Increment Datarow By Value 10?
Aug 9, 2009Public Class frmVisitor
Private dbConnection As New OleDb.OleDbConnection()
'To add a DataAdapter
[Code]....
ADVERTISEMENT
Use Post Increment And Pre Increment Operators
Mar 17, 2008Do 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.
View 5 RepliesUpdating A Datarow With Another Datarow?
Apr 28, 2010I have two datatables with similar structures that I want to make one existing row to be updated from another datatable.
For example, "tableA" has three columns: "one", "two", and "three"; with "one" being the primary key...
and "tableB" has three columns as well: "one", "two", and "three"; with "one" being the primary key.
Say there is a row on tableA that is different than a row on tableB (with a matching primary key). What I wanted to do, as efficiently as possible, is to take the that row from tableB and replace the one on tableA so it'll be modified.
I'm not sure if there's an easier way of doing that instead of using loops for setting the row's items.
Get Next Datarow?
Jun 29, 2010I am trying to look at the next datarow in a datatable such as For Each dr in dt.rows
type = dr("Type")
type2 = dr("Type")
how can this be the next record? Of course, I would need to write an exception for the last record...
Set The Value Of The Dtp From A Datarow?
Mar 16, 2011I have a form with a datetimepicker. On load of the form, I set the value of the dtp from a datarow, with the following vb.net dtpRequiredDate.Value = dr.Item("RequiredDate")
This works fine. But when the form is loaded subsequent times in the session (form is not disposed on closing, shown as dialog), when presented to the user it just shows todays date, not that set by the above code. Stepping through code, the Onload code runs, and the dtp is set by the above code. Checking the value in debug at this point, the value of the dtp is correct. There is no further code in onload. But by the time it is displayed to the user shows todays date again. I have set a break point on the valuechanged of the dtp but it never fires again after it has been set by the above code.
C# - No Increment Operator In .net?
Jun 14, 2011came 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#.
View 4 RepliesCode An Increment Of 1?
Nov 16, 2011What 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.
How To Increment Scores
Apr 10, 2011I 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]....
Increment A Date By 1 Day ?
Apr 14, 2011If 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?
View 3 RepliesIncrement A Row In A Datagrid?
Aug 25, 2009I 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]...
View 1 RepliesIncrement A Value Automatically?
Jun 20, 2012im 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.
Increment A Value By 1 Between The Rows?
May 4, 2009Can any body send me the code for incrementing a value by 1 between the rows Ex: I have 3 columns say ID,Date,PO_NO
ID DATE PO_NO
1 getdate() 112
1 getdate() 113
1 getdate() 114
[code]...
Increment With Integer
Feb 27, 2012I want to Use Progressbar1.Increment but I wanna use Integer but the problem is that the maximum value of integer is over 100 so i want to set the Integer.Maxvalue to 5 but it got an error when I tried using Integer.MaxValue(5) and Integer.MaxValue = 5, So I need to the the Maxvalue to 5. I use Vb 2005 Express Edition.
View 3 RepliesSet Numeric Up Down Increment To -1?
Dec 9, 2009Is there a way to make it so that when a person clicks the up arrow on a numeric updown it decreases the value by one? (only when they click it, not when they type a new value in)?I seek not answers, but understanding, that I may not solve, but learn.What good is a fish without the skill to catch it?
View 4 Replies.net - DataRow Is Not Changed
Oct 4, 2011Can anyone explain exactly why Method 1 in the following code does not alter the DataTable where the other 2 methods do? It's obviously some kind of referencing issue, but why exactly?
[Code]...
Adding A New Datarow?
Mar 14, 2011I am trying to add new operators (their name, category, password etc) to a dataset called "operators". (Though I could be adding any new datarow to it's relevent dataset). My program has allowed for the entry of all relevent data and filtered it to make sure it is acceptable. The user has pressed the UPDATE button and my program must now add the new datarow. (My code is in bold!).
I assume that I must first establish a connection to my database, so I start with :-
Dim Conn As New OleDbConnection(ConnectionString)
'I feel that something is needed here to reference OleDbDataAdapter - but what?
Conn.Open() 'Is this line needed?
Dim DSetOPERATORS As New DataSet("operators")
Dim DRowOPERATORS As DataRow = DSetOperators.Tables("operators").NewRow
[Code]....
Get Data Out Of A DataRow?
Sep 8, 2009I am trying to get data out of a DataRow. Example:
Dim dr_simslot = dsFSC.tblSimSlot.Select("SimID=" & simID)
What I want is to say something like this:
Dim temp = dr_simslot.columnname
This is because I know only one record will be in the datarow.
