WPF中动态改变控件显示位置

转自 http://blog.csdn.net/lassewang/article/details/6928897

测试环境: Windows XP/Windows 7

开发环境: Microsoft Expression Blend 4 + Microsofot Visual Studio 2008 + .Net FrameWork 4.0

步骤一:

使用Blend4建立一个WPF应用程序

步骤二:

将窗体上的窗体布局控件换成Canvas控件

步骤三:

在Canvas控件上增加两个按钮以及一个ListView控件,分别命名为DMItem, FileManager, RemoteManager, 这三个按钮的位置为竖形排放(最上面为Button,中间为ListVIew, 下面为Button), 默认情况下ListView是不可见的

步骤四:

给DMItem按钮增加一个鼠标点击事件,并按照如下代码编写

     private void DirectoryManager_Click(object sender, RoutedEventArgs e)
        {
            double dtop = 14;

            if (!b_IsShowDMP)
            {
                this.DMItem.Visibility = System.Windows.Visibility.Visible;
                this.DMItem.SetValue(Canvas.LeftProperty, (double)10);
                dtop += this.DirectoryManager.Height;
                this.DMItem.SetValue(Canvas.TopProperty, dtop);
                dtop += this.DMItem.Height + 3;
                this.FileManager.SetValue(Canvas.TopProperty, dtop);
                dtop += this.FileManager.Height + 3;
                this.RemoteManager.SetValue(Canvas.TopProperty, dtop);

                b_IsShowDMP = true;
            }
            else
            {
                this.DMItem.Visibility = System.Windows.Visibility.Hidden;
                dtop += this.DirectoryManager.Height + 3;
                this.FileManager.SetValue(Canvas.TopProperty, dtop);
                dtop += this.FileManager.Height + 3;
                this.RemoteManager.SetValue(Canvas.TopProperty, dtop);           

                b_IsShowDMP = false;
            }
       }