个人中心
文章发布
退出
作者热门文章
- html - 出于某种原因，IE8 对我的 Sass 文件中继承的 html5 CSS 不友好？
- JMeter 在响应断言中使用 span 标签的问题
- html - 在 :hover and :active? 上具有不同效果的 CSS 动画
- html - 相对于居中的 html 内容固定的 CSS 重复背景？
25
4
<分区>
我不明白我在我的 dotButton 中做错了什么，它显示了但没有给出正确的结果？有什么建议吗？
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private bool isFirst = true;
private bool shouldClear = true;
private double num1;
private double num2;
private double result = 0;
private string symbol = string.Empty;
private bool hasDecimal = false;
private void numberButton_Click(object sender, EventArgs e)
{
Button sourceButton = (sender as Button);
double oldNumber, buttonNumber, newNumber;
if (shouldClear)
{
outputTextbox.Clear();
oldNumber = 0;
shouldClear = false;
}
else
{
oldNumber = double.Parse(outputTextbox.Text);
hasDecimal = true;
}
buttonNumber = Double.Parse(sourceButton.Text);
newNumber = (oldNumber * 10) + buttonNumber;
if (isFirst)
{
num1 = newNumber;
}
else
{
num2 = newNumber;
}
outputTextbox.Text += sourceButton.Text;
Calculate(symbol);
}
private void Calculate(string operatorSymbol)
{
if (isFirst)
{
result = num1;
return;
}
switch (operatorSymbol)
{
case "+":
result = num1 + num2;
break;
case "-":
result = num1 - num2;
break;
case "*":
result = num1 * num2;
break;
case "/":
result = num1 / num2;
break;
}
}
private void operatorButton_Click(object sender, EventArgs e)
{
num1 = result;
Button sourceButton = (sender as Button);
string operatorSymbol = sourceButton.Text;
if (isFirst)
isFirst = false;
hasDecimal = true;
shouldClear = true;
symbol = operatorSymbol;
outputTextbox.Text = result.ToString();
}
private void equalsButton_Click(object sender, EventArgs e)
{
outputTextbox.Text = result.ToString();
isFirst = true;
shouldClear = true;
hasDecimal = true;
}
private void clearButton_Click(object sender, EventArgs e)
{
outputTextbox.Text = "0";
result = 0;
isFirst = true;
shouldClear = true;
hasDecimal = false;
}
private void dotButton_Click(object sender, EventArgs e)
{
if (hasDecimal)
hasDecimal = true;
isFirst = false;
shouldClear = true;
outputTextbox.Text = dotButton.Text;
}
}
}
namespace WindowsFormsApplication2
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.zeroButton = new System.Windows.Forms.Button();
this.oneButton = new System.Windows.Forms.Button();
this.twoButton = new System.Windows.Forms.Button();
this.threeButton = new System.Windows.Forms.Button();
this.fourButton = new System.Windows.Forms.Button();
this.fiveButton = new System.Windows.Forms.Button();
this.sixButton = new System.Windows.Forms.Button();
this.sevenButton = new System.Windows.Forms.Button();
this.eightButton = new System.Windows.Forms.Button();
this.nineButton = new System.Windows.Forms.Button();
this.dotButton = new System.Windows.Forms.Button();
this.addButton = new System.Windows.Forms.Button();
this.subtractButton = new System.Windows.Forms.Button();
this.multiplyButton = new System.Windows.Forms.Button();
this.divideButton = new System.Windows.Forms.Button();
this.clearButton = new System.Windows.Forms.Button();
this.equalsButton = new System.Windows.Forms.Button();
this.outputTextbox = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// zeroButton
//
this.zeroButton.Location = new System.Drawing.Point(9, 230);
this.zeroButton.Margin = new System.Windows.Forms.Padding(2);
this.zeroButton.Name = "zeroButton";
this.zeroButton.Size = new System.Drawing.Size(58, 41);
this.zeroButton.TabIndex = 0;
this.zeroButton.Text = "0";
this.zeroButton.UseVisualStyleBackColor = true;
this.zeroButton.Click += new System.EventHandler(this.numberButton_Click);
//
// oneButton
//
this.oneButton.Location = new System.Drawing.Point(9, 184);
this.oneButton.Margin = new System.Windows.Forms.Padding(2);
this.oneButton.Name = "oneButton";
this.oneButton.Size = new System.Drawing.Size(38, 41);
this.oneButton.TabIndex = 1;
this.oneButton.Text = "1";
this.oneButton.UseVisualStyleBackColor = true;
this.oneButton.Click += new System.EventHandler(this.numberButton_Click);
//
// twoButton
//
this.twoButton.Location = new System.Drawing.Point(51, 184);
this.twoButton.Margin = new System.Windows.Forms.Padding(2);
this.twoButton.Name = "twoButton";
