File Uploader on Godaddy Server C# Code

I wanted to upload a .pdf file from my web Application to my server which is shared server on Godaddy.
I thought to use the FTP Upload so below is the code which I used 



 //public void ftpfile(string ftpfilepath, string inputfilepath)
    //{
    //    string ftphost = "127.0.0.1";
    //    //here correct hostname or IP of the ftp server to be given  


    //    string ftpfullpath = "ftp://" + ftphost + ftpfilepath;
    //    System.Net.FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(ftpfullpath);
    //    ftp.Credentials = new NetworkCredential("username", "password");
    //    //userid and password for the ftp server to given  


    //    ftp.KeepAlive = true;
    //    ftp.UseBinary = true;
    //    ftp.Method = WebRequestMethods.Ftp.UploadFile;
    //    FileStream fs = File.OpenRead(inputfilepath);
    //    byte[] buffer = new byte[fs.Length];
    //    fs.Read(buffer, 0, buffer.Length);
    //    fs.Close();
    //    Stream ftpstream = ftp.GetRequestStream();
    //    ftpstream.Write(buffer, 0, buffer.Length);
    //    ftpstream.Close();
    //}

Above code worked well from my Local machine and I was able to transfer the file to the godaddy hosting server.but the same code when I deployed on server gave the following error

Security Exception

Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. 

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 

[SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]

   System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) +0

   System.Security.CodeAccessPermission.Demand() +58

   System.Net.FtpWebRequest..ctor(Uri uri) +161

   System.Net.FtpWebRequestCreator.Create(Uri uri) +24

   System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase) +216

   System.Net.WebRequest.Create(String requestUriString) +44

   Upload.ftpfile(String ftpfilepath, String inputfilepath) +32

   Upload.btnUpload_Click(Object sender, EventArgs e) +58

   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111

   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110

   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10

   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13

   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36

   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785

   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242

   System.Web.UI.Page.ProcessRequest() +80

   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21

   System.Web.UI.Page.ProcessRequest(HttpContext context) +49

   ASP.upload_aspx.ProcessRequest(HttpContext context) +4

   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181

   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Version Information: Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3053

I tried to change the trust level in web.config file but Godaddy has blocked it you can not make the Hight Trust.

So I left that idea and used the File Uploader Control of ASP.NET 2.0 and below is the code which I wrote on Upload Click Button

 protected void btnUpload_Click(object sender, EventArgs e)

    {

 string filePath = "~/";

        string fileName = FileUpload1.FileName.ToString();

       FileUpload1.SaveAs(Server.MapPath(filePath) + "Test-brochure.pdf");

}

I uploaded the above code and it worked fine and the .pdf file was getting saved with the name Test-brochure.pdf in the root directory.but in this case my pdf file size was 26kb.

but when i gave the 25MB size file I/p .It din't work In Uploading progess bar it went till 15% then again came to 0 and went till 15% and the page has been removed from the server was coming.

I realized that the problem was of file size

so to make it work for the 25MB  file size I added the following node in <system.web> in web.config file

<httpRuntime 

executionTimeout="330" 

maxRequestLength="33792" 

requestLengthDiskThreshold="80" 

useFullyQualifiedRedirectUrl="false" 

minFreeThreads="8" 

minLocalRequestFreeThreads="4" 

appRequestQueueLimit="5000" 

enableKernelOutputCache="true" 

enableVersionHeader="true" 

requireRootedSaveAsPath="true" 

enable="true" 

shutdownTimeout="90" 

delayNotificationTimeout="5" 

waitChangeNotification="0" 

maxWaitChangeNotification="0" 

enableHeaderChecking="true" 

sendCacheControlHeader="true" 

apartmentThreading="false" />

basically these two highlighted attributes i increased according to my file size .
default is the below in machine.config

             <httpRuntime maxRequestLength="4096" />

and 

<httpRuntime maxRequestLength="10000" />
will establish a max file upload size of 10,000 Kilobytes.

You can change this attribute according to ur file size
You can set this more broadly in your machine.config, too.