Solved

GridView does not update with changed data

Posted on 2012-12-29
2
290 Views
Last Modified: 2012-12-30
Hello,

My GridView is not updating, even though when I perform a load, add, edit, or delete I specifically call a subroutine (called Binddata) to refetch the data and rebind it. What could be wrong ?

The data is there, and when I do a page refresh it gets added (and sometimes will actually appear twice).

I am extra confused because I also do a Binddata in my Page load - so I should have already done 2 databinds - but none are appearing !

<script runat="server">
   
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)        
        
        If Not Page.IsPostBack Then

            MultiView1.ActiveViewIndex = 0
            
        End If

        ' Bind the datagrid        
        BindData
           
    End Sub

    Sub BindData()

        ' Prepare the datagrid
        Editgrid.Columns(0).Visible = "false"
        EditGrid.Columns(1).Visible = "false"
        EditGrid.Columns(2).HeaderText = Ttext(26)
        EditGrid.Columns(3).HeaderText = Ttext(27)
        EditGrid.Columns(4).HeaderText = Ttext(28)
        EditGrid.Columns(5).HeaderText = Ttext(29)
        EditGrid.Columns(6).HeaderText = Ttext(30)
        EditGrid.Columns(7).HeaderText = Ttext(13)

        ' Get data to fill datagrid
        Dim MySQL5 As String = "SELECT g.gamenum, l.shortname as Gamelocation, g.gamedatetime as Gamedates, g.gametype, lgh.groupname + ' : Practice', ct.lastname + ', ' + ct.firstname as Snackresp, ct1.lastname + ', ' + ct1.firstname as Refresp FROM games g, contacts ct, contacts ct1, locations l, leagues lgh, leagues lga, leaguesetup ls WHERE g.gamelocnum = l.locnum and g.snacknum = ct.usernum and g.refereenum = ct1.usernum and lgh.groupnum = g.hometeamnum and lga.groupnum = g.awayteamnum and g.leaguenum = " & Session("leaguenum") & " order by g.gamedatetime desc"
        Dim objCmd5 As New SqlDataAdapter(MySQL5, MyConn)
        objCmd5.Fill(ds, "gametable")
        EditGrid.DataSource = ds.Tables("gametable").DefaultView
        EditGrid.DataBind()
    End Sub
        
    
    Protected Sub AddItem(ByVal sender As Object, ByVal e As System.EventArgs)
         
	    Gamedates = picker2.Text
	    Gametimes = Gametime.Text
        
        cmd.Connection = MyConn
        cmd.Connection.Open()
        
        ' Insert the new item                    
        cmd.CommandText = "Insert into games (Leaguenum, Gametype, Gamelocnum, Gamedatetime, Hometeamnum, Awayteamnum, needref, refereenum, needsnack, snacknum, Gamestatus) values (" & Session("Leaguenum") & ", '" & Inputtype & "', " & Rinklocation.SelectedItem.Value & ",Convert(datetime,'" & gamedates & " " & Gametimes & "'), " & Hometeam.SelectedItem.Value & ", " & Awayteam.SelectedItem.Value & ", '" & needrefs.SelectedItem.Text & "', " & Refentry & ", '" & needsnacks.SelectedItem.Text & "'," & Snackentry & ", 'Not played')"
        cmd.ExecuteNonQuery()
        
        cmd.Connection.Close()
	
         BindData
        
    End Sub
    
    Protected Sub EditItem(ByVal sender As Object, ByVal e As System.EventArgs)
 
            cmd.Connection = MyConn
            cmd.Connection.Open()

            Gamenum = Request.QueryString("gnum")
		
            gamedates = picker2.Text
            Gametimes = Gametime.text
    
            cmd.CommandText = "Update games set Gametype =  '" & Gametype.SelectedItem.Text & "', Gamelocnum = " & Rinklocation.SelectedItem.Value & ", Gamedatetime = Convert(datetime,'" & gamedates & " " & Gametimes & "'), Gamestatus = 'Not played',  Eventtitle = '', Eventdesc = '', Hometeamnum = " & Hometeam.SelectedItem.Value & ", Awayteamnum = " & Awayteam.SelectedItem.Value & ", needref = '" & needrefs.SelectedItem.Text & "', refereenum = " & Refentry & ", needsnack = '" & needsnacks.SelectedItem.Text & "', snacknum = " & Snackentry & " where Gamenum = " & Session("myitemnum")
            cmd.ExecuteNonQuery()
            cmd.Connection.Close()
            
