如何清除此错误：无法将类型'System.Net.WebRequest'隐式转换为'System.Net.FtpWebRequest'。存在显式转换（您是否错过了演员？） [英] How to remove this error: Cannot implicitly convert type 'System.Net.WebRequest' to 'System.Net.FtpWebRequest'. An explicit conversion exists (are you missing a cast?)

问题描述

我遇到此错误如何删除它：

无法将类型'System.Net.WebRequest'隐式转换为'System.Net.FtpWebRequest' 。存在显式转换（你错过了演员吗？）

我的代码在这里：

 public bool Upload（byte [] FileByte，string FileName ，字符串ftpUserID，字符串ftpPassword，字符串ftpURL）
 {
 bool retValue = false; 
 
尝试
 {
 string ftpFullPath =// elink / Keshav / Images / Emp Docs; 
 
 FtpWebRequest ftp = FtpWebRequest.Create（new Uri（ftpFullPath））; 
 
 ftp.Credentials = new NetworkCredential（keshav，abc @ 789）; 
 ftp.KeepAlive = true; 
 ftp.UseBinary = true; 
 ftp.Method = WebRequestMethods.Ftp.UploadFile; 
 Stream ftpStream = ftp.GetRequestStream（）; 
 ftpStream.Write（FileByte，0，FileByte.Length）; 
 ftpStream.Close（）; 
 ftpStream.Dispose（）; 
 retValue = true; 
} 
 catch（exception ex）
 {
 throw ex; 
} 
 
返回retValue; 
} 

解决方案

更改

 FtpWebRequest ftp = FtpWebRequest.Create （new Uri（ftpFullPath））; 

to

 FtpWebRequest ftp =（FtpWebRequest）WebRequest.Create（new Uri （ftpFullPath））; 

Hi,
I am facing this error how to remove it:
Cannot implicitly convert type 'System.Net.WebRequest' to 'System.Net.FtpWebRequest'. An explicit conversion exists (are you missing a cast?)
My Code is here:

public bool Upload(byte[] FileByte, string FileName, string ftpUserID, string ftpPassword, string ftpURL)
{
  bool retValue = false;
 
  try
  {
    string ftpFullPath = "//elink/Keshav/Images/Emp Docs";
     
    FtpWebRequest ftp = FtpWebRequest.Create(new Uri(ftpFullPath));
    
    ftp.Credentials = new NetworkCredential("keshav", "abc@789");
    ftp.KeepAlive = true;
    ftp.UseBinary = true;
    ftp.Method = WebRequestMethods.Ftp.UploadFile;
    Stream ftpStream = ftp.GetRequestStream();
    ftpStream.Write(FileByte, 0, FileByte.Length);
    ftpStream.Close();
    ftpStream.Dispose();
    retValue = true;
  }
  catch (Exception ex)
  {
    throw ex;
  }
  
  return retValue;
}

解决方案

Change

FtpWebRequest ftp = FtpWebRequest.Create(new Uri(ftpFullPath));

to

FtpWebRequest ftp = (FtpWebRequest)WebRequest.Create(new Uri(ftpFullPath));

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