Retrieving Picture From Database?

Dec 15, 2011

i can save the picture in the database, now i have to retrieve it. this is my code for the saving of the picture,

Dim ms As New MemoryStream()
studentpic.Image.Save(ms, studentpic.Image.RawFormat)
Dim arrImage() As Byte = ms.GetBuffer
ms.Close()

[code].....

i saw on the net that i have to the reverse of the pic, i have to convert byte into image.

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Saving And Retrieving Picture From Sql Database?

May 24, 2011

i have this code in saving a picture.

vb.net
empno = txtEmpNo.Text
Dim myFile As System.IO.FileInfo = New System.IO.FileInfo(imagelink)
'' Create a new stream to load this photo into
Dim myStream As FileStream = New FileStream(imagelink.ToString, FileMode.Open, FileAccess.Read)
'' Create a buffer to hold the stream of bytes

[Code]...

but when retrieving, i got an error on this part "Dim FinalImage As Bitmap = New Bitmap(myStream)". The error message goes like "System.ArgumentException: Parameter is not valid. at System.Drawing.Bitmap..ctor(Stream stream). maybe someone would like to help me, on where is the origin of this error.

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Save Data In Microsoft Access Database And Retrieving It Back From Database?

Nov 19, 2010

can anyone teach me how to save data in microsoft access database and retrieving it back from database?[code]so, how do i save it in that and how do i load their data by typing their ic no only..

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Load Picture In Picture Box From Database?

Oct 25, 2010

how can I load picture in picture box from database using VB

in the database store pictuer name and its path ?

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Error When Retrieving Value From Database?

May 14, 2012

Dim NewOutwarsDeliveryNoteNumber As Integer
Dim iSql As String = "SELECT MAX(OutwardsRefNumber) FROM NewOutwards"
Dim da As OleDbDataAdapter = New OleDbDataAdapter(iSql, LoginForm1.Conn)

[code]....

when I try and run this code it gives me the error that says "Column 'OutwardsRefNumber' does not belong to table ."BUt I am 100% sure this column is in my table. what can I do to correct it?

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Retrieving A Bit Column From Sql Database?

Jul 26, 2011

I have encountered a problem where in my database I have a column that is a bit either 0 or 1 specifying if a user is an admin or is account suspended or not. And in my VB code I am trying to retrieve that bit. Example code:

Dim dtRequests As DataTable
dtRequests = New DataTable("Users")
dtRequests.Columns.Add("SESLoginID", System.Type.GetType("System.Int32"))

[Code]....

I tried getting rdr.GetByte(3), this tells me cast not valid, but there is no function of which will say GetBit, and if such exists I could not find it.

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Retrieving A PIN Code From A Database?

Mar 11, 2009

I am coding a banking and ATM application, which is split into two parts. In one part the employees of the bank can open new accounts for customers, edit accounts, etc. It includes assigning a unique PIN code for the customer. This is all saving to a database. The customer then uses the ATM part of the application to withdraw money. They use a unique PIN code to access their account. The problem that I'm having is retrieving the PIN from the database. I want to write a simple If statement, to match the PIN entered with the corresponding PIN in the database, so that it will retrieve all the relevant customer's details, eg. bank balance. The PIN is successfully saving to the database through the following....

Private Sub btnCommit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCommit.Click
If inc <> -1 Then

[Code]....

So how do I retrieve the PIN from the database that matches with the PIN entered and hence, retrieves bank balance, etc?

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Retrieving Data From Database?

Oct 17, 2010

I am using two textboxes, one for roll number and the other for the corresponding roll number.

And I am using 4 command Buttons

Move First
Move Previous
Move Next

[Code].....

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Retrieving Pdf Files From A Database?

Mar 1, 2011

im having trouble retrieving pdf files from a database and displaying them on a web form i am able to upload it from a dialog but cant retrieve from a access database. below is code that i have written to retrieve and display the pdf . it runs but doesnt display the pdf in the windows form nor does it give any errors .

Dim picture As Byte()
Dim count As Integer
Try

[Code]....

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Retrieving Values From Database Into .Net?

Nov 15, 2011

I'm trying to create a function that will check the database and compare it with the value of my label. (Basically a Version Checker) If it is the same, then nothing is displayed, if not, then I'll disable some buttons and change another text to display something. Here's the code I have so far...

