I think that working Visual Studio demo projects can help you mostly.
The demo from the answer uses the ASHX handler in the ASP.NET Web Application Form. It uses only the free open source jqGrid package , which consists only of JavaScript code. The latest version of the source code that you can download from github .
Another demonstration from the answer uses the ASHX handler in the ASP.NET Web application form too. It shows how to implement mesh editing.
, , jqGrid. , ASHX - ASP.NET . , , . , Entity Framework, LINQ to SQL, , SqlCommand SqlDataReader.
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