The button invalid in the ASP.NET
When the new system discovers the previous ASP.NET program running, the server verifies the control, but the button is invalid, and multiple debugging is invalid. However, the WebuiValidation .js file under the INETPUB / WWWROOT / ASPNET_4322 directory is deleted, and the validation control is invalid but the button function is available. I don't know why, I have seen someone on the Internet that may be due to the problem of .NET Framework version, re-run Aspiis -i or copy ASPNET_CLIENT / System_Web / 1_1_4322 / Webuivalidation.js. But I have no previous Webuivalidation.js backup.
But I found that just reinstall .NET Framework, simple and fast, just 1 minute.
