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)
   {
   ...
   }
}

Button wacht = new Button();

List<DataGridViewRow> list = new List<DataGridViewRow>();
foreach (DataGridViewRow dr in dataGridView1.Rows)
{
    list.Add(dr);
}
wacht.Tag = list;
wacht.Text = flowLayoutPanel1.Controls.Count.ToString();
wacht.Width = 75;
wacht.Height = 63;
wacht.Click += new EventHandler(wacht_Click);
flowLayoutPanel2.Controls.Add(wacht);
dataGridView1.Rows.Clear();

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

namespace Testy
    {
    public partial class frmTest : Form
        {
        public frmTest()
            {
            InitializeComponent();
            }

        private void butFillIt_Click(object sender, EventArgs e)
            {
            try
                {
                if (dgvDisplay.ColumnCount == 0)
                    {
                    string[] strNames = { "MyColumn", "More", "3", "4", "5", "6" };
                    int iBase = 1;
                    foreach (string s in strNames)
                        {
                        dgvDisplay.Columns.Add("Base" + iBase, strNames[iBase - 1]);
                        iBase++;
                        }
                    }
                string[] sa = { "Hello", "there", "this", "is", "a", "test" };
                for (int i = 0; i < 5; i++)
                    {
                    sa[0] = "Hello " + i;
                    dgvDisplay.Rows.Add(sa);
                    }
                }
            catch (Exception ex)
                {
                MessageBox.Show(ex.Message);
                }
            }

        private void butDoIt_Click(object sender, EventArgs e)
            {
            try
                {
                List<DataGridViewRow> list = new List<DataGridViewRow>();
                foreach (DataGridViewRow dr in dgvDisplay.Rows)
                    {
                    if ((dr.Cells.Count > 0) && (dr.Cells[0].Value != null))
                        {
                        list.Add(dr);
                        }
                    }
                butUndoIt.Tag = list;
                dgvDisplay.Rows.Clear();
                }
            catch (Exception ex)
                {
                MessageBox.Show(ex.Message);
                }
            }

        private void butUndoIt_Click(object sender, EventArgs e)
            {
            try
                {
                Button currentButton = sender as Button;
                List<DataGridViewRow> list = currentButton.Tag as List<DataGridViewRow>;
                if (list != null)
                    {
                    foreach (DataGridViewRow dgvr in list)
                        {
                        dgvDisplay.Rows.Add(dgvr);
                        }
                    currentButton.Tag = null;
                    }
                }
            catch (Exception ex)
                {
                MessageBox.Show(ex.Message);
                }
            }
        }
    }

public IEnumerator<T> GetEnumerator()
{
    Command<K, T> command = this.tempCmd;
    do{
        yield return command.Item;
        command = command.NextCmd;
    }
    while(command != null);
}