In my app, I connect to a table to get the next unique id (t_IDs). The code basicly looks up a specific table name and returns the next value. This is fine in testing, but the application is going to be used between multipul sites. I can see an issue where this may cause the app to slow down while it waits the next id before saving all the data to another table.
My question is, Is there away to set a SQL trigger to go and get the next id value and update the record when a new record is created? BTW - I did look at the uniqueidentifier option (NewId()) but the Id is too long. I need 1,2,3,4 etc.
currently, what i want to do is, add a column in a table "default" during runtime. Well, I've got that covered already.
The problem is, the column names are actually taken from the users input through a textbox or drop down list and of course, if the same column is added already in the table, it generates an error since it has to be unique.
That is why i wonder if it is possible to know if a column already exists without viewing the form which contains the grid view of that table?
I am using vb.net code and sql server 2005. I have textbox in my application which is linked to a sql column. Now I want to check that it should not insert any duplicate record in table. I mean everytime it insert in table the value should be unique. data is inserted in table on button click.
I am using objectdatasource for sql connectivity and FormView for dataentry.
creating unique IDs for each row in a table, to avoid duplicates when inserting the data to a server. The table looks like this:
+--------------+----------+------+-------------+ | brikkenummer | tid | post | anvendt_tid | +--------------+----------+------+-------------+ | 3086360 | 09:43:02 | 98 | 09:43:02 |
[code]....
"Brikkenummer" is the number of a device that each person carries with him/her, and "tid" is the time the runner has passed a specific post. The post he/her has passed is described in the column "post".Out of these three columns, is it possible to generate some kind of unique ID? The ID that is generated have to be the same if a row is displayed twice or more, to avoid duplicate entries.
I'm developing a policy administration system and I need to generate a unique policy in this formart
RP000000/HH
Where R is the Region i select from a Combobox, P is the product the client chooses and the auto generated six digit number and HH is the hour when the record was entered in the system. I want the auto generated number to be the ID in my ClientDetails table in my DB.Here is my code of what I have done so far.They want to be able to tell the region and the product by just looking at the policy number.
Private Function PolicyNumber(ByVal intRegion As Int16, ByVal intProductCover As Int16) As String PolicyNumber = intRegion.ToString & intProductCover.ToString & "000000" & "/" & Hour(Now).ToString End Function
I have a database, 3 or more tables and a one of them with 3 or more columns.In this table i have ID column, Name Column, Date Column etc.I like to select one record for printing and give to the person one or more Receipt of payment (bill).But every time i like the number of Receipt to be unique. For all persons in my table and all payment.
I am having major problems with creating my tables and populating them.The problem for the creating seems to lie when I try to create my table named WeeklyUnitStaffRota. I get the run time error 2147467259(80004005) No unique index found for the referenced field of the primary table. This has only started happening as I have been tinkering with my tables to get them to populate properly.I seem to have a problem when I have two columns with the same info but relating to a different college ie two MSC being run at 2 different colleges.[code]...
I am using VB .Net to access the eBay API and store all completed orders in a database. This database is then fed into a proprietary shipping system, which can not handle an order number larger than 20 characters. eBay returns an order number like so 230407279314-680141236013 which is too long. The order number is always 12 numbers a hyphen and 12 more numbers. What I need to do, is turn this (the result can be alpha numerical) into a shorter, unique order key to store in my database alongside the true orderId (so that this can be referenced by the shipping software instead of the actual order number). The reason for the 20 character limit is the barcode algorithm used. Is there any way to achieve this in VB .Net 2010? This number can be anything unique, so long as it does not exist already (even a good uniqueid function would work, but I would have to query the database to make sure it isn't taken)
How generate the unique no. 1,2,3 and so on .... on button click of each new user ..
the code mentioned below is a readwrite coding in vb.net ...
but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim FILE_NAME As String = Server.MapPath("counts.vbi")
Unique constraint - these columns currently doesn't have unique values..?? I have created Unique Constraint with 3 columns. My code works perfectly but once - two users @ same time entered same data and somehow it saved in DB; after that incident. This UniqueConstraint gives me error - These columns currently doesn't have unique values. How can I check if user enters this kind of entry or how can I restrict the Entry?
I'm trying to connect foxpro table (dbf) to VB.NET. I'm trying to display the records of that table to listview in VB.NET. Here is my code:I got an error message here, the error says "cannot open the file"
Imports System.Data.SqlClient Imports System.Data.OleDb Public Class Form3
i have installed oracle 9i on my system and i dont knw how to connect even a simple form to my sql table in which i have two fields named first_name and last_name, the name of the table in sql is user.can some1 please tell me how to connect my form1 with the my sql table so that when i type the names in two text boxes the data is stored in the database.
