Directory.Exists 在目录存在时返回 false（适用于独立控制台应用程序，但不适用于 ASP 项目）

Question

As it is described in the title, ASP.NET project code can't find the directory, which exists and can be found by the console C# application. (Disclaimer: I am totally new to .NET and C#).

This displays "true" in the console application, but Directory.Exists evaluates to false in the ASP.NET application.

string directoryPath = 
                "C:\\Users\\AndreasT\\ProjectDirectory\\ChildDirectory";

Console.WriteLine(Directory.Exists(directoryPath));

As I am new to .NET, I cannot give more detailed and accurate information at the moment, so I am looking for any suggestions of what could be wrong (permissions, project setup, etc.)

Answer 1

Directory.Exists() method returns false if you dont have minimum read-only permission. It returns false in the following conditions.

1. File name with invalid characters
2. Too many characters
3. Failing or missing disk
4. No permission to read the file

Reference: https://docs.microsoft.com/en-us/dotnet/api/system.io.directory.exists?view=netcore-3.1#remarks