How to upload a zip file with less than 10MB size

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Hi I am a C# fresher to C#. I am developing a page to upload a zip file to server with less than 10MB. Now i am able to upload the zip file to server, but still unable to validate the file type(only allow zip file) and file size.

here is my code:

XML

<system.web>
    <httpRuntime maxRequestLength="10240" executionTimeout="1500"/>
  </system.web>

XML

<form id="form1" method="post" enctype="multipart/form-data" runat="server">

    <input type="file" id="File1" name="File1" />
    <br/>
    <input type="submit" value="Upload Data File" name="cmdSubmit"/>
    </form>

Behind code:

C#

protected void Page_Load(object sender, EventArgs e)
       {
           foreach (string key in Request.Files.Keys)
           {
               HttpPostedFile file = Request.Files.Get(key);
               string fn = Path.GetFileNameWithoutExtension(file.FileName) +
               DateTime.Now.ToString("ddMMyyyy") + Path.GetExtension(file.FileName);
               file.SaveAs(Server.MapPath("./data/" + fn));

               Response.Write("<br>" + fn + " is uploaded!");

           }

       }

Thanks in advance.

Posted 3-Apr-11 0:18am

emmep

Updated 3-Apr-11 1:27am

pankajupadhyay29

v2

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pankajupadhyay29 · Answer 1 · 2011-04-03T01:36:00

The answer for your question is within your code

check for extension by string comparison

C#

if(string.Compare(Path.GetExtension(file.FileName),".zip",true)!=0)
{
ShowMessage("You Can upload only zip files");
return;
}

void ShowMessage(msg)
{
ClientScript.RegisterStartupScript(GetType(),"msg","alert('"+ msg +"');",true)
}

and for fie size

if((file.FileBytes.LongLength/(1024*1024))>10)
{
ShowMessage("You can upload upto 10Mb");
}

--Pankaj