我使用canvg将SVG转换为画布到图像，然后在vb.net客户端我将图像转换为bytearray（）并将其保存到我的服务器上的文件夹中，以便我可以通过电子邮件附加：
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
Dim path = Server.MapPath("PDFs\")
Dim fileNameWithPath As String = path + DateTime.Now.ToString().Replace("/", "-").Replace(" ", "-").Replace(":", "") + ".jpeg"
Dim fs As FileStream = New FileStream(fileNameWithPath, FileMode.Create)
Dim bw As BinaryWriter = New BinaryWriter(fs)
Dim ByteArray() As Byte = Convert.FromBase64String(hfChartImg.Value)
bw.Write(ByteArray)
bw.Close()
Dim file As String = fileNameWithPath
Dim message As New MailMessage()
message.From = New MailAddress("****************")
message.To.Add(New MailAddress("***************"))
message.Subject = "new image "
message.Body = "this is the apak chart img"
Dim data As New Attachment(file)
message.Attachments.Add(data)
Dim client As New SmtpClient()
client.Host = "smtp.gmail.com"
client.Credentials = New NetworkCredential("***************", "*******")
client.EnableSsl = True
client.Port = 587
client.Send(message)
End Sub
此代码工作正常，它发送图像。
实际上我不需要将此图像保存到我的服务器我只是想发送而不保存，这就是我到目前为止所做的
Protected Sub emailSend_Click(ByVal sender As Object, ByVal e As EventArgs) Handles emailSend.Click
Dim customerChoice As String = DropDownList1.Text
Select Case customerChoice
Case "pdf"
MsgBox("select pdf ")
Case "image"
Dim imageFile As MemoryStream = New MemoryStream()
Dim bw As BinaryWriter = New BinaryWriter(imageFile)
Dim bytearray() As Byte = Convert.FromBase64String(hfChartImg.Value)
bw.Write(bytearray)
我离做我想做的事还很远吗？？？