crystal report for visual studio 2015 / dot net framework 4.6

just copy existing framework folder in aspnet_client\system_web folder and the rename it to 4_81 or whatever version you have installed and your are done
To Check your version click here
http://w3dproblems.dcense.com/2015/09/what-net-version-are-you-running-20-45.html

Binding to Navigation Property causes “ A field or property with the name 'X.X' was not found on the selected data source”

Replace asp:BoundField to asp:TemplateField

Visual Studio 2012, 2013, 2015 and ASP.NET Web Configuration Tool

Run this command in console(cmd)
"C:\Program Files\IIS Express\iisexpress.exe" /path:c:\windows\Microsoft.NET\Framework\v4.0.30319\ASP.NETWebAdminFiles /vpath:"/asp.netwebadminfiles" /port:8089 /clr:4.0 /ntlm
Than open your browser and open this url http://localhost:8089/asp.netwebadminfiles/default.aspx?applicationPhysicalPath=[Exact_Project_Path]\&applicationUrl=/ 
Also make sure you have this connection string in your web.config file

<connectionStrings>
    <clear/>
    <add name="LocalSQLServer" connectionString="......." providerName="System.Data.SqlClient"/>
  </connectionStrings>

<clear> is important

LINQ: SqlDateTime overflow. Must be between ...

WHEN a NULL value to passed to a non null datetime field using LINQ datasource. If the field is autogenerated make sure to mark as autogenerated in LINQ DBML designer else pass the value using a parameter

Get all asp net listview items in array

var rows = [];
$('#<%: lvStudents.ClientID %>_itemPlaceholderContainer tr:gt(1)').each(function (i, v) {
    var row = $(this);
    rows.push(row);
});

if InsertItemPosition="LastItem"
gt(1)
else if InsertItemPosition="FirstItem" 
gt(2)