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如何使用Aspose.BarCode從多頁面TIFF圖像中讀取條形碼

原創(chuàng)|其它|編輯：郝浩|2012-10-18 15:57:56.000|閱讀 449 次

概述：從多頁Tiff文件中讀取條形碼，是我們經(jīng)常會遇到的一個實際問題。下面就是使用Aspose.BarCode解決這一問題的示例代碼：

從多頁Tiff文件中讀取條形碼，是我們經(jīng)常會遇到的一個實際問題。下面就是使用Aspose.BarCode解決這一問題的示例代碼：

[C#]

//Calculate the pages count
System.Drawing.Image img = Image.FromFile(@".\multi-page.tif");
Guid guid = img.FrameDimensionsList[0];
FrameDimension dimension = new FrameDimension(guid);
int totalFrame = img.GetFrameCount(dimension);

//Feed the pages to BarCodeReader one by one
BarCodeReader rd = new BarCodeReader(new Bitmap(img));
for (int i = 0; i < totalFrame; i++)
{
    // Set the active page and feed it to the BarCodeReader
    img.SelectActiveFrame(dimension, i);
    Console.Out.WriteLine("Page[" + i + "]");
    while(rd.Read())
    {
        Console.Out.WriteLine("BarCode Found. CodeText: " + rd.GetCodeText());
    }
}
rd.Close();

[VB.NET]

'Calculate the pages count
Dim img As System.Drawing.Image = Image.FromFile(".\multi-page.tif")
Dim guid As Guid = img.FrameDimensionsList(0)
Dim dimension As FrameDimension = New FrameDimension(guid)
Dim totalFrame As Integer = img.GetFrameCount(dimension)

'Feed the pages to BarCodeReader one by one
Dim rd As BarCodeReader = New BarCodeReader(New Bitmap(img))
Dim i As Integer = 0
Do While i < totalFrame
    ' Set the active page and feed it to the BarCodeReader
    img.SelectActiveFrame(dimension, i)
    Console.Out.WriteLine("Page[" & i & "]")
    Do While rd.Read()
        Console.Out.WriteLine("BarCode Found. CodeText: " & rd.GetCodeText())
    Loop
    i += 1
Loop
rd.Close()

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