第四章

4.2

做不来这个 我就百度了一下创建窗体

From a = new Form()
a.Show();//创建
a.Close();//关闭

4.4

代码如下：

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
this.SelectNextControl(this.ActiveControl,true,true,true,true);
}
if (e.KeyValue == 13)
{
this.textBox2.Focus();
}

this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.EnterToTab);
this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.EnterToTab);

}

private void EnterToTab(object sender,System.Windows.Forms.KeyEventArgs e)
{
if (e.KeyValue == 13)
{
SendKeys.Send("{TAB}");
}
}

第四章

原文：http://www.cnblogs.com/djwbk/p/7639075.html