Determining A SQL Server Identity Column Name?
Jul 22, 2009
I'm trying to write some generic code in VB.NET that determines whether or not a SQL server database table contains an identity column and, if so, to return the name of that column.I'm working in Visual Basic 2008 Express and have created a SQL database, "MyDatabase" with 1 table called "MyTable". Within that table, I've got 3 columns, "ID", "Column1" and "Column2". I know, I know... inventive names. Under column properties in the Database Explorer, I've set the "ID" column "Identity Specification" to "yes" and have set the "Is Identity" value to "yes"
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Jun 27, 2009
I have 2 tables that are related,both have identity columns for primary keys and i am using a vb form to insert data into them,My problem is that i cannot get the child table to get the primary key of the parent table and use this as its foreign key in my database.the data is inserted fine though no foreign key constraint is made.I am wondering if a trigger will do it and if so how. All my inserting of data is done in vb.The user wont insert any keys. all these are identity columns that are auto generated. If a trigger is my way out please illustrate with an example.
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Aug 16, 2009
I am trying to learn how to program using LINQ to SQL so I downloaded a Tutorial Paper on datacontext and other subjects but cannot get very many of the examples to build with out errors as written in the Tutorial. The code that I am trying to run is as follows.[code]...
Even though I had to make some additions to solve undeclared variables it run up to the db.SubmitChanges() statement which give me an error message declaring the following "Cannot insert Explicit value for Identity column in table orders when IDENTITY_INSERT is set to off. I used SQL Server Management studio to attach the database and ran a query to turn the IDENTITY_INSERT to on but when I detach and try to run my code against the database I keep Getting the same error. I can look at the ord variable and see that the OrdersID Var is set to nothing. I tried to give it a number 1 higher then what was in the database but it still didnt work. I have looked all over the internet and found much information using scripts and querys in SQL management studio to turn IDENTITY_INSERT on and off but none to do it from visual basic SQL to LINQ code.
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Jul 15, 2011
I don't understand this code (listed below). this code attempts to modify the products table . It creates an update, delete and insert command. I don't understand where it gets the data values from. What I mean is that, how does it know which record to delete. there in no input box or textbox from where it can get the product ID, which would identify which record to delete.[code]...
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May 15, 2011
How Can I determine if my data table column is varchar or nvarchar?
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Sep 21, 2009
I am using VB.net (FormView and ObjectDataSource) and Sql Server 2005.
I want to get last inserted @@identity in table on FormView1_ItemInserted
Protected Sub FormView1_ItemInserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewInsertedEventArgs) Handles FormView1.ItemInserted
End Sub My issue is that I want to redirect my FormView to readonly mode after FormView1_ItemInserted but for that I need to show the inserted record in readonly mode and that is only possible if I get my last inserted @@identity.
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Oct 18, 2011
I have a piece of code what should be executed just once, when the user will use for the first time the application. I have next code, in form1_Load[code]...
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Nov 2, 2009
i have two tables Orders , Debts
CREATE TABLE [dbo].[Orders](
[OrderId] [bigint] IDENTITY(1,1) NOT NULL,
[GoodId] [int] NOT NULL,
[CustomerId] [bigint] NOT NULL,
[code]....
as you see the column of OrederId is IDENTITY i try to insert record in this table and when this record holding particular data i want to make a copy of it in Debts table?
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Apr 28, 2012
i mean, if i have an update button for inserting images and i have got another navigator which adds information to the database, how could i delete a selected row in sql server database...In dataset, i used to remove a specific row in database by doing:
me.customersbindingsource.removecurrent()
So, this one doesn't delete anything when the image is included.
1.
[code]....
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Apr 21, 2012
How to save a PDF file in a SQL Server column using vb.net code,by memory stream ?
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Jan 11, 2012
there any workaround with this one?
SELECT invoices.no, customers.name, invoices.mdcode,
SUM(iproducts.unitprice * iproducts.quantity) AS total,
SUM(iproducts.unitprice * iproducts.quantity) - SUM(rinvoices.payment + rinvoices.discount)
[code].....
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Oct 18, 2011
I have a piece of code what should be executed just once, when the user will use for the first time the application.I have next code, in form1_Load:
IfMy.Application.Deployment.IsFirstRun Then 'some code EndIf
The problem is that when I try to debug it, I meet this error: The Application identity is not set...Who can I solve it?
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Oct 5, 2011
I'm getting an exception every time I try to use my application, and I have scoured the internet looking for answers and not found a thing. So here goes.My application has a listbox with a data templete, and there is an ImageBox in the template that I fill with the avatar of a user who tweets. However, only on certain pictures I get an "Application Identity is Not Set" error, causing a "Value does not fall within expected range". This is the code I am using to set the image source:
[Code]...
