CheckBox和richTextBox

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void Form1_Load(object sender, EventArgs e)

        {

            foreach (Control ctl in this.Controls)//遍历窗体中的控件

            { 

                if(ctl.GetType().Name =="CheckBox")//判断控件的类型是否是CheckBox

                {CheckBox cbox=(CheckBox)ctl;//将遍历的控件强制转换

                cbox.AutoEllipsis = true;//设置文本过长显示...
                //cbox.CheckAlign = ContentAlignment.MiddleCenter;千万不敢写这个选项，不然运行结果如下图
                 

                 cbox.CheckAlign = ContentAlignment.BottomRight;

                 cbox.Checked=false;

                }

            }

        }

        //选择篮球复选框

        private void checkBox1_CheckedChanged(object sender, EventArgs e)

        {

            if (checkBox1.Checked)//判断checkBox1是否选中

            {

                if (richTextBox1.Text == "")

                    richTextBox1.Text = checkBox1.Text;//为文本框赋值

                else

                    richTextBox1.Text +="," +checkBox1.Text;



            }



        }

        //选择足球复选框

        private void checkBox2_CheckedChanged(object sender, EventArgs e)

        {

            if (checkBox2.Checked)//判断checkBox2是否选中

            {

                if (richTextBox1.Text == "")

                    richTextBox1.Text = checkBox2.Text;//为文本框赋值

                else

                    richTextBox1.Text += "," + checkBox2.Text;



            }

 

        }

        //选择兵乓球复选框

        private void checkBox3_CheckedChanged(object sender, EventArgs e)

        {

            if (checkBox3.Checked)//判断checkBox3是否选中

            {

                if (richTextBox1.Text == "")

                    richTextBox1.Text = checkBox3.Text;//为文本框赋值

                else

                    richTextBox1.Text += "," + checkBox3.Text;



            }



        }



    }

}