Retrieving Data From SQL Server Db Using RecordSet Object In VB
May 13, 2011
I am kinda new to VB, but have used C# to pull data from a SQL Server db using DataTables and Reader, etc, however I am at a loss as to how to accomplish this in VB.I have a variable, which the user specifies, that I wish to use as a parameter in a SQL string, much like the following: "SELECT x FROM y WHERE x = '@param'" The result will then be stored in a string variable and I wiill do what I have to do with it.
I have Memberships and Bookings tables in database containing an attribute cust_id which is primary key in Memberships and reference key in Bookings. When i am executing data reader I want it to read cust_id values from membership table but it is reading it from the bookings table. Also when i compare two cust_id values, 1 taken from a textbox and the other taken from database column, even though both are same but the comparison result is false. I have compared using string.equals(str1, str2) and have also compared the two directly using if statement but in both cases even if the string is same but result is otherwise. [Code]
i am working on my academic project in which i need to retrieve data from sql server table to textbox and image in vb.net . i am able to retrive data either in text box or only image can anyone help me out to get data in textbox as wel as image in picturebox.
In this chunk of a code, the writer makes a reference to a recordset object and I just wanted to make sure I understood why before moving on. [code]...
In LoadDataBound, it says set rs = GetData(). This calls to the Function below, but why does it require to be set as an object of the rs recordset. Correct me here, because i'm most likely wrong, but does it require this so that you're able to make a function out of the recordset without having to use the same name for both (recordset and function) ? Or is there another process going on here that i'm unaware of.
I am trying to build a stand alone programe in VB.net (Most of my Experience is in VBA) I am using Visual Studio 2008 and have created as part of my project an SQL Server Compact database (Database1.sdf)
The problem I am having is that I can not seem to work out how to connect to this database and retrieve the data into a recordset to work on. I am sure it must be a simple task but I can not get it to work.
I have tried two ways, first is via ADODB connection
Dim strsql As String Dim rsRecord As New ADODB.Recordset Dim ConsDataADODB As New ADODB.Connection
I am trying to read JSON data from a server to a dataset object, any idea on how this can be done. I have tried using the DataContractJsonSerializer class but it only seems to work for objects.
JSON Data { "firstName": "John", "lastName": "Smith",
[code]....
The code above works to an object, but I want to parse the JSON data to a dataset object.
I have a combobox where the user can type the sql server name. Then a connect button that, when the user click, I want it to populate another combobox with all the databases from the server in the previous combobox. Unfortunately, I am getting the error object reference is not set....!
Here is where I am getting the error: For Each objDB As Database In Me.SMOServer.Databases I am new to VB ...I'm using vb2008 connecting to sql server 2005.
Here is my complete code: Imports Microsoft.SqlServer.Management.Smo Imports Microsoft.SqlServer.Management.Common Public Class Form1 'Public Class frmSQLConnection Private m_objServer As Server [Code] .....
Is it possible to spoof the referrer of a webbrowser object that is posting data to a server? I would change to WebRequests, but this needs to be done via a browser.
retriving the DNS server ip of my computer. But with my codes i only manage to the IP address of my computer.
Dim IPAddress As IPAddress = Dns.GetHostEntry(Dns.GetHostName).AddressList(1) Dim strIPAddress As String = IPAddress.ToString TextBox3.Text = strIPAddress
As you can see, i can retrieve the tag of the button (which is created at runtime) without any problems, i've made a temporary msgbox to show me the value of the tag, just for testing purposes. What i do have a problem with, is retrieving the tag of the individual web browsers, how should i do this?
Next issue, how would i code for my buttons to show the web browser with the same tag as the button that's just been clicked?
Currently, I have a listbox lstInventory where I have loaded some database information from a .mdb file. I am able to add new records, and they all display correctly.
