use of ' this() ' keyword in ctor design

[hazz]

will the third ctor in this class call the first two or just the null ctor?

public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this() { ... }
}

can I add an argument to this(str) and do the following so that ctor #3 does
call ctor#2 ?

public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this(str) { ... }
}

thank you, -greg

[Steve Willcock]

"hazz" <ha**@sonic.net> wrote in message
news:us**************@TK2MSFTNGP10.phx.gbl...

will the third ctor in this class call the first two or just the null ctor?
public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this() { ... }
}
It will just call the null constructor (public B())

can I add an argument to this(str) and do the following so that ctor #3 does call ctor#2 ?

public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this(str) { ... }
}

Yes, in this case, ctor #2 is executed first then ctor #3 is executed - ctor
#1 is not executed
thank you, -greg

[Mike Schilling]

"hazz" <ha**@sonic.net> wrote in message
news:us**************@TK2MSFTNGP10.phx.gbl...

will the third ctor in this class call the first two or just the null
ctor?

public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this() { ... }
this() calls only the constuctor with no arguments.
}

can I add an argument to this(str) and do the following so that ctor #3
does
call ctor#2 ?

public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this(str) { ... }
}

Yes, that's exactly how you do it.

[The Last Gunslinger]

hazz wrote:

will the third ctor in this class call the first two or just the null ctor?
It will call the one that matches the parameters you supplied, so the
zero param constructor.
public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this() { ... }
}

can I add an argument to this(str) and do the following so that ctor #3 does
call ctor#2 ?
Yes
public class B {
public B() { ... }
public B(string str) {.....}
public B(Token tkn, string str, int int_var) : this(str) { ... }
}

thank you, -greg

JB