Integrate C# Desktop Application With Browsers

I h开发者_JAVA技巧ave developed an application(downloader) using C# now i want to integrate it to browser like i want to place a button in browsers if user press that button then my app should execute & start downloading the required file.

I'm largely guessing, but it sounds like you are talking about a "protocol handler", i.e. to handle hyperlinks to "yourapp:some-stuff-here". If so, try looking at Registering an Application to a URL Protocol on MSDN, which gives a C# example of this.

I don't think that what you want is possible, you can however place a link to the executable and tell your users to execute it via the Browser download options (The Dialog that pops up when you click on some download link that asks wether you want to open oder save the file).

It is not possible to immedatly run your GUI application on a browser button click.