c#简易计算器源代码!
}
textBox1.Text = (num1 / num2).ToString(); break;
}
ysf = 1;
button14.Focus();
}
private void button11_Click(object sender, EventArgs e)
{
if (textBox1.Text.IndexOf(".") == -1)
{
textBox1.Text += ".";
}
button14.Focus();
}
private void button17_Click(object sender, EventArgs e)
{
textBox1.Text = "0";
}
private void button18_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text.Substring(0, textBox1.Text.Length - 1); if (Convert.ToDouble(textBox1.Text.Length - 1) < 0) {
textBox1.Text = "0";
}
button14.Focus();
}
private void Form1_Load(object sender, EventArgs e)
{
this.KeyPreview = true;
}
private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
switch (e.KeyChar.ToString())
{
case "1": button1_Click(sender, e); break;
case "2": button2_Click(sender, e); break;
case "3": button3_Click(sender, e); break;
