How can I Refer to a Database Field insted of a Texbox or Label text?
I have tried somting like this, but it does not work. Can some one point me in the wright way?
If TableName,FieldName <> Nul Then
. . . . . . . . . . . . . . .
End If
I have names of all labels in a table of an Access database (one field is a form name- it can be repeated, the second field is a label name - it must be unique for the same form, the third field is a text of this label). E.g. the first record has field1="Form1", field2="Label1", field3="Smith" My question: How can I refer to a label programmatically using the Access database? E.g. Form1.Label1.Text= "Smith" In C languge there was the opportunity "remove the quotation marks" from the text ("Label1") and get the literal (Label1). Is this opportunity in VB.NET?
View 10 RepliesI have a form that I am loading text (strings) from a database into a label.text (so the text from the database shows up into the label) I have done this code in a class that keeps all my database stuff seperate.
Public Function getQuestions() As List(Of String)
Dim question As New List(Of String)
objConnection.Open()
objReader = objcommand.ExecuteReader
[CODE]...
Within the form that the label is in I have done this code
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text(db.getQuestions().ToArray)
End Sub
I am basically making a quiz, so that when the form loads, question 1 is on there is 4 possible answers. You then press next button and it goes to the next question.
If there another way of getting the input from a texbox to appear on a label besides this way:
Label1.Text = TextBox1.Text
my text box will not respond to vbcrlf insted it displays 2 vertical bars (||)[code]
View 4 RepliesI get some funny display errors when I attempt to pop a fraction into a text label.[code]Do I get 33.3% here? No, but I get 33.333333333333 - etc - depending on how big my label field is Plus I also get an error message trying to add the % sign at the end.how to round off and display fractions and percentages in a Label.Text field?
View 2 RepliesI have an Access database where I want to store the contacts in a company: In this database I have a table named "users" where I keep the users which will have access to the database. In the main table, named "contacts", two of my fields "insert_user" and "contact_user" refer to the user who entered the contact information and the user who actually made the contact. The way I am thinking it, I will have to set both of the fields as foreign keys to the same table/field, namely "users"/"username".
So:
I set two foreign key constrains in two different fields ("insert_user", "contact_user"), which refer to the same table/field ("users"/"username") in an
Access database, using VB.Net OleDB (See the SQL Statement below)
ALTER TABLE contacts ADD CONSTRAINT insert_user_foreignkey FOREIGN KEY (insert_user) REFERENCES users (username)
ALTER TABLE contacts ADD CONSTRAINT contact_user_foreignkey FOREIGN KEY (contact_user) REFERENCES users (username)
I open the database with MS-Access. I see that all the tables are fine (as they should be).
However when I click on relationships at Access I get all my tables plus a table named users_1 connected to "contacts"/"contact_user" (the table users is only connected to "contacts"/"insert_user")
It is very strange that in the Table View of Access I don't see this table, but only in the Relationships View.
Questions
Is my thinking right (to set 2 foreign keys, that refer to the same table/field)? What is this table "users_1"? Will my database work or am I doing something wrong?
I have a string called testlabel, and would like to refer to it via the string "testlabel", how do I do this?
for instance:
dim testlabel as label
dim a as string = "test"
dim b as string = "label"
'what is the line I need here? a & b.text = "hello world"
to get testlabel.text to read "hello world"?
Im using the following code to wrap html tags around text in a texbox and transfer the text to a single multiline textbox from form1 to form2.[code]My problem is that if for example textbox5 and textbox6 are empty i want the program to continue anyway.
View 6 RepliesI already know how add text but my problem is add a new line without remove the others lines. for example textbox1="text1"When I press a button I want to add "text1" into the txt file
View 7 RepliesI am writing a programme for Payment calculations.I have four textboxes txtPaymentDue, txtDiscount, txtBalancePaymentDue, txtAmountPaid, txtChange
PaymentDue, BalancePaymentDue and Change are calculated by the programme.My requirements are:
1) when i enter Discount in txtDiscount on EnterKeyPress cursor should go to txtBalancePaymentDue wherein it will display the calculated BalancePaymentDue and on next EnterKeyPress the cursor should go to the txtAmountPaid and finally on EnterKeyPress the cursor should move to txtChange.
2) When I enter a digit in txtDiscount it should take it as right to left sequence and it should allow the insersion of digits .......like if i want to type 36.45 then if i type 5 the texbox should immediately look like this 00.05 when i type next digit it should look like this 00.45 likewise when i type next digit it should display 06.45 and finally 36.45.
I'm trying to design a words game that's give you the first two letters from the word and you insert the rest to make a word (for now I'm just using "co" as example and I have just one table in the database for it). The word will be written in textbox to be compared to a database field. If the word exist in the field the word will be displayed in a label with blue color and the score will increased by one if not the word will be displayed in the label with red color. This should happen three times with three words and I have different label for each one.
the name of my database is database1 and it have one table "A" wich contain "Comp" and "word". I tried this game with array of word before and it was working. Now I'm trying to use database instead of arrays but its not working. [Code]
i want the user only enter text value in texbox. I use this code to do but it gives me a error.
