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Difference between Convert.tostring() and .tostring()
Hi
Carrying on from this question What is the difference between Convert and Parse?
Here are two lines of code.
Convert.ToString(myObject);
myObject.ToString();
My question is what is the difference and which would be best to use?
Thank you in advance.
336
Casting is changing the type of the variable. Parsing is 'examining' the string and assigning its logical value to some variable.
Parse and Convert ToInt32 are two methods to convert a string to an integer. The main difference between int Parse and Convert ToInt32 in C# is that passing a null value to int Parse will throw an ArgumentNullException while passing a null value to Convert ToInt32 will give zero.
Casting means taking a variable of one type and turning it to another type. There are obviously some combinations which can be cast, and some which cannot. Parsing means reading text and deciding what the different parts of it mean.
The basic difference between them is Convert function handles NULLs while i.ToString()
does not. It will throw a NULL reference exception error. So, as good coding practice using
Convert is always safe.
161
myObject.ToString() could throw a NullReferenceException, where Convert.ToString will never do that.
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