SQL Trigger To Notify VB.NET Application ?
Aug 10, 2007
Hi all,
I have a VB.NET 2005 application that needs to monitor constantly each change of a field on a SQL server 2005.
Is there a way of setting a trigger up in the SQL Server that notifies the VB.NET application to avoid having the VB.NET apllication querying the SQL table all day for changes?
The table in SQL stores a temperature value. I need the VB.NET application to receive this value everytime there's a change. I could do a timer on the VB.NET application to check for changes in the table every 1 second but I don't think this is efficient. The temperature value may change once every two or three seconds.
The VB.NET application will process the temperature value.
Is there a way of notifying the VB.NET application (which runs from a different server) from within SQL Server? If so, how? If not, what would you go about implementing this?
Thanks again for your comments,
ST
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Sep 17, 2014
When my SQL Agent job completes successfully, I'd like to send a notification to QlikView. The idea is to stop QlikView having to constantly check if the job has been run, and just get notified when it needs to update its data.
I don't know how to start. Can the job notifications push a success message to QlikView? I don't think I want to send an email, but something that indicates to QlikView to update the tables.
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Oct 13, 2006
I have a requirement to create a sorted list of objects, stored withinan assembly, and I would like to use a After Insert/Update trigger tonotify that assembly that something has changed, rather than pollingthe database for changes all the time.My initial problem is that I need to create a static list so that itcan be dynamically looked at by other assemblies, but SQL Server won'tallow me to attach a dll which contains a static method.Has anyone done something like this? Are there any decent examplesavailable anywhere?any help will be appreciated.simo
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Aug 27, 2007
Hi,
I am developing desktop application with SQL Server 2005 in C#. I need your help. My Question is "How to notify a Database trigger is executed thru C# application?".
Now I am going to explain clearly. I have a table "Employee" and I created one trigger (it may be INSERT/UPDATE/DELETE) for that table. Then I created a C# application to show a msg box when that table is modified. Now my question is If that table is modified a message box will be shown. I know about trigger (If trigger assigned table is modified that trigger will automatically executed.) But how do i know that trigger is executed thru a C# application. Please send your suggestion or links.
Thanx,
GANESAN MURUGESAN.
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Jun 17, 2005
I am newbie to DTS stuff. Is there anyway I can trigger DTS package thr' asp.net applicationPlease help
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Apr 30, 2008
Is it possible to get a variable( for example user id of the currently logged in user) in a CLR SQL Server trigger.
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Apr 30, 2001
I have a trigger on a table which when I do a direct update to throught QA seems to work fine. When a user developed application updates the record it locks their screen and record. I can't see where it could be causing it, but I am pasting it below. Any thoughts/comments greatly appreciated
CREATE TRIGGER tr_Patient_Updt2
ON patient_
FOR UPDATE
AS
if update(df_last_cholestero)
begin
declare @tstyears int
declare @tdate datetime
declare @sdate datetime
declare @bdate datetime
declare @ptage int
declare @actid varchar(12)
select @bdate = convert(datetime,df_last_cholestero,101), @actid = account_id
from inserted
select @ptage = dbo.GetAge(convert(datetime,patient.Date_Of_Birth, 101), GETDATE())
from patient where patient.account_id = @actid
select @sdate = convert(datetime,patient.Date_Of_Birth,101)
from patient where patient.account_id = @actid
select @tstyears = datediff(month,@bdate,getdate())
if @ptage between 18 and 65
begin transaction
begin
if @tstyears < 12
begin
set @ptage = @ptage + 5
set @sdate = DATEADD(year, @ptage, @sdate)
update patient_
set df_next_cholestero = convert(char(08),@sdate,112)
where patient_.account_id = @actid
end
else if @tstyears >= 12 and @tstyears < 24
begin
set @ptage = @ptage + 4
set @sdate = DATEADD(year, @ptage, @sdate)
update patient_
set df_next_cholestero = convert(char(08),@sdate,112)
where patient_.account_id = @actid
end
else if @tstyears >= 24 and @tstyears < 36
begin
set @ptage = @ptage + 3
set @sdate = DATEADD(year, @ptage, @sdate)
update patient_
set df_next_cholestero = convert(char(08),@sdate,112)
where patient_.account_id = @actid
end
else if @tstyears >= 36 and @tstyears < 48
begin
set @ptage = @ptage + 2
set @sdate = DATEADD(year, @ptage, @sdate)
update patient_
set df_next_cholestero = convert(char(08),@sdate,112)
where patient_.account_id = @actid
end
if @tstyears > 48
begin
set @ptage = @ptage + 1
set @sdate = DATEADD(year, @ptage, @sdate)
update patient_
set df_next_cholestero = convert(char(08),@sdate,112)
where patient_.account_id = @actid
end
end
end
commit transaction
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Apr 22, 2007
Hi Everyone, I m using ASP.NET 2005 with C# and SQL SERVER 2005. I m using stored procedure and sql datasource control to retrieve the data. I want to use the trigger alongwith storedprocedure. I have created the following trigger on emp_table. CREATE TRIGGER Employeee on emp_tableAFTER DELETE ASDECLARE @empid int SELECT @empid=empid from emp_table where locationid=(SELECT locationid from deleted)IF @@ROWCOUNT=0 DELETE FROM location_table where locationid=(SELECT locationid from deleted)What i wanted to know is how can i use it with asp.net and sql server 2005 when any update,delete or insert query is executed thru the stoed procedure...What code is required to use the trigger with the application of .NET thanxs.....
