006 at 04:47AM PST, ID: 17937572
MaxOvrdrv2:

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11.14.2006 at 04:49AM PST, ID: 17937581
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11.14.2006 at 04:50AM PST, ID: 17937585
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11.14.2006 at 04:59AM PST, ID: 17937636
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11.14.2006 at 05:15AM PST, ID: 17937721
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11.14.2006 at 05:41AM PST, ID: 17937858
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11.14.2006 at 06:57AM PST, ID: 17938501
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11.14.2006 at 09:38AM PST, ID: 17939840

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