ASP.NET多文件上传方法

来源：互联网发布：数据精灵后台授权系统编辑：程序博客网时间：2024/06/10 09:25

前台代码

}
</script>

<form id="form1" method="post" runat="server" enctype="multipart/form-data">
<div align="center">
<h3>多文件上传</h3>
<P id="MyFile"><INPUT type="file" size="30" NAME="File"><br></P>
<P>
<input type="button" value="增加(Add)" onclick="addFile()"> <input onclick="this.form.reset()" type="button" value="重置(ReSet)">
<asp:Button Runat="server" Text="开始上传" ID="UploadButton">
</asp:Button>
</P>
<P>
<asp:Label id="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt" Width="500px"
BorderStyle="None" BorderColor="White"></asp:Label>
</P>
</div>
</form>

后台代码

protected System.Web.UI.WebControls.Button UploadButton;
protected System.Web.UI.WebControls.Label strStatus;

private void Page_Load(object sender, System.EventArgs e)
{
/// 在此处放置用户代码以初始化页面
if (this.IsPostBack) this.SaveImages();
}

private Boolean SaveImages()
{
///'遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files;

/// '状态信息
System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
strMsg.Append("上传的文件分别是：<hr color=red>");
try
{
for(int iFile = 0; iFile < files.Count; iFile++)
{
  ///'检查文件扩展名字
  HttpPostedFile postedFile = files[iFile];
  string fileName,fileExtension,file_id;

  //取出精确到毫秒的时间做文件的名称
  int year = System.DateTime.Now.Year;
  int month = System.DateTime.Now.Month;
  int day = System.DateTime.Now.Day;
  int hour = System.DateTime.Now.Hour;
  int minute = System.DateTime.Now.Minute;
  int second = System.DateTime.Now.Second;
  int millisecond = System.DateTime.Now.Millisecond;
  string my_file_id = year.ToString() + month.ToString() + day.ToString() + hour.ToString() + minute.ToString() + second.ToString() + millisecond.ToString()+iFile.ToString();

  fileName = System.IO.Path.GetFileName(postedFile.FileName);
  fileExtension = System.IO.Path.GetExtension(fileName);
  file_id = my_file_id+fileExtension;
  if (fileName != "")
  {
   fileExtension = System.IO.Path.GetExtension(fileName);
   strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
   strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
   strMsg.Append("上传文件的文件名：" + file_id + "<br>");
   strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
   postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + file_id);
  }
}
strStatus.Text = strMsg.ToString();
return true;
}
catch(System.Exception Ex)
{
strStatus.Text = Ex.Message;
return false;
}
}