Create a CRM 4.0 lookup user control in ASP.NET

I got one requirement In a project related to CRM to create a lookup user control with look and feel same as lookup control in MS CRM 4.0

After spending some days Me and Team successfully developed the CRM 4.0 lookup control. To include it in the page just add two below lines in the page.

1- Register the "ascx" Control in a page

<%@ Register Src="Controls/LookupControl.ascx" TagName="LookupControl" TagPrefix="ucLkp" %>

2- to use at your location just add this line

<ucLkp:LookupControl ID="lkpAnsWbs" runat="server" />

If you have any requirement to develop the same type of control then please put a comment in this post to find a code.

Correct way to pass data or parameters in JSON call.

Some times ago I was working on the project with JSON call and at the time my requirement to pass some data from outside by variables in the JSON. I tried various ways to pass data but did not find any success, I have also google multiple sites and blogs but not able to find the solution. finally I got the solution after some hidden trial.

There are two ways to pass the data in JSON

1- Pass data as Array

            var arr = {};
            arr.FetchXML = fetchXml;
            arr.LayoutXML = layoutXml;
            arr.EntityName = entityName;
            arr.DefaultAdvFindViewId = defaultAdvFindViewId;
            arr.ViewType = 1039;
            arr.SortCol = sortCol;
            arr.SortDescend = sortDescend;

            $.ajax({
                type: "POST",
                contentType: "application/x-www-form-urlencoded",
                datatype: "json",
                url: url,
                data: arr,
                timeout: timeoutvalue,
                beforeSend: function (XMLHttpRequest) {
                    //Specifying this header ensures that the results will be returned as JSON.
                    XMLHttpRequest.setRequestHeader("Accept", "application/json");
                },
                success: function (data, textStatus, XmlHttpRequest) {
                    PushResponseContents(iFrame, XmlHttpRequest, entityTypeId);
                },
                error: function (XMLHttpRequest, textStatus, errorThrown) {
                    //errorHandler(XMLHttpRequest, textStatus, errorThrown);
                    //alert(textStatus);
                    //alert(errorThrown);
                    doc.open();
                    doc.write("");
                    doc.close();
                    alert("Request Timeout. Please refine your search criteria");
                }
            });

2- Pass data as parameter

$.ajax({
            type: "POST",
            url: "http://" + location.hostname + "/ISV/",
            data: "{\"id\":'" + id + "'}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (response) {
                // alert(response);
            },
            error: function (jqXHR, textStatus, errorThrown) {
                //alert(jqXHR);
                //alert(textStatus);
                //alert(errorThrown);
            }

        });

Note: If this blog help to find/resolve your query then please comment.