Pls help me for my try & catch block

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1.00/5 (2 votes)

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Dear Developers,
This is my basic try and catch block

try
{
some code..
}
catch(exception ex)
{
label1.text=ex.Message;
}

it works fine and display the respective exceptions, But as per my requirement
for Example-- "Violation of UNIQUE KEY constraint 'unique_User'. Cannot insert duplicate key in object 'dbo.UserDetails'. The statement has been terminated"
then i want to print my own message as"user name already exists"
How to obtain this..
Any answers ll be appreciated...
Thanku

Posted 21-Mar-12 1:12am

The Doer

Updated 21-Mar-12 3:33am

v2

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Bojjaiah · Answer 1 · 2012-03-21T03:43:00

Solution 5

read this articale

i hope you will get full information about try catch

Using Try... Catch..., Finally![^]

Posted 21-Mar-12 3:43am

Bojjaiah

Updated 21-Mar-12 3:48am

v2

nagendrathecoder · Answer 2 · 2012-03-21T01:40:00

Solution 3

Create Custom Exceptions as per your requirements.

Check below links on how to create custom exceptions.
First[^]

Second[^]

Third[^]

Posted 21-Mar-12 1:40am

nagendrathecoder

Updated 21-Mar-12 1:41am

v2

Comments

The Doer 21-Mar-12 7:57am

even i can use like this,
catch (SqlException ex )
But Sql Exception can itself contain many more exceptions, so how to address any specified one there..??

nagendrathecoder 21-Mar-12 8:40am

I would say why wait for the exceptions.....handle validations.

Mohamed Mitwalli · Answer 3 · 2012-03-21T02:09:00

u can have more than one Exception like one for IO another for SQL and so on .

C#

try
{
some code..
}
catch(exception ex)
{
   label1.text=ex.Message;
}
catch(exception ex)
{
   label1.text=ex.Message;
}
catch(exception ex)
{
   label1.text=ex.Message;
}
catch(exception ex)
{
   label1.text=ex.Message;
}

pietvredeveld · Answer 4 · 2012-03-21T01:31:00

Solution 1

Hi,

Insert between the try and the catch a new catch block for a DivideByZeroException.

try
{
some code..
}
catch(DivideByZeroException)
{
   Label1.Text = "You devided by zero";
}
catch(Exception ex)
{
   label1.text=ex.Message;
}

Piet

Posted 21-Mar-12 1:31am

pietvredeveld

Comments

The Doer 21-Mar-12 7:59am

my exception is---
Violation of UNIQUE KEY constraint 'unique_User'. Cannot insert duplicate key in object 'dbo.UserDetails'. The statement has been terminated

how can i address this ?? if i want to print the message as 'User already exists"

Kiirrii · Answer 5 · 2012-03-21T01:34:00

Solution 2

just use catch{} and print your own message,...

Posted 21-Mar-12 1:34am

Kiirrii

Comments

nagendrathecoder 21-Mar-12 7:46am

This way same message will be displayed for all exceptions.

Pls help me for my try & catch block

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