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c#asp.net.netexceptiontry-catch
user2037696
user2037696

Reputation: 1105

Handling exceptions in asp .net

Is there a better way for handling exceptions ? Can I do the same thing but only with one try catch ?

Do I need to create my own exceptions class ?

try
{
   firstname = bd["firstname"].ToString();
}
catch (KeyNotFoundException fe)
{
   firstname = null;
}

try
{
   lastname = bd["lastname"].ToString();
}
catch (KeyNotFoundException fe)
{
   lastname = null;
}

try
{
   phone = bd["phone"].ToString();
}
catch (KeyNotFoundException fe)
{
   phone = null;
}

...
...

Upvotes: 2

Views: 98

Answers (3)

Rajneek
Rajneek

Reputation: 11

firstname = Convert.ToString( bd["firstname"]);

lastname = Convert.ToString( bd["lastname"]);

phone = Convert.ToString(bd["phone"]);

Try Convert.ToString("string Value") method instend of .ToString() to avoid Exception.

Upvotes: 1

C Sharper
C Sharper

Reputation: 8646

If you want to use try catch blocks with minimum overhead, You can write all the code in one try block and write multiple catch blocks.

try
{
   firstname = bd["firstname"].ToString();
   lastname = bd["lastname"].ToString();
   phone = bd["phone"].ToString();
}
catch (KeyNotFoundException fe)
{
   firstname = null;
}

catch (KeyNotFoundException ex)
{
   lastname = null;
}


catch (KeyNotFoundException xe)
{
   phone = null;
}

Upvotes: 0

Tim Schmelter
Tim Schmelter

Reputation: 460340

Do not use exceptions for normal program flow if possible:

firstname = bd.ContainsKey("firstname") ? bd["firstname"] : null;
lastname = bd.ContainsKey("lastname") ? bd["lastname"] : null;
phone = bd.ContainsKey("phone") ? bd["phone"] : null;

or (assuming you are accessing a Dictionary):

bd.TryGetValue("firstname", out firstname);
bd.TryGetValue("lastname", out lastname);
bd.TryGetValue("phone", out phone);

Upvotes: 5

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