READING
XML FILE:
private void button1_Click_1(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "XML|*.xml";
if (ofd.ShowDialog() == DialogResult.OK)
{
XmlDocument xdoc = new XmlDocument();
xdoc.Load(ofd.FileName);
foreach(XmlNode node in xdoc.SelectNodes("People/Person"))
MessageBox.Show(node.SelectSingleNode("Name").InnerText);
}
}
XML
FILE:
<People>
<Person>
<Name>Adam</Name>
<Age>15</Age>
<Email>google@gmail.com</Email>
</Person>
<Person>
<Name>Zoloo</Name>
<Age>24</Age>
<Email>zoloo@gmail.com</Email>
</Person>
</People>
Editing
XML:
XmlDocument xdoc;
string path;
private void button1_Click_1(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "XML|*.xml";
if (ofd.ShowDialog() == DialogResult.OK)
{
path = ofd.FileName;
xdoc = new XmlDocument();
xdoc.Load(path);
textBox1.Text =
xdoc.SelectSingleNode("People/Person/Name").InnerText;
numericUpDown1.Value = Convert.ToInt32(xdoc.SelectSingleNode("People/Person/Age").InnerText);
textBox2.Text =
xdoc.SelectSingleNode("People/Person/Email").InnerText;
}
}
private void button2_Click(object sender, EventArgs e)
{
xdoc.SelectSingleNode("People/Person/Name").InnerText = textBox1.Text;
xdoc.SelectSingleNode("People/Person/Age").InnerText = numericUpDown1.Value.ToString();
xdoc.SelectSingleNode("People/Person/Email").InnerText = textBox2.Text;
xdoc.Save(path);
}
DELETING
A XML NODE:
private void button4_Click(object sender, EventArgs e)
{
xdoc = new XmlDocument();
xdoc.Load("xDoc1.xml");
foreach (XmlNode xnode in xdoc.SelectNodes("People/Person"))
if (xnode.SelectSingleNode("Name").InnerText == textBox1.Text)
xnode.ParentNode.RemoveChild(xnode);
xdoc.Save("xDoc1.xml");
}
MD5
AND SHA1:
private void button1_Click(object sender, EventArgs e)
{
// MD5
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
UTF8Encoding utf8 = new UTF8Encoding();
MessageBox.Show(BitConverter.ToString(md5.ComputeHash(utf8.GetBytes(textBox1.Text))));
// SHA1
SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
MessageBox.Show(BitConverter.ToString(sha1.ComputeHash(utf8.GetBytes(textBox1.Text))));
}
Drag and Drop:
private void panel1_DragOver(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.All;
}
private void panel1_DragDrop(object sender, DragEventArgs e)
{
string[] files = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach(string s in files)
MessageBox.Show(s);
}
Drawing
Shapes:
private void panel1_Click(object sender, EventArgs e)
{
SolidBrush sb = new SolidBrush(Color.Green);
Graphics g = panel1.CreateGraphics();
g.FillRectangle(sb, 20, 20, 100,
50);
g.FillEllipse(sb, 100, 100, 50,
50);
g.FillPie(sb, 150, 150, 60, 60, 0,
270);
}
Drawing
with Pen class:
private void panel1_Click(object sender, EventArgs e)
{
Pen p = new Pen(Color.Red, 3);
Graphics g = panel1.CreateGraphics();
g.DrawArc(p, 20, 20, 100, 100, 0,
90);
g.DrawLine(p, new Point(0, 0), new Point(100, 100));
}
Drawing
Strings Text:
private void panel1_Click(object sender, EventArgs e)
{
SolidBrush sb = new SolidBrush(Color.Blue);
Pen p = new Pen(Color.Red, 3);
Graphics g = panel1.CreateGraphics();
FontFamily ff = new FontFamily("Arial");
System.Drawing.Font font = new System.Drawing.Font(ff, 16, FontStyle.Italic);
g.DrawString("Adam", font,
sb, new Point(20, 20));
}
Multiple
Colors in a LinearGradientBrush:
private void panel1_Click(object sender, EventArgs e)
{
LinearGradientBrush lgb = new LinearGradientBrush(new Point(20, 20), new Point(20, 70), Color.Red, Color.Yellow);
SolidBrush sb = new SolidBrush(Color.Blue);
Pen p = new Pen(Color.Red, 3);
Graphics g = panel1.CreateGraphics();
g.FillRectangle(lgb, 20, 20, 50,
50);
g.FillEllipse(lgb, 100, 100, 100,
100);
//
Multiple Colors:
ColorBlend
cb = new ColorBlend();
cb.Colors = new Color[] { Color.Black, Color.Blue, Color.SkyBlue, Color.White };
cb.Positions = new float[] { 0, .33F, .66F, 1F };
lgb.InterpolationColors = cb;
g.FillRectangle(lgb, 20, 20, 50,
50);
}
PathGradientBrush
:
private void panel1_Click(object sender, EventArgs e)
{
GraphicsPath gp = new GraphicsPath();
gp.AddEllipse(20, 20, 100, 100);
PathGradientBrush pgb = new PathGradientBrush(gp);
pgb.CenterColor = Color.White;
pgb.SurroundColors = new Color[] { Color.Black };
Graphics g = panel1.CreateGraphics();
g.FillEllipse(pgb, 20, 20, 100,
100);
}
CAPTURING SCREEN
private void button1_Click(object sender, EventArgs e)
{
//
screen
/*
Bitmap b = new
Bitmap(Screen.PrimaryScreen.WorkingArea.Width,
Screen.PrimaryScreen.WorkingArea.Height);
Graphics g = Graphics.FromImage(b);
g.CopyFromScreen(Point.Empty,
Point.Empty, Screen.PrimaryScreen.WorkingArea.Size);
pictureBox1.Image = b;
*/
Thread t = new Thread(Blah);
t.Start();
}
void Blah()
{
for (; ; )
{
Bitmap b = new Bitmap(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
Graphics g = Graphics.FromImage(b);
g.CopyFromScreen(Point.Empty, Point.Empty, Screen.PrimaryScreen.WorkingArea.Size);
pictureBox1.Image = b;
}
}
Making
Keyboard Shortcuts
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if(e.Control && e.KeyCode.ToString() == "F")
MessageBox.Show("You pressed
ctrl and F from the textbox");
if (e.Alt && e.KeyCode.ToString() == "F")
MessageBox.Show("You pressed
alt and F from the textbox");
if (e.Shift && e.KeyCode.ToString() == "F")
MessageBox.Show("You pressed
Shift and F from the textbox");
}
