Click here to Skip to main content
       

Visual Basic

 
GeneralRe: Help with Error Message PinmemberGeorgieMPorgie5-Nov-12 5:03 
GeneralRe: Help with Error Message PinmentorWayne Gaylard5-Nov-12 18:31 
QuestionUse Reportvier to Show Table with Unknown Number of Columns PinmemberMember 76634803-Nov-12 15:03 
AnswerRe: Use Reportvier to Show Table with Unknown Number of Columns PinmvpDave Kreskowiak4-Nov-12 4:25 
AnswerRe: Use Reportvier to Show Table with Unknown Number of Columns PinmemberMycroft Holmes4-Nov-12 11:54 
QuestionHow can i retrieve image to pictureBox ? Pinmemberheinhtataung1-Nov-12 18:04 
AnswerRe: How can i retrieve image to pictureBox ? PinmemberEddy Vluggen2-Nov-12 0:57 
AnswerRe: How can i retrieve image to pictureBox ? PinmemberSZLMCL6-Nov-12 23:20 
hy
 
This function converts byte array to image:
 
Public Shared Function ByteArrayToImage(ByVal ByteArr() As Byte) As Object
                Dim ImageStream As System.IO.MemoryStream
 
                Try
                    If ByteArr.GetUpperBound(0) > 0 Then
                        ImageStream = New System.IO.MemoryStream(ByteArr)
                        Return Image.FromStream(ImageStream)
                    Else
                        Return Nothing
                    End If
                Catch ex As Exception
                    Return Nothing
                End Try
            End Function
 
and this convert back:
 
 Public Shared Function ImageToByteArray(ByVal NewImage As Image) As Object
                Dim ImageStream As System.IO.MemoryStream
                Dim ByteArr() As Byte
 
                Try
                    ReDim ByteArr(0)
                    If NewImage IsNot Nothing Then
                        ImageStream = New System.IO.MemoryStream
                        NewImage.Save(ImageStream, Imaging.ImageFormat.Jpeg)
                        ReDim ByteArr(CInt(ImageStream.Length - 1))
                        ImageStream.Position = 0
                        ImageStream.Read(ByteArr, 0, CInt(ImageStream.Length))
                    End If
                    Return ByteArr
                Catch ex As Exception
                    Return Nothing
                End Try
            End Function
 
+You need DBNull check when the column allow nulls.
QuestionHow can i save image in my N-tier application? Pinmemberheinhtataung31-Oct-12 20:20 
AnswerRe: How can i save image in my N-tier application? PinmemberEddy Vluggen1-Nov-12 3:05 
QuestionAI program PinmemberCasey Edison31-Oct-12 5:04 
AnswerRe: AI program PinmemberSimon_Whale31-Oct-12 5:08 
GeneralRe: AI program PinmemberCasey Edison31-Oct-12 5:13 
AnswerRe: AI program PinmvpRichard MacCutchan31-Oct-12 7:59 
GeneralRe: AI program PinmemberCasey Edison31-Oct-12 12:26 
GeneralRe: AI program PinmvpRichard MacCutchan31-Oct-12 23:18 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 0:42 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 2:06 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 8:14 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 8:19 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 12:40 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 14:55 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 8:15 
GeneralRe: AI program PinmemberEddy Vluggen2-Nov-12 1:08 
QuestionHow to INSERT multiple rows of data to sql table? Pinmemberzaimah31-Oct-12 1:28 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.


Advertise | Privacy | Mobile
Web01 | 2.8.140721.1 | Last Updated 28 Jul 2014
Copyright © CodeProject, 1999-2014
All Rights Reserved. Terms of Service
Layout: fixed | fluid