Uri Scheme maximum length

I have a web application and an client application, my requirement is to load the application from the browser with a parameter string. Originally i was using ActiveX but have moves away for obvious reasons (other browser support). Currently I am using URI Scheme to launch my application. but found that it does not always work as

in one scenario the URI length was found to be 2781 characters. Is there a way to pass such big strings to an application from the web browser.

My client application is c#