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Oct 28, 2015
issues with triggers in Sql Server 2014.
A few weeks ago I've done a SQL Server migration from SQL Server 2000 to SQL Server 2014.It was a bit tricky but anything worked fine.
I have some legacy VB6 (Visual Basic 6) applications written in house which worked with Databases on the old SQL server 2000.Surprisingly, these applications worked well after the upgrade to SQL Server 2014 without having to change a piece of code.
Now, some users tell me that they receive some unusual message when saving data from these legacy applications.After investing for a few hours, I discovered that triggers are not executed when those users try to save data from grids or forms in their applications.Trying to reproduce the INSERT statement in SQL Server Management Studio, the triggers run well.From the application, they don't.
These applications connect to Database Server thru OLEDB connection with the following ADO connection string :
Provider=SQLOLEDB.1;Password={password};User ID={user};Initial Catalog={db};Data Source={datasource}.the {user} is a true SQL account who have read/write/delete access in the databases.
On the web there is a lot of questions involving the same issue, but only from SSIS.I found some articles about an OLEDB connection parameter named FastLoadOptions with a value of FIRE_TRIGGERS, but nowhere how to put it in the ADO OLEDB connection string.
how to reactivate the "normal" use of triggers from an ADO OLEDB connection ?Either with some obscur parameter in the connection string or options somewhere in the SQL Server 2014.
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Dec 2, 2006
Hello,
I have a problem with the notification. I have enabled Database mail and i have created an Operator.
Under SQL Server AgentJobs and then in the job properties i have enabled notification but i don`t receive a mail. Test e-mail works fine but "real" e-mail not.
I have also tried with the Database Maintenance Wizard but even then it just not work.
I have noticed that others have experienced the same problem but i have seen no solution yet.
Could you please help me? What can cause this problem? What`s the best i can do to start searching for the solution? Thanks!
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Jun 6, 2001
Currently, I have set up a SQL 7.0 database backup job and have one person notified if the job succeeds, but HOW do I choose an option to notify a different person if the job fails ?
Thank you in advance
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Sep 25, 2001
I can not get SQLServerAgent to Send Mail. Help!
SQLMail started successfully.
In the server agent properties I use the Test button and I receive the
response.
"Successfully started(and stopped) a mail session with this profile."
Indicating that mail should work.
If I send a email notification from a scheduled job it gives me the error:
NOTE: Failed to notify 'operations' via email
In the SQL Server Agent Error log I get.
"[264] An attempt was made to send an email when no email session has been
established"
xp_sendmail works fine.
Any ideas would be greatly appreciated.
TIA...
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Aug 14, 2000
Hi Guys,
Is there a way to notify DBA when a new stored procedure,table,view is created by any user...
Help is greatly appericated..
Jessi..
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Oct 18, 2007
I have two question
1.In SSIS is there a way to unzip the text files
I have set an automated process in sql server agent
I receive ziped text files.I want to unzip the files before loading the data
2.Is there a way to notify when an error occurs in the package in sql server agent.
Please let me know
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Mar 23, 2008
hi,
there is any way to a bd notify the user by creat a file or send a e-mail or even connect to a ip and send a message when any record is changed ( update/insert/delete)
i have seen a event called triger but i don´t know if is that what i want and i think this event can´t do what i need.
any one can help me?
thanks a lot
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May 25, 2001
I'm running sqlserver 2000 EE on windows nt 4.0 server. We are using
Microsoft outlook express. I would like to setup our sqlserver to
notify me via e-mail when a job finishes.
