C# ItemControl：根据“更改ItemControl中控件的属性”；内容“；控制

我有以下代码

在我的示例中，我使用

ItemControl

显示按钮。 现在，我需要根据其内容访问特定按钮 改变它的性质

例如，当单击

ChangeBackGround

按钮时，我需要更改

first

按钮的

Background

属性。[请参见下面我的问题的屏幕截图]

查看以下代码和屏幕截图：

public partial class MainWindow : Window
    {
        private ObservableCollection<Data> dataCollection ;

        public MainWindow()
        {
            InitializeComponent();
            dataCollection = new ObservableCollection<Data>();

            dataCollection.Add(new Data("first"));
            dataCollection.Add(new Data("second"));
            dataCollection.Add(new Data("third"));
            dataCollection.Add(new Data("forth"));
            this.DataContext = this;
        }

        public ObservableCollection<Data> DataCollection
        {
            get
            {
                return this.dataCollection;
            }
            set
            {
                this.dataCollection = value;
            }
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //I need to change Background of Perticular Button
            //Based On Content of Button [Here that is "first", "second", "third", "forth"]

            //How to change the color of perticular button based on Content of Button?
        }
    }

    public class Data 
    {
        private string dataToPresent;

        public Data()
        {

        }
        public Data(string dataArg)
        {
            this.dataToPresent = dataArg;
        }
        public string DataToPresent 
        {
            get
            {
                return this.dataToPresent;
            }
            set
            {
                this.dataToPresent = value;
            }
        }
    }

XAML：

代码隐藏：

public partial class MainWindow : Window
    {
        private ObservableCollection<Data> dataCollection ;

        public MainWindow()
        {
            InitializeComponent();
            dataCollection = new ObservableCollection<Data>();

            dataCollection.Add(new Data("first"));
            dataCollection.Add(new Data("second"));
            dataCollection.Add(new Data("third"));
            dataCollection.Add(new Data("forth"));
            this.DataContext = this;
        }

        public ObservableCollection<Data> DataCollection
        {
            get
            {
                return this.dataCollection;
            }
            set
            {
                this.dataCollection = value;
            }
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //I need to change Background of Perticular Button
            //Based On Content of Button [Here that is "first", "second", "third", "forth"]

            //How to change the color of perticular button based on Content of Button?
        }
    }

    public class Data 
    {
        private string dataToPresent;

        public Data()
        {

        }
        public Data(string dataArg)
        {
            this.dataToPresent = dataArg;
        }
        public string DataToPresent 
        {
            get
            {
                return this.dataToPresent;
            }
            set
            {
                this.dataToPresent = value;
            }
        }
    }

公共部分类主窗口：窗口
{
私有可观察收集数据收集；
公共主窗口（）
{
初始化组件（）；
dataCollection=新的ObservableCollection（）；
数据收集。添加（新数据（“第一”）；
数据收集。添加（新数据（“第二”）；
数据收集。添加（新数据（“第三”）；
数据收集。添加（新数据（“第四”）；
this.DataContext=this；
}
公共可观测收集数据收集
{
收到
{
返回此.dataCollection；
}
设置
{
this.dataCollection=值；
}
}
私有无效按钮1\u单击（对象发送者，路由目标）
{
//我需要更改光圈按钮的背景
//基于按钮的内容[此处为“第一”、“第二”、“第三”、“第四”]
//如何根据按钮的内容更改垂直按钮的颜色？
}
}
公共类数据
{
私有字符串dataToPresent；
公共数据（）
{
}
公共数据（字符串dataArg）
{
this.dataToPresent=dataArg；
}
公共字符串DataToPresent
{
收到
{
返回this.dataToPresent；
}
设置
{
this.dataToPresent=值；
}
}
}

屏幕截图：

public partial class MainWindow : Window
    {
        private ObservableCollection<Data> dataCollection ;

        public MainWindow()
        {
            InitializeComponent();
            dataCollection = new ObservableCollection<Data>();

            dataCollection.Add(new Data("first"));
            dataCollection.Add(new Data("second"));
            dataCollection.Add(new Data("third"));
            dataCollection.Add(new Data("forth"));
            this.DataContext = this;
        }

        public ObservableCollection<Data> DataCollection
        {
            get
            {
                return this.dataCollection;
            }
            set
            {
                this.dataCollection = value;
            }
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //I need to change Background of Perticular Button
            //Based On Content of Button [Here that is "first", "second", "third", "forth"]

            //How to change the color of perticular button based on Content of Button?
        }
    }

    public class Data 
    {
        private string dataToPresent;

        public Data()
        {

        }
        public Data(string dataArg)
        {
            this.dataToPresent = dataArg;
        }
        public string DataToPresent 
        {
            get
            {
                return this.dataToPresent;
            }
            set
            {
                this.dataToPresent = value;
            }
        }
    }

示例：

var buttonFirst = FindVisualChildren<Button>(itemControlProblem)
    .Single(b => b.Content.ToString() == "first");
buttonFirst.Background = Brushes.Yellow;

for（int i=0；i

---

这是可行的，但我不建议这样做，设置一个带有后台属性的viewmodel，然后绑定它会更干净。

使用此方法查找可视子对象：

public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
    if (depObj != null)
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
        {
            DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
            if (child != null && child is T)
            {
                yield return (T)child;
            }

            foreach (T childOfChild in FindVisualChildren<T>(child))
            {
                yield return childOfChild;
            }
        }
    }
}

公共静态IEnumerable FindVisualChildren（DependencyObject depObj），其中T:DependencyObject
{
if（depObj！=null）
{
for（int i=0；i

例如：

var buttonFirst = FindVisualChildren<Button>(itemControlProblem)
    .Single(b => b.Content.ToString() == "first");
buttonFirst.Background = Brushes.Yellow;

var buttonFirst=FindVisualChildren（itemControlProblem）
.Single（b=>b.Content.ToString（）=“first”）；
buttonFirst.Background=画笔.黄色；