如何在VB.NET中将bitmapimage保存到文件夹中 [英] How can I save bitmapimage to a folder in VB.NET

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问题描述

请帮我把bitmapimage对象保存到文件夹中...



我尝试过:



  Dim  myImage  as   new  System.windows.controls.image 

myImage .Source = ObjBitmapImage

Dim bf As BitmapFrame = myImage.Source

使用 fs as FileStream(filePath,FileMode.Create)
Dim enc As JpegBitmapEncoder
enc.Frames。添加(bf)
enc.Save(fs)
结束 使用





但我收到了对象投射错误..

解决方案

以下是我上个月回答的类似问题的解决方案:

 私有  Sub  SaveJpgImage(source  As  BitmapImage,photoLocation 正如 字符串

SaveImage(source,photoLocation, JpegBitmapEncoder())

结束 Sub

私有 Sub SavePngImage(source As BitmapImage, photoLocation 作为 字符串

SaveImage(source,photoLocation, PngBitmapEncoder())

结束 Sub

私有 Sub SaveImage(source 作为 BitmapImage,photoLocation 作为 字符串,编码器 As BitmapEncoder)

encoder.Frames.Add(BitmapFrame.Create(source))

使用 filestream = FileStream(photoLocation,FileMode.Create)
encoder.Save(filestream)
结束 使用

结束 Sub



使用:

 SaveJpgImage(myImage, 。\ cropped.jpg



其中 myImage 的类型为 BitmapImage

Please help me to save a bitmapimage object to a folder...

What I have tried:

Dim myImage as new System.windows.controls.image

myImage .Source=ObjBitmapImage

Dim bf As BitmapFrame = myImage.Source

Using fs as New FileStream(filePath, FileMode.Create)
       Dim enc As New JpegBitmapEncoder
       enc.Frames.Add(bf)
       enc.Save(fs)
End Using



But i am getting object cast error..

解决方案

Here is a solution from a similar question that I answered last month:

Private Sub SaveJpgImage(source As BitmapImage, photoLocation As String)

    SaveImage(source, photoLocation, New JpegBitmapEncoder())

End Sub

Private Sub SavePngImage(source As BitmapImage, photoLocation As String)

    SaveImage(source, photoLocation, New PngBitmapEncoder())

End Sub

Private Sub SaveImage(source As BitmapImage, photoLocation As String, encoder As BitmapEncoder)

    encoder.Frames.Add(BitmapFrame.Create(source))

    Using filestream = New FileStream(photoLocation, FileMode.Create)
        encoder.Save(filestream)
    End Using

End Sub


And to use:

SaveJpgImage(myImage, ".\cropped.jpg")


Where myImage is of type BitmapImage.


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