How to set webconfig for assembly reference

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MY webconfig File.....
And the the two namespace who send error...(Error 2 The type or namespace name 'Linq' does not exist in the namespace 'System.Xml' (are you missing an assembly reference?) D:\Hospital\Three Layer Application - Entities\Web\Billing\OutPatientBill.aspx.cs
)
using System.Linq;
using System.Xml.Linq;
how to add assembly reference

XML

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>

  <connectionStrings>
    <add name="conn" connectionString="Data Source=ABCD;Initial Catalog=briefsof_medical;User ID=medical_01;Password=medical@123;" />
  </connectionStrings>
  <system.web>
    <compilation debug="true">
      <assemblies>
        <add assembly="System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

      </assemblies>
    </compilation>
    <!--<customErrors mode="RemoteOnly" defaultRedirect="~/Default.aspx"/>-->
    <authentication mode="Windows"/>

    <pages controlRenderingCompatibilityVersion="3.5"/>

    <customErrors mode="Off"/>
  </system.web>
</configuration

Posted 10-Nov-13 21:38pm

Parmendra choudhary

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Comments

JoCodes 11-Nov-13 4:57am

Have you checked your targetframework is set to 3.5 framework/?

Parmendra choudhary 11-Nov-13 6:58am

thanks u sir.............

JoCodes 11-Nov-13 13:20pm

Welcome ...:)

3 solutions

Solution 1

Right click on the project, select add reference and choose these two dlls from the appropriate location.

Posted 10-Nov-13 21:49pm

Abhinav S

Comments

Parmendra choudhary 11-Nov-13 4:11am

same problem

Solution 2

All thing written in web.config file are for run time. Meaning used by IIS and your web application. Visual Studio and it's compiler don't used them (except for intellisense). For compile time using of any assembly you must add reference to it using the IDE (Project->Right Click->Add Reference).

See here http://msdn.microsoft.com/en-us/library/s10awwz0(v=vs.85).aspx[^]

This article states that the assembly elements are used during compilation of ASP.NET that phase done in the IIS just before serving your page as a response...

Posted 10-Nov-13 22:06pm

Kornfeld Eliyahu Peter

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Parmendra choudhary · Accepted Answer · 2013-11-11T00:49:00

Solution 3

Its a version Error. my code is in 4.0 and server set 2.0

Posted 11-Nov-13 0:49am

Parmendra choudhary