KeyPress in Console Application

[hisheeraz]

Hello Friends;
I am making this basic programm in C# using concole application. My programm Prompth the user to enter a number (integer) within the range 0 - 100. up this point the programm is working fine.

but when the user enters some non numeric value the i start getting system error. is there possibly a way, syntex that can actually tell that user that Only Numerals ar allowed no other value can be added.

I have Tried System.Windows.Forms and it is not working...may be bacause im working on a console application.

So how can i display an error message on the console screen that only numeric value should be entered.

here is a lice of code...that prompts the user...

do // start of do while loop
                {
                    // start of if statement
                    if (Number < MinRange || Number > MaxRange)
                    {
                        Console.Write("\n Error - Number must be between " + MinRange + " - " + (MaxRange - 1));
                    }
                    // tell teh user how many tries left
                    Console.Write("\n Tries Left " + i);
                    // prompt the user to enter the number and try their luck
                    Console.Write("\n Enter your choice --> ");

                    // convers the value to integer and then save it to Number variable
                    Number = Convert.ToInt32(Console.ReadLine());
                } while (Number < MinRange || Number > MaxRange);// end while loop

could any one please help me with this ?

Thanks

§ Rented Lips §
----------------
Begning To Learn
----------------

 

[JurkMonkey]

why not just Console.Readline() and then check if the item is numeric before converting it. If it's not numeric - ask again.

private void IsNumeric(string val)
{
try
{
int i = Convert.ToInt32(val);

return true;
}
catch
{
return false;
}
}

 

[earthandfire]

... or if you are using 2005 then have a look at:

[tt]Integer.TryParse[/tt]


Hope this helps.

 

[JurkMonkey]

or just give up and go to java lol