Way To Access Fields
Oct 14, 2011I am new to VB.Net and was using VB 6.0 for the last 10 years. I am having some difficulty in accessing fields and changing these.[code]...
View 4 Replies
ADVERTISEMENT
Create Word Form Fields With Memo Fields From Access?
May 27, 2012I'm trying to create a table in Word using data from a table in Access. There are four fields in the access table that I need. 3 fields are text which I can populate the Word without any issues. However the fourth field is a memo with >255 characters.I'm struggling to come up with the proper code to allow me to populate the Word field with the memo data that has more than 255 characters. The code I have so far is listed below. But when it hits the memo field, it crashes on the line I marked with **. I know it's not text, but I've tried many different field types, but nothing has worked so far.[code]...
View 1 RepliesCompare Two Access Databases With Two Fields Each And Write The Results To A Third Access Database?
Apr 22, 2010I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?
Imports System.Data.OleDb
Partial
Class Form1
[code]....
Display All Fields Of A Row From MS Access To A Listbox In .Net?
Mar 17, 2012I'm trying to pull all records and fields from a MS Access table. My fields are: numOne, operator, numTwo and result. I'd like to display those fields in a listbox as the following output: 1(numOne) +-/*(operator) 2(numTwo) = 3(result) or simply 1 + 2 = 3. I was able to get some coding going. The problem that I have is that I'm not finding a way to add the fields on the same line, since I can find the right syntax to have all fields added together.
Dim ConnString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersLeo DaCostaDesktopAPUVB AdvancedDaCosta Weeks 5-6MathOp.accdb"
Dim mySelectQuery As String = "SELECT * FROM MathOp"
Dim myConnection As New OleDbConnection(ConnString)
[code]....
Fields In An Access Database Table?
Jun 22, 2010How do i find out the number, names and datatype of fields in an Access table
View 16 RepliesInserting A Lot Of Fields Into A Access Database?
Apr 3, 2010I am trying to enter a record into an Access database via visual basic programatically.I had this working fine when I had the datagrid bound to the database but now I have decided to do it all at runtime to save on resources at runtime.When I unbound everything and tried running it with my existing code
Try
ds.Tables(
"tblProduction").Rows.Add(row)
[code]....
This is the line of code that has to have another 30 entries in it.
Sum Fields In Ms Access Using SQL And Then Place It In Datagridview?
Jun 12, 2011Does anyone know how to sum fields in ms access using SQL and then place it in datagridview? I have a ms access table with fields 'Points' and 'FacultyID'. I would like to know how to sum all values on 'Points' field and place it in datagridview. Also, I would like to know how to filter values from 'Points' based on selected 'FacultyID'.
View 1 RepliesUpdate Fields In Access Database?
Jan 5, 2011I have been tasked with writing a program for our yearly reviews. We want all of the information gathered in the form to be submitted to an access database. I have created the form and the database. I can send info to the database but it is put on a new line everytime it is submitted. I would like to check the first column of the table to see if the user login is already there. If it is there I would like to update the information. If it is not there I would like to create a new row. This seems simple, but I can not figure out how to see if the user login is already there.[code]...
View 4 RepliesUpdate Some Fields In Access Using VB (2005)?
Jul 13, 2010I would like to update some fields in access using visual basic(2005).
I established the connection with the DB(access 2000) and when I run the program I edit the fields on DataGridView.
Then I click on the update button and when I access again my DB I don't see any changes... :s
Code from my updateButton:
Me.TableTableAdapter.Update(Me.TestDataSet1.table)
I dont have any problem with the conection to the DB and when I run the program I see all the fields from the DB(it has 2 fields).
Assigning Access Fields To Variables Or Textbox?
Jun 20, 2011I'm facing a problem with my current member card reader development.
I'm reading the card number (just a serial number of 4 digits) with a card reader. this seems to work fine (even converting the text string to integers).
This number is then put in a query to find the exact record that corresponds with this number
Me.JSM_LedenTableAdapter.GetDataByKaartnummer(IntCardNr)
Create A Table With Six Fields In Access Database?
Apr 9, 2012so far i have this for my code:
Using myConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & databasePath & ";User Id=admin;Password=;")
[Code]......
This did not work but did when i just tried creating the table and not the fields.
DB/Reporting :: Searching Across Access Database Fields?
Mar 30, 2010I use the following code in vb.net to search across several Access database fields, which works well, is there a way to find out WHICH field had the search data in?
