TiffBitmapDecoder 建構函式

定義

命名空間:

System.Windows.Media.Imaging

組件:

PresentationCore.dll

初始化 TiffBitmapDecoder 類別的新執行個體。

多載

TiffBitmapDecoder(Stream, BitmapCreateOptions, BitmapCacheOption)	使用指定的 createOptions 和 cacheOption，從指定的檔案資料流初始化 TiffBitmapDecoder 類別的新執行個體。
TiffBitmapDecoder(Uri, BitmapCreateOptions, BitmapCacheOption)	使用指定的 createOptions 和 cacheOption，從指定的 TiffBitmapDecoder 初始化 Uri 類別的新執行個體。

TiffBitmapDecoder(Stream, BitmapCreateOptions, BitmapCacheOption)

使用指定的 createOptions 和 cacheOption，從指定的檔案資料流初始化 TiffBitmapDecoder 類別的新執行個體。

public:
 TiffBitmapDecoder(System::IO::Stream ^ bitmapStream, System::Windows::Media::Imaging::BitmapCreateOptions createOptions, System::Windows::Media::Imaging::BitmapCacheOption cacheOption);

[System.Security.SecurityCritical]
public TiffBitmapDecoder (System.IO.Stream bitmapStream, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption);

public TiffBitmapDecoder (System.IO.Stream bitmapStream, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption);

[<System.Security.SecurityCritical>]
new System.Windows.Media.Imaging.TiffBitmapDecoder : System.IO.Stream * System.Windows.Media.Imaging.BitmapCreateOptions * System.Windows.Media.Imaging.BitmapCacheOption -> System.Windows.Media.Imaging.TiffBitmapDecoder

new System.Windows.Media.Imaging.TiffBitmapDecoder : System.IO.Stream * System.Windows.Media.Imaging.BitmapCreateOptions * System.Windows.Media.Imaging.BitmapCacheOption -> System.Windows.Media.Imaging.TiffBitmapDecoder

Public Sub New (bitmapStream As Stream, createOptions As BitmapCreateOptions, cacheOption As BitmapCacheOption)

參數

bitmapStream

Stream

要解碼的點陣圖資料流。

createOptions

BitmapCreateOptions

點陣圖影像的初始化選項。

cacheOption

BitmapCacheOption

點陣圖影像的快取方法。

屬性

SecurityCriticalAttribute

例外狀況

ArgumentNullException

bitmapStream 值為 null。

FileFormatException

bitmapStream不是 (TIFF) 編碼影像的標記圖像檔案格式。

範例

下列範例示範如何從檔案資料流程建立 和使用 TiffBitmapDecoder 的實例。 解碼的 Image 影像會當做控制項的來源使用。

// Open a Stream and decode a TIFF image.
Stream^ imageStreamSource = gcnew FileStream("tulipfarm.tif", FileMode::Open, FileAccess::Read, FileShare::Read);
TiffBitmapDecoder^ decoder = gcnew TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions::PreservePixelFormat, BitmapCacheOption::Default);
BitmapSource^ bitmapSource = decoder->Frames[0];

// Draw the Image.
Image^ myImage = gcnew Image();
myImage->Source = bitmapSource;
myImage->Stretch = Stretch::None;
myImage->Margin = System::Windows::Thickness(20);

// Open a Stream and decode a TIFF image.
Stream imageStreamSource = new FileStream("tulipfarm.tif", FileMode.Open, FileAccess.Read, FileShare.Read);
var decoder = new TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
BitmapSource bitmapSource = decoder.Frames[0];

// Draw the Image.
var myImage = new Image();
myImage.Source = bitmapSource;
myImage.Stretch = Stretch.None;
myImage.Margin = new Thickness(20);

' Open a Stream and decode a TIFF image.
Dim imageStreamSource As New FileStream("tulipfarm.tif", FileMode.Open, FileAccess.Read, FileShare.Read)
Dim decoder As New TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default)
Dim bitmapSource As BitmapSource = decoder.Frames(0)

