Csharp/C Sharp by API/System/Exception

Exception.HelpLink

<source lang="csharp"> using System;

class MainClass {

 public static void Main() {  
 
   try {  
       int[] nums = new int[4];  
    
       Console.WriteLine("Before exception is generated."); 
    
       // Generate an index out-of-bounds exception. 
       for(int i=0; i < 10; i++) { 
           nums[i] = i; 
       } 
   }  
   catch (IndexOutOfRangeException exc) {  
     Console.WriteLine("Standard message is: "); 
     Console.WriteLine(exc); // calls ToString() 
     Console.WriteLine("Stack trace: " + exc.StackTrace); 
     Console.WriteLine("Message: " + exc.Message); 
     Console.WriteLine("TargetSite: " + exc.TargetSite); 
     Console.WriteLine("Class defining member: {0}", exc.TargetSite.DeclaringType);
     Console.WriteLine("Member type: {0}", exc.TargetSite.MemberType);
     Console.WriteLine("Source: {0}", exc.Source);
     Console.WriteLine("Help Link: {0}", exc.HelpLink);
     
   }  
   Console.WriteLine("After catch statement.");  
 }  

}

 </source>

Exception.Source

<source lang="csharp"> using System;

class MainClass {

 public static void Main() {  
 
   try {  
       int[] nums = new int[4];  
    
       Console.WriteLine("Before exception is generated."); 
    
       // Generate an index out-of-bounds exception. 
       for(int i=0; i < 10; i++) { 
           nums[i] = i; 
       } 
   }  
   catch (IndexOutOfRangeException exc) {  
     Console.WriteLine("Standard message is: "); 
     Console.WriteLine(exc); // calls ToString() 
     Console.WriteLine("Stack trace: " + exc.StackTrace); 
     Console.WriteLine("Message: " + exc.Message); 
     Console.WriteLine("TargetSite: " + exc.TargetSite); 
     Console.WriteLine("Class defining member: {0}", exc.TargetSite.DeclaringType);
     Console.WriteLine("Member type: {0}", exc.TargetSite.MemberType);
     Console.WriteLine("Source: {0}", exc.Source);
     Console.WriteLine("Help Link: {0}", exc.HelpLink);
     
   }  
   Console.WriteLine("After catch statement.");  
 }  

}

 </source>

Exception.TargetSite

<source lang="csharp"> using System;

class MainClass {

 public static void Main() {  
 
   try {  
       int[] nums = new int[4];  
    
       Console.WriteLine("Before exception is generated."); 
    
       // Generate an index out-of-bounds exception. 
       for(int i=0; i < 10; i++) { 
           nums[i] = i; 
       } 
   }  
   catch (IndexOutOfRangeException exc) {  
     Console.WriteLine("Standard message is: "); 
     Console.WriteLine(exc); // calls ToString() 
     Console.WriteLine("Stack trace: " + exc.StackTrace); 
     Console.WriteLine("Message: " + exc.Message); 
     Console.WriteLine("TargetSite: " + exc.TargetSite); 
     Console.WriteLine("Class defining member: {0}", exc.TargetSite.DeclaringType);
     Console.WriteLine("Member type: {0}", exc.TargetSite.MemberType);
     Console.WriteLine("Source: {0}", exc.Source);
     Console.WriteLine("Help Link: {0}", exc.HelpLink);
     
   }  
   Console.WriteLine("After catch statement.");  
 }  

}

 </source>

extends Exception

<source lang="csharp">

using System; using System.Runtime.Serialization; [Serializable] public sealed class MyException : Exception {

   private string stringInfo;
   private bool booleanInfo;
   public MyException() : base() { }
   public MyException(string message) : base(message) { }
   public MyException(string message, Exception inner): base(message, inner) { }
   private MyException(SerializationInfo info, StreamingContext context) : base(info, context)
   {
       stringInfo = info.GetString("StringInfo");
       booleanInfo = info.GetBoolean("BooleanInfo");
   }
   public MyException(string message, string stringInfo, bool booleanInfo) : this(message)
   {
       this.stringInfo = stringInfo;
       this.booleanInfo = booleanInfo;
   }
   public MyException(string message, Exception inner, string stringInfo, bool booleanInfo): this(message, inner)
   {
       this.stringInfo = stringInfo;
       this.booleanInfo = booleanInfo;
   }
   public string StringInfo
   {
       get { return stringInfo; }
   }
   public bool BooleanInfo
   {
       get { return booleanInfo; }
   }
   public override void GetObjectData(SerializationInfo info, StreamingContext context)
   {
       info.AddValue("StringInfo", stringInfo);
       info.AddValue("BooleanInfo", booleanInfo);
       base.GetObjectData(info, context);
   }
   public override string Message
   {
       get
       {
           string message = base.Message;
           if (stringInfo != null)
           {
               message += Environment.NewLine + stringInfo + " = " + booleanInfo;
           }
           return message;
       }
   }

} public class MainClass {

   public static void Main()
   {
       try
       {
           throw new MyException("Some error", "SomeCustomMessage", true);
       } 
       catch (MyException ex)
       {
           Console.WriteLine(ex.Message);
           Console.WriteLine(ex.BooleanInfo);
           Console.WriteLine(ex.StringInfo);
       }
   }

}

 </source>