textBox只能输入汉字

 private void textBox1_KeyPress(object sender, KeyPressEventArgs e)

        {

            if ((e.KeyChar > 0 && e.KeyChar < 7) || (e.KeyChar > 9 && e.KeyChar < 177))

            {

                e.Handled = true;

                MessageBox.Show("姓名只能输入汉字");

            }

        }

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