The declaration for "Control" is not present, possibly being restricted by its protection level

Question

The declaration for "Control" is not present, possibly being restricted by its protection level

I'm really struggling to get the jQuery datepicker working in ASP.NET. I've tried various examples, but nothing seems to work for me. Even though I'm fairly new to ASP.NET, I am learning quickly!

Here is the script I am trying to use:

 <script>
          $(document).ready(function () {
              $(function () {
                  $("#" + '<%=txtDOB.ClientID%>').datepicker();
            });
        });
  </script>

The control on my aspx page looks like this:

<asp:TextBox ID="txtDOB" CssClass="form-control" runat="server"></asp:TextBox>

However, as soon as I close the server tag %>, a red line appears underneath the txtDOB control with an error message:

txtDOB is not declared. It may be inaccessible due to its protection level.

I have already made sure that the class is public in the code behind and tried moving the script to the bottom of the page. Interestingly, if I change the asp textbox to an HTML input, it works perfectly fine.

javascript asp.net jquery-ui-datepicker

Answer 1

Answer №1

Using an ASP.NET TextBox should work without any issues, just like you did. The problem might lie in the location of your control. For instance, if it's placed within a Repeater or Grid, you won't be able to access its ID directly because the framework generates unique IDs for each row at runtime.

To test this, try creating a simple webform with only the TextBox on the page, and you'll see that it functions perfectly as intended.

Answer 2

Using an ASP.NET TextBox should work without any issues, just like you did. The problem might lie in the location of your control. For instance, if it's placed within a Repeater or Grid, you won't be able to access its ID directly because the framework generates unique IDs for each row at runtime.

To test this, try creating a simple webform with only the TextBox on the page, and you'll see that it functions perfectly as intended.

Answer 3

Answer №2

Consider utilizing static ID mode for a smoother client script experience:

<script>
          $(document).ready(function () {
                  $("#txtDOB").datepicker();
        });
</script>

It simplifies the client script execution (especially when transitioning to an external .js file for caching benefits), and can be easily implemented with the ASP control:

<asp:TextBox ID="txtDOB" CssClass="form-control" runat="server" ClientIDMode="Static"/>

Answer 4

Consider utilizing static ID mode for a smoother client script experience:

<script>
          $(document).ready(function () {
                  $("#txtDOB").datepicker();
        });
</script>

It simplifies the client script execution (especially when transitioning to an external .js file for caching benefits), and can be easily implemented with the ASP control:

<asp:TextBox ID="txtDOB" CssClass="form-control" runat="server" ClientIDMode="Static"/>

Answer 5

Answer №3

If you want to target a specific ID using jQuery, you can try a different selector method like this:

<script>
    $(document).ready(function () {
        $("input[id$=_txtDOB]").datepicker();
    });
</script>

This selector will take into consideration the additional text added to your ID by the CreateUserWizard control. It's a more efficient way to achieve this without needing to modify your original HTML code.

<asp:TextBox ID="txtDOB" CssClass="form-control" runat="server"></asp:TextBox>

Answer 6

If you want to target a specific ID using jQuery, you can try a different selector method like this:

<script>
    $(document).ready(function () {
        $("input[id$=_txtDOB]").datepicker();
    });
</script>

This selector will take into consideration the additional text added to your ID by the CreateUserWizard control. It's a more efficient way to achieve this without needing to modify your original HTML code.

<asp:TextBox ID="txtDOB" CssClass="form-control" runat="server"></asp:TextBox>

The declaration for "Control" is not present, possibly being restricted by its protection level

Answer №1

Answer №2

Answer №3

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