Tab container problem

I am having a problem with my tab panel/tab container. Whenever I make a change or click in a tab it refreshes and takes me to the tab called pictures upload/modify. I want to be able to make changes in a tab and stay in that tab not switch tabs. I'm not sure what is causing this any ideas?

Here is the code:

<%@dotnet.itags.org. Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<%@dotnet.itags.org. Page Language="VB" MasterPageFile="~/masterpage.master" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString1 %>"
DeleteCommand="DELETE FROM [Scrollbar] WHERE [EventID] = @dotnet.itags.org.EventID" InsertCommand="INSERT INTO [Scrollbar] ([Event]) VALUES (@dotnet.itags.org.Event)"
SelectCommand="SELECT * FROM [Scrollbar]" UpdateCommand="UPDATE [Scrollbar] SET [Event] = @dotnet.itags.org.Event WHERE [EventID] = @dotnet.itags.org.EventID">
<DeleteParameters>
<asp:Parameter Name="EventID" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="Event" Type="String" />
<asp:Parameter Name="EventID" Type="Int32" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="Event" Type="String" />
</InsertParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource3" runat="server" ConflictDetection="CompareAllValues"
ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString1 %>" DeleteCommand="DELETE FROM [Picture] WHERE [Picture_ID] = @dotnet.itags.org.original_Picture_ID AND [Picture_Name] = @dotnet.itags.org.original_Picture_Name AND [Picture_Description] = @dotnet.itags.org.original_Picture_Description AND [Picture_Date] = @dotnet.itags.org.original_Picture_Date AND [Picture_User] = @dotnet.itags.org.original_Picture_User AND [Picture_Path] = @dotnet.itags.org.original_Picture_Path"
InsertCommand="INSERT INTO [Picture] ([Picture_Name], [Picture_Description], [Picture_Date], [Picture_User], [Picture_Path]) VALUES (@dotnet.itags.org.Picture_Name, @dotnet.itags.org.Picture_Description, @dotnet.itags.org.Picture_Date, @dotnet.itags.org.Picture_User, @dotnet.itags.org.Picture_Path)"
OldValuesParameterFormatString="original_{0}" SelectCommand="SELECT * FROM [Picture]"
UpdateCommand="UPDATE [Picture] SET [Picture_Name] = @dotnet.itags.org.Picture_Name, [Picture_Description] = @dotnet.itags.org.Picture_Description, [Picture_Date] = @dotnet.itags.org.Picture_Date, [Picture_User] = @dotnet.itags.org.Picture_User, [Picture_Path] = @dotnet.itags.org.Picture_Path WHERE [Picture_ID] = @dotnet.itags.org.original_Picture_ID AND [Picture_Name] = @dotnet.itags.org.original_Picture_Name AND [Picture_Description] = @dotnet.itags.org.original_Picture_Description AND [Picture_Date] = @dotnet.itags.org.original_Picture_Date AND [Picture_User] = @dotnet.itags.org.original_Picture_User AND [Picture_Path] = @dotnet.itags.org.original_Picture_Path">
<DeleteParameters>
<asp:Parameter Name="original_Picture_ID" Type="Int32" />
<asp:Parameter Name="original_Picture_Name" Type="String" />
<asp:Parameter Name="original_Picture_Description" Type="String" />
<asp:Parameter Name="original_Picture_Date" Type="DateTime" />
<asp:Parameter Name="original_Picture_User" Type="String" />
<asp:Parameter Name="original_Picture_Path" Type="String" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
<asp:Parameter Name="original_Picture_ID" Type="Int32" />
<asp:Parameter Name="original_Picture_Name" Type="String" />
<asp:Parameter Name="original_Picture_Description" Type="String" />
<asp:Parameter Name="original_Picture_Date" Type="DateTime" />
<asp:Parameter Name="original_Picture_User" Type="String" />
<asp:Parameter Name="original_Picture_Path" Type="String" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
</InsertParameters>
</asp:SqlDataSource>