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Aug 30, 2011
When I try to debug my application (of which it will not be click once)I get a Application identity is not set exception.[code]
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Sep 23, 2009
Would I be right in saying that when using tableadapters that you can't get the identity value back from the tableadapter when you insert a row intot a datatable then save the table back to database using tableadapter.update(datatable).It will only return the value of 1?
I would like to return the identity from the table but didn't want to have to assign all the parameters manually in code cause theres about 30
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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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Feb 26, 2012
I'm trying to retrieve the @@IDENTITY value from an access database after I add a row to it. However, instead of using hard coded connections, I'm using the DataSet wizard. Unfortunately, due to the Jet engine, I can't do more than one command at a time. I tried to select the @@IDENTITY in a separate command but unfortunately, I guess it counts as a different command as it returns a 0 each time.My question is, is there a way I can use the GUI/IDE to retrieve the @@IDENTITY or do I have hard code the connection, command, query values and obtain the value that way.
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Dec 26, 2008
how to work with XML.I need to create an multilingual application and need to save the controls captions in sql table with xml data typei started the following:[code]I know this is not very professional but thats all i did until know in SQLNow i have a problem in VB.NET i don't know how to read an xml data type (How to get the value from variables).If somebody can give me an exmaple how to read the xml than i would continue translating for each objects in the form where name is like the variable "btnLogin" and give it the controls.text property to the variables value.
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Jun 10, 2011
I have a property active to indicate status of an employee. Along with all the details, i extract the details from an employee table into a dataset, but however i am not able to get the value present in active as i get an invalid cast exception.
This is the property declaration.
CODE:
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May 9, 2011
Reading bit type sql server db column from dataset
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Apr 25, 2012
Have to say that, i managed to create a code which inserts image into the sql server atabase from vb.net program and its working but doesn't meet my requirments:1. when i run the application, select the image file location, it just saves directly to the db. in this case, i would like to import the image in a picture box control prior saving it in the database.2. whilst i have a navigator toolbar which has things like save button and add new infor buttons, i want to leave other details for that tool bar then the imagebutton should only do one task..thats storing image in database.hers the code i wanna share with you:
Private Sub Imagebutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles imagebutton.Click
[code].....
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Jan 18, 2010
I am using sqlserver2005.Table1 has a column named bill_no and its type is textNow I want to change its type "Numeric"When I do this the it displays this error message
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Jul 19, 2010
Is there a way to decrypt the identity impersonate that Microsoft has encrypted?
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Mar 20, 2012
Dim insert_coupon_query As String = ("INSERT INTO qa_discountcoupons (id, status_code)
[Code]...
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May 6, 2011
I have this database with a table which has the the following but I have no way to decypher it
DATA, TYPE, FILE TYPE, SIZE, DOC TYPE
0x15234324 , Word.Document.8 ,DOC, 19968, WORD.DOCUMENT.8
The field seems to contain a word document stored in a SQL Server IMAGE column
Has anyone come across this before or a way to extract this data in a readable format?
So far I have tried using PHP to extract the file and write it to a word document but not had much luck.
UPDATE: I now have Visual Studio Express and would like a way to extract this data and save to a word document
UPDATE2: This is what I have in VB sofar
Imports System.Data.SqlClient
Imports System.IO
Public Class Form1
[Code]....
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Apr 26, 2010
In VB 2008, I use a combobox on a form, and I want to fill it with data coming from a column of an SQL Server table
The Table is PLG_Rank, Columns are "ID_Rank, Rank_Name, Rank_Code"
I want to fill the combo with PLG_Rank.Rank_Name
After that, on a selection in the combobox, I want to use the PLG_Rang.ID_Rank for a request on the SQL_Server
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Oct 26, 2011
I have a datatable that is queried from SQL Server database, and it has a numeric column and I want to format it to "###,##0" format for readability reason. I tried:[code].....
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Mar 22, 2012
I want to know how to create an image column in a SQL Server table and retrieve it in ASP.NET using VB.NET create table Tbl(ID int primary key,Name varchar(20),Image ....)
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Mar 1, 2011
So I'm making a asp.net login. I want the login name that people use to match an id in my SQL database. So that I can retrieve their information. But currently when I use the code below, from which I get the name of the computer I am currently on. However I would like the user Identity to be what they write in the username textbox at the login screen.
[Code]...
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Mar 26, 2009
All,I seem to have stumbled upon a ClickOnce error that stops me from auto-updating. When I Deploy my program using ClickOnce it publishes to the specified location and installs just fine. I can run my program no problem if I activate it from the start menu. However, I have code that registers the program as the default to open a specific file type. Naturally, I want my user to be able to double click on the file type of my choice and have my program open like normal. All-in-All this works.
The problem arises because I need my program to check for updates before loading my program, much like it does when I open the program from the start menu (I set the auto-update check within the ClickOnce options). However, this check does NOT run when the user double-clicks a file type to run my program, it merely skips this step and opens the program. So first I tried to find a way to run the Update manually through code, what I cam up with was this: [Code]
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