web信息管理課程（3）:ASP.NET編寫簡單的加減法計算器

控件設置

拖動textbutton控件，用于顯示

拖動Button控件，組成數字和符號鍵盤，

添加好后可以手動拖動控件調整大小，效果如下：

form標簽源碼為：

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編寫計算代碼

public partial class WebForm1 : System.Web.UI.Page { static string num1 = "0", num2 = "0", total = "", sign = ""; // 數字1按鈕 protected void btnone_Click(object sender, EventArgs e) { total += "1"; txtDisplay.Text = total; } // 數字2按鈕 protected void btnTwo_Click(object sender, EventArgs e) { total += "2"; txtDisplay.Text = total; } // 數字3 按鈕 protected void btnThree_Click(object sender, EventArgs e) { total += "3"; txtDisplay.Text = total; } // 加法按鈕 protected void btnAdd_Click(object sender, EventArgs e) { if (sign.Length == 1) { Count(); num1 = txtDisplay.Text; sign = "+"; } else { num1 = txtDisplay.Text; txtDisplay.Text = ""; total = ""; sign = "+"; } } //減法按鈕 protected void btnSubtract_Click(object sender, EventArgs e) { if (sign.Length == 1) { Count(); num1 = txtDisplay.Text; sign = "-"; } else { num1 = txtDisplay.Text; txtDisplay.Text = ""; total = ""; sign = "-"; } } // 等于按鈕 protected void btnEqual_Click(object sender, EventArgs e) { Count(); } // 函數定義 protected void Count() { num2 = txtDisplay.Text; if (num2 == "") { num2 = "0"; } switch (sign) { case "+": txtDisplay.Text = (int.Parse(num1) + int.Parse(num2)).ToString(); num1 = "0"; num2 = "0"; total = ""; sign = ""; break; case "-": txtDisplay.Text = (int.Parse(num1) - int.Parse(num2)).ToString(); num1 = "0"; num2 = "0"; total = ""; sign = ""; break; } }

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測試

ASP ASP.NET

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