private void textBox1_TextChanged(object sender, EventArgs e)
{ Size size = TextRenderer.MeasureText(textBox1.Text, textBox1.Font); textBox1.Width = size.Width;
textBox1.Height = size.Height;
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
switch (e.KeyChar )
{
case '\r':
// perform necessary action
e.Handled = true;
//do something
//Run command
if (e.KeyCode.Equals(Keys.Enter))
{
}
break;
}
}
//move the caret to the end of the text textBoxLog.SelectionStart = textBoxLog.TextLength; //scroll to the caret textBoxLog.ScrollToCaret();
private void button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < 4; i++)
{
int test = i * i;
listView1.Items.Add("key" + i.ToString(), test.ToString(), i);
}
}
private void button2_Click(object sender, EventArgs e)
{
for (int i = 0; i < 4; i++)
{
MessageBox.Show(listView1.Items["key" + i.ToString()].Text);
}
}
/* 目標視窗必須顯示在最上層
* 引入 Win32 API 中的 User32.DLL
* 需要加上 using System.Runtime.InteropServices;
*/
[DllImport("user32.dll")]
public static extern Boolean GetWindowRect(IntPtr hWnd, ref Rectangle bounds);
public void CaptureWindow () {
/* 取得目標視窗的 Handle
* 需要加上 using System.Diagnostics;
*/
Process[] process = Process.GetProcessesByName("notepad");
/* 取得該視窗的大小與位置 */
Rectangle bounds;
GetWindowRect(process[0].MainWindowHandle, ref bounds);
/* 抓取截圖 */
Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
Graphics gfx = Graphics.FromImage(screenshot);
gfx.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy);
/* 利用 PictureBox 顯示出來 */
imageView.Image = (Image) screenshot;
imageView.Update();
}
//最大化視窗無法使用
using System.Runtime.InteropServices;
[DllImport("User32.dll", EntryPoint = "FindWindow")]
private static extern int FindWindow(string lpClassName, string
lpWindowName);
[DllImport("user32.dll")]
static extern bool ShowWindow(int hWnd, int nCmdShow);
private void SetActiveWindow()
{
//If the window state of the inactive window is maximize, this code doesn't work.
int WINDOW_HANDLER = FindWindow(null, @"Piriform CCleaner");
if (WINDOW_HANDLER == 0)
{ }
else
{
ShowWindow(WINDOW_HANDLER, 3);
}
}
this.listBox_FileList.AllowDrop = true;編輯DragEnter事件。
private void listBox_FileList_DragEnter(object sender, DragEventArgs e)
{
// 確定使用者抓進來的是檔案
if (e.Data.GetDataPresent(DataFormats.FileDrop, false) == true)
{
// 允許拖拉動作繼續 (這時滑鼠游標應該會顯示 +)
e.Effect = DragDropEffects.All;
}
}
編輯DragDrop事件。
private void listBox_FileList_DragDrop(object sender, DragEventArgs e)
{
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
foreach (string file in files)
{
listBox_FileList.Items.Add(file);
}
}
Form1.AllowDrop = true;編輯DragEnter事件。
private void Form1_DragEnter(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Move;
}
編輯DragDrop事件。
private void Form1_DragDrop(object sender, DragEventArgs e)
{
int x = this.PointToClient(new Point(e.X, e.Y)).X;
int y = this.PointToClient(new Point(e.X, e.Y)).Y;
if(x >= pictureBox1.Location.X && x <= pictureBox1.Location.X + pictureBox1.Width && y >= pictureBox1.Location.Y && y <= pictureBox1.Location.Y + pictureBox1.Height)
{
string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
pictureBox1.Image = Image.FromFile(files[0]);
}
}
this.MouseWheel+= new MouseEventHandler(Form1_MouseWheel);
ListBox lbLog; int itemsPerPage = (int)(lbLog.Height / lbLog.ItemHeight); lbLog.TopIndex = lbLog.Items.Count - itemsPerPage;
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
namespace DevDistrict.Sample
{
public class GradientPanel : System.Windows.Forms.Panel
{
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint (e);
Graphics g = e.Graphics;
g.SmoothingMode = SmoothingMode.HighQuality;
GraphicsPath gPath = new GraphicsPath();
Rectangle r = new Rectangle(0,0,this.Width,this.Height);
gPath.AddRectangle(r);
LinearGradientBrush lb = new LinearGradientBrush(r,Color.White,Color.Blue,LinearGradientMode.Vertical);
g.FillPath(lb,gPath);
}
}
}
private void niTray_Click(object sender, EventArgs e)
{
Show();
this.ShowInTaskbar = true;
this.WindowState = FormWindowState.Normal;
}
this.progressBar1 = new System.WinForms.ProgressBar();
progressBar1.Maximum = 200;
progressBar1.Manimum=0;
progressBar1.Step=20;
//使用ProgressBar控制項
protected void timer1_Tick (object sender, System.EventArgs e)
{
if (progressBar1.Value >= 200 )
{
progressBar1.Value = 0;
}
progressBar1.Value += 20;//同progressBar1.PerformStep();
Console.WriteLine(progressBar1.Value.ToString() );//取得值
}
private void button1_Click ( object sender , System.EventArgs e )
{
if ( textBox1.SelectedText != "" )
{
Clipboard.SetDataObject ( textBox1.SelectedText ) ;
//第二個參數為true時，複製後的內容能被其他程式使用, 為false表示複製後的內容不為其他程式使用
Clipboard.SetDataObject("hello",true);
}
else
{
textBox2.Text = "在textBox1中沒有選定的內容";
}
}
private void button2_Click ( object sender , System.EventArgs e )
{
IDataObject iData = Clipboard.GetDataObject ( ) ;
//檢測數據是否是可以使用的格式，即文本格式
if ( iData.GetDataPresent ( DataFormats.Text ) )
{
//是可以使用的格式，就在textbox2中顯示剪貼簿中的內容
textBox2.Text = ( String ) iData.GetData ( DataFormats.Text ) ;
}
else
{
//如果不是
textBox2.Text = "沒有從剪貼簿中接收到數據！" ;
}
}
//用預設郵件程式寄信
System.Diagnostics.Process.Start("Mailto:no@spam.com")
//用預設瀏覽器開網頁
System.Diagnostics.Process.Start("http:\\msdn.microsoft.com")
public Form1()
{
InitializeComponent();
this.KeyPreview = true; //Form handles keyinput
}
private void Form1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F1)
{
Close();
}
}