C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace XYCoordinate
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }



        int x, y;
        int x1, y1;

        private void button1_Click(object sender, EventArgs e)
        {
            PictureBox PictureBox1 = new PictureBox();
            PictureBox PictureBox2 = new PictureBox();

            x1 = panel1.Width / 2;
            y1 = panel1.Height / 2;

            PictureBox2.Location = new Point(x1, y1);
            panel1.Controls.Add(PictureBox2);

            PictureBox2.Image = Image.FromFile(@"C:\warehouse.bmp");

            x = int.Parse(textBox1.Text);
            y = int.Parse(textBox2.Text);
            PictureBox2.Image = Image.FromFile(@"C:\warehouse.bmp");
            
            if (comboBox1.SelectedIndex == 0)
            {
                PictureBox1.Image = Image.FromFile(@"C:\warehouse.bmp");
            }
            if (comboBox1.SelectedIndex == 1)
            {
                PictureBox1.Image = Image.FromFile(@"C:\retailer.bmp");
            }
           
            PictureBox1.Location = new Point(x, y);
            panel1.Controls.Add(PictureBox1);

            System.Drawing.Pen myPen = new System.Drawing.Pen(Color.Black,2);
            System.Drawing.Graphics formGraphics;
            formGraphics =panel1.CreateGraphics();
            formGraphics.DrawLine(myPen, x1, y1, x, y);
            
            myPen.Dispose();
            formGraphics.Dispose();
            
       
        }
        

        
    }
}

bonzaiholding wrote:

and i want the event to check more then one condition and will return if every thing is legal how can i do it ? (it's allways return the last result)

using System;
using System.Windows.Forms;

public partial class Form1 : Form
{
    TestClass testClass;

    public Form1()
    {

        InitializeComponent();
        testClass = new TestClass();
        testClass.TestEvent += new EventHandler<TestEventArgs>(testClass_TestEvent);
        testClass.TestEvent += new EventHandler<TestEventArgs>(testClass_TestEvent);
        Shown += new EventHandler(Form1_Shown);
    }

    void Form1_Shown(object sender, EventArgs e)
    {
        testClass.PerformTest();
    }

    void testClass_TestEvent(object sender, TestEventArgs e)
    {
        if (e.TestBool != true)
        {
            e.TestBool = true;
            MessageBox.Show("Changed to true");
        }
        else
        {
            MessageBox.Show("Already true");
        }
    }
}
public class TestClass
{
    public event EventHandler<TestEventArgs> TestEvent;

    protected virtual void OnTestEvent(TestEventArgs e)
    {
        EventHandler<TestEventArgs> eh = TestEvent;
        if (eh != null)
            eh(this, e);
    }

    public void PerformTest()
    {
        OnTestEvent(new TestEventArgs());
    }
}

public class TestEventArgs : EventArgs
{
    public bool TestBool
    {
        get;
        set;
    }
}

{
Button currentButton = sender as Button;
if (currentButton != null)
   {
   ...
   }
}