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Panel2.Visible = False

[Code].....

I'm positive that I'm just not putting the correct calling reference in this part:

If Mydata(0).Read = Label2.Text Then

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Database Retrieving Without Binding To A Form

Feb 17, 2011

In a test project I was able to add a datasource to a form, bind it to the datagridview and manipulate it as needed. Now moving forward to the actual project, is it possible to add the datasource to a class and sort through the data for use in the class?[url]...

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Error While Retrieving Image From Database?

Nov 18, 2011

I am running into a problem while attempting to to retrieve data from a database. One of the items is an iage and it's throwing an error when I try to convert the byte array to a bitmap.Here is what I have. The exception "Parameter is not valid." is being thrown when on the line bmpImage = New Bitmap(stream)

Private Sub GetCatList()
Dim strSelect As String
strSelect = "Select CategoryID, CategoryName, Description, Picture"

[code]....

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Retrieving Data From Access Database?

Jun 11, 2011

i am working on a module in vb 10..i have to retrive data from the database between two dates...i have used the following code but not able to get ny output,,nt even an error

Imports System.Data.OleDb
Public Class Form4
Dim con As OleDbConnection

[Code].....

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Retrieving Data From Database Into Labels?

Nov 30, 2009

I am creating an ordering form. I have created an access database and linked it to VB2008. I am struggling to retrieve records from this database into labels. I am using a combo box to select records from the access db table, but I cant display them.Both my source and target tables have 6 columns and I want to display all columns after selecting record from the combo box.

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Retrieving Files From Database To Txtbox

Jun 5, 2010

how to connect sql server to forms, and also retrieving files from database to txtbox.

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Retrieving Image From Database To Picturebox?

Feb 23, 2012

Dim cmdstring As String = "SELECT A.ID, ProfileCategory, YearLevel, LastName,FirstName,MiddleName, Section,SchoolYear,StartTime,EndTime,Days,Laboratory, B.Image FROM ProfileInformation A JOIN Photo B ON (B.ID = A.ID) WHERE A.ID=" & lEmployeeID

[code].....

i'm trying to retrieve image from database to my picturebox. but ive got this error -onversion from type 'Byte()' to type 'Byte' is not valid.

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Retrieving Information From A MySQL Database

Mar 15, 2009

I'm new to VB.NET and having problem with retrieving information from a MySQL database, when populating the datagrid. [code]

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Retrieving Records From Access Database Using WCF?

May 18, 2009

I have a problem when trying to retrieve records from my Access database through WCF. In my application the user enters a Customer ID and the function then searches the database and retrieves all records related to that customer. However, it isn't working as it should. The code behind the search button is as follows:

Private Sub SearchButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SearchButton.Click

[Code]...

this code isn't doing as it should. The DataGridView should display the records relating to a customer but nothing is being returned at all, I'm not even getting any error messages. I've been looking at it so long I must be missing something ,

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Retrieving The Correct PIN Code From A Database?

Mar 18, 2009

I am having difficulty retrieving the correct PIN code from my database, for an ATM banking application. When someone enters a correct PIN code that is already in the database, they gain access to their ATM account. If incorrect, then a message box appears. I am having an unusual problem where, the system is partially working. The code I have, is preventing the user from accessing their account, in the correct manner, eg. message box pops up. However, it is also not accepting the correct PIN code. The most unusual thing about this, is that, if the user enters the number "1", the message box won't pop up, however it will still block the user from accessing their account. And even stranger again, after entering the number "1", trying it, then erasing it, if they enter the correct PIN after this, it will allow them to access their account.

Here is the code:

Public Class ATM2
Dim Pin As Integer
Public Sub Retrieve()

[Code].....

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Retrieving Value From Database And Selecting Combobox

Jan 8, 2012

I am working on a small concept but since i am a novice in .net i am not getting the concept.I have 2 controls on the page.1st is Text Box: User enters the int value and that value is checked from database. In database there are 3 fields. One for ID, second for int value and 3rd for country.If the text box value in database is associated with country US then it should show US in 2nd control ( can be text box or combo box) in UI. Else for anything else it should show London.

