C# Tutorial

THREAD EXAMPLE:

        Thread t;

        string myString = "";

        private void button4_Click(object sender, EventArgs e)

        {

            t = new Thread(Write);

            object[] objA = { "Steve", 300 };

            t.Start(objA);

            while (t.IsAlive) ;

            {

                textBox1.Text = myString;

            }

        }

        void Write(object array)

        {

            object[] o = array as object[];

            for (int i = 0; i < Convert.ToInt32(o[1]); i++)

            {

                Thread.Sleep(10); // 0.5 sec

                myString += o[0].ToString() + i.ToString() + "\r\n";

            }

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)

        {

            t.Abort();

        }

WebClient Class Downloading Files:

        private void button4_Click(object sender, EventArgs e)

        {

            SaveFileDialog sfd = new SaveFileDialog();

            if (sfd.ShowDialog() == DialogResult.OK)

            {

                WebClient wc = new WebClient();

                wc.DownloadFileAsync(new Uri("http://text"), sfd.FileName);

                wc.DownloadFileCompleted += new AsyncCompletedEventHandler(wc_download);

                wc.DownloadProgressChanged += new DownloadProgressChangedEventHandler(wc_donloadchanged);

            }

        }

        private void wc_donloadchanged(object sender, DownloadProgressChangedEventArgs e)

        {

            // label1.Text = "Progress: " + e.ProgressPercentage.ToString();

        }

        private void wc_download(object sender, AsyncCompletedEventArgs e)

        {

            MessageBox.Show("File is downloaded");

        }

FONT DIALOG:

        private void button4_Click(object sender, EventArgs e)

        {

            FontDialog fd = new FontDialog();

            fd.MinSize = 10;

            fd.MaxSize = 20;

            fd.ShowColor = true;

            fd.ShowHelp = true;

            fd.HelpRequest += fd_HelpRequest;

            if (fd.ShowDialog() == DialogResult.OK)

            {

                textBox1.Font = fd.Font;

                textBox1.ForeColor = fd.Color;

            }

        }

        void fd_HelpRequest(object sender, EventArgs e)

        {

            MessageBox.Show("This is help button");

        }

PictureBox:

        private void button4_Click(object sender, EventArgs e)

        {

            OpenFileDialog ofd = new OpenFileDialog();

            if (ofd.ShowDialog() == DialogResult.OK)

            {

                Image img = Image.FromFile(ofd.FileName);

                pictureBox1.Image = img;

            }

        }

NOTIFY ICON CONTROL:

        private void button1_Click(object sender, EventArgs e)

        {

            this.Hide();

            notifyIcon1.ShowBalloonTip(1000, "Still Running", "Your app is still running", ToolTipIcon.Info);

        }

        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)

        {

            this.Show();

        }

TreeView:

        private void button1_Click(object sender, EventArgs e)

        {

            treeView1.Nodes.Add("People");

            treeView1.Nodes.Add("Animals");

            treeView1.Nodes[0].Nodes.Add("Adam");

            treeView1.Nodes[0].Nodes.Add("Sam");

            treeView1.Nodes[1].Nodes.Add("Dog");

            treeView1.Nodes[1].Nodes.Add("Cat");

            treeView1.Nodes[1].Nodes[0].Nodes.Add("Spot");

        }

        List<TreeNode> tnlist = new List<TreeNode>();

        private void button2_Click(object sender, EventArgs e)

        {

            RemoveChecked(treeView1.Nodes);  

        }

        void RemoveChecked(TreeNodeCollection tnc)

        {

            foreach (TreeNode tn in tnc)

                if (tn.Checked) tnlist.Add(tn);

                else if (tn.Nodes.Count != 0) RemoveChecked(tn.Nodes);

            foreach (TreeNode tn in tnlist)

                treeView1.Nodes.Remove(tn);

        }

Propert Grid:

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        Person p = new Person();

        private void button1_Click(object sender, EventArgs e)

        {

            p.Name = "Adam";

            p.Age = 15;

            p.Email = "google@gmail.com";

            propertyGrid1.SelectedObject = p;

            Reload();

        }

        void Reload()

        {

            textBox1.Text = p.Name;

            textBox2.Text = p.Age.ToString();

            textBox3.Text = p.Email;

        }

        private void propertyGrid1_PropertyValueChanged(object s, PropertyValueChangedEventArgs e)

        {

            Reload();

        }

    }

    class Person

    {

        public string Name

        {

            get;

            set;

        }

        public int Age

        {

            get;

            set;

        }

        public string Email

        {

            get;

            set;

        }

    }

}