Hi Daniel and Fergus,
The problem with the given solution was, that the picture shows up as a page, without a button to post back or everything,
You see them often on Internet, the only thing you can do is push on the navigate or close button.
Response.BinaryWrite(CType(mySQLDataReader.Item(" FileData"), Byte())
Problem with the binary picture formate is, that there is no webcontrol that will accept an byte())
The solution I is calling a page, that the page himself could get as a picture page via the "session" is the index in the SQL server transported.
With aspx script it is easy, and when you have done it with VB.net language too.
Here it is, I left the cotrols in. I did include the aspx files to at the end.
I have deleted the button for the postback after the picture was shown.
Cor
Option Strict On
Imports System.Data.SqlClient
Public Class WebForm1
Inherits System.Web.UI.Page
Protected da As SqlDataAdapter
Protected cbd As SqlCommandBuilder
Protected dsPictures As DataSet
Protected connStr As String = "Server=localhost; DataBase=Northwind; Integrated Security=SSPI"
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Protected WithEvents Image1 As System.Web.UI.WebControls.Image
Protected WithEvents Label1 As System.Web.UI.WebControls.Label
Protected WithEvents ListBox1 As System.Web.UI.WebControls.ListBox
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
Dim conn As New SqlConnection(connStr)
Dim cmd As New SqlCommand("SELECT FileName, PictureID FROM Picture", conn)
da = New SqlDataAdapter(cmd)
cbd = New SqlCommandBuilder(da)
dsPictures = New DataSet
da.Fill(dsPictures)
Me.Image1.Visible = False
ListBox1.AutoPostBack = True
Try
ListBox1.DataSource = dsPictures.Tables(0)
ListBox1.DataTextField = "FileName"
ListBox1.DataValueField = "PictureID"
ListBox1.DataBind()
Catch sqlExc As SqlException
Me.Label1.Text = "Database Error" 'sqlExc.ToString
Catch exc As Exception
Me.Label1.Text = "Datbase Connection Failed!"
End Try
conn.Close()
End If
End Sub
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
Session.Item("img") = ListBox1.SelectedItem.Value
Image1.Visible = True
Image1.ImageUrl = "http://localhost/testSQLWeb/WebForm2.aspx"
End Sub
End Class
-------------------------
Option Strict On
Imports System.Data.SqlClient
Public Class WebForm2
Inherits System.Web.UI.Page
Protected connStr As String = "Server=localhost; DataBase=Northwind; Integrated Security=SSPI"
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim conn As New SqlConnection(connStr)
Dim sqlstr As String = String.Format("SELECT Picture FROM Picture WHERE (PictureID = {0})", CInt(Session.Item("img")))
Dim cmd As New SqlCommand(sqlstr, conn)
conn.Open()
Dim rdr As SqlDataReader = cmd.ExecuteReader()
rdr.Read()
Response.BinaryWrite(CType(rdr.Item("Picture"), Byte()))
rdr.Close()
conn.Close()
End Sub
End Class
---------------------------
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="testSQLWeb.WebForm1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>WebForm1</title>
<meta content="Microsoft Visual Studio .NET 7.1" name=GENERATOR>
<meta content="Visual Basic .NET 7.1" name=CODE_LANGUAGE>
<meta content=JavaScript name=vs_defaultClientScript>
<meta content=http://schemas.microsoft.com/intellisense/ie5 name=vs_targetSchema>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id=Form1 method=post runat="server"><asp:listbox id=ListBox1 style="Z-INDEX: 103; LEFT: 312px; POSITION: absolute; TOP: 11px" runat="server" Height="122px" Width="285px"></asp:listbox><asp:label id=Label1 style="Z-INDEX: 102; LEFT: 326px; POSITION: absolute; TOP: 352px" runat="server" Height="35px" Width="272px"></asp:label><asp:image id=Image1 style="Z-INDEX: 104; LEFT: 329px; POSITION: absolute; TOP: 143px" runat="server" Height="166px" Width="265px"></asp:image></form>
</body>
</HTML>
-----------------------------------------------------------------------------------------------------------
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm2.aspx.vb" Inherits="testSQLWeb.WebForm2"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>WebForm2</title>
<meta content="Microsoft Visual Studio .NET 7.1" name=GENERATOR>
<meta content="Visual Basic .NET 7.1" name=CODE_LANGUAGE>
<meta content=JavaScript name=vs_defaultClientScript>
<meta content=http://schemas.microsoft.com/intellisense/ie5 name=vs_targetSchema>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id=Form1 method=post
runat="server"></form>
</body>
</HTML>
..
..
