如何使用code-背后打造的StackPanel - ＆GT;边框 - ＆GT;背景 [英] How to use code-behind to create StackPanel -> Border -> Background

问题描述

我想设置一个树型视图属性 - > 的StackPanel 在C＃中像<一个href=\"http://stackoverflow.com/questions/8203316/adding-content-to-a-treeviewitem-programmatically?lq=1\">this问题。这似乎使很多的感觉，直到我得到的部分，我尝试在编辑背景我的边框 。在其中国界有背景的对象，但对我的生活，我不能设置彩色或任何东西。这似乎是不一致的，因为我可以添加内容到标签通过简单的说，内容=标题。

I'm trying to set properties of a TreeViewItem -> StackPanel in c# like this question. It seems to make a lot of sense until I get to the part where I try to edit the Background in my Border. Borders have Background objects in them, but for the life of me I can't set a color or anything. It seems to be inconsistent because I can add Content to a Label by simply saying, Content = "Title".

无论如何，这是我的code：

Anyway, this is my code:

public static TreeViewItem childNode = new TreeViewItem() //Child Node 
{
     Header = new StackPanel
     {
         Orientation = Orientation.Horizontal,
         Children =
         {
             new Border {
                 Width = 12,
                 Height = 14,
                 Background = ? //How do I set the background?
             },
             new Label {
                 Content = "Child1"
             }
         }
     }
}; 

PS - 尝试添加​​时，我有同样的问题 BorderBrush

感谢您！

推荐答案

背景属性接受刷。因此，code可以设置颜色如下：

Background property accepts an Brush. Therefore, the code can set the color as follows:

MyLabel.Background = Brushes.Aquamarine;

或者这样：

SolidColorBrush myBrush = new SolidColorBrush(Colors.Red);
MyLabel.Background = myBrush;

要设置任何颜色，你可以使用 BrushConverter ：

To set any color, you can use BrushConverter:

BrushConverter MyBrush = new BrushConverter();

MyLabel.Background = (Brush)MyBrush.ConvertFrom("#ABABAB");

在code设置该属性的一个LinearGradientBrush ：

Setting the property to the LinearGradientBrush in code:

LinearGradientBrush myBrush = new LinearGradientBrush();

myBrush.GradientStops.Add(new GradientStop(Colors.Yellow, 0.0));
myBrush.GradientStops.Add(new GradientStop(Colors.Green, 0.5));
myBrush.GradientStops.Add(new GradientStop(Colors.Red, 1.0));

MyLabel.Background = myBrush;

对你来说应该是这样的：

For you it would look like this:

private void Window_ContentRendered(object sender, EventArgs e)
{
    TreeViewItem childNode = new TreeViewItem()
    {
        Header = new StackPanel
        {
            Orientation = Orientation.Horizontal,

             Children =
             {
                 new Border
                 {
                     Width = 12,
                     Height = 14,
                     Background = Brushes.Yellow, // Set background here
                 },

                 new Label 
                 {
                     Content = "Child1", 
                     Background = Brushes.Pink, // Set background here
                 }
             }
        }
    };

    MyTreeView.Items.Add(childNode);
}

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