Does anyone have a sample code that prevents a user from entering a negative number and a number greater than 100 by displaying a message telling them to enter a positive number and a number less than 100?

What kind of message are you looking for? and What kind of application is this? WinForm? WebForm? Console app?

I can easily provide a solution, just looking for a little more info.

Eric Maino
GVSU Microsoft SA

: What kind of message are you looking for? and What kind of application is this? WinForm? WebForm? Console app?
:
: I can easily provide a solution, just looking for a little more info.
:
: Eric Maino
: GVSU Microsoft SA
:
:

Ok I'm kinda new with C# below is exactly what my code looks like and it uses Console App


using System;
using System.Windows.Forms;
class Week05
{
static void Main(string[] args)
{

char Grade;
string Response;
string Name;

Console.WriteLine("\n\nGreetings and welcome to MIS225 - Week 5\n\n\n");

do
{


Console.Write("\n\nEnter student name: ");
Name = Console.ReadLine();


Grade = CalcStudentGrade();
Console.WriteLine("{1}, your grade is {0}", Grade, Name);

Console.Write("Enter scores for another student? ");
Response = Console.ReadLine();

Response = Response.ToUpper();


} while (Response == "YES");

Console.WriteLine("\n\n\nThanks for using the program. See you next week!");

}



//---------------------------------------------------------
//
// CalcStudentGrade Input : Nothing
// Output: char Grade
//
//---------------------------------------------------------
static char CalcStudentGrade()
{

string Response;
float Score;
float Total;
int Count;
float Average;


Count = 0;
Total = 0;

Response = "";
do
{


Score = GetScore(Count);

Total += Score;
Count++;

Console.Write("Enter another score? ");
Response = Console.ReadLine();

Response = Response.ToUpper();

} while (Response == "YES");


Console.WriteLine("\n\n\n");

Average = Total / Count;

return GetGrade(Average);


}



//---------------------------------------------------------
//
// GetScore Input : int Count (Score Number for prompt)
// Output: float Score (Between -1 and 100)
//
//---------------------------------------------------------
static float GetScore(int Count)
{

string T;

Console.Write("Enter score number {0}: ", Count + 1);
T = Console.ReadLine();
return float.Parse(T);

//if (int.Parse(T)<1)
//{
//MessageBox.Show("The Number entered must not be a negative number or above 100. Please try again");
//Environment.Exit(0);

// }





}




//---------------------------------------------------------
//
// GetGrade Input : float Average
// Output: char Grade
//
//---------------------------------------------------------
static char GetGrade(float A)
{

char G;

if (A >= 90)
G = 'A';
else if (A >= 80)
G = 'B';
else if (A >= 70)
G = 'C';
else if (A >= 60)
G = 'D';
else
G = 'E';

return G;

}

}

So I just wanted to set a limit on the score to be entered so not to be negative number or above 100
Thanks for your help

I have edited your GetScore method, to make it recursive. It will now only allow you to enter a score between 0 and 100 and it also double checks that you are entering a number. I hope this code points you in the right direction. It may not be exactly what you are looking for but I really hope it helps.

static float GetScore(int Count) 
{ 
	string T; 

	Console.Write("Enter score number {0}: ", Count + 1); 
	T = Console.ReadLine();
	
	try 
	{
		float s = float.Parse(T);
		if (s < 0 || s > 100) 
		{
			Console.Write("\nI am sorry but you have entered an incorrect score.\nPlease enter a score between 0 and 100.\n\n");
			return GetScore(Count--);
		}
		else 
			return s;
	}
	catch (Exception e) 
	{
		Console.WriteLine("\nI am sorry but you have not entered a proper value\n");
		return GetScore(Count --);
	}
}

Eric Maino
GVSU Microsoft SA

This message was edited by uchetex at 2003-9-30 8:28:47

---

: I have edited your GetScore method, to make it recursive. It will now only allow you to enter a score between 0 and 100 and it also double checks that you are entering a number. I hope this code points you in the right direction. It may not be exactly what you are looking for but I really hope it helps.
:

: static float GetScore(int Count) 
: { 
: 	string T; 
: 
: 	Console.Write("Enter score number {0}: ", Count + 1); 
: 	T = Console.ReadLine();
: 	
: 	try 
: 	{
: 		float s = float.Parse(T);
: 		if (s < 0 || s > 100) 
: 		{
: 			Console.Write("\nI am sorry but you have entered an incorrect score.\nPlease enter a score between 0 and 100.\n\n");
: 			return GetScore(Count--);
: 		}
: 		else 
: 			return s;
: 	}
: 	catch (Exception e) 
: 	{
: 		Console.WriteLine("\nI am sorry but you have not entered a proper value\n");
: 		return GetScore(Count --);
: 	}
: }
: 

:
: Eric Maino
: GVSU Microsoft SA
:
:

Emaino, That was exactly what I was looking for. But one more thing is how can the user enter a -1 to end the programm