实例介绍
【实例简介】
四则运算
【实例截图】
【核心代码】
private void LoadComponent() { eOperator = EOperator.NONE; splitIndex = 0; textBoxShow = (TextBox)LogicalTreeHelper.FindLogicalNode(dependencyObject, "textBox"); // 功能按键 btnClear = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "btnClear"); btnClear.Click = OnButtonClearClick; btnEqual = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "btnEqual"); btnEqual.Click = OnButtonEqualClick; btnOff = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "btnOff"); btnOff.Click = OnButtonOffClick; btnDelete = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "btnDelete"); btnDelete.Click = OnButtonDeleteClick; // 运算按键 arrayBtnOperator = new Button[4]; for (int i = 0; i < 4; i) { arrayBtnOperator[i] = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "operator" i.ToString()); arrayBtnOperator[i].Click = OnButtonOperatorClick; } // 数字按键 arrayBtnNumber = new Button[10]; for (int i=0; i<=9; i) { arrayBtnNumber[i] = (Button)LogicalTreeHelper.FindLogicalNode(dependencyObject, "number" i.ToString()); arrayBtnNumber[i].Click = OnButtonNumberClick; } } private void InitializeComponent() { //// 设置窗体 //this.Width = 480; //this.Height = 320; //this.Left = this.Top = 100; //this.Title = "Code-Only Window"; //// 创建停靠面板对象 //DockPanel dockPanel = new DockPanel(); //// 创建按钮对象 //button = new Button(); //button.Content = "Start"; //button.Margin = new Thickness(50); //button.Click = ButtonClick; //MediaElement mediaElement = new MediaElement(); //System.Uri uri = new System.Uri("F:/音乐/蔡依林&&周杰伦 - 布拉格广场.mp3"); //mediaElement.Source = uri; //mediaElement.Stretch = System.Windows.Media.Stretch.Fill; //IAddChild container = dockPanel; //container.AddChild(button); //// container.AddChild(mediaElement); //container = this; //container.AddChild(dockPanel); } private void OnButtonNumberClick(object sender, RoutedEventArgs e) { Button btn = (Button)sender; textBoxShow.Text = btn.Content.ToString(); } private void OnButtonClearClick(object sender, RoutedEventArgs e) { textBoxShow.Text = ""; } private void OnButtonOperatorClick(object sender, RoutedEventArgs e) { if (eOperator != EOperator.NONE) { OnButtonEqualClick(null, null); } Button btn = (Button)sender; if (textBoxShow.Text.Length == 0) { textBoxShow.Text = "0"; } textBoxShow.Text = btn.Content.ToString(); splitIndex = textBoxShow.Text.Length - 1; switch(btn.Content.ToString()) { case " ": eOperator = EOperator.ADD; break; case "-": eOperator = EOperator.SUB; break; case "*": eOperator = EOperator.MUL; break; case "/": eOperator = EOperator.DIV; break; } } private void OnButtonEqualClick(object sender, RoutedEventArgs e) { if (eOperator == EOperator.NONE) return; if (splitIndex == textBoxShow.Text.Length - 1) { textBoxShow.Text = "0"; } Operation operation = OperationFactory.CreateOperation(eOperator); string strA = textBoxShow.Text.Substring(0, splitIndex); string strB = textBoxShow.Text.Substring(splitIndex 1); if (strA == "" || strB == "") { return; } operation.NumberA = Convert.ToDouble(strA); operation.NumberB = Convert.ToDouble(strB); textBoxShow.Text = operation.GetResult().ToString(); eOperator = EOperator.NONE; } private void OnButtonOffClick(object sender, RoutedEventArgs e) { Application.Current.Shutdown(); } private void OnButtonDeleteClick(object sender, RoutedEventArgs e) { if (textBoxShow.Text.Length > 0) { textBoxShow.Text = textBoxShow.Text.Substring(0, textBoxShow.Text.Length-1); } }
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