Stop ASP:label from repeating

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On my pages I am using a <asp:label> to populate the page title. It works good, but when in my grid view a user clicks First - Previous - Next - Last, the label keeps adding the page title over and over

LABEL
<asp:Label ID="Label2" runat="server" Text="Question's Related To " CssClass="lblTitle"></asp:Label>

On page load as an example shows: Question's Related To All Questions

When paging direction is clicked:
First click returns: Question's Related To All Questions All Questions
Second click returns: Question's Related To All Questions All Questions All Questions

Each time it is clicked this happens. When the page is refreshed it stays the same. Only way to reset to the text the should display (Question's Related To All Questions) is to click the link that loads the page.

I was thinking that this might deal with using IsPostBack, but that is not working either.

What I have tried:

mainForum.aspx.vb

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Request.QueryString("cat") <> Nothing Then
            ForumDataSource.FilterExpression = "Category='" & Request.QueryString("cat") & "'"

            Label2.Text &= " " & Request.QueryString("cat")
        Else
            Label2.Text &= " All Questions"

        End If

        If Not IsPostBack Then
            ' Validate initially to force the asterisks
            ' to appear before the first roundtrip.
            Validate()
        End If

    End Sub

mainForum.aspx

<asp:GridView ID="GridView1" runat="server" BorderWidth="0" Width="100%" AllowPaging="True" AllowSorting="True" PageIndex="4" PageSize="30" AutoGenerateColumns="False" DataKeyNames="QID" DataSourceID="ForumDataSource" EnableModelValidation="True">
      <RowStyle BackColor="#dde8ed" />
      <AlternatingRowStyle BackColor="#beced5" />
      <PagerSettings PageButtonCount="4" Mode="NextPreviousFirstLast" Position="TopAndBottom" FirstPageText="First " PreviousPageText=" Previous " NextPageText=" Next " LastPageText=" End"  />
      <PagerStyle HorizontalAlign="Center" VerticalAlign="Middle" BackColor="#233f5e" Font-Underline="false" ForeColor="#c7d1e0" Font-Names="Arial" Font-Size="9pt" Font-Bold="true" Width="100%" Height="22px" />
        <EmptyDataTemplate>
            Now Questions were found
        </EmptyDataTemplate>
      <FooterStyle CssClass="gridbg" />
      

        <Columns>
            <asp:HyperLinkField DataNavigateUrlFields="Category" DataNavigateUrlFormatString="mainForum.aspx?cat={0}" DataTextField="Category" HeaderText="Category" NavigateUrl="mainForum.aspx?cat=" SortExpression="Category" Text="Category" >
            <HeaderStyle BackColor="#5B6776" Font-Names="Arial" Font-Size="9pt" ForeColor="#C7DEE9" HorizontalAlign="Center" VerticalAlign="Middle" Width="17%" />
            <ItemStyle Font-Names="Arial" Font-Size="8pt" ForeColor="#022638" HorizontalAlign="Left" VerticalAlign="Middle" Width="17%" Height="20px" CssClass="ingrid" />
            </asp:HyperLinkField>
            <asp:HyperLinkField DataNavigateUrlFields="QID" DataNavigateUrlFormatString="AnswerList.aspx?qid={0}" DataTextField="Question" HeaderText="Question(s) Asked" NavigateUrl="AnswerList.aspx?qid=" SortExpression="Question" Text="Question" >
            <HeaderStyle BackColor="#5B6776" Font-Names="Arial" Font-Size="9pt" ForeColor="#C7DEE9" HorizontalAlign="Center" VerticalAlign="Middle" Width="56%" />
              <ItemStyle Font-Names="Arial" Font-Size="8pt" ForeColor="#022638" HorizontalAlign="Left" VerticalAlign="Middle" Width="56%" Height="20px" CssClass="ingrid" />
            </asp:HyperLinkField>
            <asp:HyperLinkField DataNavigateUrlFields="PostedBy" DataNavigateUrlFormatString="Profile.aspx?mem={0}" DataTextField="PostedBy" HeaderText="Posted By" NavigateUrl="Profile.aspx?mem=" SortExpression="PostedBy">
            <HeaderStyle BackColor="#5B6776" Font-Names="Arial" Font-Size="9pt" ForeColor="#C7DEE9" HorizontalAlign="Center" VerticalAlign="Middle" Width="17%" />
              <ItemStyle Font-Names="Arial" Font-Size="8pt" ForeColor="#022638" HorizontalAlign="Left" VerticalAlign="Middle" Width="15%" Height="20px" CssClass="ingrid" />
            </asp:HyperLinkField>
            <asp:BoundField DataField="PostedDate" HeaderText="Post Date" DataFormatString="{0}" SortExpression="PostedDate" >
              <HeaderStyle BackColor="#5B6776" Font-Names="Arial" Font-Size="9pt" ForeColor="#C7DEE9" HorizontalAlign="Center" VerticalAlign="Middle" Width="12%" />
              <ItemStyle Font-Names="Arial" Font-Size="8pt" ForeColor="#022638" HorizontalAlign="Center" VerticalAlign="Middle" Width="12%" Height="20px" />
            </asp:BoundField>
        </Columns>
    </asp:GridView>

Posted 5-Sep-17 13:37pm

Edward Mergel

Updated 5-Sep-17 18:11pm

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2 solutions

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DotNetSteve · Accepted Answer · 2017-09-05T15:17:00

You are on the right track about IsPostBack.
You need to assign your label in that block, then it will only get called on a Get request (link you mention)

VB

If Not IsPostBack Then

	' Validate initially to force the asterisks
	' to appear before the first roundtrip.

	Label2.Text &= " " & Request.QueryString("cat")
	' OR
	Label2.Text &= " All Questions"

	Validate()

End If

Graeme_Grant · Accepted Answer · 2017-09-05T18:11:00

Solution 2

Change this:

VB

Label2.Text &= " All Questions"

To this:

VB

If Not String.IsNullOrEmpty(Label2.Text) And Label2.Text <> "All Questions" Then 
    Label2.Text &= " All Questions"
Else
    Label2.Text = "All Questions"
End If

Posted 5-Sep-17 18:11pm

Graeme_Grant

Updated 5-Sep-17 18:12pm

v2

Comments

Edward Mergel 6-Sep-17 8:11am

Thank you works great now