DataSource Controls :: Singleton Pattern For SQLConnection?
Apr 19, 2010
I have a whole bunch of data access methods where in each one I am doing this
[Code]....
and them moving on with my SqlCommand and SqlDataReader and so on.Is this creating to many instances of an SQLConnection?I was thinking doing this instead. Creating a SqlConnection Manager which would look like this
[Code]....
and then in my database access methods
[Code]....
Is this a good or bad idea and why?Also would this even be neccesary?
View 2 Replies
Similar Messages:
Aug 4, 2010
I have a class which fetches the data from the database. Say First name, Last name , Telephone number etc and display it in my .aspx page. This data is common to all the users. So i would like to use Singleton pattern so that the object is not created again ,just use the created object for all the users. Can any one help me with the simple code snippet example.
View 3 Replies
May 12, 2010
I have a web application where I would like to pull user settings from a database and store them for Global access. Would it make more sense to store the data in a Singleton, or a Session object? What's the difference between the two?Is it better to store the data as an object reference or break it up into value type objects (ints and strings)?
View 3 Replies
Sep 16, 2010
i'm building a web application with asp.net c# and i have a class that i want to use in multiple pages witouth instantiate it every time. I need to load the data in it and never lose them during the user session time. I thought about the singleton-pattern but it shared the instance of the class beetween browsers.
View 4 Replies
Jun 16, 2010
I am working on singleton desing patterns and want some real world example of design patterns.Can you please give me an example how you have used singleton pattern in you project. I would appreciate if you can provide code.
View 3 Replies
Feb 9, 2010
I'm developing a blog application shared by non-profit organizations. I want each organization to be able to change their own blog settings. I have taken a singleton pattern (from BlogEngine.net) and modified it. (I understand that it is no longer a singleton pattern.) I have tested this approach and it seems to work fine in a development environment. Is this pattern a good practice? Are there issues, which may arise when this is placed in a production environment?
public class UserBlogSettings
{
private UserBlogSettings()
{
Load();
}
public static UserBlogSettings Instance
{
get
{
string cacheKey = "UserBlogSettings-" + HttpContext.Current.Session["userOrgName"].ToString();
object cacheItem = HttpRuntime.Cache[cacheKey] as UserBlogSettings;
if (cacheItem == null)
{
cacheItem = new UserBlogSettings();
HttpRuntime.Cache.Insert(cacheKey, cacheItem, null, DateTime.Now.AddMinutes(1),
Cache.NoSlidingExpiration);
}
return (UserBlogSettings) cacheItem;
}
}
}
(Portions of code were omitted for brevity.)
View 3 Replies
Aug 19, 2010
I know what Singleton Pattern means and Abstract class means.What I wanted to know was how would this apply to real world.Could anyone give me any good example or simple explanation.Say I have a simple website, why would I use any of the above if any.Why would it simplify my architechture.
View 3 Replies
Jun 25, 2010
If I were to use singleton pattern for menu, would that cause that menu to be created once for application session or once for each user session. Obviously, I want something that will create menu items once per application session.
View 2 Replies
Jan 25, 2010
want to make sure I am not assuming something foolish here, when implementing the singleton pattern in an ASP .Net web application the static variable scope is only for the current user session, right? If a second user is accessing the site it is a different memory scope...?
View 4 Replies
May 7, 2015
In one of the interview, I was asked why should we have to go for Single Design pattern, instead of just creating static methods. Because creating static methods also serve the same purpose, i.;e avoiding flooding of objects.
View 1 Replies
Mar 4, 2010
i have 5 methods in classA. each and every methods i have open the sqlconnection and close it, instead of that is there anyway to create a sqlconnection at one time if its opened then no need to create a new connection, if its closed then we have to connect.
View 5 Replies
May 22, 2010
Is it possible to use a pre-existing ConnectionString in this construction?
myConnection = New SqlConnection("server=localhost;" & "database=pubs;Trusted_Connection=Yes")
Regards -Penn
View 3 Replies
Jul 2, 2010
i am making a simple cms system
but I have a problem when updating some information
here is the code
[Code]....
and in the page load everything is fine
[Code]....
View 2 Replies
Oct 29, 2010
'SqlConnection' is not defined in the behind code as follows:
Source Error:
[Code]...
Source File: I:WebsitesCMPHostFox BackupDefault.aspx.vb Line: 24
Snippet reads as follows:
[Code]...
View 5 Replies
Apr 15, 2010
can capture return value from a SQL by using SqlConnection SqlCommand
[Code]....