             BindData
        
    End Sub
    
    Protected Sub DeleteItem(sender As Object, e As System.Web.UI.WebControls.GridViewDeleteEventArgs)
 
        ' Get the gamenum
        Dim selectedRecord As DataKey = EditGrid.DataKeys(EditGrid.SelectedIndex)
        Gamenum = selectedRecord.Value
    
        cmd.Connection = MyConn
        cmd.Connection.Open()
    
        ' Delete game 
        cmd.CommandText = "Update games set gamestatus = 'disabled' WHERE gamenum = " & Gamenum
        cmd.ExecuteNonQuery()
        cmd.Connection.Close()

         BindData
        
    End Sub
        
    Protected Sub LoadItem(ByVal sender As Object, ByVal e As EventArgs)
  
        Dim selectedRecord As DataKey = EditGrid.DataKeys(EditGrid.SelectedIndex)
        MyItemnum = selectedRecord.Value
        Session("myitemnum") = MyItemnum

        cmd.Connection = MyConn
        cmd.Connection.Open()
        cmd.CommandText = "Select Gametype, Gamelocnum, right(Convert(varchar,gamedatetime,0),7) as MyTime, Convert(varchar,gamedatetime,101)as DTT, Hometeamnum, Awayteamnum, needref, Refereenum, needsnack, snacknum from games where Gamenum = " & Session("myitemnum")
               MyReader = cmd.ExecuteReader()
		
                While MyReader.Read()
                    Agametype = MyReader("Gametype").ToString()
                    TGamelocnum = MyReader.GetInt32(1)
                    Gametime.Text = MyReader("MyTime").ToString()
                    picker2.Text = MyReader("DTT").ToString()
                        THometeamnum = MyReader("Hometeamnum")
                        TAwayteamnum = MyReader("Awayteamnum")
                        Tneedref = MyReader("needref")
                        Tneedsnack = MyReader("needsnack")
                        Tsnacknum = MyReader("snacknum")

                End While
		
                MyReader.Close()
                cmd.Connection.Close()
            
