如何從ASP.NET MVC中的Controller構造函數中找到文件夾的路徑？
[英]How Can I Find The Path To A Folder from a Controller Constructor in ASP.NET MVC?
I am trying to get the path to a folder in my website root and save it to a class property when my controller constructor is called:
我試圖獲取我的網站根目錄中的文件夾的路徑，並在調用我的控制器構造函數時將其保存到類屬性：
public TestController:Controller{
string temp;
public TestController(){
temp = "";
}
}
I have tried the following:
我嘗試過以下方法：
temp = Server.MapPath("~/TheFolder/"); // Server is null - error.
temp = Request.PhysicalApplicationPath + @"TheFolder\"; // Request is null - error.
Any ideas?
有任何想法嗎？
3 个解决方案
#1
25
AppDomain.CurrentDomain.BaseDirectory will give you the root of your site. So:
AppDomain.CurrentDomain.BaseDirectory將為您提供站點的根目錄。所以：
temp = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TheFolder");
(Update thanks to Marc Gravell's comment)
（感謝Marc Gravell的評論）
#2
7
Do you actually need this path during the constructor? If you don't need it until the main page cycle begins, consider deferring it - just using a regular property; something like
在構造函數中你真的需要這個路徑嗎？如果您在主頁循環開始之前不需要它，請考慮推遲它 - 只需使用常規屬性;就像是
public string BasePath {
get { return Server.MapPath("~/TheFolder/"); }
}
Then when this is used during the page cycle, it should be fine. You could cache it if you really want to, but I don't imagine this is going to be a bottleneck:
然后，當在頁面循環期間使用它時，它應該沒問題。如果你真的想要，你可以緩存它，但我不認為這將是一個瓶頸：
private string basePath;
public string BasePath {
get {
if(basePath == null) basePath = Server.MapPath("~/TheFolder/");
return basePath;
}
}
#3
0
Try going through the ControllerContext. Forgive my syntax, but it should something like this:
嘗試瀏覽ControllerContext。請原諒我的語法，但它應該是這樣的：
base.[Controller?]Context.HttpContext.Server.MapPath();
If Server is still null in that situation, are you running outside of a web request (ie. in a test)?
如果在這種情況下服務器仍為空，您是否在Web請求之外運行（即在測試中）？
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