asp從服務器路徑目錄中選擇隨機文件

Question

我找到了解決方案，但我沒有正確的路徑。

select random file from directory

public string getrandomfile2(string path) 
{ 
    string file = null; 
    if (!string.IsNullOrEmpty(path)) 
    { 
     var extensions = new string[] { ".png", ".jpg", ".gif" }; 
     try 
     { 
      var di = new DirectoryInfo(path); 
      var rgFiles = di.GetFiles("*.*").Where(f => extensions.Contains(f.Extension.ToLower())); 
      Random R = new Random(); 
      file = rgFiles.ElementAt(R.Next(0,rgFiles.Count())).FullName; 
     } 
     // probably should only catch specific exceptions 
     // throwable by the above methods. 
     catch {} 
    } 
    return file; 
} 

我用這些路徑，但沒有工作的大概：

"/Images/defaultImages" 
"~/Images/defaultImages" 
"Images/defaultImages" 

什麼是正確的路徑？

Answer 1

嘗試

Server.MapPath("~/Images/defaultImages") 

另外，還要確保您的defaultImages文件夾中包含的圖像文件