Yet, I can't seem to retrieve or access any of the listbox items. (Not trying to reaccess database in here, yet). I am hoping to "Edit" an existing database record by matching it to the lstInventory's selecteditem property. Unfortunately, I am not able to retrieve anything (tried traditional CType(lstInventory.selecteditem.ToString, String) approach, as well as a debug.write approach (which I can't seem to display, even with a Listener-which is another issue in itself).
Furthermore, when I check the listbox.items.count property, it prints out as a "0" [using a messagebox.show()]
I have tried searching multiple forums, but found lots of "database into listbox" threads, and the MSDN website hasn't helped me yet. Do I need to know the collection's name (what would it's name be based on ?)? Or am I not converting the object into a printable/countable quantity?
I'm creating a VB.NET 2010 application which is connected to an Access 2010 database. I've set up a connection using the inbuilt connection wizard. I want to pull data from the tables using ADO.NET objects such as the data adapter to create datasets. The data adapter in ADO needs the connection object. Can I pull this from app.config? Should I junk the inbuilt connection and create a new one with code alone? Help.Scott M Brush
Public Function LookUpST(ByRef adcCON As ADODB.Connection, ByVal strSTT As String, Optional ByVal vntHasil As String = "", Optional ByVal vntRETURN As String = "", Optional ByVal vntNEXT As String = "", Optional ByVal vntNEXT_TO As String = "") As Boolean On Error GoTo ErrHndl Dim adrLook As New ADODB.Recordset [Code] .....
my code doesn't show anything when ever I start on my button "start recording" it starts to record every keystroke on the and show it in a textbox and after that i am trying to get that data into text of a sql 2005 database with vb vs2008 but when ever I click on the button to show me the saved data , retrieve from database, it doesn't show anything, why?
and I also want to create new row everytime the new object is created...thnx
Databse Class
[code]
Imports System.Data.SqlClient Public Class DataSaver Private sqlConnection1 As SqlConnection
I have a website that was written in VBSCRIPT that I am moving over to VB.NET. Until I have time to get to rewriting some pages/applications,I would like to update some of the code so they work a bit better.I am trying to grab a server variable on the VBSCRIPT page that contains our username from the enterprise login.I have 2 test pages here, one with language="VB" at the top and the other language="VBSCRIPT".
The VBSCRIPT page will list variables with no data when they have data on the VB page and in ALL_HTTP. Is there any way I can get VBSCRIPT to gather the correct info for all the server variables?
EDIT: These are the variables that vary between VB and VBS AUTH_USER, REMOTE_USER - logged in user on VBS, iis_anon on VB REMOTE_PORT - not listed in VBS
The following are listed in VBS, but have no data HTTP_SERVER_PROTOCOL HTTP_SM_TRANSACTIONID[code].....
Also there is a custom on I wish to get that is used for our enterprise authentication.
I have stored an excel file within an SQL Server Table having the corresponding column data type as varbinary (MAX) through a VB .NET windows application form. how can I retrieve and open the stored excel file for manipulation?
i have been in state of hectic for the last 2 days making lot of research and finally made this code worked it for me. My problem is that, how can i make this code retrieve the image from sql server database...use picturebox to load it in the vb.net program.
Dim myfilelocation As String = "C:myPicturesmyimage.png"
[code]....
Is it also possible to change the location of image where its getting the image. i mean, i would like to tell other computers to get their images from anywhere as long as it brings images to my server.i mean, say that comp1 which is connected to my database server for storing and retreiving information, gets his image from his location then the application sends the image to my server...the application retreives the image from the server..as simple as that.
I want to retrieve an object by using a string representation of the objects name. For example lets say i want to change the font of 3 labels on a form programatically. Instead of changing the font property for each individual label like so:
i wan to bind data from recordset into data grid view, but the data cannot show in the grid view, i try count the row, there are 2 rows of data, but cannot bind into grid view
If Not rs.EOF Then DataGridView1.DataSource = rs DataGridView1.Refresh()[code].....
