如何能知道panel上有几个button

Question

如题

Answer 1

遍历controls或者this.Controls.Find

Answer 2

  int count = 0;
            foreach(Control cl in this.panel1.Controls)
            {
                if (cl is Button)
                {
                    count++;
                }
            }

Answer 3

遍历一下controls，如果类行为button，i+1。

Answer 4

int c = 0;
foreach(Control   c   in   this.Controls) 
{ 
          if(c.GetType()==Type.GetType( "Button ")) 
          { 
                  c++;
          } 
}
return c

Answer 5

foreach(Control cl in this.panel1.Controls)
            {
                if (cl is Button)
                {
                    count++;
                }
            }