从jQuery调用将参数传递给Http Handler

我试图调用我的自定义Htpp处理程序,并希望传递一些参数但我无法在http处理程序进程请求方法中检索这些param的值.
我用的代码就像..

在客户端

$.ajax({
                url: 'VideoViewValidation.ashx',type: 'POST',data: { 'Id': '10000','Type': 'employee' },contentType: 'application/json;charset=utf-8',success: function (data) {
                    debugger;
                    alert('Server Method is called successfully.' + data.d);
                },error: function (errorText) {
                    debugger;
                    alert('Server Method is not called due to ' + errorText);
                }
            });

这是我的自定义http Handler

public class VideoViewValidation : IhttpHandler
{

    public void Process@R_674_10613@est(httpContext context)
    {
        String videoID = String.Empty;
        String id = context.@R_674_10613@est["Id"];
        String type = context.@R_674_10613@est["Type"];
}
}

请告诉我问题出在哪里.