ADO.NET :: Open And Close Connection?

Mar 23, 2011

When should i open and close the database connection.and which are best data classes (for e.g dataset, datatable etc) should i use when connection is open or close.

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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?

using (SqlConnection cnn = new SqlConnection(connectionInfo))

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Visual Studio :: Error Unable To Add Data Connection. ExecuteScalar Requires An Open And Available Connection. The Connection's Current State Is Closed?

Sep 13, 2010

I'm using Visual Studio 2008, and my database is SQL Server 2000.

I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.

But when I click OK, I get the error:

Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.

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Jun 5, 2010

I previously used a datasource and a connection string to connect to my database on sql server and all orked fine. The connection string was saved in my web.config file and is: ....

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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?

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WCF / ASMX :: Best Place To Close The Connection

May 9, 2010

we are using WCF web service. My job is to create the client WCF service.

Sample 1
try
{
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[code]...

Which the best place to close the connection. Is it in Server side or Client side?

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Performance - Close HTTP Connection In C#?

Mar 30, 2011

Our site was under Slow HTTP POST DOS attack recently. It's when your server receives a lot of incoming connections and keep them for long time because the sender sends information very slow and server cant serve real users' request - denial of service.

So I decied to reject such POST requests:

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{
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{
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Dec 17, 2010

How to close connection in web.config?

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Use Global Asax To Close Opened Connection

Nov 25, 2010

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SQL Server :: Close DB Connection Upon Application Termination?

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The reason this question came up, is because if I run my website application with a SQL Server data store, and I terminate the browser (terminating the session), I try to open up SSMS to edit the DB. But I can't access the database because I believe there is still an open connection, even after application termination.

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I made a site www.hediyelikdukkani.com and I added the site to goole from web masters tools. But google doesn't index my web site. When I test my site how the google see from Test like a Google bot from web masters tools it says that

[Code]....

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

Here is my code:

Database db = DatabaseFactory.CreateDatabase("DBIS");
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[Code]....

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Closing-routine / Close Connection Command After Getting Data From The Database?

Oct 4, 2010

I am using a adapted version ofhttp://www.mikesdotnetting.com/Article/45/Programmatically-accessing-data-from-DataSource-controlsDon't we need something like a closing-routine / close connection command after getting data from the database?If yes: What is the correct closing command?

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Is It Necessary To Open And Close Connections When Using SqlDataAdapter

Jan 28, 2013

Is this necessary to open and close connection when i am using SqlDataAdapter and DataSet to get data from  from table from  databse in sql server? Which one will be better to use in the following code. Code1 or Code2.

Code: 1 With open and colse connection

public DataSet GetFAcadSlidingImage()
{
SqlConnection con = GetConnection();
cmd = new SqlCommand("Pro_GetFAcadSlidingImage", con);
cmd.CommandType = CommandType.StoredProcedure;

[Code].....

Code:2 Without open and colse connection

public DataSet GetFAcadSlidingImage()
{
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[Code].....

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Databases :: Mysql Odbc Database - Syntax / Connection Not Close Errors

Aug 18, 2010

[Code]....

I can check whether username exists or not successfully but not for email. any ideas why it isn't working? Error message was that i did not close my connection. using System;

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Mar 23, 2010

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

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AJAX :: Use Javascript To Open And Close A Cpe When The CPE Is In A Masterpage?

Sep 2, 2010

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[code]....

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Javascript Close And Open Pages At The Same Button?

Mar 11, 2011

In PageA, there is a button to open a crystal report. I want to add a HTML button into crystal report to close report(browser) and back to PageA. How to use javascript to do this job?

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Using Con,open And Close When We Use A Dataset Is A Bad Coding Practise?

Mar 15, 2011

below i am using dataset and con.oen and close. but i read that dataset doesnt require con.open/close since it does that autoatically.now my project is complete and implemented with opens and closes for datasets.here is code for all datasets are liek this:-

[Code]....

1)so is what i have done a bad coding practise?2)will it make the application pool to hang?3)should i remove all open/close from the files?

Dim ds As DataSet = New DataSet
con.Open()
Dim dad As SqlDataAdapter = New SqlDataAdapter(cmd)

[code]...

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If I have 5 CollapsiblePanelExtenders on page and I want open second one I want close the first one and then open second one...How??

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I am tring to open the panel with clicking linkbutton and to close the same panel using that link button .How can i write close and open in one event .

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Mar 10, 2010

I'm using 3 diff websiteA,B.C. Im logging in A and accessing B,then logging out it means B has to close;then the redirection is A.likewise C to B.

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I deployed my MVC app to IIS 7.0 and I keep getting the following error; ExecuteNonQuery requires an open and available Connection. The connection's current state is closed I dont get this with the app locally on my machine. Where could this error be occurring??

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In PageA, there is a button to open a crystal report. I want to add a HTML button into crystal report to close report(browser) and back to PageA. How to use javascript to do this job?

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I am opening a thickbox in aspx page using following line

<a
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Page.ClientScript.RegisterStartupScript(
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