HttpFileCollection与HttpPostedFile这二个类的组合就可以完成

前端

 

<

asp:FileUpload ID

=

"

FileUpload1

"

 runat

=

"

server

"

 

/>

        

<

br 

/>

        

<

asp:FileUpload ID

=

"

FileUpload2

"

 runat

=

"

server

"

 

/>

        

<

br 

/>

        

<

asp:FileUpload ID

=

"

FileUpload3

"

 runat

=

"

server

"

 

/>

        

<

br 

/>

        

<

asp:Button ID

=

"

Button1

"

 runat

=

"

server

"

 onclick

=

"

Button1_Click

"

 Text

=

"

Button

"

 

/>

        

<

br 

/>

        

<

asp:Label ID

=

"

Label1

"

 runat

=

"

server

"

></

asp:Label

>

 

后端

string

 filePath 

=

 Server.MapPath(

""

) 

+

 

"

\\UploadFiles\\

"

;

            HttpFileCollection uploadFiles 

=

 Request.Files;

            

for

 (

int

 i 

=

 

0

; i 

<

 uploadFiles.Count; i

++

)

            {

                HttpPostedFile userPostFile 

=

 uploadFiles[i];

                    

try

                    {

                        

if

 (userPostFile.ContentLength 

>

 

0

)

                        {

                            userPostFile.SaveAs(filePath 

+

 Path.GetFileName(userPostFile.FileName));

                            Label1.Text 

=

 

"

上传成功!

"

;

                        }

                    }

                    

catch

 (Exception ex)

                    {

                        Label1.Text 

=

 

"

Error: 

"

 

+

 ex.Message;

                    }

            }