ASP.NET--表达式、运算符与分支结构（实战案例汇总3)
案例9
：门票价格查询
步骤：
![clip_image002[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429678gBw8.jpg "clip_image002[5]")
![clip_image003[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429680IoLp.jpg "clip_image003[5]")
![clip_image004[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429681HA4x.jpg "clip_image004[5]")
其代码如下；
{
int month = Convert.ToInt32(DropDownList1.Text);
double piaojia;
if (RadioButton2.Checked)
{
if (month > 3 && month < 11)
{
piaojia = 30;
Label1.Text = Convert.ToString(piaojia);
}
else
{
piaojia = 20;
Label1.Text = Convert.ToString(piaojia);
}
}
else if (RadioButton3.Checked)
{
if (month > 3 && month < 11)
{
piaojia = 20;
Label1.Text = Convert.ToString(piaojia);
}
else
{
piaojia = 15;
Label1.Text = Convert.ToString(piaojia);
}
}
else
{
Label1.Text = "请选择游客类型";
}
}
}
![clip_image005[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429683Mi0h.jpg "clip_image005[5]")
![clip_image006[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429684hHit.jpg "clip_image006[5]")
![clip_image007[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429686XUry.jpg "clip_image007[5]")
![clip_image008[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429688Rgd6.jpg "clip_image008[5]")
![clip_image009[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429689ZBbp.jpg "clip_image009[5]")
案例10
：工资个人所得税的算法
步骤：
![clip_image010[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429690F234.jpg "clip_image010[5]")
其代码如下；
{
double shui;
double gongzi = 0;
if (TextBox1.Text == "")
{
Label1.Text = "请输入你的工资";
}
else
{
{
gongzi = Convert.ToDouble(TextBox1.Text);
}
double shuie = gongzi - 2000;
if (shuie > 100000)
{
shui = 29625 + (shuie - 100000) * 45 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 80000)
{
shui = 21625 + (shuie - 80000) * 40 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 60000)
{
shui = 14625 + (shuie - 60000) * 35 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 40000)
{
shui = 8625 + (shuie - 40000) * 30 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 20000)
{
shui = 3625 + (shuie - 20000) * 25 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 5000)
{
shui = 625 + (shuie - 50000) * 20 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 2000)
{
shui = 625 + (shuie - 2000) * 15 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 500)
{
shui = 25 + (shuie - 500) * 10 / 100;
Label1.Text = Convert.ToString(shui);
}
else if (shuie > 0 && shuie <= 500)
{
shui = shuie * 5 / 100;
Label1.Text = Convert.ToString(shui);
}
else
{
shui = 0;
Label1.Text = Convert.ToString(shui);
}
}
}
}
![clip_image011[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429692Q3mh.jpg "clip_image011[5]")
![clip_image012[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429694Fnpa.jpg "clip_image012[5]")
![clip_image013[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429698GkhR.jpg "clip_image013[5]")
![clip_image014[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429699WR8T.jpg "clip_image014[5]")
![clip_image015[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429702uyjP.jpg "clip_image015[5]")
![clip_image016[5]](http://img1.51cto.com/attachment/201005/21/1342062_12744297041lgt.jpg "clip_image016[5]")
![clip_image017[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429707w6jC.jpg "clip_image017[5]")
案例11
：积分查询
步骤：
![clip_image018[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429708ug0i.jpg "clip_image018[5]")
其代码如下；
{
int jifen = 0;
if (TextBox1.Text == "")
{
Label1.Text = "请输入你的积分";
}
else
{
{
jifen = Convert.ToInt32(TextBox1.Text);
}
if (jifen >= 10000)
{
Label1.Text = "包吃一个月的包子";
}
else if (jifen >= 8000)
{
Label1.Text = "3个包子";
}
else if (jifen >= 5000)
{
Label1.Text = "两个包子";
}
else if (jifen >= 1000)
{
Label1.Text = "一个包子";
}
else
{
Label1.Text = "你不能兑换任何物品";
}
}
}
}
![clip_image019[5]](http://img1.51cto.com/attachment/201005/21/1342062_12744297108gFi.jpg "clip_image019[5]")
![clip_image020[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429712CM1Q.jpg "clip_image020[5]")
![clip_image021[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429713HeaU.jpg "clip_image021[5]")
![clip_image022[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429715B0UQ.jpg "clip_image022[5]")
![clip_image023[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429717ef2F.jpg "clip_image023[5]")
![clip_image024[5]](http://img1.51cto.com/attachment/201005/21/1342062_1274429718cNAI.jpg "clip_image024[5]")