<cc1:TabContainer ID="TabContainer1" runat="server" width="875px" style="z-index: 133; left: 20px; position: absolute; top: 300px" BackColor="Transparent">
<cc1:TabPanel ID="TabPanel1" runat="server" HeaderText="Events Data">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="EventID"
DataSourceID="SqlDataSource2" EmptyDataText="There are no data records to display.">
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
<asp:BoundField DataField="EventID" HeaderText="EventID" ReadOnly="True" SortExpression="EventID" />
<asp:BoundField DataField="EventName" HeaderText="EventName" SortExpression="EventName" />
<asp:BoundField DataField="EventDate" HeaderText="EventDate" SortExpression="EventDate"/>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource8" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString5 %>"
DeleteCommand="DELETE FROM [Events] WHERE [EventID] = @dotnet.itags.org.EventID" InsertCommand="INSERT INTO [Events] ([EventName], [EventDate]) VALUES (@dotnet.itags.org.EventName, @dotnet.itags.org.EventDate)"
ProviderName="<%$ ConnectionStrings:CORE2062ConnectionString5.ProviderName %>"
SelectCommand="SELECT [EventID], [EventName], [EventDate] FROM [Events]" UpdateCommand="UPDATE [Events] SET [EventName] = @dotnet.itags.org.EventName, [EventDate] = @dotnet.itags.org.EventDate WHERE [EventID] = @dotnet.itags.org.EventID">
<InsertParameters>
<asp:Parameter Name="EventName" Type="String" />
<asp:Parameter Name="EventDate" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="EventName" Type="String" />
<asp:Parameter Name="EventDate" Type="String" />
<asp:Parameter Name="EventID" Type="Int32" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="EventID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="EventID"
DataSourceID="SqlDataSource2" DefaultMode="Insert" Height="50px" Width="125px">
<Fields>
<asp:BoundField DataField="EventID" HeaderText="EventID" InsertVisible="False" ReadOnly="True"
SortExpression="EventID" />
<asp:BoundField DataField="EventName" HeaderText="EventName" SortExpression="EventName" />
<asp:BoundField DataField="EventDate" HeaderText="EventDate" SortExpression="EventDate" />
<asp:CommandField ShowInsertButton="True" />
</Fields>
</asp:DetailsView>
<br />
<asp:SqlDataSource ID="SqlDataSource6" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString4 %>"
DeleteCommand="DELETE FROM [Scrollbar] WHERE [EventID] = @dotnet.itags.org.EventID" InsertCommand="INSERT INTO [Scrollbar] ([Event]) VALUES (@dotnet.itags.org.Event)"
ProviderName="<%$ ConnectionStrings:CORE2062ConnectionString4.ProviderName %>"
SelectCommand="SELECT [EventID], [Event] FROM [Scrollbar]" UpdateCommand="UPDATE [Scrollbar] SET [Event] = @dotnet.itags.org.Event WHERE [EventID] = @dotnet.itags.org.EventID">
<InsertParameters>
<asp:Parameter Name="Event" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Event" Type="String" />
<asp:Parameter Name="EventID" Type="Int32" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="EventID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource7" runat="server" ConflictDetection="CompareAllValues" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString4 %>" DeleteCommand="DELETE FROM [Scrollbar] WHERE [EventID] = @dotnet.itags.org.original_EventID AND [Event] = @dotnet.itags.org.original_Event" InsertCommand="INSERT INTO [Scrollbar] ([Event]) VALUES (@dotnet.itags.org.Event)" OldValuesParameterFormatString="original_{0}" SelectCommand="SELECT * FROM [Scrollbar]" UpdateCommand="UPDATE [Scrollbar] SET [Event] = @dotnet.itags.org.Event WHERE [EventID] = @dotnet.itags.org.original_EventID AND [Event] = @dotnet.itags.org.original_Event">
<DeleteParameters>
<asp:Parameter Name="original_EventID" Type="Int32" />
<asp:Parameter Name="original_Event" Type="String" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="Event" Type="String" />
<asp:Parameter Name="original_EventID" Type="Int32" />
<asp:Parameter Name="original_Event" Type="String" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="Event" Type="String" />
</InsertParameters>
</asp:SqlDataSource>
<br />
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="EventID"
DataSourceID="SqlDataSource7">
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
<asp:BoundField DataField="EventID" HeaderText="EventID" InsertVisible="False" ReadOnly="True"
SortExpression="EventID" />
<asp:BoundField DataField="Event" HeaderText="Event" SortExpression="Event" />
</Columns>
</asp:GridView>

