Where did the RadComboBox ClientState data go?

2 posts, 0 answers
  1. SSirica
    SSirica avatar
    50 posts
    Member since:
    Jan 2007

    Posted 26 Mar 2015 Link to this post

    Apparently at some point in time, when you wanted to get the selected row data from a RadComboBox  from a calling form you look to the Request.Form item with the _ClientState in it's key.  For example If I had this on Form1:
    <telerik:RadComboBox ID="cbTabDup" runat="server" Height="100px" Width="100px" Skin="Default"
        AutoPostBack="true" DropDownWidth="300px" HighlightTemplatedItems="True" MarkFirstMatch="true"
            <table cellpadding="1" cellspacing="0" class="Main" width="250px">
                    <td width="100px">
                        <%#DataBinder.Eval(Container.DataItem, "Code")%>
                    <td nowrap>
                        <%#DataBinder.Eval(Container.DataItem, "Description")%>
                    <td style="display: none;">
                        <%# DataBinder.Eval(Container.DataItem, "ID") %>
            <table cellpadding="1" cellspacing="0" class="Main" width="250px">
                    <td class="ComboHeader" width="100px">
                    <td class="ComboHeader">
    and submitted it to Form2 using:
                Response.Redirect("Form2.aspx", True)

    In Form2 I could do something like this and get the values:
    For Each key In Request.Form.AllKeys
        If InStr(key, "cbTabDup_ClientState") > 0 Then
            Dim clsRad As New clsRadComboRequest
            clsRad.RadClientState = Request(key).ToString
            sDupText = clsRad.RadText
            sDupDescText = clsRad.RadDesc
            iDupInd = clsRad.RadValue
            Exit For
        End If

    Except for some unknown reason now, the Request array key containing the "cbTabDup_ClientState" is EMPTY?  Where'd it go?

  2. Hristo Valyavicharski
    Hristo Valyavicharski avatar
    975 posts

    Posted 31 Mar 2015 Link to this post


    What is you use PostBackUrl instead Response.Redirect:

            <asp:Button ID="Button1" runat="server" Text="Button" Height="27px" PostBackUrl="~/Default2.aspx" OnClick="Button1_Click" />
    Can you access the previous page from the second form:

        protected void Page_Load(object sender, EventArgs e)
            if (Page.PreviousPage != null)

    Look at the Cross-Page Posting in ASP.NET Web Forms MSDN article

    Hristo Valyavicharski

    See What's Next in App Development. Register for TelerikNEXT.

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