troubleshooting Question

How can I find my input control?

Avatar of Michael Sterling
Michael SterlingFlag for United States of America asked on
23 Comments4 Solutions702 ViewsLast Modified:
I've got an input control that i'm trying to find in a ContentPlaceHolder and i'm having no luck. I'm including the markup and the code behind. Any help would be appreciated.
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="Server">
    <asp:HiddenField runat="server" ID="hfAccessLevel" Value='<%# Eval("Page.AccessLevel") %>' />
    <div class="studentIdSearch">
        <div class="srchContainer">
                    <asp:Label runat="server" ID="lblPrompt" Text="To sign in or out, enter (or swipe) student id here:"
                    <input id="txtStudentIdSearchBox" type="text" class="studentIdInput" />
                    <asp:Panel ID="pnlButton" runat="server">
                        <asp:Button ID="lnkbtnFindStudent" runat="server" Text="Find Student" CssClass="btnSearch" OnClick="lnkbtnFindStudent_Click" >



    protected void lnkbtnFindStudent_Click(object sender, EventArgs e)
        ContentPlaceHolder cph = new ContentPlaceHolder();
        TextBox txb = new TextBox();
        StudentSignInSignOutRec ssisor = new StudentSignInSignOutRec();        

        string studentID;

        cph = (ContentPlaceHolder)FindControl("MainContent");

        if (cph != null)
            txb = (TextBox)cph.FindControl("txtStudentIdSearchBox");

        if (txb != null)
            studentID = txb.Text.Trim();
            ssisor = Utility.DoesStudentExist(studentID);
            if (ssisor != null)
            //else show message student does not exist
Pratima Pharande

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 4 Answers and 23 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 4 Answers and 23 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros