Question

我有两个名为

的用户控件

欢迎
数据

在一个主窗口中

在第二个用户控件中，我正在使用数据网格。在更改数据网格中的元素时，我必须能够在Welcome用户控件中设置值

在Welcome用户控件

<StackPanel Orientation="Horizontal">
    <Label Content="Name:" FontWeight="Bold" Name="lblClientName" />
    <TextBox Name="txtClientName" Width="85" 
      Background="Transparent" IsReadOnly="True"/>
</StackPanel>

在Data用户控件

private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    // Here on change of this event i must be able to display 
    // data in textbox i.e.txtClientName
}

Answer 1

这是非常简单的事情只需要一些.net框架的基本知识..我希望这可以帮到你。我刚刚在Data usercontrol中创建了一个自定义事件，它会冒泡行事件。

数据用户控制代码：

 public partial class Data : UserControl
    {

        private event EventHandler _RowSelectionChanged;
        public event EventHandler RowSelectionChanged
        {
            add { _RowSelectionChanged += value; }
            remove { _RowSelectionChanged -= value; }
        }

        private void RaiseSelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (_RowSelectionChanged != null)
                _RowSelectionChanged(sender, e);
        }
        public Data()
        {
            InitializeComponent();
        }

        private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            RaiseSelectionChanged(sender, e);
        }

    }

欢迎使用UserControl代码：

 public partial class Welcome : UserControl
    {
        public Welcome()
        {
            InitializeComponent();
        }

        public string ClientName
        {
            get 
            {
                return txtClientName.Text;
            }
            set
            {

                txtClientName.Text = value;

            }
        }
    }

主窗口类：

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
        }

        void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            ucData.RowSelectionChanged += new EventHandler(ucData_RowSelectionChanged);
        }

        void ucData_RowSelectionChanged(object sender, EventArgs e)
        {
            var ev = e as SelectionChangedEventArgs;
            var grid = sender as DataGrid;
            ucWelcome.ClientName = "any thing";
            //this is how you can change Welcome UserControl
        }
    }

问候。

使用in usercontrols迁移值

1 个答案: