TheSwamp

Code Red => .NET => Topic started by: ekoneo on October 19, 2021, 03:33:28 AM

Title: Having problem with class inhetitage
Post by: ekoneo on October 19, 2021, 03:33:28 AM

I created a Form1 form including a label1. Also I created a class1 file. When Form1 load the startFunction methos will be triggered by the Form1_Load event. startFunction is a inherited method.

Code: [Select]

namespace MyNameSpace
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load (object sender, EventArgs e)
        {

            StartMethod();

        }
        public void startMethod()
        {
            Class1 ClasInherited = new Class1();
            ClasInherited.ChangeLabelText();
         }
.
.

Class1.cs file include ChangeLabelText() method.

Code: [Select]


public partial class Class1
    {
    Form1 form1 = new YuzeyAnaliz();
   
     public void ChangeLabelText()
    {
   
     form1.label5.Text = "Text changed";

    }
.
.



However label5 text doesnt change. I am missing something.

Title: Re: Having problem with class inhetitage
Post by: MickD on October 19, 2021, 04:39:36 PM

You are 'embedding' another form inside the Class1 class, not inheriting Class1

Form1 inherits from Form
Class1 doesn't inherit anything but it does create a Form1 inside itself (encapsulation)

Something like this should work:

Code - C#: [Select]

1.     public class Form1 : Form
2.     {
3.         public Form1() // constructor, you can initialize everything here instead of _Load if you want
4.         {
5.             InitializeComponent();
6.             // you can change text here too
7.         }
8.  
9.         private void Form1_Load(object sender, EventArgs e)
10.         {
11.             // _Load good for loading external data say or saved settings when the form is loaded
12.             StartMethod();
13.  
14.             // or just change text here, no need for StartMethod():
15.             // this.lable5.Text = "Text changed";
16.         }
17.  
18.         public void StartMethod()
19.         {
20.             this.lable5.Text = "Text changed";
21.         }
22.     }
23.