This is my code in VB6 used for displaying data into listview using ADODB.recordset. converting this code into VB.net?. So I could load data into my listview easily.
Sub ListViewAdjustColumnWidth(LV As ListView, Optional AccountForHeaders As Boolean) Dim row As Long, col As Long
I am developing an application on VB2008 with MySql as database. I opened the connection without any errors. I have three fields/columns in my database and on the form. When I am running vb form data is not reflecting on to form fields.
I have written the following code in form load event. 'Dim cn As ADODB.Connection 'Dim rs As New ADODB.Recordset 'cn = New ADODB.Connection 'cn.ConnectionString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=in_out;" + "UID=root;" + "PASSWORD=pacvision;" + "OPTION=3;" 'cn.Open() 'MessageBox.Show("Connection Opened Successfully") 'rs.Open("Select * from deptno", cn.ConnectionString, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
I got a DataGrid Control that uses an Adodb.Recordset as a data source. I'd like to change the data type of the dodb.Recordset.Fields at run time. PS:I tried use the Type property but I got a message that it can't perform the operation when the object is open. Then I tried closing it with Close() but then it says the field is not available.
I'm using this code to retrieve the list of files from a FTP server Dim request As FtpWebRequest = WebRequest.Create("[URL]") request.Credentials = New NetworkCredential(username, password) request.Method = WebRequestMethods.Ftp.ListDirectoryDetails Dim response As FtpWebResponse = request.GetResponse() Dim responseStream As Stream = response.GetResponseStream() Dim reader As StreamReader = New StreamReader(responseStream) messagebox.show (reader.ReadLine)
It gives me alot of information that I dont need, I know that I can use: request.Method = WebRequestMethods.Ftp.ListDirectory Which only retrieves the file name but when I try to change it, it gives me an error. Error number 550. ListDirectory so I can only get the file name?
I'm currently battling to retrieve an image from SQL Server 2008 R2 in an asp webapplication using vb.net. The image is stored in the SQL Server 2008 R2 database as an image type. I've been researching for the past few days and can't seem to find anything solid on this topic. Apparently, the image has to be retrieved using
Is there a way to set session variables during login that are then available to reports? We have a reporting services server where we move and denormalize data from our transaction system for reporting purposes. In order to allow our users to login with the same user name and password from the transactional system we have set up custom forms authentication and after much trial and error it is finally working. In addition we have the authorization accessing our transactional system so that any changes in user authority is immediately reflected in Reporting Services.
Our problem now is that we would like to add some additional features such as locking down parameters depending on user authority/groups in our transactional system. We have found a way to do it but it's inefficient, basically we have stored procedures that will query our transactional system to check for access. The problem is that these queries will often be run for every report request even though the answer is unlikely to change. It would be nice to have access to session level data that can be set once during log in and then accessed from the reports.
I'm trying to obtain the Terminal Services Profile Path for a user using VB.Net and the System.DirectoryServices.DirectorySearcher. I am able to get the user object's first name, last name, city, state, zip, etc. However, there is one property that eludes me. I cannot manage to find a way to get the terminalservicesprofilepath property.This is how I did it in VB6 and it worked perfect:
visual basic code: Dim TSPath as string Dim FirstName as string
Finally starting some coding in VB.Net, I notice over the years, that we can say (in VB6)
Code: Dim MyForm_Stock as NEW frmStock
in the same session, being able to open, say 3 Stock Forms at the same time and maintain details independently of each of the other forms. Also am I able to maintain separate Database connections and the same table being opened and updated independently of each other by each separate form. What is actually taking place in terms of memory being used by each process? My ultimate goal is to be able to have ONE Module with all the possible data Connection and Recordset Opening and closing options, which I have failed miserably to do in my VB6 experience. Data access is an obvious module based set of subroutines. Others could be Date routines eg, Week Number of the year, Days Diff, Days to, etc. [Code]
