Increment A Entry In A Sql Table Via Asp.net By 1?
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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Sep 11, 2009
how can I get the last ID (Identity Increment) in my table. diferents answer came up. I simple said, do a query and you will get your ID.But today I decided to do something diferent, and here goes my approch, my code: Sub Button3_Click(ByVal sender As Private
[code]...
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May 3, 2011
How to increment to the next row and add a new member if the if condition is not met.[code]...
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Jan 11, 2011
Why when I add new item in my database table it will show negative increment?
how can i change it to positive increment or use only integer increment.
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Jun 14, 2011
I have a teradata backend that uses auto increment. The form is databound i.e dragged a column to the form which gave me the navigation header etc.The problem I'm having is when user 1 opens a record the auto increment goes +1, let's say we're at 45 now, then user 2 opens a new record and it also goes to 45 as user 1 has not saved. Why is the databinding not locking 45 when the first user opens it
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May 8, 2012
I have an SQL statement which i need to code in vb:
CODE:
Notice the fields prodno1 and prodno2 in the table structure.. this is part of a number of sql statements i need to run and put inside a loop. my problem is i want to automatically use this same code such that on the next loop, this sql statement is going to be:
CODE:
Note that in this "2nd loop"
- the table name is now r3 from r2 in the first SQL statement
- there are now prodno1, prodno2 and prodno3 instead of just prodno1 and prodno2
- in the WHERE clause, the p.prodNo becomes p.prodNo2
And so on and so forth.. so for the 3rd loop
- there's going to be r4
- there's going to be prodno4
- in the WHERE clause i will use p.prodNo3
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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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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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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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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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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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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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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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Mar 17, 2008
Do we have increment operators in VB.Net? I want to use post increment and Pre increment operators in VB.Net.I want touse the statement like, i++ and ++i.
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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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Jun 14, 2011
came across this issue while converting a for loop in C# to VB.net I realized that the increment operators are not available in vb.net (++ and --)whereas i was able it do something like cnt +=1 .In VB, a STATEMENT cannot be just an EXPRESSION. why this doesn't work in the same way as it does in C#.
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Nov 16, 2011
What code do I have to program to make this possible:
If Button1 is clicked, the number in Label1 increases by 1.
If Button2 is clicked, the number in Label2 increases by 1.
I don't want it to start off at 0. I don't want there to be any text in Label1 and Label2 at the start of the program.
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Apr 10, 2011
I want it to increment by 1.I have this code from net but I found hard to understand the first line :
If Decimal.TryParse(TextBox1.Text, userAnswer) Then
If answer = userAnswer Then
score += 1
TextBox2.Text = score
[code]....
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Apr 14, 2011
If I have a textbox1 and button1, where in textbox1 the date will display as 01-Apr-2011, I want to click on button and have the date in textbox1 increase by 1 day.So, if textbox1s date is 01-Apr-2011 then in textbox1 after clicking the button, textbox1s date will be 02-Apr-2011, a further click will get 03-Apr-2011 and so on.How do I do this using VB.NET?
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Aug 25, 2009
I am trying to use a datagrid in the absence of a basic grid control. I need to be able to increment the rows. i tried[code]...
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Jun 20, 2012
im doing a project like now a simple. how can i increment a value automatically im using an ms access.
my data type for that is a number i have a ID no. Field and when i add a record i want to automatically add a ID no. after i add a record the ID no. will become this 12-001 and add another one the id no. will automatically become 12-002 i have no textbox in the form.
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