1) What value should I have for mail profile. Under
sql server age properties.
Please let me know.
Thanks,
Ranjan
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Jan 5, 2004
I have job in SQL Server 2000 that is setup to notify an email operator upon successful completion.
When I test the notification to the set email operator it sends the email just fine.
When the job is run manually it emails the operator just fine.
When the job is run on a schedule it does not email the operator upon completion. It gives the details in view job history "NOTE: Failed to notify '<operator>' via email.
I have other jobs on the same server that run and notify via email to other operators upon successful completion just fine.
I have parsed MS Technet and the web and did not find anything.
Any help is greatly appreciated.
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Nov 19, 2007
Hi,
can the Notify Operator Task send the output error message of its predecessor task(e.g Execute T-SQL Statement Task) to the operator? If yes, how?
Thanks,
Greg
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Nov 6, 2007
Simple question:
I have two servers S1 and S2. Inmediately after new data on S1 is available I want to perform some actions on S2.
I can use a trigger on S1, but if S2 is down the transaction on S1 will be lost. I could use database replication but I only need one single table in S1 to report changes to S2
Is there any other approach I could use?
Thanks.
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Sep 18, 2007
How do I get the option my database mail profile to appear in the drop down list on the "Notifications Page" in my job properties?
I have configured the mail profile and sucessfully sent a test E-mail.
I have also set "Enable mail profile" in the SQL Agent Properties and restarted the agent.
What else do I need to do, help please?
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Oct 8, 2007
I am havig trouble getting database mail to work. I setup IIS on the same box as sql. I setup SMTP with the relay to 127.0.0.0. In sql server, I setup database mail to point to localhost, with no authentication. After the setup, when I test the email (RMB Send test message) it works fine.
I created a job that will fail every time. I setup myself as the notify party on the job. When I run the job, it fails. I get no email. The job log has the following error:
Message
The job failed. The Job was invoked by User xxxxAdministrator. The last step to run was step 1 (test 1). NOTE: Failed to notify 'Dan Jones' via email.
I have spent lots of hours trying to make this simple thing work. What is wrong?
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Mar 12, 2007
I had created a trigger which sees that whether a database is updated if it is its copy the values of the updated row into another control table now I want to read the content of control_table into BIzTalk and after reading I want to delete it.Can any one suggest the suitable ay to do this?
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Jun 25, 2002
Does anyone know how to send a notification, using SQL Agent Alert,
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thanks!
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Jun 12, 2015
I'm trying to set the query to send email ONLY when it returns records of blocks and i cant seem to get this going.
declare @blocks varchar(max)
set @blocks = (SELECT spid,
sp.[status],
loginame [Login],
hostname,
blocked BlkBy,
sd.name DBName,
[Code] ....
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May 25, 2010
I've been working with Database Mail for some time but I haven't seen this one before. I have a maintenance plan that does the following:
1. Check database integrity
On Success:
2. Perform backups
On Success:
3. Perform a maintenance cleanup
On Success:
4. Notify operator of success
Steps 1 - 3 are also linked (via On Failure arrows) to a singular Notify Operator of Failure task.
The maintenance plan does exactly what I want it to, and if everything goes correctly, it successfully sends an email to an operator.
If steps 1 - 3 fail, the job ends in an error state, but does not trigger the Notify Operator of Failure task.
I was able to recreate the problem by creating another maintenance plan on the same instance with the same steps. Its "Notify Operator" on failure task also doesn't work.
It occurs to me that maybe I'm missing something, so here's some of the details of my SQL server:
SQL 2008 + SP1 (10.0.2531) x64 on Windows 2008 R2
DB Mail profile is public and default
I do have a slightly unusual profile, in that it uses two accounts:
1. A connection to a SharePoint SMTP service (where it catches emails directed at document libraries)
2. A connection to a UNIX-based smtp server (which routes mail to regular mailboxes and my SQL DBA mailing list)
The Profile will attempt to send to the SharePoint server first. The SharePoint server does not relay. If the document library email address doesn't exist, SQL will raise a warning (in the Database Mail log) and the profile will use the second account on the list, which is a real mail server and can relay the message to any mailbox.
