Alter Table - Make Existing Field "REQUIRED"?
Jun 10, 2011
I have a VB.Net application that is using an Accss 2003 Database (Design Master) and I'd like to run an SQL Transact command to make an existing text field requried. So far I have tried the following and both appear to give an error and do not make my field "Required" (IS NOT NULL).
ALTER TABLE tblJobs ADD CONSTRAINT LeadSourceNotNull CHECK (LeadSource IS NOT NULL)
ALTER TABLE tblJobs ALTER COLUMN LeadSource IS NOT NULL
simple method to make an existing Access 2003 Table field required?
PS: I will be running a query to make all row entries that have a null in the LeadSource field equal to "Unknown" before I ALTER TABLE?
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Feb 10, 2009
There is a label control on .aspx The text "hello" comes from database i.e. label1.text = "hello" Note that, I do not have permission to change the UI code.
I would like to alter the value of the field in the table to show the text as bold i.e. <strong>
To have the text displayed as highlighted i.e. bold, I manually modified the text inside the field of the table to show
<strong>hello</strong>
Is this ok? It does not seem to work because in the label control I see: <strong>hello</strong>
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Jun 23, 2009
As you can see below in the code the " & tblName & " will work fine but instead of using the BankName (which the user cannot change because it is in the code) I would like to do the same as I did with the Table name and use a variable that gets its name from an excel spreadsheet rather that an actual name hard coded in a VBA module. I would like the variable field name entered in the Excel Spreadsheet by the user just like the table name is filled in by the user. The problem is getting the ADO SQL string ( cmd.CommandText = "ALTER TABLE " & tblName & " Add Column BankName Char(25)" ) to recognize that the value in the Variable " & fldName & " is the field name to be used.
Sub AddFieldToAccess()
Dim cnn As ADODB.Connection
Dim cmd As ADODB.Command
[code]....
'If I do this I end up with a field named BankName what I need is the name in the variable " & fldName & "
cmd.CommandText = "ALTER TABLE " & tblName & " Add Column BankName Char(25)"
cmd.Execute , , adCmdText
Set cmd = Nothing
[code]....
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May 6, 2011
I have 5 combobox and they are required. I would like the user to put input or select the combobox. If no input, msgbox comes up then he has to insert input or click on a custom cancel button i have made.
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May 28, 2010
I have 2 text boxes one for email and one for Name. If text is entered in email I want to make Name required field. How can I do this using .net validation controls?
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Jul 18, 2011
Does vb 2010 have a 'REQUIRED" property or control that allow you to make a textbox a "required" field? I googled and saw something about required property in controls in toolbox but somehow I could not find it anywhere in my vb 2010 toolbox. Would it be easier to write it? Does anyone have sample code?
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Oct 23, 2009
I get a Syntax Error with the following code"ALTER TABLE receipts RENAME COLUMN payees TO payee"what I am doing wrong
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Apr 8, 2011
I have a class set up to hold values on a registration form (VB.NET, MVC), and among the properties is a Password property:
[Code]...
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Nov 25, 2010
cmd = New OleDbCommand("ALTER TABLE " & ComboBox1.Text & " ADD COLUMN " & TextBox1.Text & " TEXT", cn)
Syntax error in ALTER TABLE statement.
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Aug 30, 2009
I want to add a new table in my accdb and copy the content tfrom an existing table into the new one.
Is there an easy way to do this?
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Dec 18, 2010
I need to set validation on a textbox where the user types in their email address... This is not a required field though so I want to allow the form to be submitted if the textbox contains the default text ("Email address").I've posted the code i have already to ensure a valid email address is typed.
<asp:RegularExpressionValidator CssClass="errorpopup" Display="Dynamic" ID="regexpEmail"
ValidationGroup="mySubmit" runat="server" ErrorMessage="<strong>Please enter a valid email address.</strong>"
ControlToValidate="tbEmail" ValidationExpression="w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*"
SetFocusOnError="true" />
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May 29, 2009
I'm using VB 2008 with .Net 3.5 and I want to check that a combo box has a selected value greater than 0 (default = Nothing Selected) before allowing the user to move off the tab page to another tab page. The Leave event does not allow me to cancel and the Validating event on the tab page does not fire unless the user has at least visited the combo box field.
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Oct 5, 2007
I have three required field validator ,in that 2nd validator should not fire even if I don't enter any any value in the textbox. I tried with Javascript. But couldnt do it.
<%@ Page Language="VB" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "[URL]">
<html xmlns="[URL]">
<head runat="server">
<title>Untitled Page</title>
<script language ="javascript" type ="text/javascript" >
function step2()
[Code] .....
