CODEWITHSUNDEEP
c#try-catch
S M
S M

Reputation: 3233

try-catch in method having return object T

I have a method in c#, in which it return an object! I need to use a try catch here

this is my method

public T FromBinary()
{
    T obj;
    try
    {
        using (Stream stream = File.Open(this.serializeFilePath, FileMode.Open))
        {
            var binaryFormatter = new BinaryFormatter();
            obj=(T)binaryFormatter.Deserialize(stream);
        }
    }
    catch (Exception e)
    {
        EventLog.WriteEntry("Cannot convert Binary to object", e.Message + "Trace" + e.StackTrace);
    }
    return obj;
}

But i am getting an error

Use of unassigned local variable 'obj'.

How can I use try catch in method having return object T?

Upvotes: 3

Views: 677

Answers (3)

Byyo
Byyo

Reputation: 2243

you have to write T obj = default(T); to assign the variable with a initial value

Upvotes: 4

pål-jørgen valdersnes
pål-jørgen valdersnes

Reputation: 83

The error occurs because you are trying to let your method return the object before it has been assigned a value(if the code throws an exception).

the solution is to set your declaration to:

T obj = Default(T);

You should also make it a try-catch-finally so that you allways return the object and close the file stream like this:

}//end of catch block
finnally{
stream.Close();
return obj;
}
}//end of method

Upvotes: 0

diiN__________
diiN__________

Reputation: 7656

Change it to T obj = default(T);.

Upvotes: 7

Related Questions