private void RdbUStoNT_CheckedChanged(object sender, EventArgs e)
{
if (RdbUStoNT.Checked)
{
int dollor = 0;
double rate = 0;
double result = 0;
string msg = "";
try
{
dollor = Convert.ToInt32(TxtDollor.Text);
}
catch
{
MessageBox.Show("請輸入金額", "注意", MessageBoxButtons.OK, MessageBoxIcon.Warning);
RdbUStoNT.Checked = false;
TxtDollor.Focus();
return;
}
try
{
rate = Convert.ToDouble(TxtRate.Text);
}
catch
{
MessageBox.Show("請輸入美金匯率", "注意", MessageBoxButtons.OK, MessageBoxIcon.Warning);
RdbUStoNT.Checked = false;
TxtRate.Focus();
return;
}
result = dollor * rate;
msg = "美金" + dollor.ToString("f2") + "元可兌換成台幣" + result.ToString("f2") + "元";
LblMsg.Text = msg;
}
}
private void TxtDollor_Enter(object sender, EventArgs e)
{
TxtDollor.Clear();
}