在C＃/ XNA中使用directoryInfo时获取异常

问题描述

Hello Everybody！

想想我的Windows Phone应用程序有问题。在我的应用程序中，我有一个静态方法，它返回一个位于特定文件夹中的纹理集合。当我在WP 8 Emulator上启动我的应用程序时，它工作得非常好，但是当我在WP 7模拟器上启动
时，我得到一个异常，并显示消息"尝试访问该方法失败：System.IO .DirectoryInfo..ctor（System.String）"。

但事实上这个目录是存在的。有谁可以告诉我为什么会发生这种情况？

这里我附上了我的代码：

 namespace Hornbook_v2 
 {
 public static class ContentLoader 
 {
 public static Dictionary< String， T> LoadTextures< T>（此ContentManager contentManager，字符串contentFolder）
 {
 //加载目录信息，如果没有则中止
 DirectoryInfo目录=新DirectoryInfo（contentManager.RootDirectory +" \\ " + contentFolder）; 
 
 //这个例外发生在这里！ 
 if（！dir.Exists）
抛出新的DirectoryNotFoundException（）; 
 
 //初始化结果列表
 Dictionary< String，T> result = new Dictionary< String，T>（）; 
 
 //加载与文件过滤器匹配的所有文件
 FileInfo [] files = dir.GetFiles（" *。*"）; 
 foreach（文件中的FileInfo文件）
 {
 string key = Path.GetFileNameWithoutExtension（file.Name）; 
 
 //结果[key] = contentManager.Load< T>（contentManager.RootDirectory +" /" + contentFolder +" /" + key）; 
 result [key] = contentManager.Load< T>（contentFolder +" /" + key）; 
} 
 
 //返回结果
返回结果; 
} 
 
} 
} 

解决方案

Hello Everybody!

Think I have a problem with my windows phone application. In my application I have a static method that returns me a collection of textures located in specific folder. When I launch my application on the WP 8 Emulator it`s worked very well, but when I launch it on the WP 7 emulator I get an exception with the message "Attempt to access the method failed: System.IO.DirectoryInfo..ctor(System.String)".

But in fact that this directory is existing. Could anybody tell me why this happends ?

Here I attached my code:

namespace Hornbook_v2
{
    public static class ContentLoader
    {
        public static Dictionary<String, T> LoadTextures<T>(this ContentManager contentManager, string contentFolder)
        {
            //Load directory info, abort if none
            DirectoryInfo dir = new DirectoryInfo(contentManager.RootDirectory + "\\" + contentFolder);

            //  The exception is happends HERE!!!
            if (!dir.Exists)
                throw new DirectoryNotFoundException();

            //Init the resulting list
            Dictionary<String, T> result = new Dictionary<String, T>();

            //Load all files that matches the file filter
            FileInfo[] files = dir.GetFiles("*.*");
            foreach (FileInfo file in files)
            {
                string key = Path.GetFileNameWithoutExtension(file.Name);

                //result[key] = contentManager.Load<T>(contentManager.RootDirectory + "/" + contentFolder + "/" + key);
                result[key] = contentManager.Load<T>(contentFolder + "/" + key);
            }

            //Return the result
            return result;
        }

    }
}

解决方案

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