As many developers have found when uploading files from an FTP server or shared drive, by default, ASP.NET programs cannot upload a dataset from a file that exceeds 4MB.

Its possible by changing the value of maxRequestLength under the tag of <httpRuntime> in the web.config file.

<httpRuntime executionTimeout="420"  maxRequestLength="40960" />

Please note that the value is in KB.

I hope this will help you. A 'Thank You' would be nice!