C#

private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
string file = "";
OpenFD.FileName = "";
OpenFD.Title = "open image";
OpenFD.InitialDirectory = "C";
OpenFD.Filter = "JPEG|*.jpg|Bmp|*.bmp|All Files|*.*.*";
if (OpenFD.ShowDialog() == DialogResult.OK)
{
file = OpenFD.FileName;
pictureBox1.Image = Image.FromFile(file);
sz = pictureBox1.Size;
a=sz.Width; b= sz.Height;
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
switch (e.Button)
{
case MouseButtons.Left:
{
rect = new Rectangle(rect.Left, rect.Top, e.X - rect.Left, e.Y - rect.Top);
this.Invalidate();
Application.DoEvents();
break;
}
}
}



private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
rect = new Rectangle(e.X, e.Y, 0, 0);
this.Invalidate();
}



private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
using (Pen pen = new Pen(Color.Red, 2)) e.Graphics.DrawRectangle(pen, rect);
if (label1.TextAlign == ContentAlignment.TopLeft)
{
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), label1.Bounds);
}
else if (label1.TextAlign == ContentAlignment.TopCenter)
{
SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font);
float left = ((float)this.Width + label1.Left) / 2 - size.Width / 2;
RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height);
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1);
}
else
{
SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font);
float left = (float)label1.Width - size.Width + label1.Left;
RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height);
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1);
}
label1.Top = rect.Top; label1.Left = rect.Left; label1.Width = rect.Width; label1.Height = rect.Height;
}


private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog SaveFD1 = new SaveFileDialog();
SaveFD1.FileName = "";
SaveFD1.InitialDirectory = "C";
SaveFD1.Title = "save file Name";
SaveFD1.Filter= "JPG|*.jpg|Bmp|*.bmp";
if (SaveFD1.ShowDialog() != DialogResult.Cancel)
{
System.IO.Stream filename = (System.IO.FileStream)SaveFD1.OpenFile();

if (SaveFD1.Filter == "JPG")
pictureBox1.Image.Save(SaveFD1.FileName);
System.Drawing.Imaging.ImageFormat.Jpeg);
else if (SaveFD1.Filter == "Bmp")
{
pictureBox1.Image.Save(filename, System.Drawing.Imaging.ImageFormat.Bmp);
}
filename.Close();
}
}