[code]
Public Function Incomming_Number(ByVal strNum As String) As String
Dim oConnect As New OleDbConnection
Dim sql As OleDbCommand
[code]....
Hide Primary Key Fields On Forms Like You Can In Access?
Feb 22, 2011I have noticed that whilst in the past using MS Access you could have a primary key field on a form and have it not visible. You could still use it for Dlookups etc using the value in the field no problem even though it is not visible. In Vb if i hide a textbox that is bound to a PK field in a datasource and try to use its value in code i get an error. Making the field visible again prevents the error. My goal is to use a PK bound textbox not visible to the user but still read its contents.
Also, what is the equivalent of a simple DLOOKUP in VS2010? EG. You have the PK and want to know, say 3 other pieces of information from the record based upon the PK you have.
IDE :: Viewing MS Access Database Fields In Vb 2008 App?
Apr 17, 2009I've been attempting to tinker around with connecting a MS access database to a vb 2008 app. I've successfully connected and can access the data by using the add data sources tab. But what I'm trying to do is create a form that has a (1) single line text box, (1) button, and (1)multi line text box. I enter a name in the single line text box, click the button(search db), and when the info is found, it is displayed in the multi-line text box.
View 1 RepliesLinking Individual Fields Between Two Tables In An Access DB?
May 12, 2010Im not too sure if this is the correct place for this question, but I couldn't find anywhere else..Heres what i want to do. I have two tables in an Access DB. TableA and TableB. Each Table has only one column called Picture, and that column is filled with the names of pictures (picture1, picture2, picture3, etc)
Thing is, that The pictures in TableA have equivalent pictures in TableB. They are not named the same, but the pictures themselves are the same i.e.: TableA Picture1 = TableB Picture3, TableA Picture2 = TableB Picture5.
What i Would like to create is a form that has two datagrids, or Listboxes populated with the data from each table. One for TableA, One for TableB. When the User selects a picture from one of these controls, The other control must show which picture the selected one corresponds to (if i select TableA Picture1, TableB Picture3 becomes selected showing that they match)
I think that most of the work will be at the actual DB, somehow linking each and every field, maybe a one to one link between fields/cells in the DB, then in VB calling that one record that was clicked on, seeing what relation it has to the other table,
[Code]...
Search Form With Different Fields To Access Database
Jan 21, 2012I have finished my database using Dreamweaver ASP VBScript and Access, the only thing left is to create the searching system. My search form works fine when posting just one filed. The results page Recordset goes as follows.
Code:
I need 7 different fields on my search form, this what I did but it doesn't work.
Parameters:
Name: MMColParam
Type: Text
Value: Request.Form("Ref")
Default value: 1
Name: MMColParam
Type: Text
Value: Request.Form("New_resale")
Default value: 1
"Price" is a special one because this is a list menu with different amounts, like 50.000, 70.000, 90.000, and so one. The idea is to make this list menu post to the result page, only to display records under or equal to the given value. less or equal > than 50.000 or 70.000, etc.
Update Some Fields Of A Table Of Access According To The Value Of Parameter?
May 19, 2010I have to update some fields of a table of access according to the value of parameter. If this paramter is "true" I need to update.
Table
idInvoice
price
[Code].....
Updating Fields In An Access Database Using VS2010
Oct 7, 2011how to update fields in an Access database through VB. What I'm supposed to do subtract the quantity of the daily orders from the inventory quantity. My textbook is a little bit vague at this point, because the only way it describes updating the DB is manually through the BindingSourceNavigator. I don't want to enter it manually, I want it to subtract the quantity from the orders table.
Public Class frmMicroland
Private Sub frmMicroland_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
VS 2005 Adding Fields To Ms-Access Database From .NET?
Dec 27, 2009I am using VS 2005 and MsAccess 2003. I am already having some fields in the table, and i want to add more fields from the .NET application. Is it possible to add more fields from the application to the Ms-Access Database. Also it is possible to change the order of the fields from the application?
View 1 RepliesAccess Data Fields Treated As Text When They Are Numbers?
Feb 13, 2012I have an Access database file, which the application needs to connect only when it needs to run a query. The database has five fields. The first two fields contain numerical values (double). The rest are text values.
Well, I don't have trouble accessing the database file. In fact, I don't have trouble running a query on those three fields containing text values, either. But I have trouble making a query on numerical fields. If I run the following, the application will exhibit a data mismatch error.
'MyConnection As OleDbConnection
'MyAdapter1 As OleDb.OleDbDataAdapter
'nIP is a large number like 3647665152
[Code].....