            ' Fill the datagrid
            BindData
 
    End Sub
     
</script>

<asp:Content ID="Content3" ContentPlaceHolderID="Mycontent" runat="Server">   
    
    <table>
        <tr>
            <td class="WizardTitle">
                <asp:Label ID="Pagetitle" runat="server"></asp:Label>
            </td>
        </tr>
        <tr>
            <td class="WizardInstructions">
                <asp:Label ID="Helporerror" runat="server"></asp:Label></td>
        </tr>
        <tr>
            <td class="WizardContent">
                <div align="center">
                <table>
                    <tr>
                        <td style="padding: 5 0 20 0">
                            <asp:MultiView ID="MultiView1" runat="server" ActiveViewIndex="0">
                                <asp:View ID="Instructions" runat="server">
                                    <h5>
                                        <asp:Label ID="GeneralInstructions" runat="server" />
                                    </h5>
                                </asp:View>
                                <asp:View ID="Managepages" runat="server">
                                        <asp:Panel ID="ShowForm" runat="server">
                                        <table class="InsideBox">
                                            <tr>
                                                <td colspan="3" class="InsideboxSubTitle">
                                                    <asp:Label ID="eventTitle" runat="server" />
                                                </td>
                                            </tr>
                                            <tr>
                                                <td class="aptfont2" style="padding-top: 12px; width:200px">
                                                    <asp:Label ID="eventtypeLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Gametype" OnSelectedIndexChanged="CheckEvent" AutoPostBack="true" Width="110" runat="server" />
                                                </td>
                                                <td class="aptfont2" style="padding-top: 12px; width:250px">
                                                    <asp:Label ID="gamedateLabel" runat="server" /><br />
                                                    <asp:TextBox ID="picker2" runat="server" Width="150" />&nbsp;&nbsp;<asp:Image ID="Image1" runat="server"
                                                        ImageUrl="~/images/calendar1.gif" ImageAlign="Middle" />
                                                    <ajaxToolkit:CalendarExtender runat="server" TargetControlID="picker2" 
                                                        PopupButtonID="Image1" />
                                                    <asp:RequiredFieldValidator ID="CompareValidator4" runat="server" ControlToValidate="picker2"
                                                        Display="None" ErrorMessage="You must enter a date" />
                                                    <ajaxToolkit:ValidatorCalloutExtender ID="ValidatorCalloutExtender4"  runat="server" TargetControlID="CompareValidator4" /> 
                                                </td>
                                                <td class="aptfont2" style="padding-top: 12px; width:250px">
                                                    <asp:Label ID="gametimeLabel" runat="server" Text="Game time"/><br />
                                                        <asp:TextBox ID="Gametime" runat="server" Width="150" />
                                                        <ajaxToolkit:MaskedEditExtender ID="MaskedEditExtender3" runat="server" TargetControlID="Gametime"
                                                            Mask="99:99" MessageValidatorTip="true" OnFocusCssClass="MaskedEditFocus" OnInvalidCssClass="MaskedEditError"
                                                            MaskType="Time" AcceptAMPM="true" ErrorTooltipEnabled="False" />
                                                </td>
                                            </tr>
                                            <tr>
                                                <td class="aptfont2">
                                                    <asp:Label ID="locationLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Rinklocation" Width="150" runat="server" DataTextField="Shortname"
                                                        DataValueField="Locnum">
                                                    </asp:DropDownList>
                                                </td>
                                                <td class="aptfont2">
                                                    <asp:Label ID="hometeamLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Hometeam" Width="200" runat="server" DataTextField="Hometeamname"
                                                        DataValueField="Hometeamnum" OnSelectedIndexChanged="DisplaySnacks" AutoPostBack="true">
                                                    </asp:DropDownList> 
                                                </td>
                                                <td class="aptfont2">
                                                    <asp:Label ID="awayteamLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Awayteam" Width="200" runat="server" DataTextField="Awayteamname"
                                                        DataValueField="Awayteamnum" OnSelectedIndexChanged="DisplaySnacks" AutoPostBack="true">
                                                    </asp:DropDownList> 
                                                </td>
                                            </tr>
                                            <tr>
                                                <td colspan="3" class="InsideboxSubTitle">
                                                    <asp:Label ID="refTitle" runat="server" />
                                                </td>
                                            </tr>
                                            <tr>
                                                <td class="aptfont2" style="padding-top: 12px"> 
                                                    <asp:Label ID="refreqdLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="needrefs" Width="110" runat="server" OnSelectedIndexChanged="DisplayRef" AutoPostBack="true" >
                                                    </asp:DropDownList>
                                                </td>
                                                <td class="aptfont2" style="padding-top: 12px"> 
                                                    <asp:Label ID="gamerefLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Gameref" Width="200" runat="server" DataTextField="Fullname"
                                                        DataValueField="Usernum">
                                                    </asp:DropDownList>
                                                </td>
                                                <td>
                                                </td>
                                            </tr>
                                            <tr>
                                                <td colspan="3" class="InsideboxSubTitle">
                                                    <asp:Label ID="snacksTitle" runat="server" />
                                                </td>
                                            </tr>
                                            <tr>
                                                <td colspan="3" style="text-align:left; font-size: 10pt">
