Post to Get method Conversion Vulnerability in ASP.net application

How can an Asp.Net web application be prevented from accepting Post to Get method conversion. More precisely, how can 'GET' requests be rejected where a 'POST' data is expected. I will greatly appreciate clarification on how this VULNERABI开发者_如何学GoLITY occurs and how it can be prevented. Thanks.

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Generally speaking you can check for a POST by doing Page.IsPostBack in web forms: http://msdn.microsoft.com/en-us/library/system.web.ui.page.ispostback.aspx

If you're talking MVC, you generally just set the [HttpPost] attribute: http://msdn.microsoft.com/en-us/library/system.web.mvc.httppostattribute.aspx