vbnet储存图片文件 vb载入图片
vb.net怎样保存图片文件,并且保存的图片名称为当前时间
将PictureBox控件里的图片,保存为文件:
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1,文件格式不变化:
PictureBox1.Image.Save("C:\" Format(Now, "HH-mm-ss") ".bmp")
2,文件格式有变化:
PictureBox1.Image.Save("C:\" Format(Now, "HH-mm-ss") ".bmp", System.Drawing.Imaging.ImageFormat.Bmp)
vb.net 中如何将图片保存到SQL数据库
#Region "二进制文件的存储函数" Public Function BinaryToFile(ByRef TableRowColItem As Object, ByVal FileName As String) As Boolean Dim data As Byte() = TableRowColItem
Dim myfilestream As New System.IO.FileStream(FileName, IO.FileMode.Create)
myfilestream.Write(data, 0, data.Length)
myfilestream.Close()
Return True
End Function Public Function BinaryToImage(ByRef TableRowColItem As Object, ByRef image As Image) As Boolean Dim data As Byte() = TableRowColItem Dim imgStream As New System.IO.MemoryStream '(data)
imgStream.Write(data, 0, data.Length)
image = System.Drawing.Image.FromStream(imgStream)
imgStream.Close()
imgStream.Dispose() Return True
End Function
Public Function BinaryFromFile(ByVal FileName As String, ByRef TableRowColItem As Object) As Boolean Using myfilestream As New FileStream(FileName, FileMode.Open, FileAccess.Read)
Dim data() As Byte
ReDim data(myfilestream.Length - 1)
myfilestream.Read(data, 0, myfilestream.Length)
myfilestream.Close()
TableRowColItem = data End Using
Return True
End Function Public Function BinaryFromImage(ByRef Image As Image, ByRef TableRowColItem As Object) As Boolean
Dim imgStream As New MemoryStream
Dim b As New Bitmap(Image) b.Save(imgStream, System.Drawing.Imaging.ImageFormat.Jpeg) Dim data As Byte() = imgStream.GetBuffer
TableRowColItem = data
data = TableRowColItem
imgStream.Close()
imgStream.Dispose() Return True
End Function Public Function BinaryFromImage(ByVal Image As Image, ByRef TableRowColItem As Object, ByVal imgFormat As System.Drawing.Imaging.ImageFormat) As Boolean
Dim imgStream As New MemoryStream
'Image.Save(imgStream, imgFormat)
'Dim b As New Bitmap(Image)
'b.Save("c:\a.bmp", imgFormat)
'b.Save("c:\a.bmp", imgFormat) Dim data As Byte() = imgStream.GetBuffer TableRowColItem = data
data = TableRowColItem
imgStream.Close()
Return True
End Function
#End Region
vb.net怎样保存图片,保存路径为textbox1.text
如果TextBox1.Text包括了路径文件名;
PictureBox1.Image.Save(TextBox1.Text)
请问VB.net中如何保存BMP/jpg图像
我理解你
我写过图片网络传输的和你要求的一样
为了不把图片写到硬盘 又从硬盘读取
而直接保存图片内存流 进行网络传输
从网络读取的图片byte数组转成图片代码如下
Dim mStream As New IO.MemoryStream
mStream.Write(b, 0, b.length) '这里b就是你的一维数组了
Dim Img As New Bitmap(mStream)
mStream.Close()
mStream.Dispose()
下面是把图片保存到一维数组的方法
Dim Stream As New IO.MemoryStream
im.Save(Stream, System.Drawing.Imaging.ImageFormat.Jpeg)
im = Nothing
Stream.Flush()
Dim b As Byte() = Stream.ToArray
Stream.Dispose()
vb.net保存.jpg文件 文件名为当前时间,怎么实现,各位谢谢了。。。。
now()可以返回当前时间,如果你要把它作文件名,那么需要先转换成string,可以使用
format函数
,比如format(now(),
文章标题:vbnet储存图片文件 vb载入图片
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