                                                    <asp:Label ID="informLabel" runat="server" />
                                                </td>        
                                            </tr>
                                            <tr>
                                                <td class="aptfont2" style="padding-top: 12px" >                                                                                           
                                                    <asp:Label ID="snacksreqdLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="needSnacks" Width="110" runat="server"  OnSelectedIndexChanged="DisplaySnacks" AutoPostBack="true" />
                                                </td>
                                                <td class="aptfont2" style="padding-top: 12px">                                                                                           
                                                    <asp:Label ID="snackLabel" runat="server" /><br />
                                                    <asp:DropDownList ID="Snacks" Width="200" runat="server" DataTextField="Players"
                                                        DataValueField="Usernum">
                                                    </asp:DropDownList>
                                                </td>
                                                <td>
                                                </td>
                                            </tr>
                                            <tr>
                                                <td colspan="4" align="right">
                                                    <asp:Button ID="insertButton" OnClick="AddItem" runat="server" />
                                                    &nbsp;
                                                    <asp:Button ID="updateButton" OnClick="EditItem" runat="server" />
                                                    &nbsp;
                                                    <asp:Button ID="canceladdButton" CausesValidation="False" OnClick="CancelAdd" runat="server" />
                                                    &nbsp;
                                                    <asp:Button ID="canceleditButton" OnClick="CancelEdit" runat="server" />
                                                </td>
                                            </tr>
                                        </table>
                                        </asp:Panel>
                                        <table>
                                        <tr>
                                            <td class="AdminTitle">
                                                <asp:Label ID="schedulegridLabel" runat="server" /></td>
                                        </tr>
                                        <tr>
                                            <td>
                                                <div style="width: 725; height: 300; overflow: auto" align="center">
                                                    <asp:GridView ID="EditGrid" runat="server" Width="700" CellPadding="3" 
                                                        DataKeyNames="gamenum" RowStyle-Font-Size="10pt" HeaderStyle-Font-Size="10pt"
                                                        HeaderStyle-ForeColor="white" HeaderStyle-BackColor="SteelBlue" AutoGenerateColumns="false"
                                                        OnSelectedIndexChanged="LoadItem" allowPaging="true" PageSize="30" OnRowDeleting="DeleteItem">
                                                        <Columns>
                                                            <asp:CommandField ItemStyle-Width="70" ShowSelectButton="true" ButtonType="Button"
                                                                ItemStyle-HorizontalAlign="Center" ControlStyle-Font-Size="9pt" ControlStyle-BackColor="steelblue"
                                                                ControlStyle-ForeColor="white" />
                                                            <asp:TemplateField ShowHeader="False" ItemStyle-Width="60"  ItemStyle-HorizontalAlign="Center">
                                                                <ItemTemplate>
                                                                    <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False"
                                                                        OnClientClick='return confirm("Are you sure you want to delete this entry?");'
                                                                        Text="Delete" Commandname="Delete" CommandArgument='<%# Eval("gamenum") %>'  />
                                                                </ItemTemplate>
                                                            </asp:TemplateField>
                                                            <asp:BoundField DataField="Gametype" ItemStyle-Font-Size="11px" ItemStyle-Width="75" ItemStyle-HorizontalAlign="Center" />
                                                            <asp:TemplateField ItemStyle-Font-Size="11px" ItemStyle-Width="150" ItemStyle-HorizontalAlign="Center" >
                                                                <ItemTemplate>
                                                                    <asp:Label ID="myDates" runat="server" Text='<%# MyTools.Makedate(Eval("Gamedates"),"shorttime") %>' />
                                                                </ItemTemplate>
                                                            </asp:TemplateField>
                                                            <asp:BoundField DataField="Gamelocation" ItemStyle-Font-Size="11px" ItemStyle-Width="100" ItemStyle-HorizontalAlign="Center" />
                                                            <asp:BoundField DataField="Teams" ItemStyle-Font-Size="11px" ItemStyle-Width="150" ItemStyle-HorizontalAlign="Center" />
                                                            <asp:BoundField DataField="Snackresp" ItemStyle-Font-Size="11px" ItemStyle-Width="100" ItemStyle-HorizontalAlign="Center" />                                                      
                                                            <asp:BoundField DataField="Refresp" ItemStyle-Font-Size="11px" ItemStyle-Width="100" ItemStyle-HorizontalAlign="Center" /> 
                                                        </Columns>
                                                    </asp:GridView>
                                                </div>
                                            </td>
                                        </tr>
                                    </table>
                                </asp:View> 
                            </asp:MultiView>
                        </td>
                    </tr>
                </table>
                </div>
            </td>
        </tr>
    </table>
</asp:Content>

Open in new window

0
Comment
Question by:pbissegger
2 Comments
 
LVL 18

Accepted Solution

by:
Rajar Ahmed earned 500 total points
Comment Utility
Try inside the not page.ispostback
If Not Page.IsPostBack Then

            MultiView1.ActiveViewIndex = 0

       ' Bind the datagrid        
        BindData()            
        End If

Open in new window

0
 

Author Comment

by:pbissegger
Comment Utility
Seems to have solved the issue ... although for the life of me, I do not understand why not updating the GridView solves the problem that the GridView is not updating...

Peter
0

Featured Post

Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

Join & Write a Comment

It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

762 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