private void button2_Click(object sender, EventArgs e)
{
TestLib c = new TestLib();
//if (text_chang_flag == null)
// text_chang_flag = TextIn.Text;
//else
//{
// flag = string.Compare(text_chang_flag, TextIn.Text);
// if (flag != 0)
// text_tmp = TextIn.Text;
//}
if (text_tmp == null)
{
text_tmp = TextIn.Text;
}
else
{
text_tmp = c.Big2Low(text_tmp);
}
TextOut.Text = text_tmp;
}