This does what you described, but probably not what you expect...:
static string GetDefaultValueString(string typeName)
{
Type t = Type.GetType(typeName);
object o = Activator.CreateInstance(t);
return o.ToString();
}
Why do I say it won't do what you expect? Well here's my test code:
Console.WriteLine(GetDefaultValueString("System.In t32"));
Console.WriteLine(GetDefaultValueString("System.Bo olean"));
and this prints out:
0
False
Note that I'm using the real names of the types here. You said:
I have string s = "int";
That's not the name of the type. That's the name of an alias C# happens to
use as a shorthand for System.Int32.
The only mechanism I'm aware of for mapping from one of these C# aliases to
the real type name is the C# compiler itself! You could use the codedom to
do this, but it's rather heavyweight - a much simpler solution would just be
to have a hard-coded list for all these types.
Do you really need to use the C#-specific aliases for these system types?
Also, note that the default value of Boolean prints out as "True" not
"true", so again that's not valid C#. So this might not do what you
require. What exactly are you trying to achieve?
--
Ian Griffiths - http://www.interact-sw.co.uk/iangblog/
DevelopMentor - http://www.develop.com/
"Champika Nirosh" <te**@test.lk> wrote:
I have the string value of the System types.. now I need to get the
default
value for that system type..
I have string s = "int";
not I need string sd = "0";
sd is the default for the int type..
same way is it is a bool then default value should be "false"
How can I do this..