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Saving And Retrieving From A MS Access Database?

Jan 28, 2012

rs.Open("select * from CSOptions where OrderNumber = '" & cbstrCurrOrderNumber & "' and OrderLine = " & CBLI, strConn, 2, 2)
If rs.EOF Then
rs.AddNew()
End If

[code]....

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Searching And Retrieving Data From Database

Mar 24, 2012

my project name is book bank management system i need to give my author's name,book name and number of book's needed in my front end according to tht i want to know whether my book is available or not if available means return the number of books in the database
i am using sql server 2005 as back end and visual studio 2008 as front end

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Sql - Retrieving Record From MS-Access Database?

Mar 26, 2012

I'm trying to retrieve record data from an MS-Access database and store it into a variable. i'm using this SQL command to query the database: Dim cmdRead As OleDbCommand = New OleDbCommand("SELECT UserID FROM [User] where Username=?", conn) How do I do it in VB.NET to read data from the UserID column (in the db) and store it into a variable in VB.NET?

What I basically want to do is to retrieve the UserID so that I can then retrieve the Name and Surname of the user from the same table.

Note: I'm using ASP.NET with Web Develop 2003 and an MS-Access 2003 db.

[Code]...

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Storing And Retrieving Images In Database?

Oct 5, 2011

Here is the code I used to store an image in my database (SQL Server 2008 R2) using VB 2010. The images get stored but the problem is the clarity of the image is lost when retrieved and seen in a picture box.

Public Function InsertUpdateImage(ByRef _SqlConnection As System.Data.SqlClient.SqlConnection, ByVal _Image As System.Drawing.Image, ByVal _ImageFormat As System.Drawing.Imaging.ImageFormat) As Integer

[Code]....

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VS 2005 Retrieving Values From Database?

Jun 23, 2011

Im taking over a project that pulls information from a database.Currently I have everything I need except the username.The person who setup the project did it as a web project so he used the MemberShip class to create unique user keys based on the person's username.

The username is not stored anywhere in the database only these userID keys.

The client wants a desktop app that mimics the website behavior of writing to the database.

Problem:I ask the user to enter in a username at the login. The username connects to the database on the server.I have no way of grabbing any user info after this point as the primary key(USERID) is a unique key and not a username. Is there a way to convert a MemberShip ProviderUserkey into a string Username or am I screwed?

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.net 2010 And Access Database Not Retrieving Data?

May 19, 2010

I am trying to build a front end for an access database I created I can connect to the database but when I try to pull data into a data grid view I get no results Here is the code what did I do wrong(I'm also new to vb)

search
Private Sub searchbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles searchbtn.Click
Dim srval As String
Dim type As String

[code]....

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Database - Retrieving Data From ListView Control

Apr 12, 2010

I have a ListView setup in details mode that looks like this: When the user presses the delete button, I need to go ahead and delete their record from the database. This I can do fine, but I'm stuck on how I retrieve the data that is highlighted in the ListView control. I've tried using Google but all the examples I found have failed to work.

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Database :: Retrieving Data From ListView Control?

Apr 15, 2010

I have a ListView control set up in details mode with 5 columns. It is populated by code using the following subroutine:

For j = 0 To 14
cmd = New OleDbCommand("SELECT TeacherName, ClassSubject, BookingDate, BookingPeriod FROM " & SchemaTable.Rows(i)!TABLE_NAME.ToString() & " WHERE (((BookingDate)=" & Chr(34) &

[code]....

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Retrieving Image From Sql Server Database In A Picturebox?

Sep 20, 2010

i have created a table named students with photo as varbinary(max)

i have designed a form with two buttons(insert and retrieve) and a picture box on it

Under insert button:

Try
Dim st As
New FileStream(OpenFileDialog1.FileName, FileMode.Open, FileAccess.Read)

[Code]....

inserting image is no problem but when i retrive image in picturebox it gives i message as "invalid object name students"

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Retrieving Rows From A MS Access Database View

Jul 11, 2011

I've managed to get the following code...

[Code]...

To retrieve a list of Views in my Access database, but now I want to retrieve the results based on a selected View. Is there a correct method in doing this, or do I take the SQL Statement from the DataTable returned for each row?

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