Question

winform如何实现文件上传到指定路径 帖代码出来 谢谢

Answer 1

winform利用webclient 实现文件上传

1:浏览文件
OpenFileDialog open = new OpenFileDialog();
if (open.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
this.textBox1.Text = open.FileName;
}

2：验证URI地址
string URi = "http://192.168.0.222//www/";
WebRequest myWebRequest = WebRequest.Create(URi);
myWebRequest.Timeout = -1;

try
{
WebResponse webResponse = myWebRequest.GetResponse();

Stream webStream = webResponse.GetResponseStream();

webStream.Close();

//开a始º?上¦?传ä?
UploadFile(this.textBox1.Text, URi,true);
}

catch(WebException ex)
{
if (ex.Status == WebExceptionStatus.ProtocolError)
{
MessageBox.Show("服¤t务?器¡Â响¨¬应®|错䨪误¨®，ê?请?检¨¬查¨¦和¨ª服¤t务?器¡Â连¢?接¨®是º?否¤?正y常¡ê！ê?");
}

if (ex.Status == WebExceptionStatus.Timeout)
{
MessageBox.Show("服¤t务?器¡Â超?时º¡À！ê?");
}
}
3：上传方法
private void UploadFile(string fileNamePath, string uriString, bool IsAutoRename)
{
//第̨²一°?步?：êo获?取¨?要°a上¦?传ä?的Ì?文?件t信?息¡é
string fileName = fileNamePath.Substring(fileNamePath.LastIndexOf("\\")+1); //获?取¨?上¦?传ä?文?件t名?称?

string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1).ToLower(); //文?件t后¨®缀Áo：êo小?写¡ä

string newName = fileName;

Guid gg = Guid.NewGuid();

if (IsAutoRename == true)
{
newName = gg.ToString() + fileName.Substring(fileName.LastIndexOf(".")); //文?件t新?的Ì?名?称?
}

//第̨²二t部?：êo处ä|理¤¨ªURI地Ì?址¡¤
if (uriString.EndsWith("/") == false)
{
uriString = uriString + "/";
}

uriString = uriString + newName; //匹£¤配?要°a上¦?传ä?文?件t：êoURI+文?件t名?

//第̨²三¨y部?：êo创ä¡ä建¡§wenClient实º¦Ì例¤y

WebClient client = new WebClient();

client.Credentials = CredentialCache.DefaultCredentials; //设¦¨¨置?进?行D身¦¨ª份¤Y验¨¦证¡è的Ì?网ª?络?凭?证¡è

//第̨²四?部?：êo利¤?用®?流¢¡Â来¤¡ä实º¦Ì现?文?件t上¦?传ä?
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.ReadWrite); //要°a上¦?传ä?的Ì?文?件t穿ä?件t文?件t流¢¡Â

BinaryReader br = new BinaryReader(fs); //以°?二t进?制?方¤?式º?读¨¢取¨?

byte[] postArray = br.ReadBytes((int)fs.Length); //当Ì¡À前¡ã流¢¡Â写¡ä入¨?二t进?制?

Stream postStream = client.OpenWrite(uriString, "PUT"); //向¨°指?定¡§的Ì?地Ì?址¡¤写¡ä入¨?数ºy据Y

try
{
if (postStream.CanWrite)
{
postStream.Write(postArray, 0, postArray.Length);

postStream.Close();

fs.Dispose();

MessageBox.Show("上¦?传ä?成¨¦功|！ê?");
}

else
{
postStream.Close();

fs.Dispose();

MessageBox.Show("上¦?传ä?失º¡ì败㨹！ê?");
}
}

catch(Exception ex)
{
postStream.Close();

fs.Dispose();

MessageBox.Show("上¦?传ä?文?件t异°¨¬常¡ê"+ex.Message);

throw ex;
}

finally
{
postStream.Close();

fs.Dispose();
}
}