The ASP. NET background page does not recognize the server control ID

Under normal circumstances, the ID of the server control is directly written to the server control in the ASP. NET background to manipulate the control directly.

But sometimes, the background does not recognize the server control situation, that is, the input control IDVS no hint, even if you copy the ID, forced operation, the editor immediately error unrecognized.

Cause: There are multiple pages of the same background file referenced by codefile= "inherits=" ". May be due to the time of copying the page, forget the changes caused.
Workaround: Overwrite the background file class that does not recognize the server control ID, and regenerate it once. The error message will indicate where it went wrong.

Then, change it. The background file class is rewritten back to its original name and regenerated. Ok. Normal operation.

The ASP. NET background page does not recognize the server control ID