key press event overloading i

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C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace HUMAN_RESOURCES.MANAGEMENT
{
    class function
    {
        public void keypress(object Sender, KeyPressEventArgs e)
        {
            int x = e.KeyChar;
            if (x != 8)
            {
                if (!(x >= 48 && x <= 57))
                    e.Handled = true;
            }
        }
    }
}

this is my class were i have written a key press event code for numbers,
i want to call this code in my different form

where i can use this code by overloading please help me i am in trouble ,,,

Posted 20-Jan-12 22:39pm

peutz kumar gupta

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Sergey Alexandrovich Kryukov 21-Jan-12 4:53am

I don't know computer language called "Beginner". I don't know such platform. Please put relevant tags.
--SA

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OriginalGriff · Answer 1 · 2012-01-20T22:51:00

You can't.
That has nothing to do with overloading.

Overloading: Haveing different versions of the same method, distinguished by having differing parameters. For example:

C#

public void Print(int i) { Console.WriteLine("Integer: {0}", i);}
public void Print(float f) { Console.WriteLine("Float: {0}", f);}

What you want to do is call the same method as an event handler from many different files.
What you are trying to do is to make it static - which means it is shared and does not refer to any specific instance of the class it is a part of. But that won't work either, because the designer always refers to the class instance when adding eveny handlers:

C#

this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.MyForm_KeyDown);

So, the best you can do is declare a static method, which accepts the KeyPressEventArgs and call it from each of your individual handlers:

C#

public static void IgnoreUnwantedKeys(KeyPressEventArgs e)
{
    int x = e.KeyChar;
    if (x != 8)
    {
        if (!(x >= 48 && x <= 57))
            e.Handled = true;
    }
}

C#

public void keypress(object Sender, KeyPressEventArgs e)
{
    function.IgnoreUnwantedKeys(e);
}