Windows基础控件使用

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button按钮

textbox  文本框事件textchanged

label标签

checkbox复选框

private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (textBox1.Text == "123") textBox2.Text = "小明";
            else textBox2.Text = ("密码错误");
        }

密码显示姓名

复选框中代码

private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked == true && checkBox2.Checked==true)
                textBox3.Text = "我喜欢" + checkBox1.Text + "和" + checkBox2.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "我喜欢" + checkBox1.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "我喜欢" + checkBox2.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "";
        }

        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked == true && checkBox2.Checked==true)
                textBox3.Text = "我喜欢" + checkBox1.Text + "和" + checkBox2.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "我喜欢" + checkBox1.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "我喜欢" + checkBox2.Text;
            else if (checkBox1.Checked == true && checkBox2.Checked == false)
                textBox3.Text = "";
        }

添加radiobutton单选按钮代码使用如下：

     private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
                textBox4.Text = "我很"+radioButton1.Text;
         {

            }
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton2.Checked == true)
                textBox4.Text = "我很" + radioButton2.Text;
        }
    }

Listbox列表框

找到items属性  点开集合

显示字符串集合编辑器

编写代码

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            textBox5.Text = "你喜欢第" + listBox1.SelectedIndex.ToString() + "种颜色:"+listBox1.Text;
        }
    }

 组合框ComboBox

属性 dropdownstyle  控制外观和功能。

有simple ，dropdown，dropdownlist  3个选项

常用事件  

leave 当控件不再是窗体的活动控件事发生。

selectedindexchanged  更改控件的selectedindew属性发生

 首先进入items  集合编写字符串

然后代码 运行

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox1.SelectedIndex == 0) textBox6.Text = "白羊座";
            else if (comboBox1.SelectedIndex == 1) textBox6.Text = "金牛座";
            else if (comboBox1.SelectedIndex == 2) textBox6.Text = "双子座";
            else if (comboBox1.SelectedIndex == 3) textBox6.Text = "蟹座";
            else if (comboBox1.SelectedIndex == 4) textBox6.Text = "狮子";
            else if (comboBox1.SelectedIndex == 5) textBox6.Text = "处女";
            else if (comboBox1.SelectedIndex == 6) textBox6.Text = "天平";
            else if (comboBox1.SelectedIndex == 7) textBox6.Text = "天蝎";
            else if (comboBox1.SelectedIndex == 8) textBox6.Text = "射手";
            else if (comboBox1.SelectedIndex == 9) textBox6.Text = "魔蝎";
            else if (comboBox1.SelectedIndex ==10)
                textBox6.Text = "水瓶";
            else if (comboBox1.SelectedIndex ==11) textBox6.Text = "双鱼";
        }
    }
}

ToolTip工具提示

Windows基础控件使用

标签：工具   常用事件   运行   更改   oid   窗体   box   drop   tip   

原文地址：https://www.cnblogs.com/ricky1234/p/9212571.html