this.twoButton.Size = new System.Drawing.Size(38, 41);
this.twoButton.TabIndex = 2;
this.twoButton.Text = "2";
this.twoButton.UseVisualStyleBackColor = true;
this.twoButton.Click += new System.EventHandler(this.numberButton_Click);
//
// threeButton
//
this.threeButton.Location = new System.Drawing.Point(93, 184);
this.threeButton.Margin = new System.Windows.Forms.Padding(2);
this.threeButton.Name = "threeButton";
this.threeButton.Size = new System.Drawing.Size(38, 41);
this.threeButton.TabIndex = 3;
this.threeButton.Text = "3";
this.threeButton.UseVisualStyleBackColor = true;
this.threeButton.Click += new System.EventHandler(this.numberButton_Click);
//
// fourButton
//
this.fourButton.Location = new System.Drawing.Point(9, 139);
this.fourButton.Margin = new System.Windows.Forms.Padding(2);
this.fourButton.Name = "fourButton";
this.fourButton.Size = new System.Drawing.Size(38, 41);
this.fourButton.TabIndex = 4;
this.fourButton.Text = "4";
this.fourButton.UseVisualStyleBackColor = true;
this.fourButton.Click += new System.EventHandler(this.numberButton_Click);
//
// fiveButton
//
this.fiveButton.Location = new System.Drawing.Point(51, 139);
this.fiveButton.Margin = new System.Windows.Forms.Padding(2);
this.fiveButton.Name = "fiveButton";
this.fiveButton.Size = new System.Drawing.Size(38, 41);
this.fiveButton.TabIndex = 5;
this.fiveButton.Text = "5";
this.fiveButton.UseVisualStyleBackColor = true;
this.fiveButton.Click += new System.EventHandler(this.numberButton_Click);
//
// sixButton
//
this.sixButton.Location = new System.Drawing.Point(93, 139);
this.sixButton.Margin = new System.Windows.Forms.Padding(2);
this.sixButton.Name = "sixButton";
this.sixButton.Size = new System.Drawing.Size(38, 41);
this.sixButton.TabIndex = 6;
this.sixButton.Text = "6";
this.sixButton.UseVisualStyleBackColor = true;
this.sixButton.Click += new System.EventHandler(this.numberButton_Click);
//
// sevenButton
//
this.sevenButton.Location = new System.Drawing.Point(9, 93);
this.sevenButton.Margin = new System.Windows.Forms.Padding(2);
this.sevenButton.Name = "sevenButton";
this.sevenButton.Size = new System.Drawing.Size(38, 41);
this.sevenButton.TabIndex = 7;
this.sevenButton.Text = "7";
this.sevenButton.UseVisualStyleBackColor = true;
this.sevenButton.Click += new System.EventHandler(this.numberButton_Click);
//
// eightButton
//
this.eightButton.Location = new System.Drawing.Point(51, 93);
this.eightButton.Margin = new System.Windows.Forms.Padding(2);
this.eightButton.Name = "eightButton";
this.eightButton.Size = new System.Drawing.Size(38, 41);
this.eightButton.TabIndex = 8;
this.eightButton.Text = "8";
this.eightButton.UseVisualStyleBackColor = true;
this.eightButton.Click += new System.EventHandler(this.numberButton_Click);
//
// nineButton
//
this.nineButton.Location = new System.Drawing.Point(93, 93);
this.nineButton.Margin = new System.Windows.Forms.Padding(2);
this.nineButton.Name = "nineButton";
this.nineButton.Size = new System.Drawing.Size(38, 41);
this.nineButton.TabIndex = 9;
this.nineButton.Text = "9";
this.nineButton.UseVisualStyleBackColor = true;
this.nineButton.Click += new System.EventHandler(this.numberButton_Click);
//
// dotButton
//
this.dotButton.Location = new System.Drawing.Point(72, 230);
this.dotButton.Margin = new System.Windows.Forms.Padding(2);
this.dotButton.Name = "dotButton";
this.dotButton.Size = new System.Drawing.Size(58, 41);
this.dotButton.TabIndex = 10;
this.dotButton.Text = ".";
this.dotButton.UseVisualStyleBackColor = true;
this.dotButton.Click += new System.EventHandler(this.dotButton_Click);
//
// addButton
//
this.addButton.Location = new System.Drawing.Point(135, 230);
this.addButton.Margin = new System.Windows.Forms.Padding(2);
this.addButton.Name = "addButton";
this.addButton.Size = new System.Drawing.Size(38, 41);
this.addButton.TabIndex = 11;
this.addButton.Text = "+";
this.addButton.UseVisualStyleBackColor = true;
this.addButton.Click += new System.EventHandler(this.operatorButton_Click);
//
// subtractButton
//
this.subtractButton.Location = new System.Drawing.Point(135, 184);
this.subtractButton.Margin = new System.Windows.Forms.Padding(2);
this.subtractButton.Name = "subtractButton";
