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Osama Abbas

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Char literals in VB.net

I created a char variable in VB.net and needed to assign a single character to it.

Sounds simple doesn't it ?? Try doing it with Option Strict On

By default the following code will execute without problems :

      Dim charVariable as Char = "x"

Here we are assigning a string literal to a char variable. VB.net allows this as it performs type checking and casting at run-time. So the string literal "x" is automatically cast to char.

But with Option Strict On , strict type checking is performed at compile time and the code above will be highlighted as erroneous.

Now here comes to weird part, in C# you can write a char literal like so : 'x'

But you cant write a char literal like this in VB because the hyphen is used for comments.

So, as I found out , in order to assign a char literal to a char in VB.net, you need to append a format specifier to the literal like so :

        Dim charVariable as Char = "x"c

[Note the small c after the literal.]

This is the answer to the problem !!!

Posted: Thursday, January 11, 2007 4:50 AM by osama.abbas
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Comments

fahad said:

I knew it :)

# January 18, 2007 11:51 AM
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