VS 2005 - Searching For Particular Entry In MDB Table
Nov 10, 2009
I made some progress and I am succesfully reading in reading in two columns of data to my DataGridView but now I am stuck. I have to search the first column for a particular number the read in that row and put the data in a variable to use, how do I search through this data?
Here is what I have so far:
vb
Private Sub RetrieveContacts()
Dim conn As New OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;Data Source=" & Application.StartupPath & "myTest.mdb")
Dim adapter As New OleDbDataAdapter("SELECT [PN], [SIZE] FROM MYTABLE", conn)
Dim dt As New DataTable("MYTABLE")
adapter.Fill(dt)
dgContacts.DataSource = dt
End Sub
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Nov 3, 2009
I am having to create a data adapter to pull data into a dataset, then loop through that dataset in order to add information into a new column from a separate data source. My first data source is access. My second data source is oracle. Here is the code I have to do this, which works well when I show it in a grid.
Dim da As New OleDbDataAdapter("SELECT tblSummary.WorkOrderNumber, tblLabor.Crew, tblLabor.NumberOfMechanics, tblLabor.NumberOfHoursPerMechanic, tblTasks.TaskNumber, tblTasks.TaskDescription FROM (tblLabor tblLabor INNER JOIN tblTasks tblTasks ON tblLabor.TaskID=tblTasks.TaskID) INNER JOIN tblSummary tblSummary ON tblTasks.JobPlanNumber=tblSummary.JobPlanNumber WHERE
[code]....
how I can search through this data table. For instance, I want to see only rows that are in this data table that have "Replace" somewhere in the "Description" field, which is the field I added from my second data source. How do I do this? Is there an easier way to do all this instead of filling my dataset from the first source and then adding columns from the second source by looping?
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Apr 1, 2011
I have a database containing usernames and "points". I need to increment the "points" at will. I have the table connected to a sqldatasource.
Here is my current code:
With Users
.UpdateCommand = "UPDATE Users SET points = points + 1"
.Update()
End With
This works great, except, instead of just changing the entry with the username specified by a QueryString, it changes all of the entries and adds one.The sqldatasource has the following select command:
SelectCommand="SELECT * FROM [Users] WHERE ([username] = @username)"
This command makes it so that only entries with the querystring specified username are displayed. This is really my first attempt at SQL.
[code]....
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Apr 20, 2011
I have a sub that updates a form on certain occasions. Sometimes I need to update a form when some of the entries in my table will still have a NULL value. I used this code to prevent the sub from trying to fill the form fields with NULL data:
[Code]...
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Apr 15, 2011
What is the best way to compare an Int entry from a table in a case statement?Using SQL server 2008 R2, Visual Basic Express with LINQ to SQL.The code I tried doesnt work:
Private Sub UpdateSetOpt()
Dim db = New ACEDataContext
Dim SRM = From q In db.Settings
[code]....
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Feb 13, 2011
I use in java JTable looks like a excell sheet create columns and rows and enter data in it.In vb 2008 what control i can use, I think table control layout not supported to data entry it supports control to in it and then add data .
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Aug 24, 2009
I am pulling the computer model from the bios, the passing the result into some SQL to find it in a table (as the bios name, and the names in the database are different).If it exist, it writes the value from the database to a combo box (cbModelBios)I am trying to debug the case where the computer model does not exist in the table.I figured I would just try to see if the SQL statement returned null, but I am still getting an error [code]
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Jun 5, 2010
I am looking to programme a button to check if an entry from a textbox exists within a table.
This will done via a button.
how I would code the button to make it query the table?
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Jun 21, 2010
how can i control Data Entry in 3 different table with BeginTranaction / Commit /Rollback in vb.net 2008. i am using sql server 2000 at back end and used SqlClient,SqlConnection, ExecNonQuery method.
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Nov 23, 2011
Iam trying to link a database to a website. I want the website to allow a user to make a username (OrgID) and password (OrgPassword) and have them apear in my database table (Organizer). This is the code I have so far, but I cannot get it to update the information in the database.
protected void RegisterUser_CreatedUser(object sender, EventArgs e)
{
if (txtUserName.Text != "" && OrgPassword.Text !="")
[code]....
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Mar 7, 2009
I hope someone can help me. I have an ATM machine connected to a server. A form takes a textBox entry as a PIN number and matches it to a card number in the same table which is the primary key. The card number is in a comboBox.Selected Item. I have used a dataset to fill the comboBox as the form loads. I have tried for days and got nowhere.
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Nov 12, 2009
I have an application where I need to be able to search for the workers related to a company from a contacts list. I am able to do this by entering the company number but I am unsure how I can set the query to allow to search for the information in the other table.
[Code]...
SELECT RecordNo, CompanyID, AccntRep, CustNumber, Person, SubjectID, StatusID FROM dbo.Contact
WHERE CompanyID = @companyNo I think that I need to create a join in the SQL statement to the company table but am unsure how to go about this and I would be grateful if someone would give me a point in the right direction so that i can search for the company name instead of the companyID.
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Feb 2, 2011
I need to display all the data in that table but it only shows me the last entry.
db.OpenConnection()
strSQL = "SELECT * FROM BaselineTeam WHERE Process = '" & txtProcess.Text & "' " & _
"AND SubProcess = '" & txtSubProcess.Text & "'"[code]......
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Mar 21, 2012
I am creating data entry form in vb.net. I have three tables 1.orders,2. orderdetails 3.productOrderid- Primary key for Order table and foreign key for Orderdetail table.In Dataentry form , I need when I load form , value of orderid from ordertable should automatically load in orderid colum of ordertable.
