using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace _035_将字母转化为大写或小写 { public partial class Frm_main : Form { public Frm_main() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { if (radioButton1.Checked) { textBox2.Text = textBox1.Text.ToUpper(); } else { textBox2.Text = textBox1.Text.ToLower(); } } } }
_035_将字母转化为大写或小写
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