Delete file ion Web in Asp.Net using C#

1.

System.IO.FileInfo f = new System.IO.FileInfo("your file path");
           f.Delete();

2. Set button's OnClientClick property as
OnClientClick ="return javascript:confirm('Are you sure to delete?')";

Temporary ASP.NET Files folder (c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files) was the the one with the problem here. First, I thought that the problem is related to security permissions on the folder and I was right.

I right clicked on the Temporary ASP.NET Files folder and go to the security tab. I noticed that there is user called IIS_IUSRS and that guy has the full control permission. But apparently that was not enough.

The Temporary ASP.NET Files and C:\Windows\temp folders should have IIS_WPG and NETWORK SERVICE users with the full control permission. I have no idea why C:\Windows\temp folder needs that but I have no effort left to try to find that. Instead, I am writing a blog post about the problem. Maybe latter I will get to that and figure it out, too

Once you applied those setting, restart your IIS and try to run your application again. The error should be gone by now.

I suffered a lot by trying to find the right method for the problem and I hope you didn’t have to go through hell over this.

edit:

Reference : http://www.tugberkugurlu.com/archive/local-iis-7-0-cs0016--could-not-write-to-output-file-microsoft-net-framework-v4-0-30319-temporary-asp-net-files[^]