how to solve the following error?

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hi,

Can anyone know how to solve this error?

Error	4	The type 'System.Web.UI.UpdatePanel' exists in both 'c:\Windows\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll' and 'c:\Windows\assembly\GAC_MSIL\System.Web.Extensions\1.0.61025.0__31bf3856ad364e35\System.Web.Extensions.dll'	c:\Users\MAR10039\AppData\Local\Temp\Temporary ASP.NET Files\marlenjobs\5b4bbd79\61329457\App_Web_fa3qbcsm.20.cs	853

code:

<br />
  [System.Diagnostics.DebuggerNonUserCodeAttribute()]<br />
        private global::System.Web.UI.UpdatePanel @__BuildControlup1() {<br />
            global::System.Web.UI.UpdatePanel @__ctrl;<br />
            <br />
            #line 156 "C:\Users\MAR10039\Desktop\marlenjobs\userside\register.aspx"<br />
            @__ctrl = new global::System.Web.UI.UpdatePanel();<br />
            <br />
            #line default<br />
            #line hidden<br />
            this.up1 = @__ctrl;<br />
            <br />
            #line 156 "C:\Users\MAR10039\Desktop\marlenjobs\userside\register.aspx"<br />
            @__ctrl.ContentTemplate = new System.Web.UI.CompiledTemplateBuilder(new System.Web.UI.BuildTemplateMethod(this.@__BuildControl__control5));<br />
            <br />
            #line default<br />
            #line hidden<br />
            <br />
            #line 156 "C:\Users\MAR10039\Desktop\marlenjobs\userside\register.aspx"<br />
            @__ctrl.ID = "up1";<br />
            <br />
            #line default<br />
            #line hidden<br />
            <br />
            #line 156 "C:\Users\MAR10039\Desktop\marlenjobs\userside\register.aspx"<br />
            @__ctrl.Visible = false;<br />
            <br />
            #line default<br />
            #line hidden<br />
            return @__ctrl;<br />
        }

Posted 9-Mar-12 23:16pm

sathiyak

Updated 10-Mar-12 5:19am

Uday P.Singh

v5

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Ganesan Senthilvel · Answer 1 · 2012-03-10T04:35:00

Add the below tags in the web.config before the end tag </configuration> as:

XML

<runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
            </dependentAssembly>
        </assemblyBinding>
    </runtime>