View 3 Replies
Mar 25, 2010
I'm trying to determine whether it is better to declare the connection outside with it's own using statement or to create it inside the sqlcommand itself. This is in regards to a single command interaction with the database (no loops).
[Code]....
Or
[Code]....
View 6 Replies
Feb 26, 2010
I am using "ASP .Net 2.0" with "SQL Server 2005". What is better and preffered approach towards making a sqlconnection to interect with database?
1. To open new connection each time we need to interact with DB and then close the connection
2. Or to make a shared database connection for whole web application.
View 2 Replies
Jan 26, 2010
I know you can point to a OnSelecting event on the aspx page datasource. But I've created my SqlDataSource in the code behind. Is there any way to point to a selecting event in the code behind (I need this to provide the parameters)? Or should I just include all my logic in the Page_Load event (where I keep my SqlConnection)Here's what I have so far:
protected void Page_Load(object sender, EventArgs e)
{
SqlCommand myCommand = new SqlCommand();
[code]...
View 1 Replies
Mar 14, 2010
How do I make ObjectDataSource work with singleton Business object? My singleton business object is defined in Global:
[Code]....
I get an error:The type specified in the TypeName property of ObjectDataSource 'objThreads' could not be found.
View 2 Replies
Feb 11, 2010
'i'm working with visual studio 2005 asp.net c#. and i want to bind my website to my database with the "sqlConnection"
how do i get and set details from the database to the website fields with the sqlCommend and ect...
View 1 Replies
Apr 18, 2010
design pattern that works well with Visual Studio data tools against an MS SQL server; to retrieve a subset of an object's fields for all rows, and then on-demand retrieve the remainder for one row. I.E. just the small summary fields that I will serialize to a master grid view, then the larger properties including a large blob that I will render in a detail view. The performance hit from retrieving the large blob with the master result list would be too great.
The data shape is static, and I can define two separate data classes to match the specific summary vs. detail information returned. However that sounds anti-pattern-ish, to define the data classes specifically to suit the presentation layer. It also presents another problem, how to translate from the summary item to the detail item in an object-oriented way?
View 9 Replies
Oct 13, 2010
We have an ASP.NET MVC site that uses Entity Framework abstractions with Repository and UnitOfWork patterns. What I'm wondering is how others have implemented navigation of complex object graphs with these patterns. Let me give an example from one of our controllers:
[code]....
It's a registration process and pretty much everything hangs off the POCO class Person. In this case we're caching the person through the registration process. I've now started implementing the latter part of the registration process which requires access to data deeper in the object graph. Specifically DPA data which hangs off Legal inside Country.
The code above is just mapping out the model information into a simpler format for the ViewModel. My question is do you consider this fairly deep navigation of the graph good practice or would you abstract out the retrieval of the objects further down the graph into repositories?
View 2 Replies
Feb 23, 2010
Does anyone have a working pattern for converting a GET-POST-GET pattern to asny?
I'm encountering the following issues:
1. You cannot mix Sync and Async action methods SubmitForm(), SubmitFormAsync(bool? confirm), SubmitFormCompleted() ... (because the resolver gets all confused ... it doesn't use the HTTP verb to decide who to target. BTW: I think that's poor design, or a bug)
2. Renaming the get method name to something else eg: SubmitFormConfirmation(), SubmitFormAsync(bool? confirm), SubmitFormCompleted() would be very awkward if it works ... because you have to doctor the <form markup to specify an action name.
3. You cannot give them all async names SubmitFormAsync(), SubmitFormAsync(bool? confirm), submitFormCompleted(), because the call just keeps malfunctioning. It sometime even behaves as if you are requesting a delete of something.
Can someone give an insight from an actually working sample.
View 5 Replies
Aug 21, 2010
Now that the next version of ASP.NET MVC is being prototyped and previewed (ASP.NET MVC 3 Preview 1 came out a couple of weeks ago), I wonder if we should call the attention of the Core Dev team (S Hanselman, Phil Haack and all) to this "feature."there a easy/non tacky way of associating subdomains → areas?Something like:
[URL]Also, whats the best accepted design pattern in implementing PRG pattern in ASP.NET MVC? I guess it should also get some official loving in MVC 3.
View 2 Replies
May 17, 2010
i would like to know if there's something wrong in this asp.net code:
mydatareader = mycmd.executeReader()
if myDataReader.HasRow then
// Do something
end if
myConnection.Close()
If i avoid to call a "MyDataReader.Close()" does the connection close anyway ? I ask this because i'm assuming that if call a "MyConn.Close" it automatically close the associated datareader... or am i wrong ?
View 4 Replies
