01 02 03 04 | private void button1_Click(object sender, EventArgs e) { richTextBox1.Text = textBox1.Text.Length.ToString(); } |
01 02 03 04 | private void button2_Click(object sender, EventArgs e) { richTextBox1.Text = "只要你输入字符并单击计算就会自动 计算出长度哦 还不试试"; } |
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