I have a member class that returned IQueryable from a data context
public static IQueryable<TB_Country> GetCountriesQ()
{
IQueryable<TB_Country> country;
Bn_Master_DataDataContext db = new Bn_Master_DataDataContext();
country = db.TB_Countries
.OrderBy(o => o.CountryName);
return country;
}
As you can see I don't delete the data context after usage. Because if I delete it, the code that call this method cannot use the IQueryable (perhaps because of deferred execution?). How to force immediate execution to this method? So I can dispose the data context..
I Want to know garbage collector works in .net there is something heap and stack funda.so can u please tell me from where i get reference of whole funda of that.and i have another question is that Please see below the code.here i declare one dt and get some data in it.and i don't want that dt after data come in text boxes.so in finally method i do dispose using dt.dispoe().but after that i write little code to check whether the dt correctly dispose or not.so i check with ifcondition after disposing.you can check code given below for that condition.as per condition it gives me "Nikunj" Ouput in message box it meanse dt is not disposed after calling the dispose method.so can u please tell me why?And i Want to know about all resources which i used i want to know how can i free it.whether it is variable,object,datatable,datareader etc..... if it is any where with example then please give me link.and if it's from msdn then it's better. i want to know from Microsoft that how Microsoft Suggest to do that.
Private Sub grd_expense_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles grd_expense.DoubleClick Dim dt As DataTable
I am new to ASP.NET and am constructing a small mobile site for our drivers to capture details when they deliver a parcel. Is there a way I can see the data sent and received from a user on the server? We want to track company related data usage and reimburse them for it...
I have a validation attribute that inherits from ValidationAttribute. However, the particular usage of this attribute applies to lists only (IEnumerable really). How can I specify the usage of this property to only be used with items that inherit from IEnumerabe?
How can I track the users who visit the site using Log file. I want to automate the same. We have deployed around 10 websites on the web server which include .net and Flex applications. I want to make the report of site usage. Would it be possible to do the same using log files?
I have a page where I load a couple of dropdown lists from the database (DB). I do this by calling a general function that connects to the DB and gets the data to the dropdownlist. This means that I can have three queries to the DB while rendering one page.
should I close and dispose the sqlconnection, sqlcommand and sqldatareader at the end of this function?
Would it be faster if I left it open for the next call, if you get what I mean, or is it best to close and dispose it every time?
But with MVC 3, I canīt create a child container per request(in really I can, using the old way), because container is hold at a static variable: DependencyResolver.SetResolver(new UnityDependencyResolver(container));
Which the better way to Dispose created objects? Since I use Repositories and Entity Framework (that need Dispose). As said here [URL] HttpRequestLifetimeManager donīt dispose objects....
Is there any real purpose to calling Dispose() on a Linq to SQL query? I want my site to be scalable so I'd like to control the datacontext but if it's not necessary I don't see a point.
If I explicitly put an oracle connection in a Using{} block I know that it will call the Dispose() method when it goes out of scope. My question is will the OracleConnection object be disposed in the following code block:
[Code]....
The OracleConnection is implicitly within the Using{} block for the OracleCommand and goes out of scope at the same time.
There's a problem, wherein a XML Document.Save is resulting in the error the process cannot access the file, because it is being used by another process or the statement an Invalid XML Document.I think it's because I do not dispose the XML Document object after it's operation is complete.Is it possible to do this.Is there a workaround?
When you create and use a Web Service proxy class in the ASP.Net framework, the class ultimately inherits from Component, which implements IDisposable. I have never seen one example online where people dispose of a web proxy class, but was wondering if it really needs to be done. When I call only one method, I normally wrap it in a using statement, but if I have a need to call it several times throughout the page, I might end up using the same instance, and just wondered what the ramifications are of not disposing it.
I have an ASP.net page that is creating a service reference to a WCF service and making calls in multiple places in my page. I instantiate the service reference in Page_Load and have an instance variable to store it:
I just discovered that I need to be disposing of the service reference when I am done using it or else the connections will be kept alive and will block incoming connections if I reach the max number of connections. Where would the best place to dispose of these references be? I was thinking of doing it on the OnUnLoad event.
I have a class DocumentGenerator which wraps a MemoryStream. So I have implemented IDisposable on the class.
I can't see how/where I can possibly dispose it though.
This is my current code, which performs a file download in MVC:
using (DocumentGenerator dg = DocumentGenerator.OpenTemplate(path)) { /* some document manipulation with the DocumentGenerator goes here ...*/ return File(dg.GetDocumentStream(), "text/plain", filename); }
This errors as the stream is closed/disposed before the controller has finished with it. How can I make sure my resources are properly disposed in this situation?
EDIT: My implementation of IDisposable at the moment just disposes the MemoryStream. I know it's not a proper implementation, I just used it as a test. Is there something different I could do here to make it work?
public void Dispose() { _ms.Dispose(); _ms = null; }
I have created an asp .net ajax control, meaning i have a javascript object linked to this control. In that object as usual i have 2 crucial methods: initialize and dispose.
[Code]....
In internet explorer dispose method is invoked every time user leaves the page, even when closing the browser. But not in chrome, its invoked by refreshing the page but not by closing the tab or window. Do you know how to achieve this?
I use SmtpClient to send email. I want to ensure that the SMTP connection gets closed after each message is sent. I found an explanation of how to do this in the SmtpClient documentation on MSDN:
[URL]
One thing it says is: Call Dispose when you are finished using the SmtpClient. The Dispose method leaves the SmtpClient in an unusable state. After calling Dispose, you must release all references to the SmtpClient so the garbage collector can reclaim the memory that the SmtpClient was occupying.
I have a question about the last part. What exactly does "release all references" mean. How do I do that?
project was clean after release build, but when i ran "Run Code Analysis" i got 256 errors. the error below is one of them. will be great help. if anybody can explain, what is the meaning of this error?
Here is the code of my Repository class:You see, I use singleton here. Also you see, there is a data context as class variable of Repository class.The main reason to use singleton here is a wish to avoid using 'using(NorthwindEntities context = new NorthwindEntities())' in every function.
[Code]....
This Repository is used in ASP.NET application. So only instance of NorthwindEntities (context) is used everywhere and that's why I never dispose it.So my question is: Won't this code cause connections to the DB that are not closed?
I am creating a core library for one of our internal project. This core library supposed to contain some abstract classes and generic classes which will then be extended by specialized projects. For example, There is an AbstractPerson class with standard properties and methods for a Person class while another project will implement a Person class which will inherit from the AbstractPerson class to add project specific functionality.
Now we need to impelment DAL for this common and specialized projects.As most of operations are generic so i want to include them into core library as Repository classes. However, Repository classes need to access LINQ dataContext. Which is generated from the specialized databases. Hence there is no dataContext available in Core library to work. So how could i can create a common repository classes for generic methods which can reside in the common library.
I set the Databinding of a repeater to a list of classes i.e. List<Message>, I have used the ItemCommand event before to pull out individual ID's etc based on the CommandArgument, however is it possible to make the class itself the CommandArgument instead of one of its properties, this way I have them all at my disposal.For example say I have a list of messages and within the repeater I have this:
[Code]....
However I want to pass the Message class as the argument instead, can this be done?