this.subtractButton.Size = new System.Drawing.Size(38, 41);
this.subtractButton.TabIndex = 12;
this.subtractButton.Text = "-";
this.subtractButton.UseVisualStyleBackColor = true;
this.subtractButton.Click += new System.EventHandler(this.operatorButton_Click);
//
// multiplyButton
//
this.multiplyButton.Location = new System.Drawing.Point(135, 139);
this.multiplyButton.Margin = new System.Windows.Forms.Padding(2);
this.multiplyButton.Name = "multiplyButton";
this.multiplyButton.Size = new System.Drawing.Size(38, 41);
this.multiplyButton.TabIndex = 13;
this.multiplyButton.Text = "*";
this.multiplyButton.UseVisualStyleBackColor = true;
this.multiplyButton.Click += new System.EventHandler(this.operatorButton_Click);
//
// divideButton
//
this.divideButton.Location = new System.Drawing.Point(135, 93);
this.divideButton.Margin = new System.Windows.Forms.Padding(2);
this.divideButton.Name = "divideButton";
this.divideButton.Size = new System.Drawing.Size(38, 41);
this.divideButton.TabIndex = 14;
this.divideButton.Text = "/";
this.divideButton.UseVisualStyleBackColor = true;
this.divideButton.Click += new System.EventHandler(this.operatorButton_Click);
//
// clearButton
//
this.clearButton.Location = new System.Drawing.Point(9, 48);
this.clearButton.Margin = new System.Windows.Forms.Padding(2);
this.clearButton.Name = "clearButton";
this.clearButton.Size = new System.Drawing.Size(80, 41);
this.clearButton.TabIndex = 15;
this.clearButton.Text = "Clear";
this.clearButton.UseVisualStyleBackColor = true;
this.clearButton.Click += new System.EventHandler(this.clearButton_Click);
//
// equalsButton
//
this.equalsButton.Location = new System.Drawing.Point(93, 48);
this.equalsButton.Margin = new System.Windows.Forms.Padding(2);
this.equalsButton.Name = "equalsButton";
this.equalsButton.Size = new System.Drawing.Size(80, 41);
this.equalsButton.TabIndex = 16;
this.equalsButton.Text = "=";
this.equalsButton.UseVisualStyleBackColor = true;
this.equalsButton.Click += new System.EventHandler(this.equalsButton_Click);
//
// outputTextbox
//
this.outputTextbox.Location = new System.Drawing.Point(9, 3);
this.outputTextbox.Margin = new System.Windows.Forms.Padding(2);
this.outputTextbox.Multiline = true;
this.outputTextbox.Name = "outputTextbox";
this.outputTextbox.Size = new System.Drawing.Size(164, 41);
this.outputTextbox.TabIndex = 17;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(184, 280);
this.Controls.Add(this.outputTextbox);
this.Controls.Add(this.equalsButton);
this.Controls.Add(this.clearButton);
this.Controls.Add(this.divideButton);
this.Controls.Add(this.multiplyButton);
this.Controls.Add(this.subtractButton);
this.Controls.Add(this.addButton);
this.Controls.Add(this.dotButton);
this.Controls.Add(this.nineButton);
this.Controls.Add(this.eightButton);
this.Controls.Add(this.sevenButton);
this.Controls.Add(this.sixButton);
this.Controls.Add(this.fiveButton);
this.Controls.Add(this.fourButton);
this.Controls.Add(this.threeButton);
this.Controls.Add(this.twoButton);
this.Controls.Add(this.oneButton);
this.Controls.Add(this.zeroButton);
this.Margin = new System.Windows.Forms.Padding(2);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button zeroButton;
private System.Windows.Forms.Button oneButton;
private System.Windows.Forms.Button twoButton;
private System.Windows.Forms.Button threeButton;
private System.Windows.Forms.Button fourButton;
private System.Windows.Forms.Button fiveButton;
private System.Windows.Forms.Button sixButton;
private System.Windows.Forms.Button sevenButton;
private System.Windows.Forms.Button eightButton;
private System.Windows.Forms.Button nineButton;
private System.Windows.Forms.Button dotButton;
private System.Windows.Forms.Button addButton;
private System.Windows.Forms.Button subtractButton;
private System.Windows.Forms.Button multiplyButton;
private System.Windows.Forms.Button divideButton;
private System.Windows.Forms.Button clearButton;
private System.Windows.Forms.Button equalsButton;
private System.Windows.Forms.TextBox outputTextbox;
}
}
0
所以我有这个 javascript 片段，它有两个按钮可以进入全屏，一个按钮可以退出全屏。我想做到这一点，如果我不在全屏模式下，按钮会显示转到全屏模式，而当我处于全屏模式时，按钮会显示退出全屏模式..
