Does C# support CallByName?

[xcduan]

Hi there,

VB supports CallByName. Does C# support that? How?

Please help me out, or I have to write a bunch of ugly switch--case sentences.

Thanks.

Neo

 

[chiph]

You can do an Assembly.Load (in System.Reflection). There are about 6 or 7 overloads available, some only need the assembly name, others can load from a COFF image.

Chip H.

 

[xcduan]

Thanks a lot

What if I don't want to use assembly? I mean if the caller is in the same program as the function to be called.

For example, there is a function called F1() in the same class as the function Main(). What I want do is to let Main() get a function name ("F1&quot from the standard input and invoke the function.

Any suggestion?

 

[chiph]

In that case you'd use the CreateInstance method. Be aware that the type name is case-sensitive.

Chip H.

 

[xcduan]

Bingo!

Thanks, man.

I would like to attach my code here to share with other C# dudes.

//Assume we have a function Test() to call by name.
string FunctionName="Test";
Type t=this.GetType();
MethodInfo mi=t.GetMethod(FunctionName);
if (mi!=null)
mi.Invoke(this, null);
else
MessageBox.Show("Wrong Function Name"

 

[chiph]

xcduan -

Thanks for posting your find.

If you get time, could you write it up as a FAQ? It sounds like the kind of thing that other people in the future will be asking.

Chip H.

 

[xcduan]

Thanks for your advice.

It's done. Sorry I posted it twice by mistake

 

[chiph]

Thanks!

Your example looks very good.

Chip H.