Get Last Row In (for Each Row As Datarow In Dt.rows)
Mar 31, 2012for each row as datarow in dt.rows
if row is last row in dt
msgbox("last row in datatable")
end if
next
how do i detect the last or first the row is in datatable
Get PrimaryKey Of DataRow?
Apr 19, 2012I have a master DataTable that may contain some DataRow.RowError. I create multiple subset DataTables from my master DataTable using the DataView.ToTable method whenever the user wants to apply a filter or sort to the master table. However, the ToTable method does not transfer the RowError property of the data rows in the master table to my new subset table. So in order for me to transfer the row errors from my master table to my subset table I have to use a loop. The code below works fine, but with one exception (see below code).
Dim dtMaster As DataTable = Me.ds.Tables("Current")
Dim dtSubset As DataTable
Dim dv As DataView
[Code]....
Note, the primary key may contain 2 columns, however this is a rear case. If you know of any other solutions to transfer row errors let me know. I don't have to use the Find method.
IDE :: How To Clear DataRow
Oct 5, 2010Code is in VB 2008,
In code i am using Datatable, using that select method datarow
Dim dt as New Datatable
Dim dr() as Datarow = nothing
[code].....
Auto Increment The Value Of The Date
Aug 10, 2011I have a datagridview with 3 rows, the first cell being a date. how can auto increment the value of the date in the first cell when I start editing a new row.
View 3 RepliesAuto-Increment According To Date?
Mar 15, 2012I want to save a unique indetification record considering this criteria:
FULLDATE/PROCESS#.
I.E: 03052012/1
03052012/2
03052012/3
...
03062012/1
03062012/1
For each date, I want it to start from one allover again.
Auto-increment Column's In SQL And VB?
Apr 24, 2011I have constructed my database and I have used auto increment the ID's of each column. When I was testing and inserting data into my tables the auto increment of these column's of course incremented.
Now I am looking to start each individual Id column at 1 and not at the number where it is now.
I know it has something to do with using max value and +1. I have deleted the entire table and have tried everything to re-insert my data and start the ID's at 1, but I have had no luck.
Also to,
I know within Vb I can use a datagrid view and add there and it starts at the max value of the column +1, but when I have another form to add data within columns the column number is not in numerical order, How do include code within that seperate form to auto increment ID column numerically?
Auto-increment Formatting?
Apr 15, 2012Private Sub Item_TypeComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Item_TypeComboBox.SelectedIndexChanged
'auto increment for each type of items
[code].....
Auto-increment ID When Edit Last Row
Jul 16, 2009When i edit last row of datagridview. The datagridview auto add new row. i want to write a code which detemine whether i edit last row or not , so i can auto increase my id ...
View 2 RepliesC# - For Loop With A Non-integer Increment In .NET?
May 28, 2010Can a VB.NET For loop be constructed that mimics this C# code?
TimeSpan oneDay = TimeSpan.FromDays(1.0);
for (DateTime d = startDate; d < endDate; d += oneDay) {
// some code
}
Obviously you could do it without a For loop (i.e., with a While); I'm just curious if there's a certain syntax to construct a VB.NET For loop with a non-integer increment that I'm not aware of.
Datagridview Cell Value Increment?
Jan 16, 2012There are 3 columns(Count,Item,Price) in datagridview which is bound to a datasource. The count is 1 by default and it should increment by 1 when i click on a button,so the count would be 2 if i click button again
View 1 RepliesDynamically Increment Variable Name In ASP.NET?
Jun 7, 2012I am using the AJAXToolkit Accordion control and dynamically adding panes to it based on a query of the database. For example:
Jane logs in and pulls up the page with the accordion on it. In the database she has five rows in the todo_list table. So, I need to dynamically generate five panes that contain the info. from the table...but if Joe logs in he may have only three rows, and Josh may have fifteen - so I can never know how many an individual will have beforehand.
So, I need some way to dynamically name the variables (or is there another way to do this). For example, here is some pseudo-code of what I'm trying to accomplish:
Dim i as integer
For each row in todo_list
Dim ap + i as New AccordionPane
Add some info from the row to the pane
Next
Get The Last ID (Identity Increment) in My Table?
Sep 11, 2009how 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]...
How To Increment A Column In Access
Nov 8, 2011I have a column in access table with numbers ranging 1-11.What I want to do here, is for the subsequent row to be +1.
View 1 Replies
