所以我一直在這裏一段時間,仍然無法讓我的計算器做最後一件事。讓我的計算器在按下相同的按鈕後拍一個新號碼
我明白了,謝謝!
當我按下相同的按鈕或Tan,Sin,Cos或Mod按鈕後,我希望我的計算器拍攝一個新的數字。基本上就好像文本框中沒有任何內容,即使答案仍然存在。目前,所有的號碼保持不變,新的號碼被添加到最後。我不希望發生這種情況。
計算後,如果我按下數字按鈕,我希望它清除屏幕並添加新的數字。以下是我迄今爲止的代碼。
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Double FirstNumber;
string mathOperator = "";
private void AddButton_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
mathOperator = "+";
DisplayTextBox.Text = "";
DisplayTextBox.Focus();
}
private void EqualButton_Click(object sender, EventArgs e)
{
Double SecondNumber;
SecondNumber = Convert.ToDouble(DisplayTextBox.Text);
switch (mathOperator)
{
case "+":
DisplayTextBox.Text = (FirstNumber + SecondNumber).ToString();
break;
case "-":
DisplayTextBox.Text = (FirstNumber - SecondNumber).ToString();
break;
case "*":
DisplayTextBox.Text = (FirstNumber * SecondNumber).ToString();
break;
case "/":
DisplayTextBox.Text = (FirstNumber/SecondNumber).ToString();
break;
default:
break;
}
}
private void button12_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
FirstNumber *= -1;
DisplayTextBox.Text = FirstNumber.ToString();
}
private void ButtonMinus_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
mathOperator = "-";
DisplayTextBox.Text = "";
DisplayTextBox.Focus();
}
private void ButtonMultiply_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
mathOperator = "*";
DisplayTextBox.Text = "";
DisplayTextBox.Focus();
}
private void ButtonDivide_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
mathOperator = "/";
DisplayTextBox.Text = "";
DisplayTextBox.Focus();
}
private void ButtonMod_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
DisplayTextBox.Text = Math.Tan(FirstNumber).ToString();
}
private void Button1_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "1";
}
private void Button2_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "2";
}
private void Button3_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "3";
}
private void Button4_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "4";
}
private void Button5_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "5";
}
private void Button6_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "6";
}
private void Button7_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "7";
}
private void Button8_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "8";
}
private void Button9_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = DisplayTextBox.Text + "9";
}
private void ButtonClear_Click(object sender, EventArgs e)
{
DisplayTextBox.Text = "";
mathOperator = "";
}
private void ButtonOff_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void ButtonTan_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
DisplayTextBox.Text = Math.Tan(FirstNumber).ToString();
}
private void ButtonSin_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
DisplayTextBox.Text = Math.Sin(FirstNumber).ToString();
}
private void ButtonCos_Click(object sender, EventArgs e)
{
FirstNumber = Convert.ToDouble(DisplayTextBox.Text);
DisplayTextBox.Text = Math.Cos(FirstNumber).ToString();
}
private void Button0_Click(object sender, EventArgs e)
{
if (DisplayTextBox.Text.Length >= 1)
{
DisplayTextBox.Text = DisplayTextBox.Text + "0";
}
else
{
return;
}
}
private void DecimalButton_Click(object sender, EventArgs e)
{
if (DisplayTextBox.Text.Contains("."))
{
return;
}
else
{
DisplayTextBox.Text = DisplayTextBox.Text + ".";
}
}
}
請,只提供了小片的一種再現你的問題的代碼。我想知道是否有人會讀這個代碼轉儲到最後 –
爲什麼不實現一個C或CC按鈕(或兩者)? – bhs
@bhs OP的問題是當他鍵入'1 + 2'時,他顯示'12'而不是'2',因爲'1'沒有被刪除,它應該是。 – Dialecticus