Hello I am getting http exception in of the method of class file searchaspxvb like The Controls collection cannot be modified because the control contains code blocks ie lt gt I have googled a lot including in this site and Mudassar Khanrsquos article in asp snippets I have tried placing Java script function in the body of Master page from header whereas I just removed the Java script tag and its contents in searchaspx as of its not required now Still ge

The Controls collection cannot be modified because the control contains code blocks (i.e. ... )

alibasha

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User: alibasha
Posted: on Apr 15, 2016 10:35 AM
Forum: ASP.Net AJAX
Answer: 1
Views: 7253

Hello,

I am getting http exception in of the method of class file (search.aspx.vb) like "The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)", I have googled a lot including in this site and Mudassar Khan’s article in asp snippets. I have tried placing Java script function in the body of Master page from header, whereas I just removed the Java script tag and its contents in search.aspx( as of its not required now). Still getting exception. I also know that if we have something like this <%= in Java script function we need to replace with <%#. But I don’t have this kind of code in any function. Please help.

Andrea

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User: Andrea
Replied: on Apr 15, 2016 10:35 AM
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Hi @alibasha, Please try the following The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>) It might help you. Cheers Andrea.

alibasha

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User: alibasha
Replied: on Apr 18, 2016 03:49 AM
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Hello Andrea,

Thanks for the reply. I have already added the Java Script function in the body from the header section. I mentioned the same in my question as well, it didn't work. Any other solution would be highly appreciated. Thanks.

dharmend...

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ANSWER
User: dharmendr
Replied: on Apr 18, 2016 05:42 AM
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Hi alibasha,

Move the JavaScript code to the bottom of the page, typically above the close form tag. The error is because the control is not yet rendered, while the Javascript code is executed.

<body>
    <asp:TextBox runat="server" ID="TextBox1" />
    <script type="text/javascript">
        function GetValue() {
            var txt = document.getElementById("<%=TextBox1.ClientID%>");
            alert(txt.value);
        }
    </script>
    </form>
</body>

Else refer the below link.

http://stackoverflow.com/questions/4995274/the-controls-collection-cannot-be-modified-because-the-control-contains-code-blo

The Controls collection cannot be modified because the control contains code blocks (i.e. ... )

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