我在自定义控件中添加了一个新属性作为可扩展属性，例如属性网格中的字体属性。在 Windows 窗体应用程序项目中使用我的自定义控件后，我在属性网格中看到一个省略号 (…) 按钮，如字体属性的“…”按钮
我在自定义控件中添加了一个新属性作为可扩展属性，例如属性网格中的字体属性。在 Windows 窗体应用程序项目中使用我的自定义控件后，我在属性网格中看到一个省略号 (…) 按钮，如字体属性的“…”按钮
我尝试将 Twitter 上的“Tweet Me”按钮 ( http://twitter.com/goodies/tweetbutton ) 添加到我的网站。然而，每当按下按钮时，我都会收到此 Jav
我试图在我的文本区域中获取一个按钮值，如果我使用 则工作正常但如果我使用那么它就不起作用了。你能找出问题所在吗？ HTML 1 2 3 4 JavaScript $(document).read
我的 C# Winform 面板中有一堆文本框。每行文本框的命名如下: tb1 tbNickName1 comboBox1 tb2 tbNickName2 comboBox2 tb3 tbNickNa
我有一个表单，其中过滤器下方有按钮(应用过滤器和清除过滤器)，我试图在单击“应用”按钮时显示“清除”，并在单击“清除”按钮时隐藏“清除”按钮。 下面的代码(如果我的表有的话):
excel 按钮正在工作，但是当我添加 pdf 按钮时，它添加仅显示 pdf 按钮 excel 按钮在 pdf 按钮添加后隐藏 $(document).ready(function() { $
我想创建一个 div 作为标题并分成 3 列，并按以下顺序在其中放置 2 个按钮和一个标题:Button1(左位) Title(居中) Button2(右位) 这是我为这个 div 编写的代码:
仅当选中所有框时才应禁用“允许”按钮。我该怎么做？我已经完成了 HTML 部分，如下所示。如何执行其中的逻辑部分？即使未选中一个复选框，也应禁用“允许”按钮
很难说出这里问的是什么。这个问题是含糊的、模糊的、不完整的、过于宽泛的或修辞性的，无法以目前的形式得到合理的回答。如需帮助澄清此问题以便重新打开它，visit the help center 。 已关
如您所知，您可以使用 2 种方法在 HTML5 中呈现按钮: 使用 void 元素 或 如果您需要内容，请使用 元素(不是空元素)。 在JSF2中，有2种方式生成按钮；与UICommand或 UIOu
我尝试根据表单元素的更改禁用/启用保存按钮。但是，当通过弹出按钮选择更改隐藏输入字段值时，保存按钮不受影响。 下面是我的代码。我正在尝试序列化旧的表单值并与更改后的表单值进行比较。但我猜隐藏的字段值无
我有用于在消息(电子邮件、短信)上输入内容的 EditText。我希望在单击 ActionDone 按钮时立即发布消息。我为此使用以下代码: message.setOnEditorActionList
我的 Android 应用程序中有一堆 EditText，每个都将 InputMethod 设置为 numberSigned。我的目标设备没有硬件键盘，而是使用软件键盘输入数字。 Android 将输
我无法以编程方式隐藏弧形菜单中的 fab 按钮。我正在使用https://github.com/saurabharora90/MaterialArcMenu在我的代码中。如何在Java中以编程方式隐藏
我已经看到这在其他类型的对话框窗口中是可能的，例如“showConfirmDialog”，其中可以指定按钮的数量及其名称；但是使用“showInputDialog”时是否可以实现相同的功能？我似乎无法
相同的按钮用于激活和停用。第一次，当代码运行按钮单击并成功“停用”时。但第二次，代码无法找到该元素。第一个案例按钮位于第二个“a”标签中，然后停用第一个“a”标签中的按钮。 案例1: Edit
是否可以将按钮的 onclick 操作设置为 JavaScript 变量？这个想法是我们用 JavaScript 控制一个表。每当点击该表的一行时，我们就会更新一个 JavaScript 变量。该 v
我想创建一个按钮，它包含左侧的文本和右侧的复选框(或任何其他组件)。我怎样才能做到这一点？ 我发现我可以制作自己的 View extends Button，但是如果可以的话我应该如何实现 onDraw
我是一名优秀的程序员,十分优秀！