上传文件的两种方法

asp.net两种上传文件的方法：

1、通过HttpFileCollection类和input控件（type=file）

<form runat="server" id="form1" enctype="multipart/form-data">
    <input id="File1" type="file" name="File1" /><br />
    <input id="File2" type="file" name="File2" /><br />
    <asp:Button ID="Button1" runat="server" Text="上传" OnClick="Button1_Click" />
    <br />
    <asp:Button ID="Button2" runat="server" Text="Next" OnClick="GoNext" />
    </form>

 

  if (Request.Files != null)
        {
            HttpFileCollection files = Request.Files;
            string fileName = string.Empty;
            for (int i = 0; i < files.Count; i++)
            {
                if (files[i].ContentLength <= 0)
                {
                    continue;
                }
                fileName = Path.GetFileName(files[i].FileName);
                files[i].SaveAs(Request.MapPath("Image/" + fileName));
            }
        }

 

第二种方法：用upload控件

 if (FileUpload1.HasFile == false)
            {
                this.Label1.Text = "上传文件不存在";
            }
            HttpPostedFile file = FileUpload1.PostedFile;
            if (file.ContentLength <= 0)
            {
                this.Label1.Text = "文件内容为空不能上传";
            }
            string filename = Path.GetFileName(file.FileName);
            string filePath = Server.MapPath("Image/" + filename);

            if (File.Exists(filePath) == false)
            {
                try
                {
                    file.SaveAs(filePath);
                    this.Label1.Text = "上传成功";
                }
                catch
                {
                    this.Label1.Text = "上传失败";
                }
            }

<asp:FileUpload ID="FileUpload1" runat="server" />
        <asp:Button ID="Button1" runat="server"
            Text="Button" onclick="Button1_Click" /><br />
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>