methods as parameters

Hi
  Is it possible to use a method as a parameter in C# or VB.NET?


static string s ()
{
    return "s";
}

static void m (s m)
{
    manupulateresultofmethods();
}

=======================

One applicaiton is to use Regex, as parameter


static void (regex m, regex s)
{}

So you can do input check, and the call to the method would fail, if the parameter regex match is false.

Do you get what I am saying? Is this possbile in C#?

Matthew van Eerde wrote:

See delegates

EDIT: in C# 2.0, these can be anonymous

Thanks for your reply.

What I am trying to do is simple. To validate imput at the method parameter level.

So suppose you have a new registration form. You want to validate input to guard aganst SQL injection.

instead of running it through a method. I just wish to give the method the input. If the parameter is correct, (match a regex parameter) then call method, else throw exception >> calling error

So void method (regex r, otherparameters)

the r would be accepted only if it match the regex expression. without need to write a method to validate the stuff.

If there is such capacity in C# , can you demonstrate a simple example, so as to help me understand?

Thanks again.

If you are just using regex to prevent SQL injection (ie stings like " ' or 1=1;-- " etc) then just use Parameterized queries which are already safe from sql injection attacks.

maybe im missing what you are getting at.

PolymorphicCode wrote:

Hi
  Is it possible to use a method as a parameter in C# or VB.NET?


static string s ()
{
    return "s";
}

static void m (s m)
{
    manupulateresultofmethods();
}

=======================

One applicaiton is to use Regex, as parameter


static void (regex m, regex s)
{}

So you can do input check, and the call to the method would fail, if the parameter regex match is false.

Do you get what I am saying? Is this possbile in C#?

Would something like this work?  Or are you trying to do something like new ThreadStart(method) or simply wanting a return Method()?  

private string m {
set { name=value; }
get { return name; }
}