2

嗨,我尝试在 wpf 中使用我的第一个设计时数据。我使用以下教程:

http://karlshifflett.wordpress.com/2009/10/21/visual-studio-2010-beta2-sample-data-project-templates/

http://karlshifflett.wordpress.com/2009/10/28/ddesigninstance-ddesigndata-in-visual-studio-2010-beta2/

我创建了简单的数据类,这里是:

public class Avatar:INotifyPropertyChanged
    {
        private string _name;
        private string _surname;

        public string Name
        {
            get { return _name; }
            set
            {
                _name = value;
                NotifyPropertyChanged("Name");
            }
        }

        public string Surname
        {
            get { return _surname; }
            set
            {
                _surname = value;
                NotifyPropertyChanged("Surname");
            }
        }


        public new event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }

    }

然后我创建了示例数据:

<TestForDesignTimeData:Avatar xmlns:TestForDesignTimeData="clr-namespace:TestForDesignTimeData" Name="John" Surname="Smith"/>

并尝试在 wpf 窗口中使用设计时数据:

<Window x:Class="TestForDesignTimeData.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:TestForDesignTimeData="clr-namespace:TestForDesignTimeData"
        mc:Ignorable="d" 
        Title="MainWindow" Height="350" Width="525">

        <StackPanel d:DataContext="{d:DesignInstance TestForDesignTimeData:Avatar}">
            <TextBlock Background="Yellow" Height="40" Width="250"   Text="{Binding Path=Name}"/>
            <TextBlock Background="Yellow" Height="40" Width="250"   Text="{Binding Path=Surname}"/>
    </StackPanel>
</Window>

但我在设计师的空文本框中看到。我做什么坏事?

4

2 回答 2

6

您需要从中创建一个派生类Avatar,将在设计时使用,并在此类的构造函数中定义示例数据:

public class AvatarDesignTime : Avatar
{
   public AvatarDesignTime()
   {
      Name = "John";
      Surname = "Smith";
   }
}

然后您需要指定IsDesignTimeCreatable=TrueDesignInstance 以在设计时启用实例创建(否则您指定的类型仅用于有关类型成员的信息,以便在设计时设置绑定):

<StackPanel d:DataContext="{d:DesignInstance TestForDesignTimeData:AvatarDesignTime, IsDesignTimeCreatable=True}">
于 2011-02-15T10:25:11.933 回答
0

经常为Windows Phone项目这样做,但在使用 MVVM 模式时不必为设计时数据派生一个类。

看法:

<phone:PhoneApplicationPage     
d:DataContext="{d:DesignData ../DesignData/AvatarSampleData.xaml}" .../>

设计时数据 ( AvatarSampleData.xaml ):

<local:AvatarViewModel 
    xmlns="http:schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http:schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:YourNameSpace.ViewModels"

    Name="Harald"
    Surname="Flasch">
</local:AvatarViewModel>

hth, hfrmobile

于 2012-10-04T21:35:30.803 回答