</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel ID="TabPanel2" runat="server" HeaderText="Users">
<ContentTemplate>
<asp:CreateUserWizard ID="CreateUserWizard1" runat="server">
<WizardSteps>
<asp:CreateUserWizardStep ID="CreateUserWizardStep1" runat="server">
</asp:CreateUserWizardStep>
<asp:CompleteWizardStep ID="CompleteWizardStep1" runat="server">
</asp:CompleteWizardStep>
</WizardSteps>
</asp:CreateUserWizard>
</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel ID="TabPanel3" runat="server" HeaderText="Pictures Upload/Modify">
<ContentTemplate>
<asp:FileUpload ID="FileUpload1" runat="server" />
<br /><asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Upload" />
<asp:Label ID="Label1" runat="server" Text="Please browse for a picture and then complete the following form."></asp:Label>
<asp:Label ID="Label2" runat="server" style="z-index: 100; left: 338px; position: absolute; top: 372px"></asp:Label>

<asp:DetailsView ID="DetailsView2" runat="server" AutoGenerateRows="False" DataKeyNames="Picture_ID"
DataSourceID="SqlDataSource3" DefaultMode="Insert" Height="50px" Width="125px">
<Fields>
<asp:BoundField DataField="Picture_ID" HeaderText="ID" InsertVisible="False"
ReadOnly="True" SortExpression="Picture_ID" />
<asp:BoundField DataField="Picture_Name" HeaderText="Name" SortExpression="Picture_Name" />
<asp:BoundField DataField="Picture_Description" HeaderText="Picture Description(optional)"
SortExpression="Picture_Description" />
<asp:BoundField DataField="Picture_Date" HeaderText="Date" SortExpression="Picture_Date(optional)" />
<asp:BoundField DataField="Picture_User" HeaderText="User" SortExpression="Picture_User" />
<asp:BoundField DataField="Picture_Path" HeaderText="Path" SortExpression="Picture_Path" NullDisplayText="FileUpload1.PostedFile.FileName"/>
<asp:CommandField ShowInsertButton="True"/>
</Fields>
</asp:DetailsView>

<asp:GridView ID="GridView3" runat="server" AutoGenerateColumns="False" DataKeyNames="Picture_ID"
DataSourceID="SqlDataSource5" EmptyDataText="There are no data records to display.">
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
<asp:BoundField DataField="Picture_ID" HeaderText="Picture_ID" ReadOnly="True" SortExpression="Picture_ID" />
<asp:BoundField DataField="Picture_Name" HeaderText="Picture_Name" SortExpression="Picture_Name" />
<asp:BoundField DataField="Picture_Description" HeaderText="Picture_Description"
SortExpression="Picture_Description" />
<asp:BoundField DataField="Picture_Date" HeaderText="Picture_Date" SortExpression="Picture_Date" />
<asp:BoundField DataField="Picture_User" HeaderText="Picture_User" SortExpression="Picture_User" />
<asp:BoundField DataField="Picture_Path" HeaderText="Picture_Path" SortExpression="Picture_Path" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource5" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString3 %>"
DeleteCommand="DELETE FROM [Picture] WHERE [Picture_ID] = @dotnet.itags.org.Picture_ID" InsertCommand="INSERT INTO [Picture] ([Picture_Name], [Picture_Description], [Picture_Date], [Picture_User], [Picture_Path]) VALUES (@dotnet.itags.org.Picture_Name, @dotnet.itags.org.Picture_Description, @dotnet.itags.org.Picture_Date, @dotnet.itags.org.Picture_User, @dotnet.itags.org.Picture_Path)"
ProviderName="<%$ ConnectionStrings:CORE2062ConnectionString3.ProviderName %>"
SelectCommand="SELECT [Picture_ID], [Picture_Name], [Picture_Description], [Picture_Date], [Picture_User], [Picture_Path] FROM [Picture]"
UpdateCommand="UPDATE [Picture] SET [Picture_Name] = @dotnet.itags.org.Picture_Name, [Picture_Description] = @dotnet.itags.org.Picture_Description, [Picture_Date] = @dotnet.itags.org.Picture_Date, [Picture_User] = @dotnet.itags.org.Picture_User, [Picture_Path] = @dotnet.itags.org.Picture_Path WHERE [Picture_ID] = @dotnet.itags.org.Picture_ID">
<InsertParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
<asp:Parameter Name="Picture_ID" Type="Int32" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="Picture_ID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource4" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString1 %>"
DeleteCommand="DELETE FROM [Picture] WHERE [Picture_ID] = @dotnet.itags.org.Picture_ID" InsertCommand="INSERT INTO [Picture] ([Picture_Name], [Picture_Description], [Picture_Date], [Picture_User], [Picture_Path]) VALUES (@dotnet.itags.org.Picture_Name, @dotnet.itags.org.Picture_Description, @dotnet.itags.org.Picture_Date, @dotnet.itags.org.Picture_User, @dotnet.itags.org.Picture_Path)"
ProviderName="<%$ ConnectionStrings:CORE2062ConnectionString1.ProviderName %>"
SelectCommand="SELECT [Picture_ID], [Picture_Name], [Picture_Description], [Picture_Date], [Picture_User], [Picture_Path] FROM [Picture]"
UpdateCommand="UPDATE [Picture] SET [Picture_Name] = @dotnet.itags.org.Picture_Name, [Picture_Description] = @dotnet.itags.org.Picture_Description, [Picture_Date] = @dotnet.itags.org.Picture_Date, [Picture_User] = @dotnet.itags.org.Picture_User, [Picture_Path] = @dotnet.itags.org.Picture_Path WHERE [Picture_ID] = @dotnet.itags.org.Picture_ID">
<InsertParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Picture_Name" Type="String" />
<asp:Parameter Name="Picture_Description" Type="String" />
<asp:Parameter Name="Picture_Date" Type="DateTime" />
<asp:Parameter Name="Picture_User" Type="String" />
<asp:Parameter Name="Picture_Path" Type="String" />
<asp:Parameter Name="Picture_ID" Type="Int32" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="Picture_ID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
</ContentTemplate>
</cc1:TabPanel>
<cc1:TabPanel ID="TabPanel4" runat="server" HeaderText="Meeting Notes">
<ContentTemplate>

