BitmapImage.IsDownloading Properti

Definisi

Ruang nama:

System.Windows.Media.Imaging

Rakitan:

PresentationCore.dll

Mendapatkan nilai yang menunjukkan apakah BitmapImage konten sedang diunduh.

public:
 virtual property bool IsDownloading { bool get(); };

public override bool IsDownloading { get; }

member this.IsDownloading : bool

Public Overrides ReadOnly Property IsDownloading As Boolean

Nilai Properti

Boolean

true BitmapImage jika sedang mengunduh konten; jika tidak, false.

Contoh

Contoh kode berikut menunjukkan cara memeriksa nilai IsDownloading properti dengan menggunakan kode. Nilai properti dipancarkan ke MessageBox sebagai String.

// Define a BitmapImage.
Image myImage = new Image();
BitmapImage bi = new BitmapImage();

// Begin initialization.
bi.BeginInit();

// Set properties.
bi.CacheOption = BitmapCacheOption.OnDemand;
bi.CreateOptions = BitmapCreateOptions.DelayCreation;
bi.DecodePixelHeight = 125;
bi.DecodePixelWidth = 125;
bi.Rotation = Rotation.Rotate90;
MessageBox.Show(bi.IsDownloading.ToString());
bi.UriSource = new Uri("smiley.png", UriKind.Relative);

// End initialization.
bi.EndInit();
myImage.Source = bi;
myImage.Stretch = Stretch.None;
myImage.Margin = new Thickness(5);

' Define a BitmapImage.
Dim myImage As New Image()
Dim bi As New BitmapImage()

' Begin initialization.
bi.BeginInit()

' Set properties.
bi.CacheOption = BitmapCacheOption.OnDemand
bi.CreateOptions = BitmapCreateOptions.DelayCreation
bi.DecodePixelHeight = 125
bi.DecodePixelWidth = 125
bi.Rotation = Rotation.Rotate90
MessageBox.Show(bi.IsDownloading.ToString())
bi.UriSource = New Uri("smiley.png", UriKind.Relative)

' End initialization.
bi.EndInit()
myImage.Source = bi
myImage.Stretch = Stretch.None
myImage.Margin = New Thickness(5)