[Code]...
I did populate data from db into the combo box and display it into the text field .
Below is my code :
Imports System.Data.SqlClient
Public Class MPEJobEntry
'declaration of connection string
[code]....
I am using Visual studio 2008 to build a web application. What I am trying to do is retrieve data from a database and populate text boxes based on the results.
View 4 RepliesIs there a way to detect whether text inside a textbox is highlighted from a user using a mouse either by double clicking or click and drag inside a textbox? I'm able to use the mouse doubleclick event as a way to detect the double clicking. However, i am stuck with click and drag to highlight for more than two characters.
View 4 RepliesI have a datagrid with textboxes on it that are bound. Displaying the data pulled from the db works. But when a user updates a textbox I am unable to extract that data. I have tried a few options I have found involving using CType.
[code]...
I want to convert a database field that is text into a VBasic String...
View 3 RepliesI want it so when I click a button it takes the text from a texbox and finds the id or name that is stored in a .accdb file. I have already put a datagridview control and setup my connection to the databse. I just need help with the search button code which will pop up all the results in the datagridview control.
View 1 RepliesI need to add (Append) additional text to the Comment field in my access database from a RichTextBox. I am having difficulty with the sql connection syntax.
View 6 RepliesI am trying to bind data from a text box on my form to a field in my database table. First of all I have created a DataSet, BindingSource and Table Adapter in the forms Design view, but I am having from there. Under the properties of each text box I have set the DataBindings (Text) to the field in the table under the forms instance and DataSet rather than the Projects Data Sources. I am very rusty at Visual Studio 2005 and that is all I have to work with.
View 2 RepliesI am creating a game where i have made a login form thats uses the mysql database for the user accounts.The database stores account's login info, level, XP, Coins.
[Code]...
I have question about Label.Text.
When run the code Form1 load together with Form2.On Form2 I have Label1.I need that Label.Text flicker or blinking.
Is it possible to link a database .mdf file to a Label or to a TextBox.text or to any form control
View 1 RepliesThose who are looking for an example like this, might find it useful (or not). I know i was looking for one like this for over a week. Ok now, to make this codes work properly, you have to make a Database in Ms Access (I used MS Access 2007) . Create a table of two Columns, one name Debit and one name Credit. Both of the Columns Data Types must be Long Integers or you might get some conversion errors at run time. Now save the database in Access 2000-2003 Database format. And last of all, put the database in your projects DebugBin directory to avoid the database Connection Errors.
[Code]....
I'm using Visual Basic 2008 Express Edition, so I have a combobox that gets filled with items from a data base made with Microsoft Acces, the combobox is filled with the values stored in a column from a table in de database so the user can select an "option" from it, I want to add labels that show the values for the corresponding row of that column. I used the Data Source panel to drag and drop the labels corresponding to the values that I want and it works it show the value that I want when I compile the application (at least I think it does, it could be that it's only selecting the first entry) the problem is that when I select a diferent entry on the combobox the labels don't refresh with the new values. How can I do that?
edit
how does Visual Basic Populates de combobox and gets the value of the other Acces DB entrys to change the .text value of the labels? And I mean the actual code that does that.
I have sucessfully written in excel VBA. The idea is to used the textbox1_change event to find a match in column A of table and once it finds the record, return the value of column B as label1.text. [code] In VB 2008 it's a lot different. I have set up the form the same way with the textbox and labels. I have made a dataset with (1) table (Table1) with (2) columns. Lets call them column A and Column B.I have added the dataset as a binding source to the form and also a table adapter. I also have a standardized query made for the dataset with a very simple SQL statement "SELECT Column A, Column B from Table1"..In order to get the user input to start searching Column A I assume under the textbox_change event i would put something like: [code] I'm getting a bunch of errors of course. Would somepne be able to give me some direction?
View 3 RepliesI would like to have a label's text recorded into a database when my button is clicked. I do not yet understand the database connection. I have created the db, and have the following
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Conn As String = "Provider=Microsoft.SQLSERVER.CE.OLEDB.3.5; Data Source=c: empTestDB.sdf;"
Dim tConnection As New OleDb.OleDbConnection(Conn)
[code]....
When I try to test this the .ExecuteNonQuery() becomes highlighted and says the given type name is unrecognized. My table is setup as table1 and the only 2 columns are datetime and temperature. I want the label text to go to temperature and I would like somehow the time the temperature was taken to go into the datetime field. I had the provider=microsoft.jet.oledb.4.0, but I changed it since I thought this was the one to use.
There are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
I created a local Database in VB2008 with 4 tables, the problem is that I have a textbox in one table and a combobox in other table and I want that the information that I put in textbox appear after in combobox from the other table... that's possible?
Table: Filmes ... Field: NomeTextBox
Table: Tempo de Aluguer ... Field: Nome_FilmeComboBox