Well the problem is probably me not doing something right but we will se.I have a form w/ just a datagridview on it. I have set the data gridview to connect to a table. I adjust the querry to only return 1 row.So it looks like select * from table where ident=@realident..so the problem is i want to use a variable from the form to be the @realident and i want it to auto load when the form loads not have to type it into the tool bar like you have to do by default.Also once the data is returned I would like to be able to edit a field or two in that data and have it save back to the db.
how to connect a SQL Table to a DataGridView that was previously created programmatically. Basically, at run-time the user names and creates several empty SQL Tables and DataGridViews. After that the user selects from a combobox the name of the SQL Table and DataGridView that they want to import data into, then clicks a button named "Import"...after clicking "Import" the user navigates to an Excel file, chooses a worksheet, clicks a "Continue" button and then the code successfully connects to the Excel import file and SQLBulkCopies the data to the SQL Table...next I need the imported data in the SQL Table update to the DataGridView...this is the part I can't figure out.
The challenge is the datagridview isn't hard coded it was created and named programmatically at runtime. So now the user selects the name of the SQL Table the data resides in and the name of the DataGridView from the combobox "moduletableCB" and I need the code to update the datagridview.
I have a search page in my application where I am searching the database for the records that meet the specified conditions that the user selects. All of this works by creating the dataset, datatable, and dataadapter in the code. I then take a created bindingsource link it to the created datatable and then attach the bindingsource to my datagridview to display the results. Now what I am trying to do is to figure the Mean, Median, Mode and Standard Deviation of the results that were found above. My question is how to I run a select query on the code created table. I have the select query I want to use and when I try to use it in the code it talks about the connection. Now I have a dataset that is part of the project and I have the on just for the search page. Let me know if you need any code samples.
I'm new in vb I just wanted to learn vb so I have to search. I learn vb in a self study way(using youtube and other tutorial sites) . but I have this problem i want to connect my login form of vb.net 2003 to the table namely login.db in sql 2005
Sub emailConfirm() Dim email As String = txtMail.Text Dim name As String = txtPrenom.Text + txtNom.Text[code]....
note:I want to send Link contains a unique identifier and verify the unique identifier in the login.aspx.I don't know when to do this...I found nothing interesting on the net ...
I want to connect to Sage Data, to the stock table, and select certain columns such as SKU, title, description, sales price and then select the rows I want and send these to an excel spreadsheet formatted in the style required for upload as product feeds to google shopping, shopzilla, amazon and Ebay etc.Each feed is formatted differently and I have to create these manually all the time so I want to try and automate the process. We would have much better control of our ecommerce if I could do this quickly with custom program.
So far I have managed, after a lot of disappointments, to connect to the sage data through the sage ODBC and populate a datagridview. I've only got this far by luck, with many errors due to me and system and software problems. I thought this would be relatively easy as I once used an app to create a word document programmatically with a very thorough guide, it's not looking so easy now. I have also added a check box column to the datagridview for selecting rows and thats as far as I have got.I was thinking perhaps of passing the selected data to an array and then creating and populating the spreadsheet.how to get selected rows from DGV.
What is my question? Well I believe its not a really hard one for those who know Basic.
Im trying to create a LogBook for an online server. What is the purpose of it, its simple. Right now we are doing it in a forum each one posting in a Log Thread, which game server they did the activity on, date, and time spent.
I have created the program so far, and what i would like to know, is if it would be possible that in the Texboxes i have, once you click submit, you will send the info to a Databse table.
i am semester 2 in the "system information", as usual just like in semester 1, this hardcore lecturer just has some way to make us difficult he is giving us a one semester long assignment, and as you probably can see.i got mysql as my database to making a hotel system application.
1.now i am stuck with how to connect "crystal report" with mysql database table??
We have a VB.Net application which works fine in our tests in different Windows XP SP3 machines. However there is one machine in which is displaying this error:
Unable to connect to any of the specified MySQL hosts
Using the mysql command, we can successfully connect to the database. We already checked for any other application or firewall that could be blocking the connection but it seems fine. We also reinstalled the system (no errors during the installation) but the MySQL error message doesn't change.
The system settings are exactly the same as in the other computers. We are using "localhost" as server in the connection string. The "hosts" file has its default values (nothing strange in there).
