C#怎么让控件上下左右移动？（转）
http://wenwen.sogou.com/z/q231436494.htm
在winform中捕获上下左右键等控制键的按键事件（转）
http://blog.csdn.net/jiankunking/article/details/47320439
C#中 根据左右上下键控制不多个控件的焦点（转）
如图 有多个控件 根据上下左右键 控制每个控件的焦点；
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//定义一个二位数组 存放TextBox控件
TextBox[,] arr;
private void Form1_Load(object sender, EventArgs e)
{
//初始化数组
arr = new TextBox[3, 3]{{textBox1,textBox2,textBox3},
{textBox4,textBox5,textBox6},
{textBox7,textBox8,textBox9}
};
}
/// <summary>
/// 窗体键盘事件 注： 启用此事件之前 先设置KeyPreView属性为True
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
//首先获取当前焦点的控件
TextBox txt = (TextBox)GetFocusedControl();
//获取当前焦点控件的在数组中对应的位置 此值事先存放在控件的Tag属性中
int x = int.Parse(txt.Tag.ToString().Substring(0, 1));
int y = int.Parse(txt.Tag.ToString().Substring(1, 1));
if (e.KeyCode == Keys.Left)
{
if (y > 0)
{
arr[x, y-1].Focus();
}
}
else if (e.KeyCode == Keys.Right)
{
if (y < 2)
{
arr[x,y + 1].Focus();
}
}
else if (e.KeyCode == Keys.Up)
{
if (x > 0)
{
arr[x-1, y].Focus();
}
}
else if (e.KeyCode == Keys.Down)
{
if (x < 2)
{
arr[x+1, y].Focus();
}
}
}
// DLL调用注册
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.Winapi)]
private static extern IntPtr GetFocus();
/// <summary>
/// 当前拥有焦点的控件
/// </summary>
/// <param name="formControl"></param>
/// <returns></returns>
public static Control GetFocusedControl()
{
Control focusedControl = null;
try
{
IntPtr focusedHandle = GetFocus();
if (focusedHandle != IntPtr.Zero)
{
focusedControl = Control.FromChildHandle(focusedHandle);
}
}
catch { }
return focusedControl;
}
}
C# Winform 自适应大小 按上下键切换控件焦点（转）
按上下键切换控件焦点（只对textbox有效）
private void textBox2_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyValue == 40 || e.KeyValue == 13)
{
SendKeys.Send("{TAB}");
}
if (e.KeyValue == 38)
{
int index= this.textBox2.TabIndex;
for (int i = 0; i < this.Controls.Count; i++)
{
if (this.Controls[i].TabIndex == (index - 1))
{
this.Controls[i].Focus();
break;
}
}
}
}
自适应大小
private void Form1_SizeChanged(object sender, EventArgs e)
{ if (this.WindowState.ToString() == "Maximized")
{
this.dataGridView1.Width = this.Size.Width-35;
}
else if (this.WindowState.ToString() == "Normal")
{
this.dataGridView1.Width = this.Size.Width-35;
}
else
{
this.dataGridView1.Width = this.Size.Width-35;
}
}