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My Asp.net mvc,Asp.net, linq and jquery Faqs

Here I want to make the list of every thing about Asp.mvc, linq and jquery I have been involved in or I can get my hands on or find very interesting. The list will keep on growing over time.

How to get the current Route Id in the view from Url?

<%=Url.RequestContext.RouteData.Values["id"] %> 

What is difference between Html.Partial and Html.RenderPartial?

Good complete answer here.

What is Mvc Futures Library?

Please refer here for the answer.
http://stackoverflow.com/questions/2734316/asp-net-mvc-futures-refresh-for-mvc2.

What is TempData?

Answer here

What is Difference between ViewData and ViewBag?

See here And here

Many to Many Relationship in linq to sql ?

http://geekswithblogs.net/WinAZ/archive/2010/01/09/simplified-many-to-many-relationships-with-linq-to-sql.aspx
http://www.codeproject.com/KB/linq/linq-to-sql-many-to-many.aspx
http://www.iaingalloway.com/many-to-many-relationships-in-linq-to-sql-part-2

How to catch error in Jquery's load ?
To Invoke It: Call throw new Exception() from controller's catch
  
var ph = $("#Cat");
            ph.load("/Categories/Index", function (responseText, textStatus, req) {
                if (textStatus == "error") {
                    window.location = "../User/Logon";
                }
                else {
                alert(textstatus);
                }
            });
How to Create comma seperated string using linq? 
 var Tags = _db.TagPosts.Where(m => m.bint_PostId == id);
 return string.Join(",", (from p in Tags select p.Tag.vcr_TagName)); 

Linq to sql case insensitive string matching? 

if (string.Equals(string1,string2,StringComparison.OrdinalIgnoreCase)) 
{ 
}


Exporting Gridview DataSet to Excel

http://stackoverflow.com/questions/5621577/export-from-sql-server-to-excel-file-using-asp-net-and-vb-net

Get the text and value of the selected item of dropdown in jquery 
alert($("#selectlist option:selected").text());
alert($("#selectlist option:selected").val());

Find out If a particular element exists in jquery 
if ($("#row-" + exist).length) {

  }
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