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Jun 4, 2009
I am currently updating an application I wrote to view Car Insurance Policies, using a backed SQL database and a front end vb.net GUI. I now need to make a change.
I haev added a new table which has all Active Policies, and i have the old table with every policy there has been active or not. We do an import from a separate company, and there is no Active/Not Active field.
I need a query/code that will populate an "Active/NotActive" field in the old table. For example:
CODE:
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Apr 9, 2012
I'm trying to create an option to select a specific entry in a SQL table if multiples exists. The Sub listed below is for a textbox (MOTxt) and a button (GotMO) for checking an MO# to pull from SQL. Based on the number entered, will populate other text boxes on the page with that row's data. There are exceptions to this, where the MONumber will be entered more than once with different data associated with each entry. So, here's my situation. If we have a duplicate MONumber listed in the table, it will populate the textboxes with the first entry it finds for an update.I would like to create a dynamic dropdownlist (that displays only if multiples are found) displaying the 'Name' field entries for each MONumber found, then once the correct name is selected from that list, to then populate the textboxes with that selected datarow.Here's my code behind:
Protected Sub GotMONum_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles GotMO.Click
Dim da As New SqlDataAdapter
[code].....
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Jan 9, 2011
Im pretty use to doing loops (although still relative new to vb) in my code however am having difficulty setting up one that picks up an entry in one data table and then sums a field in another where records have matching criteria. Example:
[Code]...
What i am trying to do is set up a datagridview on a form that shows the summary data. The time is controlled on the form by a trackbar (output to textbox) and I started setting up a loop using (For/Next) to isolate firstly the matching entries in field 3 (time). This works fine. I then used compute to sum the the field 2. However what i want to do is to loop through table 2 and where entries match i.e. where Field 1 in table 2="A" sum matching entries in table 1 where the DateTime matches.
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Jul 8, 2010
I have a form that reads the data from the database table ( so you can see I have figured out how to attach to a databse table)On the form I can scroll through the data with use of the binding navigator that VB automaticly installed on the form, but I need to search the table for specific data in one field.I am guessing that one way is to use a query, but I can't figure out how to use one.I realize that this may be real simple, but because I am just learning VB, I don't know where to start.
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Jan 13, 2011
I'm trying to write code that allows a search for a particular record in a data table. The table, imported from an access database has 4 columns, the first being names of cities. I need to search for a particular city and have it display the city name and the other three columns of data for that row in particular text boxes. Here is my code...it is the last sub routine that is the problem...I'm tying myself in noob-ish knots trying to figure out nested loops etc to search... (I've commented some of it out whilst I tried to figure it out but I'm running out of time and patience and my knowledge of VB is limited!!)
[Code]...
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Jun 21, 2010
I was able to successfully connect my database using connection string, i am having a hard time finding tutorials on how to add the items in a textbox. [code]...
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Jul 14, 2009
I write the following
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[Code]...
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Jan 9, 2011
I got a problem I need to search by First Name OR Surname. So the user can enter one or the other or BOTH.
So here's what I got I set two primary keys to try and find the row but I'm gettin all sorts of problems, for example when I set FirstName & Surname as primary key which you need to do to use the find method i get an error as it expects two values..
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=UserSQLEXPRESS;Initial Catalog=StudentTeacherDB;Integrated Security=True")
[Code]....
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Nov 24, 2009
I am trying to create a form which will be fed by an underlying database to create multiple form fields for each entry in an underlying database table. This is for a program to monitor patients under anesthesia, and prior to surgery, the doctor will choose which monitors they will be using. Then, on the actual monitor screen which will pop up every X minutes, there will be a text box and a check box for each chosen monitor. I am relatively new to VB, so I have tried to illustrate what I am needing but using the logic that I know from my previous life in PHP.
I am using DevExpress's layout control to place the form fields, so that is the code in the middle of the first loop (on_load), and I know that part works, I just need to know how to name the fields and then recover those fields and commit the values to the database. (the text boxes are added to the database, the check boxes are used to determine if an entry is made for that monitor- i.e. at the end of surgery if a monitor is turned off). I know that my syntax for naming the fields is no where close to correct, and it probably would not work in PHP, but I remember doing something like this in a PHP application I built long ago. [Code]
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Sep 29, 2009
I don't think this can be that hard but I just can't get my head on it. I have a connection to an Access DB, put three text boxes representing three columns in the DB. Using the DataNavigator everything works. But what I want is to be able to enter text in say textbox1 and have textbox2 and 3 update, like when using the navigator.
Add: I want this to function like when you enter a record number in the Navigator and hit Enter, bam, goes to that record and all the text boxes update. I want to enter a number in textbox1...
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Jun 1, 2009
Given a filename, how do I efficiently search for that file on disk?
(Visual Studio 2005, i.e. .NET 2.0)
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Sep 8, 2009
i am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
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Nov 4, 2011
What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
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Jul 10, 2009
I am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
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Jul 11, 2009
I am trying to make a program with a bar code reader for the first time. I want to differentiate a bar code entry to keyboard entry. My questions: 1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
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Feb 4, 2009
have made the data table in vb code, and it works flawlessly. It gets its values from labels which are part of a calculation.It shows the information to the user in a datagridview. Now i would like it to add new rows and fill them in if the user has already entered the data once and it has been logged in the datagridview.here is the current
'DATA TABLE
Dim Table1 As DataTable
Table1 = New DataTable("CF Log")
[code].....
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