How to access the values assigned to the members of Class 1 in Class 2 ?

[dotnetnovice]

Hi everybody...I am new to OOP! so facing some difficulties and need help.
My Problem is...

I have a form and two classes (Class1 And Class2) when i enter the data in to the form the values are assigned to Class1 Members what i want is the values assigned to class1 members accessible in class2. I am using Visual Studio 2008

Here is the code

Code for Form:

using System;
using System.Windows.Forms;
 
namespace Simple_Dal_Test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void label2_Click(object sender, EventArgs e)
        {
 
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
 
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
 
            MyClass1 MyName = new MyClass1();
            MyName.Name = textBox1.Text;
 
            MyClass1 MyPh = new MyClass1();
            MyPh.Ph = textBox2.Text;
 
        }
    }
}
 

Code For Class1:

namespace Simple_Dal_Test
{
    public class MyClass1
    {
        private string _Name;
        private string _Ph;
 
        public string Name
        {
            get { return _Name; }
            set { _Name = value; }
        }
 
        public string Ph
        {
            get { return _Ph; }
            set { _Ph = value; }
        }
 
    }
 
}

Code For Class2:

namespace Simple_Dal_Test
{
 
    public class MyClass2
    {
 
        MyClass1 MyN = new MyClass1();
 
 
        MyClass1 MyP = new MyClass1();
 
    }
}

[tlhintoq]

        private void button1_Click(object sender, EventArgs e)
        {
 
            MyClass1 MyName = new MyClass1();
            MyName.Name = textBox1.Text;
 
            MyClass1 MyPh = new MyClass1();
            MyPh.Ph = textBox2.Text;
 
        }

In this case your MyClass1 only has a scope of this one method. It was made at the beginning of the method and will cease to exist when the method ends.

What you need to do is create the classes 'higher up the food chain' so they have a broader scope of existence. For example: Your form1 could create a public Class1 and a public Class2. They could then be referenced through the form1

// From inside Class2
String PhoneNumber = Form1.MyClass1.PhoneNumberProperty;

Next tip. Don't do this:

MyPh.Ph = textBox2.Text;

This requires that every other class know the exact name of every control of every other class and form. It sucks and is impossible to maintain. Its a bad habit. Don't start and you won't have to break yourself of it.

Take an extra 3 minutes and build properties in the forms for these things.

// In class1
string PhoneNumber
{
   get  { return textbox1.text; }
   set  { textbox1.text = value; }
}
 

Now you can get this value by just getting the PhoneNumber property

// From class87
MyClass1.PhoneNumber = "867-5309";
 

Later you can redesign the entire form and put in range checking without every class that references this property getting broken.

// In class1
string PhoneNumber
{
   //  Textbox1 has been renamed, but other classes didn't need to know
   get  { return tbPhoneNumber.text; }
   set  {
              tbPhoneNumber.text = value;
              If (value == "867-5609)
              {
               MessageBox.Show("You got the number off the wall", "Hey Janey");
              }
              if (value.StartsWith("555")
              {
               MessageBox.Show("That prefix is only used in movies.");
              }
 
          }
}