<asp:Button ID="BtnSubmit" runat="server" Text="修改" OnClick="BtnSubmit_Click" OnClientClick="return formSubmit('true');" />

<script type="text/javascript">

                function formSubmit(val) {

                    if (val== "true")

                    {

                        form1.submit();

                    } else {

                        return false;

                    }

                }

            </script>

提供者選項中 'compilerVersion' 屬性的值必須是 'v4.0' 以上 (如果要針對 4.0 版以後的 .NET Framework 編譯)。若要針對 3.5 (含) 以後版本的 .NET Framework 編譯這個 Web 應用程式，請從 Web.config 檔案的 <compilation> 項目移除 'targetFramework' 屬性。

<system.codedom>

    <compilers>

     <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CSharp.CSharpCodeProvider,System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

        <providerOption name="CompilerVersion" value="v4.0"/>

        <providerOption name="WarnAsError" value="false"/>

     </compiler>

     <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

        <providerOption name="CompilerVersion" value="v4.0"/>

        <providerOption name="OptionInfer" value="true"/>

        <providerOption name="WarnAsError" value="false"/>

     </compiler>

    </compilers>

</system.codedom>

<system.web>

    <compilation targetFramework="4.0" />

</system.web>