C # 's throw exception handling statement

The throw statement is used to emit a signal that an anomalous condition (exception) occurs during program execution. Throw statements are often used in conjunction with Try-catch or try-finally statements. You can use the throw statement to explicitly throw an exception, where a custom exception is thrown. Creating user-defined exceptions, a good encoding method is to "Exception" as the end of the user-defined exception class name.

Use of the example throw statement

This example derives a new exception class useremployeeexception with exception, which defines 3 constructors, each using a different parameter, and then throwing a custom exception. The program code is as follows.

 using System; 
 using System.Collections.Generic; 
 using System.Text; 
 using System.IO; 
 Namespace Clsuserexecption 
 {
 Class program 
 {
 public class useremployeeexception:exception< br> {
 private string errorinfo=string. Empty; 
 Public useremployeeexception () 
 {
} 
 Public Useremployeeexc              Eption (String message): Base (Message) 
 {
 ErrorInfo = message; 
              
 
 Public useremployeeexception (String message, Exception 
 Inner): Base (Message,inner) 
 {
 ErrorInfo = message; 
 inner = null;                 
} 
} 
 public static void Main () 
 {
 Try 
 {
 throw new Useremployeeexception ("Error Info of Use");            
} 
 catch (useremployeeexception ey) 
{
 Console.WriteLine ("Output is:"); 
 Console.WriteLine (EY. Message,ey. innerexception); 
 Console.read (); 
} 
} 
} 
}