It works really well, actually. When the maintenance plan completes successfully, the message is sent to the drop folder on the SharePoint server, and SharePoint routes the email to the correct library, and we have a central archive of all DB Mail notifications.
But if the job fails (for example, if the backup disk is out of space), none of this happens. According to the log, the job doesn't even try to send a notification. Looking at the DBMail log, the Mail service does not start. No email is delivered to the drop folder of the receiving SMTP server. So I don't think my Database Mail configuration is the problem here. It is apparently something to do with the way the job itself handles errors.
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Aug 14, 2015
I have configured an alert like below to track all blocked events in SQL Server across all databases and then kick start a sql job when a blocking happens which inserts data to a table, when there is a blocking in SQL server , i get an email  --which is working fine and i am able to track all queries.
but, HOW to get notifications ONLY if BLOCKING IS HAPPENING FOR MORE THAN 30 SECONDS OR 1 MINUTE with out using sp_configure?
---ALERT
USE [msdb]
GO
EXEC msdb.dbo.sp_update_alert @name=N'Blocking Process',Â
@message_id=0,Â
@severity=0,Â
@enabled=1,Â
[Code] .....
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Apr 13, 2008
have SQL Server 2005 std edition SP1 installed on Windows 2003 Std edition .Configured Transactional (single Publisher and no clustered environment.)
Replication past two months working fine, Now
1.Distrib.exe application err is coming.
Due to which my job is failing (Distributor to Subscriber).
Iam attaching thw file.
Thanks
Sandeep
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Feb 2, 2007
I've set up DB mail and sent a test e-mail and that comes through fine.
I set up an Operator with email Name: DWhelpton@k-and-s.com;MWeaver@k-and-s.com
I created a job and set up the notifications to e-mail the operator on failure.
When the job runs and fails, I do not get an e-mail and I get the following exception in the db mail log:
Date 2/2/2007 8:35:00 AM
Log Database Mail (Database Mail Log)
Log ID 402
Process ID 3936
Last Modified 2/2/2007 8:35:00 AM
Last Modified By NT AUTHORITYSYSTEM
Message
1) Exception Information
===================
Exception Type: Microsoft.SqlServer.Management.SqlIMail.Server.Common.BaseException
Message: Could not retrieve item from the queue.
Data: System.Collections.ListDictionaryInternal
TargetSite: Microsoft.SqlServer.Management.SqlIMail.Server.Controller.ICommand CreateSendMailCommand(Microsoft.SqlServer.Management.SqlIMail.Server.DataAccess.DBSession)
HelpLink: NULL
Source: DatabaseMailEngine
StackTrace Information
===================
at Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandFactory.CreateSendMailCommand(DBSession dbSession)
at Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandFactory.CreateCommand(DBSession dbSession)
at Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandRunner.Run(DBSession db)
at Microsoft.SqlServer.Management.SqlIMail.IMailProcess.ThreadCallBack.MailOperation(Object o)
What step am I missing?
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Nov 14, 2006
Hey,
I'm new to this whole SQL Server 2005 thing as well as database design and I've read up on various ways I can integrate business constraints into my database. I'm not sure which way applies to me, but I could use a helping hand in the right direction.
A quick explanation of the various tables I'm dealing with:
WBS - the Work Breakdown Structure, for example: A - Widget 1, AA - Widget 1 Subsystem 1, and etc.
Impacts - the Risk or Opportunity impacts for the weights of a part/assembly. (See Assemblies have Impacts below)
Allocations - the review of the product in question, say Widget 1, in terms of various weight totals, including all parts. Example - September allocation, Initial Demo allocation, etc. Mostly used for weight history and trending
Parts - There are hundreds of Parts which will eventually lead to thousands. Each part has a WBS element. [Seems redundant, but parts are managed in-house, and WBS elements are cross-company and issued by the Government]
Parts have Allocations - For weight history and trending (see Allocations). Example, Nut 17 can have a September 1st allocation, a September 5th allocation, etc.
Assemblies - Parts are assemblies by themselves and can belong to multiple assemblies. Now, there can be multiple parts on a product, say, an unmanned ground vehicle (UGV), and so those parts can belong to a higher "assembly" [For example, there can be 3 Nut 17's (lower assembly) on Widget 1 Subsystem 2 (higher assembly) and 4 more on Widget 1 Subsystem 5, etc.]. What I'm concerned about is ensuring that the weight roll-ups are accurate for all of the assemblies.
