Comments on: Storing images in SQL Server 2005 and retrieving them from VB.NET

By: bfullen

bfullen — Tue, 15 May 2012 15:43:59 +0000

He said VB.NET. I am so tired of people asking for VB.NET solutions and people posting a C# solution. There is a reason we are asking for a VB.NET solution!!!

By: palanivelkavi

palanivelkavi — Fri, 11 Feb 2011 12:54:28 +0000

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)

Image1.ImageUrl = “~/ShowImage.ashx?id=” & ID

End Sub
End Class

By: palanivelkavi

palanivelkavi — Fri, 11 Feb 2011 12:52:52 +0000

———-CODE FRO——–.ASHX———————–
Imports System
Imports System.Configuration
Imports System.Web
Imports System.IO
Imports System.Data
Imports System.Data.SqlClient

Public Class ShowImage
Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim empno As Int32
If Not context.Request.QueryString(“id”) Is Nothing Then
empno = Convert.ToInt32(context.Request.QueryString(“id”))
Else
Throw New ArgumentException(“No parameter specified”)
End If

context.Response.ContentType = “image/jpeg”
Dim strm As Stream = ShowEmpImage(empno)
Dim buffer As Byte() = New Byte(4095) {}
Dim byteSeq As Integer = strm.Read(buffer, 0, 4096)

Do While byteSeq > 0
context.Response.OutputStream.Write(buffer, 0, byteSeq)
byteSeq = strm.Read(buffer, 0, 4096)
Loop
‘context.Response.BinaryWrite(buffer);
End Sub

Public Function ShowEmpImage(ByVal empno As Integer) As Stream
Dim conn As String = ConfigurationManager.ConnectionStrings(“EmployeeConnString”).ConnectionString
Dim connection As SqlConnection = New SqlConnection(conn)
Dim sql As String = “SELECT empimg FROM image WHERE empid = @ID”
Dim cmd As SqlCommand = New SqlCommand(sql, connection)
cmd.CommandType = CommandType.Text
cmd.Parameters.AddWithValue(“@ID”, empno)
connection.Open()
Dim img As Object = cmd.ExecuteScalar()
Try
Return New MemoryStream(CType(img, Byte()))
Catch
Return Nothing
Finally
connection.Close()
End Try
End Function

Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
Get
Return False
End Get
End Property

End Class

By: palanivelkavi

palanivelkavi — Fri, 11 Feb 2011 12:47:37 +0000

i have following type of table

r1:id,r2:name,r3:image following up 5 person detais in SQL

I need asp Coding for when i entered name want to show that person Image.

By: chejane

chejane — Fri, 30 Apr 2010 03:05:13 +0000

hi! can somebody help me about my problem?
I want to retrieve the picture from sql server database and display it on a website using VB.net. coz’ my boss want to display the student pictures, infos. and grades of the students. now he want me to retrieve the pictures of the students from sql database and display it on our website. pls help me do this project. i have a table in my database
student id (nchar8)
student name (nchar30)
Student Photo (varbinary(max))

help me to encode the VB to business intelligence development studio pls?