Web.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
 
  
  <connectionStrings>
      <add name="Data_stu6" connectionString="DData Source=DESKTOP-78G78NM\SQLEXPRESS;Initial Catalog=Data_stu6;Integrated Security=True"
          providerName="System.Data.SqlClient" />
      <add name="Data_stu6ConnectionString" connectionString="Data Source=DESKTOP-78G78NM\SQLEXPRESS;Initial Catalog=Data_stu6;Integrated Security=True"
          providerName="System.Data.SqlClient" />
  </connectionStrings>

  <appSettings>
    <add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />
  </appSettings>

  <!--<system.codedom>
    <compilers>
      --><!--<compiler language="c#;cs;csharp" extension=".cs"
        type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701"/>
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb"
        type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        warningLevel=--><!--"4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
    </compilers>
  </system.codedom>-->




  <system.web>
    <sessionState timeout="20"></sessionState>
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.6.1"/>
    <httpRuntime targetFramework="4.6.1"/>
  </system.web>
 
</configuration>