这是我的代码:
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public delegate void Delobj();
Delobj obj;
private void Form1_Load(object sender, EventArgs e)
{
Form2 obj2 = new Form2();
obj2.Show();
Form3 obj3 = new Form3();
obj3.Show();
Delobj += obj2.getmessage();
Delobj += obj3.getmessage();
}
private void button1_Click(object sender, EventArgs e)
{
obj.Invoke();
}
}
}
我得到这个错误:
错误1"WindowsFormsApplication1.Form1.Delobj"是"类型",在给定上下文E:\net\projects\WindowsFormsAapplications1\WindowsFormsAApplication1\Form1.cs 33 13 WindowsFormsAapplication1 中无效
Delobj
是委托的类型。需要设置为不接受任何参数的有效void方法的Delobj
类型的实际实例变量称为obj
obj += obj2.getmessage();
obj += obj3.getmessage();