I see the same for 2011.2.712 when filtering DateTime type columns in Ajax bound grid. Please help !

Replace this:
case"Date":var i;if(h.indexOf("Date(")>-1){i=new Date(parseInt(h.replace(/^\/Date((.*?))\/$/,"$1")))}else{i=b.datetime.parse({value:h,format:f(g)}).toDate()}return"datetime'"+b.formatString("{0:yyyy-MM-ddTHH-mm-ss}",i)+"'"}return h}

By this:
case "Date": var i; /alert('h = ' + h);/ if (!(h instanceof Date) && h.indexOf("Date(") > -1) { i = new Date(parseInt(h.replace(/^\/Date((.*?))\/$/, "$1"))); /alert('if:' + i);/ } else { (h instanceof Date) ? i = h : i = b.datetime.parse({ value: h, format: f(g) }).toDate(); /alert('else:' + i);/ } var returnValue = "datetime'" + b.formatString("{0:yyyy-MM-ddTHH-mm-ss}", i) + "'"; /alert('returnValue=' + returnValue);/ return returnValue;} return h }

It works in my application. Please test !

Official solution can be found here : http://www.telerik.com/community/forums/aspnet-mvc/general/q2-2011-sp1.aspx

That works for the filtering, great !

• But after applying the filter I get an error: "Microsoft JScript runtime error: Object doesn't support this property or method" when changing page on the grid, Studio highlights this "var aY=ax.substr(aO).match(a0)". I belive it's in the the telerik.common.min.js