473,840 Members | 1,447 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Are SqlHelper static methods in Microsoft.Appli cationBlocks.Da ta not thread saft?

Dear all,
I am using Microsoft.Appli cationBlocks.Da ta, for one thing I am not quite sure.
Is the following static SqlHelper ExecuteReader method from source codes not thread saft in
multithread environment?
Do we need to use lock or monitor to protect our data in the static method
in multithread environment?
Do the following codes have the reentry problem in multithread environment because
I have threads that use SqlHelper to get data from MSSQL?

public static SqlDataReader ExecuteReader(S qlConnection connection,
SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[]
commandParamete rs, SqlConnectionOw nership connectionOwner ship)
{
if( connection == null ) throw new ArgumentNullExc eption( "connection " );
bool mustCloseConnec tion = false;
// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand( cmd, connection, transaction, commandType, commandText, commandParamete rs,
out mustCloseConnec tion );
// Create a reader
SqlDataReader dataReader;
// Call ExecuteReader with the appropriate CommandBehavior
if (connectionOwne rship == SqlConnectionOw nership.Externa l)
{
dataReader = cmd.ExecuteRead er();
}
else
{
dataReader = cmd.ExecuteRead er(CommandBehav ior.CloseConnec tion);
}
// Detach the SqlParameters from the command object, so they can be used again.
// HACK: There is a problem here, the output parameter values are fletched
// when the reader is closed, so if the parameters are detached from the command
// then the SqlReader canæ„’ set its values.
// When this happen, the parameters canæ„’ be used again in other command.
bool canClear = true;
foreach(SqlPara meter commandParamete r in cmd.Parameters)
{
if (commandParamet er.Direction != ParameterDirect ion.Input)
canClear = false;
}

if (canClear)
{
cmd.Parameters. Clear();
}
return dataReader;
}
catch
{
if( mustCloseConnec tion )
connection.Clos e();
throw;
}
}
Thanks..

Nov 16 '05 #1
0 1653

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

0
395
by: Karuppasamy | last post by:
H I am trying to use the Logging Module provided by Microsoft Application Blocks for .Net I installed everything as per the Instructions given in the 'Development Using the Logging Block' But when i am trying to run the sample, i am getting the following error in the Event Viwer Kindly help me on this
9
4164
by: Clint | last post by:
Hey all - Excuse the cross-post ... I'm not sure what the appropriate newsgroup would be for this question. I have a question that I'm not quite sure how to ask. For all I know, I have the verbaige completely wrong, but here goes nothing ... I'm currently using the MS Data Access Block for a desktop application I'm writing. Recently, I had to add a call to a web service, which in
18
3332
by: Frank Rizzo | last post by:
Hello, I have a class with all static methods that is called by multiple threads. I was wondering what effect that has on the competing threads. Does Thread2 have to wait until Thread1 is done with the StaticClass.Method1 before it can use it? What if I removed static methods and made all the threads instantiate its own copy of the class? Would that remove the waiting contention?
1
1647
by: Ryan Liu | last post by:
Hashtable.GetEnumerator is not thread safe, but what about I write I loop go though Hashtable.Values, is that thread saft? Thanks a lot!
0
1655
by: Rajesh Kumar | last post by:
Hi Gregory Thanks for your answer. I did not see any attached file so I copied your text into a text file and named it compiler.bat Checked the wrapped lines and runned the file. It said Dataset, Datareader and some other things are not defined. So I entered the : Imports Microsoft.ApplicationBlocks.Data Imports system Imports system.data Imports System.Data.SqlClient
0
3371
by: Rajesh Madhra | last post by:
Hi Gregory Thanks for your answer. I did not see any attached file so I copied your text into a text file and named it compiler.bat Checked the wrapped lines and runned the file. It said Dataset, Datareader and some other things are not defined. So I entered the : Imports Microsoft.ApplicationBlocks.Data Imports system Imports system.data Imports System.Data.SqlClient
0
1054
by: Aamir79 | last post by:
Hi all, I'm using Microsoft Applications cache block in my web application. It worked fine for sometime then suddenly it is raising the following error: Message: "Can't validate the current data item. Maybe it was altered." Source: "Microsoft.ApplicationBlocks.Cache" StackTrace: "at Microsoft.ApplicationBlocks.Cache.DataProtectionManager.RemoveMAC(Byte binaryMacValue) in
0
2318
by: mateipuiu | last post by:
When a try to run a client build on 2005, which uses the Microsoft.ApplicationBlocks.Cache.dll reference, when using a Microsoft.ApplicationBlocks.Cache.dll created on Debug mode, the client works just fine, but when a use a Microsoft.ApplicationBlocks.Cache.dll created on Release mode, the client doesn't work no more, and I get this error message: ********************************************* 1) Exception Information...
3
2510
by: =?Utf-8?B?Umljaw==?= | last post by:
Line #2 in the following code generates an error; what am I doing wrong? Error 1 The best overloaded method match for 'Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(string, System.Data.CommandType, string)' has some invalid arguments Code: Line #1 System.Data.DataSet dsCust = new System.Data.DataSet(); Line #2 dsCust = SqlHelper.ExecuteReader(sqlConnection,
0
9856
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
10598
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10657
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10299
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9436
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
7022
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5872
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
4071
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3136
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.