Wpf 我可以绑定到数组'；什么项目？（索引器和项目）

答案

它应该可以正常工作。您是否尝试过简化您的场景？用户控件等之间可能存在数据上下文混淆

具有以下控件的简单页面

下面的代码按照预期工作

string[] fruits = new string[] { "apple", "banana", "orange", "etc" };

public string[] Fruits
{
    get { return fruits; }
    set { fruits = value; }
} 

public ApplicationPresenter(MainPage mainpage0, Adatok adatok0)
{
    startPage = mainpage0;
    startPage.DataContext = this;
    uc_adatok = adatok0;
    uc_adatok.DataContext = this;
    Binding binding = new Binding(/*at here, May I set the property's item?
        I imagine this for example "Fruits[0]" but it doesn't work*/);
    BindingOperations.SetBinding(uc_adatok.Mennyiseg, TextBox.TextProperty, binding);
}

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它应该很好用。您是否尝试过简化您的场景？用户控件等之间可能存在数据上下文混淆

具有以下控件的简单页面

下面的代码按照预期工作

string[] fruits = new string[] { "apple", "banana", "orange", "etc" };

public string[] Fruits
{
    get { return fruits; }
    set { fruits = value; }
} 

public ApplicationPresenter(MainPage mainpage0, Adatok adatok0)
{
    startPage = mainpage0;
    startPage.DataContext = this;
    uc_adatok = adatok0;
    uc_adatok.DataContext = this;
    Binding binding = new Binding(/*at here, May I set the property's item?
        I imagine this for example "Fruits[0]" but it doesn't work*/);
    BindingOperations.SetBinding(uc_adatok.Mennyiseg, TextBox.TextProperty, binding);
}