{RESOLVED} Function output parameter ... ?

[Wen Lie]

Hello....

How should i return a value from a function parameter ?

if in old VB version, i use "byref" in declaring a procedure / function parameter.
e.g :

private sub Testing(byval str1 as string, byref str2 as string)
   str2 = str1 & "...just testing"
end sub

private sub command1_click()
   dim tmpStr as string
   
   call Testing("123", tmpstr)
   msgbox(tmpstr)
end sub

then the str2 will function as the output parameter.
How should I do that in C# ? and how should i return the value from that output parameter.... ?

Thanks,

[Shuja Ali]

The better way would be to have a function that has a return value.

private string Testing(string str1)
{
  return str1 + ".... just testing";
}

You can also use ref keyword to pass value types by reference, but here I would say just use a simple function that returns a value.

[Wen Lie]

Thanks.
I've tried and it works....

[Bombdrop]

you could also use out as followed;

	
	void Button1Click(object sender, EventArgs e)
		{
			string outPut;
			this.Test("THIS IS A TEST", out outPut);
			MessageBox.Show(outPut);
			          
		}
		
		void Test(string text, out string text2)
		{
			text2 = text + " Hello";	
		}

Hope this helps!!