well, [defaultValue] is not for setting initialize value for an object, it just change appearance of the property in design time,

[DefaultValue("hello")]
public string txt{get;set}

now in design time when you change the text of this property it would be bold text! for ur purpose u should define ur property as this:

private string _txt="Hello"; /// ur initialize value!!!
public string txt
{
get
{
return _txt;
}
set
{
_txt=value;
}
}

thanx for ur answer! u mean there isn't any way to add serial number to software? could u explain how obfuscate my code?

hi, as i told in recent post, i need to a way to place generated serial number into my application. but i build my application using msbuild, bcoz of dynammic build i cant change the source code to place serial number in it, is there any way to place serial number of software without changing source code manually??? or a way to define serial of software? note: I need this serial number to be checked in my hardlock validation routine!

thank you, msbuild has no config for define purpose,has it? please type an example