Assemblies have Impacts - There is a risk and opportunity impact setup modeled into this design to allow for a risk or opportunity to be marked on a per-assembly level. That's all this table represents.
A part is allocated a weight and then assigned to an assembly. The Assemblies table holds this hierarchical information - the lower assembly and the higher one, both of which are Parts entries in the [Parts have Allocations] table.
Therefore, to ensure proper weight roll ups in the [Parts have Allocations] table on a per part-basis, I would like to check for any inserts, updates, deletes on both the [Parts have Allocations] table as well as the [Assemblies] table and then re-calculate the weight roll up for every assembly. Now, I'm not sure if this is a huge performance hog, but I do need to keep all the information as up-to-date and as accurate as possible. As such, I'm not sure which method is even correct, although it seems an AFTER DML trigger is in order (from what I've gathered thus far). Keep in mind, this trigger needs to go through and check every WBS or Part and then go through and check all of it's associated assemblies and then ensure the weights are correct by re-summing the weights listed.
If you need the design or create script (table layout), please let me know.
Thanks.
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Jul 20, 2005
Are there any limitations or gotchas to updating the same table whichfired a trigger from within the trigger?Some example code below. Hmmm.... This example seems to be workingfine so it must be something with my specific schema/code. We'reworking on running a SQL trace but if anybody has any input, fireaway.Thanks!create table x(Id int,Account varchar(25),Info int)GOinsert into x values ( 1, 'Smith', 15);insert into x values ( 2, 'SmithX', 25);/* Update trigger tu_x for table x */create trigger tu_xon xfor updateasbegindeclare @TriggerRowCount intset @TriggerRowCount = @@ROWCOUNTif ( @TriggerRowCount = 0 )returnif ( @TriggerRowCount > 1 )beginraiserror( 'tu_x: @@ROWCOUNT[%d] Trigger does not handle @@ROWCOUNT[color=blue]> 1 !', 17, 127, @TriggerRowCount) with seterror, nowait[/color]returnendupdate xsetAccount = left( i.Account, 24) + 'X',Info = i.Infofrom deleted, inserted iwhere x.Account = left( deleted.Account, 24) + 'X'endupdate x set Account = 'Blair', Info = 999 where Account = 'Smith'
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Dec 5, 2006
This Audit Trigger is Generic (i.e. non-"Table Specific") attach it to any tabel and it should work. Be sure and create the 'Audit' table first though.
The following code write audit entries to a Table called
'Audit'
with columns
'ActionType' //varchar
'TableName' //varchar
'PK' //varchar
'FieldName' //varchar
'OldValue' //varchar
'NewValue' //varchar
'ChangeDateTime' //datetime
'ChangeBy' //varchar
using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.SqlServer.Server;
public partial class Triggers
{
//A Generic Trigger for Insert, Update and Delete Actions on any Table
[Microsoft.SqlServer.Server.SqlTrigger(Name = "AuditTrigger", Event = "FOR INSERT, UPDATE, DELETE")]
public static void AuditTrigger()
{
SqlTriggerContext tcontext = SqlContext.TriggerContext; //Trigger Context
string TName; //Where we store the Altered Table's Name
string User; //Where we will store the Database Username
DataRow iRow; //DataRow to hold the inserted values
DataRow dRow; //DataRow to how the deleted/overwritten values
DataRow aRow; //Audit DataRow to build our Audit entry with
string PKString; //Will temporarily store the Primary Key Column Names and Values here
using (SqlConnection conn = new SqlConnection("context connection=true"))//Our Connection
{
conn.Open();//Open the Connection
//Build the AuditAdapter and Mathcing Table
SqlDataAdapter AuditAdapter = new SqlDataAdapter("SELECT * FROM Audit WHERE 1=0", conn);
DataTable AuditTable = new DataTable();
AuditAdapter.FillSchema(AuditTable, SchemaType.Source);
SqlCommandBuilder AuditCommandBuilder = new SqlCommandBuilder(AuditAdapter);//Populates the Insert command for us
//Get the inserted values
SqlDataAdapter Loader = new SqlDataAdapter("SELECT * from INSERTED", conn);
DataTable inserted = new DataTable();
Loader.Fill(inserted);
//Get the deleted and/or overwritten values
Loader.SelectCommand.CommandText = "SELECT * from DELETED";
