计算个人所得税计算器设计

界面

代码

private void button1_Click(object sender, EventArgs e)

{

double income;//收º?入¨?总Á¨¹额?

double jtax;//应®|纳¨¦个?人¨?所¨´得Ì?税¡ã税¡ã额?

double stax;//应®|纳¨¦税¡ã所¨´得Ì?额?

double trate=0.00;//适º¨º用®?税¡ã率¨º

double deduct;//允¨º许¨ª扣?除y部?分¤?

double sdeduct=0.00;//速¨´算?扣?除y数ºy

income = int.Parse(textBox1.Text);

deduct = int.Parse(textBox2.Text);

stax = income - deduct;

if (stax <= 1500)

{

trate = 0.03;

sdeduct = 0;

}

else

{

if (stax > 1500 & stax <= 4500)

{

trate = 0.10;

sdeduct = 105;

}

else if (stax > 4500 & stax <= 9000)

{

trate = 0.20;

sdeduct = 555;

}

else if (stax > 9000 & stax <= 35000)

{

trate = 0.25;

sdeduct = 1005;

}

else if (stax > 35000 & stax <=55000 )

{

trate = 0.30;

sdeduct = 2755;

}

else if (stax > 55000 & stax <= 80000)

{

trate = 0.35;

sdeduct = 5505;

}

else if (stax > 80000 )

{

trate = 0.45;

sdeduct = 13505;

}

}

jtax = stax * trate - sdeduct;

textBox3.Text = jtax.ToString ();

}

private void button2_Click(object sender, EventArgs e)

{

textBox1.Text = "";

textBox2.Text = "";

textBox3.Text = "";

}