XmlDataProvider用数据填充目标控件时如何在代码背后知道

Question

The title of my question says it already. How can I check if my XmlDataProvider has filled my DataGrid in code behind. It already works, but I want to check when it is finished so I can style the cells in my DataGrid(ForeGround, Background, TextWeight) before the user is able to do/see anything:

public ExcelWindow(string filePath)
{
    InitializeComponent();
    _filePath = filePath;

    Dispatcher.beginInvoke((Action)(() =>
    {
        LoadScreenSettings();
    }));

    LoadXml();

    CellLayoutHandler = new CellLayoutHandler(DataGridXml, _FilePath);
}

private void LoadXml()
{
    XmlDataProvider dataProvider = xmlDataProvider;
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(_FilePath);
    dataProvider.Document = xmlDoc;
    dataProvider.XPath = "Data/Row";
}

Answer 1

1. Use LoadingRow event : Dgrd.LoadingRow += DgrdParent_LoadingRow; , beauty of this event is only visible Rows fire this event, if you scroll down or increase the size of the Window , remaining relevant rows will fire this event.

2. Use HasItems property. This property becomes True only when DataGrid is finished with its ItemsSource .