foreach (System.Windows.Forms.Control control in this.Controls)
{
if (control is System.Windows.Forms.TextBox)
{
System.Windows.Forms.TextBox tb = (System.Windows.Forms.TextBox)control;
tb.Text = String.Empty;
}
}
class Program
{
private static int _numberA = 5;//静态字段
private int _numberB = 3;//非静态字段
static void Main(string[] args)
{
//静态方法,字段直接通过类来调用(对于Program.Add()或Program._numberB,Program.可以省略);
Program p = new Program();//对于非static的方法,字段要通过类的实例化对象来调用;
//注意对于调用不同类型方法,不同类型字段的写法
Console.WriteLine(Program.Add(Program._numberA,p._numberB));
Console.WriteLine(Add(Program._numberA, p._numberB));
int sub=p.Subtract(_numberA,p._numberB);
Console.WriteLine(sub);
Console.ReadKey();
}
//静态方法
public static int Add(int a,int b)
{
return a + b;
}
//非静态方法
public int Subtract(int a,int b)
{
return a - b;
}
}