asp.net里的代码：
<form id="Form1" method="post" runat="server" enctype="multipart/form-data"> <input type="file" runat="server" id="UploadImage" name="UploadImage"> <asp:Button id="Button1" runat="server" Text="Button"></asp:Button> <asp:Label id="lblMsg" runat="server" ForeColor="Red"></asp:Label> </form>
button的事件如下：
private void Button1_Click(object sender, System.EventArgs e)
{
string all_filename,this_filename,ext_filename,new_filename; if(UploadImage.PostedFile.ContentLength==0)
{ this.lblMsg.Text="该文件不存在。";
} else { all_filename=UploadImage.PostedFile.FileName; string[] a=all_filename.Split("\\".ToCharArray()); this_filename=a[a.Length-1].ToString(); ext_filename=this_filename.Remove(0,this_filename.LastIndexOf(".")); new_filename=System.Guid.NewGuid()+ext_filename; UploadImage.PostedFile.SaveAs(Server.MapPath("/sourcefile") + @"\c1\" + new_filename); }
}
以上是对单个文件的上传的方法，如果要同时实现多文件的上传。代码如下：
这是asp.net页面里的代码，注意新添加的file可以不需要id和name的
<form id="Form1" method="post" encType="multipart/form-data" runat="server"> <P><input id="UploadImage" type="file" name="UploadImage" runat="server"><br> <input type="file" runat="server"><br> <input type="file" runat="server"></P> <P> <asp:Button id="Button1" runat="server" Text="Button"></asp:Button> <asp:Label id="lblMsg" runat="server" ForeColor="Red"></asp:Label></P> </form>
c#代码部分
{ for(int i=0;i<Request.Files.Count;i++) { System.Web.HttpPostedFile myfile=Request.Files[i]; string all_filename,this_filename,ext_filename,new_filename; if(myfile.ContentLength!=0) { all_filename=myfile.FileName; string[] a=all_filename.Split("\\".ToCharArray()); this_filename=a[a.Length-1].ToString(); ext_filename=this_filename.Remove(0,this_filename.LastIndexOf(".")); new_filename=System.Guid.NewGuid()+ext_filename; myfile.SaveAs(Server.MapPath("/sourcefile") + @"\c1\" + new_filename); } } }
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