<asp:GridView ID="GridView4" runat="server" AutoGenerateColumns="False" DataKeyNames="Meeting_ID"
DataSourceID="SqlDataSource9" EmptyDataText="There are no data records to display." AllowSorting="True">
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
<asp:BoundField DataField="Meeting_ID" HeaderText="Meeting_ID" ReadOnly="True" SortExpression="Meeting_ID" />
<asp:BoundField DataField="Meeting_Date" HeaderText="Meeting_Date" SortExpression="Meeting_Date" />
<asp:BoundField DataField="Meeting_Title" HeaderText="Meeting_Title" SortExpression="Meeting_Title" />
<asp:BoundField DataField="Meeting_Description" HeaderText="Meeting_Description"
SortExpression="Meeting_Description" />
<asp:BoundField DataField="Meeting_Topic1" HeaderText="Meeting_Topic1" SortExpression="Meeting_Topic1" />
<asp:BoundField DataField="Meeting_Notes1" HeaderText="Meeting_Notes1" SortExpression="Meeting_Notes1" />
<asp:BoundField DataField="Meeting_Topic2" HeaderText="Meeting_Topic2" SortExpression="Meeting_Topic2" />
<asp:BoundField DataField="Meeting_Notes2" HeaderText="Meeting_Notes2" SortExpression="Meeting_Notes2" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource9" runat="server" ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString1 %>"
DeleteCommand="DELETE FROM [Meeting] WHERE [Meeting_ID] = @dotnet.itags.org.Meeting_ID" InsertCommand="INSERT INTO [Meeting] ([Meeting_Date], [Meeting_Title], [Meeting_Description], [Meeting_Topic1], [Meeting_Notes1], [Meeting_Topic2], [Meeting_Notes2]) VALUES (@dotnet.itags.org.Meeting_Date, @dotnet.itags.org.Meeting_Title, @dotnet.itags.org.Meeting_Description, @dotnet.itags.org.Meeting_Topic1, @dotnet.itags.org.Meeting_Notes1, @dotnet.itags.org.Meeting_Topic2, @dotnet.itags.org.Meeting_Notes2)"
ProviderName="<%$ ConnectionStrings:CORE2062ConnectionString1.ProviderName %>"
SelectCommand="SELECT [Meeting_ID], [Meeting_Date], [Meeting_Title], [Meeting_Description], [Meeting_Topic1], [Meeting_Notes1], [Meeting_Topic2], [Meeting_Notes2] FROM [Meeting]"
UpdateCommand="UPDATE [Meeting] SET [Meeting_Date] = @dotnet.itags.org.Meeting_Date, [Meeting_Title] = @dotnet.itags.org.Meeting_Title, [Meeting_Description] = @dotnet.itags.org.Meeting_Description, [Meeting_Topic1] = @dotnet.itags.org.Meeting_Topic1, [Meeting_Notes1] = @dotnet.itags.org.Meeting_Notes1, [Meeting_Topic2] = @dotnet.itags.org.Meeting_Topic2, [Meeting_Notes2] = @dotnet.itags.org.Meeting_Notes2 WHERE [Meeting_ID] = @dotnet.itags.org.Meeting_ID">
<InsertParameters>
<asp:Parameter Name="Meeting_Date" Type="DateTime" />
<asp:Parameter Name="Meeting_Title" Type="String" />
<asp:Parameter Name="Meeting_Description" Type="String" />
<asp:Parameter Name="Meeting_Topic1" Type="String" />
<asp:Parameter Name="Meeting_Notes1" Type="String" />
<asp:Parameter Name="Meeting_Topic2" Type="String" />
<asp:Parameter Name="Meeting_Notes2" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Meeting_Date" Type="DateTime" />
