基于《C#中switch选择语句配合下拉列表控件完成季节判断与窗体颜色变化》视频讲解源代码:设计界面:季节判断与窗体背景颜色变化季节判断:privatevoidbutton1_Click(objectsender,EventArgse){switch(comboBox1.SelectedIndex1){case3:case4:case5:textBox1.Text="春季";break;case6

基于《C#中switch选择语句配合下拉列表控件完成季节判断与窗体颜色变化》视频讲解源代码:
设计界面:
季节判断与窗体背景颜色变化
季节判断:private void button1_Click(object sender, EventArgs e){switch(comboBox1.SelectedIndex 1){case 3:case 4:case 5:textBox1.Text = "春季";break;case 6:case 7:case 8:textBox1.Text = "夏季";break;case 9:case 10:case 11:textBox1.Text = "秋季";break;case 12:case 1:case 2:textBox1.Text = "冬季";break;}}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e){switch(comboBox2.SelectedIndex){case 0:this.BackColor=Color.Red;break;case 1:this.BackColor = Color.Yellow;break;case 2:this.BackColor = Color.Blue;break;case 3:this.BackColor = Color.Green;break;case 4:this.BackColor = Color.Pink;break;}}
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