DataTable deleted = new DataTable();
Loader.Fill(deleted);
//Retrieve the Name of the Table that currently has a lock from the executing command(i.e. the one that caused this trigger to fire)
SqlCommand cmd = new SqlCommand("SELECT object_name(resource_associated_entity_id) FROM
ys.dm_tran_locks WHERE request_session_id = @@spid and resource_type = 'OBJECT'", conn);
TName = cmd.ExecuteScalar().ToString();
//Retrieve the UserName of the current Database User
SqlCommand curUserCommand = new SqlCommand("SELECT system_user", conn);
User = curUserCommand.ExecuteScalar().ToString();
//Adapted the following command from a T-SQL audit trigger by Nigel Rivett
//http://www.nigelrivett.net/AuditTrailTrigger.html
SqlDataAdapter PKTableAdapter = new SqlDataAdapter(@"SELECT c.COLUMN_NAME
from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk ,
INFORMATION_SCHEMA.KEY_COLUMN_USAGE c
where pk.TABLE_NAME = '" + TName + @"'
and CONSTRAINT_TYPE = 'PRIMARY KEY'
and c.TABLE_NAME = pk.TABLE_NAME
and c.CONSTRAINT_NAME = pk.CONSTRAINT_NAME", conn);
DataTable PKTable = new DataTable();
PKTableAdapter.Fill(PKTable);
switch (tcontext.TriggerAction)//Switch on the Action occuring on the Table
{
case TriggerAction.Update:
iRow = inserted.Rows[0];//Get the inserted values in row form
dRow = deleted.Rows[0];//Get the overwritten values in row form
PKString = PKStringBuilder(PKTable, iRow);//the the Primary Keys and There values as a string
foreach (DataColumn column in inserted.Columns)//Walk through all possible Table Columns
{
if (!iRow[column.Ordinal].Equals(dRow[column.Ordinal]))//If value changed
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "U";//U for Update
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the entry
}
}
break;
case TriggerAction.Insert:
iRow = inserted.Rows[0];
PKString = PKStringBuilder(PKTable, iRow);
foreach (DataColumn column in inserted.Columns)
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "I";//I for Insert
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = null;
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
case TriggerAction.Delete:
dRow = deleted.Rows[0];
PKString = PKStringBuilder(PKTable, dRow);
foreach (DataColumn column in inserted.Columns)
{
//Build and Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "D";//D for Delete
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = null;
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
default:
//Do Nothing
break;
}
AuditAdapter.Update(AuditTable);//Write all Audit Entries back to AuditTable
conn.Close(); //Close the Connection
}
}
//Helper function that takes a Table of the Primary Key Column Names and the modified rows Values
//and builds a string of the form "<PKColumn1Name=Value1>,PKColumn2Name=Value2>,......"
public static string PKStringBuilder(DataTable primaryKeysTable, DataRow valuesDataRow)
{
string temp = String.Empty;
foreach (DataRow kColumn in primaryKeysTable.Rows)//for all Primary Keys of the Table that is being changed
{
temp = String.Concat(temp, String.Concat("<", kColumn[0].ToString(), "=", valuesDataRow[kColumn[0].ToString)].ToString(), ">,"));
}
return temp;
}
}
The trick was getting the Table Name and the Primary Key Columns.
I hope this code is found useful.
Comments and Suggestion will be much appreciated.
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Oct 30, 2007
Table 1
First_Name
Middle_Name
Surname
John
Ian
Lennon
Mike
Buffalo
Tyson
Tom
Finney
Jones
Table 2
ID
F
M
S
DOB
1
Athony
Harold
Wilson
24/4/67
2
Margaret
Betty
Thathcer
1/1/1808
3
John
Ian
Lennon
2/2/1979
4
Mike
Buffalo
Tyson
3/4/04
5
Tom
Finney
Jones
1/1/2000
I want to be able to create a trigger that updates table 2 when a row is inserted into table 1. However I€™m not sure how to increment the ID in table 2 or to update only the row that has been inserted.
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Feb 5, 2008
A
ID
Name
1
Joe
2
Fred
3
Ian
4
Bill
B
ID
1
4
I want to be able to create a trigger so that when a row is inserted into table A by a specific user then the ID will appear in table B. Is it possible to find out the login id of the user inserting a row?
I believe the trigger should look something like this:
create trigger test_trigger
on a
for insert
as
insert into b(ID)
select i.id
from inserted i
where
--specific USER
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