Validate Checkboxlist in ASP.NET 

 function ValidateChkList(source, arguments) {
        arguments.IsValid = IsCheckBoxChecked() ? true : false;
 
    }
 
    function IsCheckBoxChecked() {
        var isChecked = false;
        var list = document.getElementById('<%= chkAuthorAdd.ClientID %>');
        var Checkbox = list.getElementsByTagName("input");
        for (var j = 0; j < Checkbox.length; j++) {
            if (Checkbox[j].checked) {
                isChecked = true;
            }
        }
        return isChecked;
 
    }

 asp:CheckBoxList ID="chkAuthorAdd" runat="server" CssClass="chkbox" RepeatColumns="2"
                                        RepeatDirection="Horizontal" RepeatLayout="Table" /> 

  <asp:CustomValidator ID="cvAuthor" runat="server" ForeColor="Red"  

ValidationGroup="WhitePaperDetails"  ClientValidationFunction="ValidateChkList">

 Please select Author.</asp:CustomValidator>

Dump Exception in to SQL Server using log4net

1) First create table named "Log" into database

CREATE TABLE [dbo].[Log] (
[Id] [int] IDENTITY (1, 1) NOT NULL,
[Date] [datetime] NOT NULL,
[Thread] [varchar] (255) NOT NULL,
[Level] [varchar] (50) NOT NULL,
[Logger] [varchar] (255) NOT NULL,
[Message] [varchar] (4000) NOT NULL,
[Exception] [varchar] (2000) NULL
)

2) Add below code in Gobal.asax

 void Application_Start(object sender, EventArgs e)
        {
            // Code that runs on application startup
            log4net.Config.DOMConfigurator.Configure();
        }

 

3) Add below code in web.config

<configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>

 

4) Add below code in web.config after <system.webserver>

 <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="1" />
      <connectionType value="System.Data.SqlClient.SqlConnection, System.Data,

               Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      <connectionString value="Data Source=My Source;Initial Catalog=Employee;

       Persist Security Info=True;User ID=sa;Password=server" />
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],

    [Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
      <parameter>
        <parameterName value="@log_date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@log_level" />
        <dbType value="String" />
        <size value="50" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="4000" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@exception" />
        <dbType value="String" />
        <size value="2000" />
        <layout type="log4net.Layout.ExceptionLayout" >
          <conversionPattern value="%exception" />
        </layout>
      </parameter>
    </appender>
    <root>
      <appender-ref ref="AdoNetAppender" />
    </root>