C# 从bing下载图片出现错误

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  public void Saving(string fileName,string url)       
   {            
        using (WebClient client = new WebClient())           
        {               
            client.DownloadFile(new Uri(url), fileName);           
        }      
   }
  
  private void wallpaper_Click(object sender, RoutedEventArgs e)        
  {            
            m_fileName = m_namenumber + ".png";            
            try            
            {                
                  saveImage.Saving(m_fileName, BingImage.GetBingImageUrl(url));           
            }           
            catch (ExternalException ed)           
            {                
                   Console.WriteLine(ed.Message);           
            }           
           catch (ArgumentNullException ed)            
            {                
                   Console.WriteLine(ed.Message);           
             }       
   }

  在这一句出现client.DownloadFile(new Uri(url), fileName);错误

  用户未处理的异常

  System.Net.WebException:“An exception occurred during a WebClient request.”
  

  内部处理异常

  UnauthorizedAccessException: Access to the path 'E:\VS2019\project\2022.12.09\bing壁纸开发\App_bing2\bin\x64\Debug\AppX\0.png' is denied.
  

  此异常最初是在此调用堆栈中引发的: 
      [外部代码]

  请问这是因为什么呢？

  12 Aralık 2022 Pazartesi 10:02

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