How to get values from connection string settings section?

Suppose we have

<connectionStrings>     
 <add name="LogDbConnectionString" connectionString="user id=se_user;pwd=se_user_pw!;data source=iisdevdb1.int\iisdevdb1,1515;initial catalog=mydb;"
      providerName="System.Data.SqlClient" />   
</connectionStrings> 

To get the value from "LogDbConnectionString", let us write the below code

public static string GetConfigConnectionString(string configKey)
 {
   try
   {
      return System.Configuration.ConfigurationManager.ConnectionStrings[configKey].ToString();
    }
   catch (Exception ex)
   {
       return string.Empty;
    }
 }

Use it : GetConfigConnectionString("LogDbConnectionString");