Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Troubleshooting
Research
Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

webusercontrol - Unable to set value of the property 'value': object is null or undefined

Avatar of johnkainn
johnkainn asked on
JavaScript
4 Comments1 Solution765 ViewsLast Modified:
Hello,
If I have this in web user control (.ascx) I get an error but when it is in aspx page then there is no error. Do you know why that is?
 <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
        <script type="text/javascript">
            function buildArgument(sender, args) {
                var t = "K";
                document.getElementById("argument").value = t;
            }
        </script>
    </telerik:RadScriptBlock>
          <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
    <asp:HiddenField ID="argument" runat="server" />
    <asp:Button ID="SelectButton" runat="server" Text="Select" Width="100px" OnClick="SelectButton_Click"
                OnClientClick="buildArgument(this, event);" />


Microsoft JScript runtime error: Unable to set value of the property 'value': object is null or undefined
In the debugger this gets highlighted:
document.getElementById("argument").value = t;
ASKER CERTIFIED SOLUTION
Avatar of COBOLdinosaur
Commented:
This problem has been solved!
Unlock 1 Answer and 4 Comments.
See Answers