Web Forms :: How To Use Mutil Webcontrol With Webservice Pooling
Feb 15, 2011
My project use asp.net web form, and I code it with masterpage, page and mutil webcontrol to render a web page. A problem, request it slowly. I want to increase performace. I use webservice to request data, whole web control has code to request data from webservice.
I review code, and I think if my web used webservice pooling to render a webpage. But I haven't know how to code better, remove all webcontrol, and move their code to create a web page like asp web page (not asp.net)! using only one webservice to request data...
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Mar 5, 2010
I'm not having much fun with connection pooling. The website I've written does dip into the SQL server all the time and quite a lot of times per page. Every time I nip into the SQL Server to get or set something I open a connection...
comGeneral.Connection.Open()
... do or get what I need and then close it. From what I've read any of the following should close the connection and return "one connection" (?) to the pool (top one, only if reading)....
rdrGeneral = comGeneral.ExecuteReader(Data.CommandBehavior.CloseConnection)
comGeneral.Connection.Dispose()
comGeneral.Connection.Close()
... but that's not really working for me and I keep hitting the default max 100 open pools. So I've been doing all 3 of the above (again, top one, only if reading). But alas, still the stupid thing (Yes, I am aware I'm the stupid one) keeps hitting the max.
My new plan is to set pooling to false (pooling = false ?) across the entire website and take the performance hit which wont be terrible because I don't really do anything too demanding. Trouble is I don't know how, other than setting Pooling = False, but where exactly in the webconfig would this bit of code go?
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Jul 12, 2010
Should I write my own connection pooling scheme?
(Question rewritten again so I can upvote peoples answers)
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Mar 28, 2011
We're trying to get connection pooling working with uodotnet and currently failing miserably. When we turn connection pooling off everything works as expected, but when we turn it on we often get timeouts or errors with one of the following trace outputs:
2011-03-28T15:09:28 System.Exception: Non-negative number required.
[Code]....
Not all the requests fail (for example, when run through a load testing tool, 7/20 requests failed with the timeout problem).
It seems that the sessions are remaining in the pool and new attempts to create a session are repeating until the timeout limit is reached (30 seconds). We're using uodotnet.dll version 2.1.1.7196 and UniVerse version 10.3. running on an HP-UX server. We've got a single license on the dev machine we're testing on with 10 connections available in the pool (theoretically!). We're writing an ASP.Net web site, and we create a new session in the Page_Load() event which is passed to all UniVerse routines and then call close on the session in Page_Unload()/Page_Error().
to what we're doing wrong? We expected that connection pooling would improve performance, falling back on the standard mechanism if the pool was full, but whereas the non-pooled version works fine with 20 simultaneous requests, the pooled version regularly fails. We've set the connection pooling on in the application's web.config, setting MinPoolSize to 1 and MaxPoolSize to 10, leaving everything else at the defaults.
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Aug 22, 2010
Is it possible to use Microsoft.Web.UI.WebControl in .NET 2.0?
On the page
[URL]
you cant even download them!
On the page
[URL]
it is said that "The Internet Explorer Web Controls is an archived ASP.NET 1.1 download".
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Dec 14, 2011
I have added one div in aspx page and i want to take the Id of that div in code behind file by using webcontrol.
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Dec 7, 2010
If I open a connection and don't close it after query execution completes, store it somewhere, and use it next time a request comes in, isn't it something similar to what .net does? Is it possible to maintain a pool of connections according to our requirements without depending on ADO.NET's internal mechanism? In case of ODBC, I read somewhere that connection pooling will have to be enabled from ODBC datasources and that it cannot be set from within .net. What if I open a few ODB connections, leave them open and
use those whenever a request comes in and close all of them when I know that I dont need them anymore. How is it different from connection pooling?
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Apr 11, 2010
I am designing an ASP.NET (3.5) web application that connects to a Rocket Software UniVerse database.
I am shooting for a RESTful design and a MVC pattern. Rocket provides a .NET library called UniObjects.NET which handles everything for connecting and retrieving information from the database.
What would be the best way to in general to log my users into the database, then use that session via connection pooling? I see that in 3.5 there is the ASP.NET Routing Infrastructure and that looks promising am I in the right direction on this? Also does C# support decorators like Python and Java?
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Feb 4, 2010
I'm currently experiencing and issue on whether to say a connection has been left open due to my code or if it's left open due to ADO.NET pooling. Here's a sample of my code:
Public Function ExecuteDataTable(ByVal strStoredProc As String, Optional ByVal objParams As SqlParameter() = Nothing, Optional ByVal cmdType As CommandType = CommandType.StoredProcedure) As DataTable
Dim objDt As New DataTable
Dim objAdapt As New SqlDataAdapter
Dim objParam As SqlParameter
Try
OpenDb()
If Not IsNothing(objParams) Then
AddParams(objParams)
End If
objAdapt.SelectCommand = New SqlCommand
With objAdapt.SelectCommand
[Code].....
Then when I go to open up the SQL Mgmt Studio, I look into the processes and the particular connection that has ran with the SQL that my function runs appears to remain open. So to me, it looks like ADO.NET is performing some kind of pooling. Is it safe to make that conclusion? How would I be able to tell if the connection is available to be used again by the ADO.NET pool?
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Apr 28, 2010
How does .NET maintain the Connection Pooling internally?
Where it is stored for different kind of aplication(WebApplication,Console)?
Can we configure the IIS for Connection Pooling?
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Jan 12, 2010
Some one can explain me the behaviour i am observing is correct..?