Access Database Field Manipulation (multiplication Of 2 Fields)?
May 20, 2008I want to open an Access database and I want to multiply 2 fields between each other. I am a newbie and till now I only have found the way to open the access database and create my Recordsets. So, for example, if I have table Mytbl that is a recordset with 4 fields (columns) and I would like to multiply column 3 with column 4 and put the results in a new Recordset, do I have to do it by multiplying each and every record
View 4 RepliesAccess File With One Of The Fields Indexed (NO Dupes Allowed)?
Nov 24, 2009When writing to an Access file with one of the fields indexed (NO dupes allowed), I am getting the following message in the Immediate Window "A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll", when I enter a dupe.
I have put in a TRY, CATCH to catch the error and display a msgbox with the error. Is this message in the IMMEDIATE WINDOW just a warning message (generated by access), or is there something wrong with my actual program? My program does not actually crash, it seems to be working great.
Access To SQL Server Based On Fields Selected In ListView?
Jun 4, 2011I am required to send MS-Access table to SQL Server Database, based on fields Selected in Listview.
1)Till now i am able to get Access table names and their field in List view.
2)I am able to check whether database exists and Whether table exists in SQL Server with same name from VB.Net.Now i don't know how to insert Access Tables based in Fields Selected in ListView to SQL Server.
Avoid Error When Displaying Empty MS Access Fields In VB?
Feb 15, 2012I have a database with lots of fields, some of which are still empty and are to be filled in at a later stage. Is there any way of writing an IF statement (or any other method) that will allow these empty records to be 'shown' in my textboxes in Visual Studio, without receiving the error:
Conversion from type 'DBNull' to type 'String' is not valid.
Import Access Request With Null Fields In Excel
Mar 8, 2011I have tried to import an Access Request in Excel. However, the last field (SP) contains Null cells and it seems that it prevents the importation in Excel. There is a way to change Null cells?
Sub Creating_Universe()
Dim connFI As ADODB.Connection
Dim rs As ADODB.Recordset
[Code]....
MS Access Adodb In NET Returns 34 In Fieldcount When Table Has 42 Fields
Apr 12, 2010Why MS Access adodb in .NET returns 34 in fieldcount when table has 42 fields ?I see 42 fields in table of my MS Access mdb database. But ADODB layer in .NET sees only 34 fields. The Outofrange exception occures when I am calling method getOrdinal("FieldName") of reader class.
View 1 RepliesMs Access And Vb Combination - Show Every Fields On Vb Forms Without Any Coding
Jun 18, 2012I have a complete ms access system build(tables, forms, reports, query). I am in the process of using vb to re-create the system. I managed to show every fields on my vb forms without any coding. However I have some wrong information in my combo boxes. For example I will have repetition(duration, ie 3 months is showing 5 times). Also when I use the arrows only three records are showing. It says 104 records and only shows 1-3. I have also checked all the data in vb that has been transfered from access and it is all similar, ni repetition.
View 2 RepliesProgrammatically Create A Table And Add Fields To An Access Database
Sep 16, 2010I have the code I am using below. On 3.5 framework Access 2003 database vb net 2008
I already have the database created but need to be able to add Tables and fields with the correct datatypes. So far it's not working but i don't know why or where the error is.
Private Sub MDIParent_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Try
[Code].....
2010 Express Selecting Random Fields From Access 2003?
Dec 12, 2010I'm am trying to determine the total number of fields under a particular heading given that the other Heading's total number of fields are > or < than the heading in question. The query, shown first in the attached code, works well if there is one column in one database table, however it does not work well when there are a number of columns with a different number of fields respectively. The CategoriesID encompasses the entire tables contents.I devised a function to determine the total number of fields within a particular column and then attempted to incorporate this, without success, into the second query, shown in the code.
Private Sub GetRandomHeadingFields()
Dim varNumberHigh As Integer
varNumberHigh = TotalNumberofHeadingFields()
[code]....
Creating Data Access Layer - Return My Object But Not All The Fields
Jun 21, 2010I'm creating my Data Access Layer and I want to return my object but not all the fields so this is the code i'm using
CODE:
I then call this method in the Business Logic Layer
CODE:
lastly I try to call in in my user interface and bind it to a DataGridView
CODE:
But I keep getting this error: Unable to cast object of type 'System.Data.Linq.DataQuery`1[VB$AnonymousType_0`3[System.String,System.String,System.String]]' to type 'System.Collections.Generic.IEnumerable`1[PP_DAL.DCProposal]'.