How to render user control in asp.net with ajax

function yourfunction(val1) {
$.ajax({
type: "POST",
url: "..GetData.aspx",
data: 'param=ctlParam&qs=' + val1,
success: function (data) {
//do what you need
},
error: function (request, status, error) {
alert(request.responseText);
}
});
}


Use the code in .aspx page

Dim strparam As String = Request.Form("param")
Dim strResponse As String = ""
hshProperty.Add("qs", Convert.ToInt32(Request.Form("qs")))
strResponse = ViewManager.RenderUserControl("yourcontrol.ascx", hshProperty)

''qs will be property in yourcontrol.ascx

Response.Write(strResponse)