Knx

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
using System.IO;

namespace ScreenSnap
{
    public partial class Main : Form
    {
        #region METHODS
        #region CONSTRUCTORS
        public Main()
        {
            InitializeComponent();

            TextBoxFolder.Text = Application.StartupPath;
        }
        #endregion

        public Image ImageCapture(int Width, int Height, int X, int Y)
        {
            this.Opacity = 0;
            Rectangle ScreenBounds = new Rectangle(X, Y, Width, Height);
            Bitmap Screenshot = new Bitmap(ScreenBounds.Width, ScreenBounds.Height, PixelFormat.Format32bppArgb);
            Graphics ScreenGraph = Graphics.FromImage(Screenshot);
            ScreenGraph.CopyFromScreen(ScreenBounds.X, ScreenBounds.Y, 0, 0, ScreenBounds.Size, CopyPixelOperation.SourceCopy);
            Image Img = (Image)Screenshot;
            this.Opacity = 100;
            return Img;
        }

        public void ImageSave(Image Img)
        {
            if (Directory.Exists(TextBoxFolder.Text))
            {
                string Name = TextBoxFolder.Text + @"\" + TextBoxFileName.Text + (DateTime.Now.ToFileTime()) + ".jpg";
                Img.Save(Name, ImageFormat.Jpeg);
            }
            else
                MessageBox.Show("Invalid folder", "Error");
        }
        #endregion

        #region EVENTS
        private void ButtonScreenshot_Click(object sender, EventArgs e)
        {
            try
            {
                ImageSave(ImageCapture(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height,
                    Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y));
            }
            catch
            {
                MessageBox.Show("Unknow error!", "Error");
            }
        }
        private void ButtonScreenshotWindow_Click(object sender, EventArgs e)
        {
            try
            {
                /**
                ImageCapture(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height,
                    Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y);
                ImageSave();
                /**/
            }
            catch
            {
                MessageBox.Show("Unknow error!", "Error");
            }
        }

        private void ButtonFolderBrowse_Click(object sender, EventArgs e)
        {
            if (FolderBrowserDialogSave.ShowDialog() == DialogResult.OK)
                TextBoxFolder.Text = FolderBrowserDialogSave.SelectedPath;
        }
        #endregion
    }
}