c# 如何在文本框中輸入數字讓它自動生成價錢的格式 如：￥100，000.00
private void textBox1_Enter(object sender, System.EventArgs e)
{
object tag = this.textBox1.Tag;
if (tag == null)
{
return;
}
this.textBox1.Text = tag.ToString();
}
private void textBox1_Leave(object sender, System.EventArgs e)
{
string text = this.textBox1.Text;
this.textBox1.Tag = text;
try
{
double val = Convert.ToDouble(text);
this.textBox1.Text = val.ToString("￥#,###.00");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
this.textBox1.SelectAll();
this.textBox1.Focus();
}
}