我正在更新數據透視查看器應用程序並遇到以下問題。希望有人會因爲我被卡住而得到答案。如果太多的pivotviewer屬性,PivotViewer不顯示圖像
問題:頁面加載時,具有屬性和其他功能的一面加載正常,但交易卡不加載任何圖像。其中一些人加載默認的白色背景,而大多數人顯示深灰色,幾乎黑色的背景。所有這些都可以放大並顯示所有屬性,但沒有圖像。
調試:我發現註釋掉某些屬性會導致圖像每次都能正確加載。如果我僅註釋掉1或2,那麼圖像將會加載一些時間(10頁刷新中的大約2次)。目前,列表中包含29個屬性,數據正在從數據庫中加載,然後在pivotviewer.ItemsSource中使用。
任何想法?
代碼一些名稱的變化(在方案二一個是一個與性能我註釋掉):
MainPage.xaml.cs中
public MainPage()
{
InitializeComponent();
PivotViewModel pivotModel = new PivotViewModel();
CollectionsComboBox.SelectedIndex = 0;
this.DataContext = pivotModel;
}
private void DropDown_ItemSelected(object sender, EventArgs e)
{
// Process selected index change here
if (((ComboBox)sender).SelectedValue == "Option One")
{
OptionOnePivotViewModel OptionOnePivot = new OptionOnePivotViewModel();
PivotViewer.ItemsSource = OptionOnePivot.Data;
PivotViewer.PivotProperties = OptionOnePivot.PivotProperties;
PivotViewer.ItemTemplates = OptionOnePivot.TemplateCollection;
PivotViewer.ItemAdornerStyle = blankAdorner;
}
else
{
OptionTwoPivotViewModel OptionTwoPivot = new OptionTwoPivotViewModel();
PivotViewer.ItemsSource = OptionTwoPivot.Data;
PivotViewer.PivotProperties = OptionTwoPivot.PivotProperties;
PivotViewer.ItemAdornerStyle = basicAdorner;
PivotViewer.ItemTemplates = OptionTwoPivot.TemplateCollection;
}
}
OptionTwoPivotViewModel.cs:
public OptionTwoPivotViewModel()
{
DomainContext = new OptionTwoDomainContext();
Data = DomainContext.Load(DomainContext.GetHRDatasQuery()).Entities;
PivotProperties = getPivotProperties();
SmallTemplate = "EmpSmall";
TemplateCollection = new PivotViewerItemTemplateCollection()
{
(PivotViewerItemTemplate) Application.Current.Resources[SmallTemplate]
};
}
private List<PivotViewerProperty> getPivotProperties()
{
List<PivotViewerProperty> properties = new List<PivotViewerProperty>
{
new PivotViewerStringProperty{ Id="Name", Options=PivotViewerPropertyOptions.CanSearchText, DisplayName="Name", Binding=new System.Windows.Data.Binding("Name")},
new PivotViewerStringProperty{ Id="Status", Options=PivotViewerPropertyOptions.CanFilter, DisplayName="Status", Binding=new System.Windows.Data.Binding("Status")},
new PivotViewerDateTimeProperty{ Id="StartDate", Options=PivotViewerPropertyOptions.CanFilter, DisplayName="Start Date", Binding=new System.Windows.Data.Binding("StartDate")},
//additional properties follow...
};
return properties;
編輯:我注意到,如果我在下面的屬性getter中設置斷點,然後繼續圖像也加載正常。
public ImageSource BackgroundImage
{
get
{
string location = Image_Location;
location = location.Substring(location.LastIndexOf("/"));
Uri uri;
if (Image_Location.Contains(".gif"))
{
uri = new Uri(Image_Location, UriKind.Absolute);
}
else
{
var host = Application.Current.Host.Source.Host;
uri = new Uri("https://" + host + "/fileLibrary/employees/images/500"+location, UriKind.RelativeOrAbsolute);
}
// set the image source
BitmapImage bmpImg = new BitmapImage(uri);
_loaded = _backgroundImage != null;
if (!_loaded)
{
bmpImg.ImageOpened += ImageOpened;
bmpImg.ImageFailed += ImageFailed;
}
return new BitmapImage(uri);
}
你可以添加你的代碼的問題? – matsjoyce 2014-10-09 16:48:04
已添加。讓我知道你是否需要額外的代碼部分。 – Trinak 2014-10-09 17:48:29