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1.简单的UpFileLoad上传（本地）
Page：
<pre class="html" name="code"><div>
<table>
<tr>
<th>附件：</th>
<td><asp:FileUpload ID="ImgFileUpload1" runat="server" /></td>
</tr>
<tr>
<td><asp:Button ID="btnSaveImmg" runat="server" Text="保存" OnClick="btnSaveImmg_Click" /></td>
</tr>
</table>
</div>Code:
//获取全路径
string fullFileName = ImgFileUpload1.PostedFile.FileName.ToString();
//获取文件名
string fileName = ImgFileUpload1.FileName.ToString();
//获取文件类型 string typeImg = System.IO.Path.GetExtension(fullFileName);
string type = fileName.Substring(fileName.LastIndexOf(".") + 1);
//获取上传路径
string path = Server.MapPath("image\\") + fileName;
Response.Write(path);
//文件大小
FileInfo file = new FileInfo(fullFileName);
float size = (file.Length / 1024) / 1204;
if (File.Exists(path))
{
Response.Write("<script language='javascript'>alert('图片存在')</script>");
return;
}
else
{
if (type == "jpg" || type == "mp3")
{
if (size > 4)
{
Response.Write("<script language='javascript'>alert('图片不允许大于4MB')</script>");
return;
}
else
{
ImgFileUpload1.PostedFile.SaveAs(path);
Response.Write("<script language='javascript'>alert('上传成功')</script>");
}
}
else
{
Response.Write("<script language='javascript'>alert('图片格式错误')</script>");
}
}
}2.网络上的图片下载下了到本地相对路径
Page：
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td><asp:TextBox ID="txtGetDirectory" runat="server" Text="输入获取文件路径"></asp:TextBox></td>
</tr>
<tr>
<td><asp:TextBox ID="txtSaveDirectory" runat="server" Text="输入保存文件路径"></asp:TextBox></td>
</tr>
<tr>
<td><asp:Button ID="btnGetRequest" runat="server" Text="保存网络上的图片到本地" OnClick="btnGetRequest_Click" /></td>
</tr>
</table>
</div>
<div>
执行状态 ：
<asp:Label ID="lblInfo" runat="server" Text=""></asp:Label>
执行时间 ：
<asp:Label ID="lblDate" runat="server" Text=""></asp:Label>
</div>
</form>
</body>Code：
System.Diagnostics.Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
HttpWebRequestDataInit();
stopwatch.Stop();
TimeSpan ts = stopwatch.Elapsed;
//时：分：秒：毫秒
// Format and display the TimeSpan value.
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10);
lblDate.Text = elapsedTime;
}
protected void HttpWebRequestDataInit()
{
string uploadUrl = txtGetDirectory.Text;
string downloadUrl = txtSaveDirectory.Text;
if (uploadUrl.Length < 1)
{
//输入获取文件路径
Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script languege='javascript'>alert('输入获取文件路径');</script>");
return;
}
if (downloadUrl.Length < 1)
{
//输入保存文件路径
Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script languege='javascript'>alert('输入保存文件路径');</script>");
return;
}
if (!System.IO.Directory.Exists(downloadUrl))
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script languege='javascript'>alert('输入保存文件路径不存在');</script>");
return;
}
DateTime date = DateTime.Now;
//创建一个Web请求，返回HttpWebRequest对象
HttpWebRequest hwr = (HttpWebRequest)WebRequest.Create(uploadUrl);
//设置接收对象的范围为0-10000000字节。
hwr.AddRange(0, 10000000);
using (Stream inStream = hwr.GetResponse().GetResponseStream())
{
if (System.IO.Directory.Exists(downloadUrl))
{
string urlImageType = uploadUrl.Substring(uploadUrl.LastIndexOf("."), uploadUrl.Length - uploadUrl.LastIndexOf("."));
//这里作出判断 避免网络上没有显示后缀的图片
if (urlImageType.Length < 1 || urlImageType.Length > 4)
{
urlImageType = ".jpg";
}
string urlImageName = uploadUrl.Substring(uploadUrl.LastIndexOf("/"), uploadUrl.Length - uploadUrl.LastIndexOf("/")).Replace("/", "");
string TempdownloadUrl = downloadUrl + date.ToString().Replace("/", "").Replace(":", "").Replace(" ","") + urlImageType;
if (Topevery_DUM_Bloss.UtilityHelper.GetAttachType(urlImageType)==0)
{
using (FileStream fs = File.Create(TempdownloadUrl))
{
try
{
//建立字节组，并设置它的大小是多少字节
byte[] bytes = new byte[102400];
int n = 1;
while (n > 0)
{
//一次从流中读多少字节，并把值赋给Ｎ，当读完后，Ｎ为０,并退出循环
n = inStream.Read(bytes, 0, 10240);
fs.Write(bytes, 0, n); //将指定字节的流信息写入文件流中
}
}
catch (Exception ex)
{
//LogHelper.Error("FMP错误", ex);
throw ex;
}
finally
{
if (inStream != null)
{
inStream.Close();
inStream.Dispose();
}
}
lblInfo.Text = "执行成功";
}
}
}
else
{
lblInfo.Text = "找不到文件路径，未执行成功";
}
}
}Topevery_DUM_Bloss.UtilityHelper.GetAttachType(urlImageType)public static Int32 GetAttachType(string type)
{
Int32 attachType = 3;
switch (type.ToLower())
{
case ".jpg":
case ".gif":
case ".png":
case ".bmp":
case ".jpeg":
attachType = 0;
break;
case ".wav":
case ".mp3":
case ".wma":
case ".ram":
case "amr":
attachType = 1;
break;
case ".mpeg":
case ".rm":
case ".wmv":
case ".avi":
case ".mp4":
case ".mts":
attachType = 2;
break;
} return attachType;
}