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  • yumin 51 posts 243 karma points
    May 08, 2013 @ 11:34
    yumin
    0

    UserControl FindControl from masterpage get a NullReferenceException

    API Questions

    my masterpage have some server control like this:

    <form id="form1" runat="server">
     <umbraco:Macro Alias="aaa" runat="server"></umbraco:Macro>
        
    <asp:HiddenField runat="server" ID="hidtest" Value="why i can not findcontrol" />
    
    </form>

    Macro aaa call .NET User Control,in usercontrol the code like this:

     string val= ((HiddenField)this.Page.Master.FindControl("hidtest")).Value;

    but run will get a NullReferenceException,why i can not get a value from masterpage?

    thanks in advance

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