在主文件的代码隐藏中找不到ASP控件

Question

This is driving me crazy, because I thought I had the runat=server stuff totally figured out.

I have an asp:Literal control in my markup (it's in a masterpage, but that doesn't matter, right?)

In MyMaster.Master :

<asp:Literal ID="myLiteral" runat="server" Text="Some Text"></asp:Literal>

Then, in the codebehind ( MyMaster.Master.cs ), I have:

myLiteral.Text = "Some different text";

No matter what I try, I get

The name 'myLiteral' does not exist in the current context

I've tried cleaning and rebuilding my whole solution, but it doesn't make any difference.

What am I doing wrong?

Edit: To clarify, I'm trying to change the text of the Literal control in the codebehind of the master page , not a content page. Specifically, I'm doing this in the Page_Load method of the master file.

Answer 1

Figured it out! I wish I knew why, but the Masterfile was missing it's corresponding .designer.cs file. I tried several things to get VS to regenerate the designer file, but I finally found the trick in one of the answers to this question .

The trick is to create an empty code file with the correct name (in my case MyMaster.Master.designer.cs . Then open the masterfile ( MyMaster.Master ) and make some small change to cause VS to resave the file. When that happens, it magically fills in the empty designer file!

So, this problem is solved. However, if anyone knows why a) my designer file disappeared in the first place, and b) if there's any better way of forcing VS to regenerate the designer files if they happen to disappear, that would fantastic.

Answer 2

that is some problem of VS, i have witness such issues in VS 2010 when the controls were not forming. Whenever such things happens i try the following things - 1. Cleaning and rebuilding solution. 2. Dragging and dropping the contacts from toolbox which is not creating. 3. Restarting computer.

This thing happens only sometimes. I would recommend you to use VS 2013 as it is mostly bug free(if not 100%).

Thanks