DataSource Controls :: Best Way To Close Or Dispose (All Ado.net Object)?

Jan 4, 2010

what is the best to close or dispose all the ado.net object

eg:datareader.close(); or sqlcommand.Dispose();

if programs hangs in the middle(because of error), then how to close all the ado.net object so there will be no memory leak

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ADO.NET :: When To Close And Dispose A Connection

Feb 28, 2011

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?

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Mar 23, 2011

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ADO.NET :: DbCommand.Dispose() Automatically Close The Database Connection?

Nov 9, 2010

does DbCommand.Dispose() automatially close the database connection?

Here is my code:

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[Code]....

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C# - Dispose Of Custom Object From Within Custom Membership Provider?

Apr 16, 2010

I have created my custom MembershipProvider. I have used an instance of the class DBConnect within this provider to handle database functions. Please look at the code below:

public class SGIMembershipProvider : MembershipProvider
{
#region "[ Property Variables ]"
private int newPasswordLength = 8;
private string connectionString;
private string applicationName;
private bool enablePasswordReset;
private bool enablePasswordRetrieval;
private bool requiresQuestionAndAnswer;
private bool requiresUniqueEmail;
private int maxInvalidPasswordAttempts;
private int passwordAttemptWindow;
private MembershipPasswordFormat passwordFormat;
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private int minRequiredPasswordLength;
private string passwordStrengthRegularExpression;
private MachineKeySection machineKey;
**private DBConnect dbConn;**
#endregion
.......
public override bool ChangePassword(string username, string oldPassword, string newPassword)
{
if (!ValidateUser(username, oldPassword))
return false;
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OnValidatingPassword(args);
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{
if (args.FailureInformation != null)
{
throw args.FailureInformation;
}
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}
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if (config == null)
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......
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dbConn.ConnectToDB();**
......
} //Initialize
......
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I have instantiated dbConn object within Initialize() event. My problem is that how could i dispose off this object when object of SGIMembershipProvider is disposed off. I know the GC will do this all for me, but I need to explicitly dispose off that object. Even I tried to override Finalize() but there is no such overridable method. I have also tried to create destructor for SGIMembershipProvider.

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DataSource Controls :: Open / Close Connection To DB?

May 4, 2010

When I'm using this to open Connection to DB,

Do I need to Close it at the end?

Or by using it, it close by itself?

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[Code]....

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Apr 20, 2010

im tryin to create a login form.

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Object reference not set to an instance of an object

[Code]....

and heres my aspx page:

[Code]....

Stored procedure:

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DataSource Controls :: Get Child Properties Using Parent Object Error / Cannot Access A Disposed Object

Feb 17, 2010

On DBML I have two entities as Parent, Child. I am trying to assign Child class properites in a Parent.

[code]....

I am getting the following Error:

Cannot access a disposed object.

Object name: 'DataContext accessed after Dispose.'.

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DataSource Controls :: Getting Error - Object Reference Not Set To An Instance Of An Object?

Jul 27, 2010

[code]....

i'm having trouble because when it has no return value i get the error

Object reference not set to an instance of an object.

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DataSource Controls :: Error - Object Reference Not Set To An Instance Of An Object

Jan 24, 2010

im using a sqldatasource and i want it to query a table chosen from a dropdownlist, so i wrote the following in the .cs file

[Code]....

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Is it mandatory to close database connection in enterprise library 4.1?

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DataSource Controls :: Object Reference Not Set To An Instance Of An Object?

May 26, 2010

I am adding rows to table and setting value row/cell value, but for datetime field it is giving me error

Object reference not set to an instance of an object.

Initially I am adding a column to table as

table.Columns.Add("Upload Date",
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As I have I also null or empty value in the "Execution Date" field .

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Web Forms :: Invoke Close Session Object?

Mar 26, 2010

On my web page, I've a shared object with initiate (open session) on the load event.

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I have a System.Data.Linq.DataContext object and need to know the proper way of closing it out before it goes out of scope in order to prevent the following error when making a bunch of database changes:

Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.

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I guess what I want to know is will calling obj.Dispose() end up executing the functionality in obj.Connection.Dispose() and obj.Connection.Close(). The MSDN documentation that I found on these functions does not have this information (at least I didn't see it - I could have mistakenly overlooked it).

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[Code]....

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Object Access Class
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[code]...

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[Code]....

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So in additiona to the traditional:MyBusniessObject.OrderID...I want to use:MyBusniessObject.Customer.NameID
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DataSource Controls :: Getting The Old "Object Reference Not Set To An Instance Of An Object" Error ?

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I'm getting the old "Object reference not set to an instance of an object" error on this code:

nonqueryCommand.Parameters.Add("@comment", SqlDbType.VarChar, 500)
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DataSource Controls :: Using Web Service With Object Datasource?

Mar 5, 2010

have an object datasource that calls a web method to retrieve a set of data. That web service resides on another remote server with Windows Authentication enforced. How do I pass in the credentials required for the authentication from my web application? My code is as follows:

[Code]....

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I have website which runs multiple threads. When user close the browser but threads are still running. How to kill/stop all thread in asp.net on browser close.

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Jun 22, 2010

I am developing on application in that i have taken one list box and getting data to it using an object source.up to this stage it is fine.I need to compare these value what i get into list box and need to represent data in to a report viewer ..how to get these values from objectsource.i m new to c# i placing the code.

[Code]....

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