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Sep 8, 2009
Is it possible to put Number validation in required field validator in asp.net text box?
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Sep 16, 2011
I'm trying to use the ExceptionMessageBox to prompt a user that a field is required. I'm getting a syntax error saying "Type 'ExceptionMessageBox' is not defined". I added the ExceptionMessageBox as a reference, but still has that same error. I'm using Visual Web Developer 2008 Express.
Here's the code:
The bolded part is where I'm getting an error.
Try
If rptAcctNo = 0 Then
Throw New ApplicationException("Error occurred")
[Code].....
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Dec 21, 2011
I have a form on an asp.net (VB) page which has 2 sections.
All of section 1 is always required, but section 2 is optional. However, if section 2 is started, then all fields are required.
I'm stuck as to the logic I need to create this validation.
Here's my code:
<form runat="server">
<div>
<asp:TextBox runat="server" ID="field1a" Text="Name" />
[Code].....
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Feb 24, 2010
I am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
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Dec 29, 2010
login function but with 3 required field, let say username, password1, and password2
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Oct 16, 2009
Ive created an email sender but ive run into a problem. It will only send mails to hotmail. How can i alter the code to make it send to all emails , yahoo , msn , gmail etc.? [code]
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Feb 27, 2012
I have used ADOX for create some fields in my database in access but the required property of this appended fields (columns) are set in "yes" but I want to be them "No" who knows how can I solve this problem
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Jul 22, 2010
I am creating a database in VB.NET for a movie rental place. I currently have three forms;
Member Information
DVD Information
Borrow DVDs
What I would like to do is when I am viewing a member's details, if I click a button 'Borrow DVD for Member', the member's ID number transfers over to the Borrow DVDs table in the Member ID which also would hold some information from the DVD Information table, but I'm sure if i can figure out how to do this firstly, I will be able to apply the same rule and work it out myself.I have been trying to use a query statement like;
INSERT INTO [Borrow DVDs].[Member ID] [IN goodstuffvideos.mdb]
SELECT [Member Information].[Member ID]
FROM [Member Information]
but that has been coming up with error codes and completely not working.
Borrow DVDs table fields are: Borrow ID, Member ID, DVD ID Number, Hiring Fee, Borrowing Limit?
DVD Information table fields are: DVD ID Number, Title, Rating, Hiring Fee, Borrowing Limit Member?
Information table fields are: Member ID, Family Name, Given Name, Address, Town/Suburb, Postcode?
The error coming up is; Error in INSERT statement. Unable to parse query text.And under that it says The query cannot be represented graphically in the Diagram and Criteria Pane.
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Feb 15, 2012
I am having two tables with a similar structure. I want a code to select data from one table and update the same in second table and then delete the records in the first table.
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Sep 10, 2010
I've been looking through the book I own and I've been looking online but I just don't understand what code would I write to have it check the text box or input box for the right letters in a word?
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Feb 7, 2011
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...
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Jul 8, 2009
I currently have this working already for one of my combo box's, but when i try to use the same code i get this error ''There is no row at position 6.'' . The are 2 fields in the table asset_type_id, asset_type_name', im trying to dispaly the values in a combo box for the field 'asset_type_name.
the code for ' Friend Sub RetrieveCustomerInformation2()' works but the other friend sub throws the error.
Imports System.Data.SqlClient
Imports System.Data
Imports System
Imports System.Data.OleDb
[Code]...
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Feb 23, 2011
I have a query that I have to run that requires me to get rows from a table based on the value of a field in another table (which I have gotten earlier). I currently have it done like this (simplified).
[Code]...
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Oct 5, 2010
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
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Dec 1, 2009
I am trying to add a row to an existing table within an Access database. I have a dataset and 8 tables setup in Data Sources.
Searching on the MSDN site I found this page.[URL] but have not been able to get the updates to work. No errors come up and the data is not saved to the table Here is the code I am using.
Public Sub TestTableAddRow(ByVal sItem As String)
Dim dsQuarterMidget As New QuarterMidgetDataSet
Dim NewRowAdd As QuarterMidgetDataSet.tblDriversRow
[code]....
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Feb 21, 2012
I need to take rows that I have made from a previous table and somehow reuse them in another table that I am going to make, and I cant figure out how to. Its not necessarily the rows that's tricking me but its what the column name is looking for. Its looking for a string and I don't know how to make it so VB spits out what I want it to.
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Mar 30, 2010
Is there a way to make an input box value required? I have an input box that assigns the value to a label on my form, and I would like to know if you can prevent the user from leaving it blank and instead require a value?
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