I have a visual basic .net application. It has a sql server database and a dataset for it. I have created an interface to the database (passing through my dataset) to add, delete, save etc records in a table.
The ID entry has identity specification:Yes and increment seed 1 When I add a record, instead of giving 1,2,3... as id in the textbox it produces -1,-2,-3 (Negative integers)
I am trying to make a sample Master-Detail relation ship database example in vb.net. When I add MasterTable a new row via bindingnavigator and save via savebutton autoincrement field goes -1 -2... negative values hence cannot get correct ID numbes saved in table rows till I close open sample application. How can I see correct autoincrement ID numbers in gridview after savebutton ?.Just ID numbers saved to mdb.but cannot see them i gridview and displaying negative weird numbers. This problem is important because without getting ID numbers cannot bind Detail table rows to newly recorded master table rows.
View 3 Replies I want to create auto increment number in vb.net like : -
01, 02, 03, 04 etc.. so it is in order.
I am using VB NET 2008 EXPRESS connection OleDb to MS access
I want to do the auto increment for my textbox MemberID
I have tried multiple ways and had no luck such as : -
If txtMemberID.Text = "" Then
txtMemberID.Text = 1
Else
[Code]....
I want to write the code not use the autonumber in Access as my lecturer does not want me to do it this way
How do I get to increment a textbox content after clicking on a button?
View 1 RepliesI have a form and some controls as dropdown and textboxes..
The situation is that when the form loads, i want the value in textbox to be incremented, everytime it loads..
This is something i tried.. I get the value '1' everytime !! It shows no sign of increment..
However, i also want it in the format 0001,0002 if possible..I tried something like this..
Private Sub Order_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
textBox1.ReadOnly = True
[Code].....
I have a form and some controls as dropdown and textboxes..The situation is that when the form loads, i want the value in textbox to be incremented, everytime it loads..This is something i tried.. I get the value '1' everytime !! It shows no sign of increment..However, i also want it in the format 0001,0002 if possible.
Private Sub Order_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
textBox1.ReadOnly = True
[code]...
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.
I am using delta plc. i want to send +1 to +30 & -1 to -30 numbers in 4 byte hex format(xxxx) in vb.net.
View 4 RepliesSimilar in concept to Math.Abs() - I'm looking for a function that when given a positive integer will return the same integer. If given a negative, will return zero.
So:
f(3) = 3
f(0) = 0
f(-3) = 0
Yes, this is simple enough to write on my own but I'm wondering if the .NET Math class already has this built in or if the same can be achieved by cleverly chaining a few Math.* calls?
I am looking for a way to test an integer value to see if it is positive or negative so I can perform the required actions.
View 1 RepliesSimilar in concept to Math.Abs() - I'm looking for a function that when given a positive integer will return the same integer. If given a negative, will return zero.So:
f(3) = 3
f(0) = 0
f(-3) = 0
Yes, this is simple enough to write on my own but I'm wondering if the .NET Math class already has this built in or if the same can be achieved by cleverly chaining a few Math.* calls?
I 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 RepliesI have a program that calculates values of a function, say f, with respect to another variable, say L.I have an array of f(L), for L going from 0 to a given integer value, say t-1 in steps of a value i.I need to export the values of this function to an Excel spreadsheet in a given column, and to do this, I would like to re-index the function f, since i is much less than one, and so the following loop I use (see below) won't work:
For L = 0 To t - 1 Step i
Sheet.Cells(L, 1) = L
Sheet.Cells(L + 1, 2) = f(L)
Next L
The first code in the loop will essentially load the values of L itself, at which the function is defined and calculated, and the next line will load the values of the function at each value of L.Since the indexes of the row and columns in an excel spreadsheet only go in steps of 1, I need to convert the indexes of the function, or the indexes to which L is loaded, so that it would be scaled so that the first entry corresponds to L=0, but the next is L=i, but loaded into row number 2, etc.
Can 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.
I am wanting to increment an integer by 1 each time i press a key. My problem is this, when i press the key, the integer is increased by a lot, unless i just 'tap' the key very precisely.
Is there a way to 'reduce' the sensitivity of pressing a key?
I 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 RepliesI 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.
I 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?
Private 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].....
When 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 RepliesI have a database with a simple table (userid, username). The userid field is int and autoincrement is set to true. When I add 2 records to the table, the user id will be 1, 2.
View 5 Replieshow to create an auto generated id like ED01,ED02 etc., so that when i am entering data the id should be automatically incremented
View 1 RepliesI am connected to a SQL Server Compact Edition Database. One of the tables involved has 3 columns - CompanyID, CompanyName and CompanyNotes. I have created a form in Visual Basic to add a new company to the database, and of course I don't want the user to have to manually put in the company ID.
In the dataset.xsd I have created an INSERT SQL query that simply inserts a new row with the CompanyID, CompanyName and CompanyNotes. I have set the CompanyID to auto-increment. However, when I tried inserting the name and notes it didn't like it because I set the ID field to be mandatory. How will I insert the new company data into a new row with a new ID?
The very basic code I currently use for adding a new company:
Private Sub btnSave_Click(sender As System.Object, e As System.EventArgs) Handles btnSave.Click
Me.CompanyTableAdapter1.AddCompany(??????????, txtCompanyName.Text,
[Code]....
How to auto increment the date value in vb.net?[code]...
When i click the add Button, from Date should display in the textbox, then again i click the add button the next date should display in the textbox. The date should increment upto To Date.[code]...
I wrote a small code to generate auto-increment number and save it to the database. the problems is that whrn it reaches 10, it stops incrementing
hereis the code
Dim Separ As String() = fullString.Split("-")
Dim StrPart As String = String.Format(Separ(0), "ABC", System.String.Format("SIM"))
[code].....
i am using vb.net2010 and mssql as my database. what i want to do is when i open the form, the database will auto increment the student id and show it on the text box.
View 13 RepliesHow to create a string auto Increment like this
For Example.
NTAA001
NTAA002
....
....
[code]....
im working with my thesis, to generate auto increment number. for example,when the form load for the first time it will appear transaction 1, and then next time i'll load the form it will be transaction 2, so on and so forth. i am using a VB.net and SQL server.
View 1 RepliesIs there anyway to reset a Table's a primary key to 1that is Identity Specification Yesautoincrement by 1 seed 1? We are using SQL Express, but never touch SQL directly.The problem is I have one data table where the primary key is up to 2,366,784 - this table gets added to extensively, but then deleted extensively.
View 4 RepliesI am using the following code to number the listview in vb.net.
vb.net
While myListData.Read ' using ExecuteReader Dim i As Integer For i = 0 To lvList.Items.Count - 1 lvList.Items(i).Text = CStr(CInt(i) + 1).ToString() Next i lvList.Items.Add(Trim(CStr(CInt(i) + 1).ToString)) 'col no. 1 ' adding sub items from database (mysql) ' ........End While
The output problem is as follows
Col 1
1
2
3
[code]....
There is some problem with the code. Should i try the padleft or the "D2" ?
