Windows Azure访问App_Data

Question

I need to write file to App_Data folder in Asp.Net MVC project. It works locally, but when I deployed it to Windows Azure I received error like:

Could not find a part of the path 'C:\DWASFiles\Sites\codehint\VirtualDirectory0\site\wwwroot\App_Data\text.txt'.

I need to use third party library that have to get read/write access to App_Data folder.

I use code like this:

var path = Server.MapPath("~/App_Data/text.txt");
using (var file = new StreamWriter(path))
{
   file.Write("test line");
   file.Flush();
}

Answer 1

If App_Data folder was empty, it was not deployed, so you need to create it

see my reply here

Answer 2

如果您使用的是VS2017并右键单击App_Data文件夹，则可以选择发布文件夹。

Answer 3

I had the same problem, and I solved it by creating the initial file in my solution's App_Data folder, and then I added the file to the solution by right-clicking on App_Start and choosing Add->Existing Item...

It needed to be added to the solution in order to be published.