<asp:Parameter Name="Meeting_Title" Type="String" />
<asp:Parameter Name="Meeting_Description" Type="String" />
<asp:Parameter Name="Meeting_Topic1" Type="String" />
<asp:Parameter Name="Meeting_Notes1" Type="String" />
<asp:Parameter Name="Meeting_Topic2" Type="String" />
<asp:Parameter Name="Meeting_Notes2" Type="String" />
<asp:Parameter Name="Meeting_ID" Type="Int32" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="Meeting_ID" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
</ContentTemplate>
</cc1:TabPanel>
</cc1:TabContainer>
<script language="vbscript" runat="server">
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim filename = "upload/" & FileUpload1.PostedFile.FileName
If FileUpload1.HasFile Then
Try
FileUpload1.SaveAs(Server.MapPath("~/upload/") & _
FileUpload1.FileName)
Label1.Text = "File name: " & "upload/" & _
FileUpload1.PostedFile.FileName & "<br>" & _
"File Size: " & _
FileUpload1.PostedFile.ContentLength & " kb<br>" & _
"Content type: " & _
FileUpload1.PostedFile.ContentType
Catch ex As Exception
Label1.Text = "ERROR: " & ex.Message.ToString()
Label2.Text = filename
End Try
Else
Label1.Text = "You have not specified a file."
End If
End Sub
</script>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConflictDetection="CompareAllValues"
ConnectionString="<%$ ConnectionStrings:CORE2062ConnectionString1 %>" DeleteCommand="DELETE FROM [Events] WHERE [EventID] = @dotnet.itags.org.original_EventID AND [EventName] = @dotnet.itags.org.original_EventName AND [EventDate] = @dotnet.itags.org.original_EventDate"
InsertCommand="INSERT INTO [Events] ([EventName], [EventDate]) VALUES (@dotnet.itags.org.EventName, @dotnet.itags.org.EventDate)"
OldValuesParameterFormatString="original_{0}" SelectCommand="SELECT * FROM [Events]"
UpdateCommand="UPDATE [Events] SET [EventName] = @dotnet.itags.org.EventName, [EventDate] = @dotnet.itags.org.EventDate WHERE [EventID] = @dotnet.itags.org.original_EventID AND [EventName] = @dotnet.itags.org.original_EventName AND [EventDate] = @dotnet.itags.org.original_EventDate">
<DeleteParameters>
<asp:Parameter Name="original_EventID" Type="Int32" />
<asp:Parameter Name="original_EventName" Type="String" />
<asp:Parameter Name="original_EventDate" Type="DateTime" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="EventName" Type="String" />
<asp:Parameter Name="EventDate" Type="DateTime" />
<asp:Parameter Name="original_EventID" Type="Int32" />
<asp:Parameter Name="original_EventName" Type="String" />
<asp:Parameter Name="original_EventDate" Type="DateTime" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="EventName" Type="String" />
<asp:Parameter Name="EventDate" Type="DateTime" />
</InsertParameters>
</asp:SqlDataSource>
</asp:Content

Hi,

According to my understanding to your problem, it's ActiveTabIndex isn't maintained between postback.

You can refer to this thread talks about the same thing and try the workaround in it.

http://forums.asp.net/t/1157255.aspx