Hello World Problem

[mkohl]

I know this is a simplex problem, but I can't figure this out. This is my first C# console program and it crashes at runtime.

I went thru all the code, that was in my book and did not find the error.

Error: Index out of range.
The error points to:
int iChoice = int.Parse(args[0]);

'code
class Greetings {
public static void DisplayEnglish() {
Console.WriteLine("Hello, world!");
}
public static void DisplayItalian() {
Console.WriteLine("Ciao, mondo!");
}
public static void DisplaySpanish() {
Console.WriteLine("Hola, imundo!");
}
}
delegate void delGreetings();
class HelloWorld {
static void Main(string [] args) {
int iChoice = int.Parse(args[0]);
delGreetings[] arrayofGreetings ={
new delGreetings(Greetings.DisplayEnglish),
new delGreetings(Greetings.DisplayItalian),
new delGreetings(Greetings.DisplaySpanish)};
arrayofGreetings[iChoice - 1]();
}
}

 

[phinoppix]

Are you running your project from the IDE? If so, did you set the command line parameter (a number) before running?

Check on Project/Properties for command-line parameters.

 

[mkohl]

yes I am running it from the IDE. It was my assumition that I set the param at run time at the command prompt in the console.

 

[JurkMonkey]

no.

The arguments come from the initial call to your program.

In a dos console you would type

C:\>yourapplication.exe 100

and your first string in your arguments would be 100.

If you are looking to read a number from the console during runtime, then you want:

Console.Write("Enter A Number: ");
Console.ReadLine(); //and grab your integer value here

 

[chiph]

Pull up the properties for your project (right-click on the project in solution explorer) and go to the debugging tab. Enter your command-line value in the command-line entry.

Chip H.


____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first