' Draw the Image.
Dim myImage As New Image()
myImage.Source = bitmapSource
myImage.Stretch = Stretch.None
myImage.Margin = New Thickness(20)

備註

如果您想要在解碼器建立之後關閉 bitmapStream ，請使用快 OnLoad 取選項。 預設快 OnDemand 取選項會保留資料流程的存取權，直到需要點陣圖，並由垃圾收集行程處理清除為止。

TiffBitmapDecoder(Uri, BitmapCreateOptions, BitmapCacheOption)

使用指定的 createOptions 和 cacheOption，從指定的 TiffBitmapDecoder 初始化 Uri 類別的新執行個體。

public:
 TiffBitmapDecoder(Uri ^ bitmapUri, System::Windows::Media::Imaging::BitmapCreateOptions createOptions, System::Windows::Media::Imaging::BitmapCacheOption cacheOption);

[System.Security.SecurityCritical]
public TiffBitmapDecoder (Uri bitmapUri, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption);

public TiffBitmapDecoder (Uri bitmapUri, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption);

[<System.Security.SecurityCritical>]
new System.Windows.Media.Imaging.TiffBitmapDecoder : Uri * System.Windows.Media.Imaging.BitmapCreateOptions * System.Windows.Media.Imaging.BitmapCacheOption -> System.Windows.Media.Imaging.TiffBitmapDecoder

new System.Windows.Media.Imaging.TiffBitmapDecoder : Uri * System.Windows.Media.Imaging.BitmapCreateOptions * System.Windows.Media.Imaging.BitmapCacheOption -> System.Windows.Media.Imaging.TiffBitmapDecoder

Public Sub New (bitmapUri As Uri, createOptions As BitmapCreateOptions, cacheOption As BitmapCacheOption)

參數

bitmapUri

Uri

Uri，識別要解碼的點陣圖。

createOptions

BitmapCreateOptions

點陣圖影像的初始化選項。

cacheOption

BitmapCacheOption

點陣圖影像的快取方法。

屬性

SecurityCriticalAttribute

例外狀況

ArgumentNullException

bitmapUri 值為 null。

FileFormatException

bitmapUri不是 (TIFF) 編碼影像的標記圖像檔案格式。

範例

下列範例示範如何建立 的實例，以及從 Uri 使用 TiffBitmapDecoder 。 解碼的 Image 影像會當做控制項的來源使用。

// Open a Uri and decode a TIFF image.
System::Uri^ myUri = gcnew System::Uri("tulipfarm.tif", UriKind::RelativeOrAbsolute);
TiffBitmapDecoder^ decoder2 = gcnew TiffBitmapDecoder(myUri, BitmapCreateOptions::PreservePixelFormat, BitmapCacheOption::Default);
BitmapSource^ bitmapSource2 = decoder2->Frames[0];

// Draw the Image.
Image^ myImage2 = gcnew Image();
myImage2->Source = bitmapSource2;
myImage2->Stretch = Stretch::None;
myImage2->Margin = System::Windows::Thickness(20);

// Open a Uri and decode a TIFF image.
var myUri = new Uri("tulipfarm.tif", UriKind.RelativeOrAbsolute);
var decoder2 = new TiffBitmapDecoder(myUri, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
BitmapSource bitmapSource2 = decoder2.Frames[0];

// Draw the Image.
var myImage2 = new Image();
myImage2.Source = bitmapSource2;
myImage2.Stretch = Stretch.None;
myImage2.Margin = new Thickness(20);

' Open a Uri and decode a TIFF image.
Dim myUri As New Uri("tulipfarm.tif", UriKind.RelativeOrAbsolute)
Dim decoder2 As New TiffBitmapDecoder(myUri, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default)
Dim bitmapSource2 As BitmapSource = decoder2.Frames(0)

' Draw the Image.
Dim myImage2 As New Image()
myImage2.Source = bitmapSource2
myImage2.Stretch = Stretch.None
myImage2.Margin = New Thickness(20)