Form1中，一个Lable1;在Form2中控制Form1中的Lable1的显示或隐藏!
Form1代码：
C# codenamespace WindowsApplication2
{
public delegate void SetVisiableHandler();
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Form2 frm = new Form2(new SetVisiableHandler(SetVisiable));
frm.Show();
}
private void SetVisiable()
{
SetVisiable(this.label1, !this.label1.Visible);
}
private void SetVisiable(Control control, bool visiable)
{
if (this.Controls.Contains(control))
{
control.Visible = visiable;
}
}
}
}
Form2代码
C# codenamespace WindowsApplication2
{
public partial class Form2 : Form
{
private SetVisiableHandler m_setVisible;
public Form2(SetVisiableHandler setvisible)
{
InitializeComponent();
this.m_setVisible = setvisible;
}
private void btnVisible_Click(object sender, EventArgs e)
{
if (this.m_setVisible != null)
{
this.m_setVisible();
}
}
}
}