try/catch compilation warning

[ChrisB]

Hello:

I notice that the following statements generate a "the variable 'e' is
declared but never used" warning:

try
{
Company.Fetch(CompanyID);
}
catch(RecordNotFoundException e)
{
return null;
}

I have no reason to use the variable e within my catch block and find this
warning annoying (my code is generating many such warnings). Is there a
commonly used way to avoid a compilation warning in this situation?

Thanks,
Chris

 

[C# Learner]

[...]
I have no reason to use the variable e within my catch block and find this
warning annoying (my code is generating many such warnings). Is there a
commonly used way to avoid a compilation warning in this situation?

In that case, use the following to simply filter the exception.

try
{
Company.Fetch(CompanyID);
}
catch(RecordNotFoundException)
{
return null;
}

 

[Morten Wennevik]

Hi ChrisB,

Sure is, change your catch block to

catch
{
return null;
}

Happy coding!
Morten Wennevik [C# MVP]

 

[Jon Skeet [C# MVP]]

I notice that the following statements generate a "the variable 'e' is
declared but never used" warning:

try
{
Company.Fetch(CompanyID);
}
catch(RecordNotFoundException e)
{
return null;
}

I have no reason to use the variable e within my catch block and find this
warning annoying (my code is generating many such warnings). Is there a
commonly used way to avoid a compilation warning in this situation?

Yes - don't declare the variable:

catch (RecordNotFoundException)
{
return null;
}

 

[Jon Skeet [C# MVP]]

Sure is, change your catch block to

catch
{
return null;
}

That then catches *all* exceptions, however, which may very well not be
what is wanted.

 

[ChrisB]

Simple enough. Thanks!

[...]
I have no reason to use the variable e within my catch block and find this
warning annoying (my code is generating many such warnings). Is there a
commonly used way to avoid a compilation warning in this situation?

In that case, use the following to simply filter the exception.

try
{
Company.Fetch(CompanyID);
}
catch(RecordNotFoundException)
{
return null;
}

 

[Uri Dor]

catch(RecordNotFoundException)

 

[Morten Wennevik]

Good point

Happy coding!
Morten Wennevik [C# MVP]