我正在尝试使用api上传文本文件，但它无法正常工作

Question

我正在尝试使用API​​上传文本文件，但它无法正常工作 目标url / api url是 http://221.132.117.58:7700/voice_api/voice_api_file_upload.html

方法是POST

必需参数：用户名，密码，CLI，campaignName *，promptID，fileUpload（每个广告系列的campaignName必须是唯一的。）

可选参数：scheduleDatetime示例2016-11-15 16:45:00 ....

我的代码

      namespace doc
{
class Program
{
    public static void Main(string[] args)
    {
        Console.Write("Please enter the URI to post data to : ");
        string urlString =string.Format("http://enterprise.mobilinkcms.com/voice_api/voice_api_file_upload.php");
        var URI = new Uri(urlString);
        var uri = new Uri(URI);
        var path = Path.GetFileName(uri.AbsolutePath);
        var file = GetFile(path);
        WebClient myWebClient = new WebClient();

        //Console.WriteLine("\nPlease enter the fully qualified path of the file to be uploaded to the URI");
        string fileName = "http://enterprise.mobilinkcms.com/voice_api/aa.txt";

        Console.WriteLine("Uploading {0} to {1} ...", fileName, uriString);

        DateTime begin = DateTime.Now;

        byte[] responseArray = null;
        try
        {
            responseArray = myWebClient.UploadFile(file, fileName);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            Console.WriteLine(ex.ToString());
        }

        DateTime end = DateTime.Now;
    }
 }
}

显示的错误是

请求类型'System.Security.Permissions.FileIOPermission，mscorlib，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b77a5c561934e089'的权限失败。