[Code]....
and here is the connection string:
<add name="SecurityDB" connectionString="Data Source=xyz,8000;Initial Catalog=abcd;User ID=abcd;Password=defg" providerName="System.Data.SqlClient"></add>
i expect it to fail at 101 iteration as the default max pool size is 100 and i am not releasing any connection after i open(ie., Not closing or Disposing). But the strange behaviour is i can go up to 230 iterations and then it gives me a timeout error, can not acquire new connection.
When i look in SQL Database for number of connections created it is only 100.
My question is : When connection is not released, how is it able to re-use the previously opened connection.
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Dec 20, 2010
I am trying to change an attribute on a textbox when a DDL value has changed. here is the code. <asp:DropDownList ID="DropDownList2" runat="server"
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Mar 24, 2010
I have a page which holds a custom webcontrol and a usercontrol. I need to reference of webcontrol in usercontrol class. So, I make the declaration of webcontrol as public in page class. But, when I do "this.Page.", I don't see the webcontrol listed in list provided by intellisense. Most probably, I am missing something.
In an asp.net page, how to get a reference of a custom webcontrol from a usercontrol?
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Aug 31, 2010
A Template contains <input type='CheckBox'>(not server control) in my GridView.
The idea that get the which line I checked and get the data of the line at other columns.
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Jan 18, 2011
I created this simple custom web control:
[Code]....
I used this control on my page:
[Code]....
The problem is that when page is displayed in web browser is see default back color, font and border, values from page are not applied on the my control. Why?
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Jun 9, 2010
I am using microsoft enterprise libarary to connect to mysql using mysql .net connector (latest version 6.2.3)
But i am facing a problem of too many connections and connection pool reached maximum limit issue.
As connection is disposed by enterprise library iteself so i dont close the connection anywhere.
So after two or three hours i found i have 100 mysql connections in sleep mode which are doing nothing and are not being reused from the code .
So i want to ask is there any issue with my code or is there any issue with mysql connector
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Mar 10, 2010
How to check/confirm that whether SQL connection pooling is enabled for a sharepoint 2007 web-application ?
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Aug 17, 2010
i have a webcontrol that contains a modal popup that allows the user to enter in some information. When the user clicks submit the popup should close and the gridview on the page update. The problem that im currently getting is the page refresh is done before the data is inserted and is currently the last action fired in the life cycle. How can i make the insert within the control the first thing to happen in the page life cycle or update the page gridview once the popup has inserted the information. Im currently placing the datagrid within an update panel with updatemode set to conditional and a trigger on the custom control.
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Jan 28, 2011
[Code]....
My question is: how can i create my own parameter based upon the QueryStringParameter?
Example:
[Code]....
I now called it QueryStringGuidParameter.
The purpose of this is: I'm not sending any querystring's via the aspx?querystring other thasn aspx?guid={guid identifier}.I hope my code below explains it al little bit.
[Code]....
A soon as a page Redirects f.i. with this example
[Code]....
Instead of calling Response.Redirect i call the Redirect i created. This transforms the querystring in a session with a guid and parameter. The Redirect only sends the guid in the querystring. and the receiving page picks up the guid and translates it back into a querystring.
Purpose is you have a secure way of dealing with info sending via querystrings. Lets say in the past you could easily get other info from the page by just changing a value in the key send via a querystring. In my case lets say the user request a Customer "A" with querystring ?ID=1.
Simple change the query in the addressbar to ?ID=2 (or something else) would give him another customer. Maybe a customer he is not allowed to see. (Of course this can be prevented also in the business layer, but that's not the point.)
So if i simply could create a new QueryStringParameter lets say called QueryStringGuidParameter which i can use in the ObjectDataSource but ideally just for all controllers which are able to use the QueryStringParameter , i don't have to go into code behind and set the SelectParameters in there.
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Mar 16, 2011
I have what is probably a basic question but I do not understand if/why there is a difference. I have a simple asp.net page with a staticly created DropDownList and Panel control. The user can select one of three options if the drop down (Employee, Company, Address) which should load the respective custom UserControl into the panel below. By default, I have the Employee control selected in the drop down and it should be displayed on the intial Page Load (!Page.IsPostBack).
If I do the following it performs the desired behavior on the intial load:
[Code]....
If I try the following, the User Control does not appear on the initial page load:
[Code]....
I noticed if I do it with a textbox instead of a UserControl, it works however:
[Code]....
I assume there is some sort of behavioral difference in the way the loading is done between a UserControl and WebControl.
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Sep 27, 2010
I'm using the DataList WebControl for the first time. What I am wanting to do is dynamically load a datalist bound to a datasource with radiobuttons. This datalist control resides within a <div>. In design mode, everything looks great, however, when I run my web app...nothing appears. Do I need to associate the datalist control to the div by chance?
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Oct 8, 2010
I have a WebControl that I'm creating and when I'm in the designer...you really can't tell what it is...see Attachment 1 below. See Attachment 2 for what it looks like rendered in the Browser (IE & Firefox). What would cause this. I really can't even throw controls onto the UC looking like this. I have to go into the markup and do the drag and dropping.
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Mar 2, 2011
I have a ListView control in Asp.Net WebForms which display a set of elements, I have at the end a "More" button like Facebook for example. During the postback I want to get from database another 10 elements (I have already displayed 10 and I don't want to retrieve them again)
Something like this.
foreach (var item in New10Items)
ListView.Items.Add(index,DataItem)
the problem is with DataItem, how to Bind it before add it? what is the best way of solving this?
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Nov 4, 2010
1st) Server retrieve an image from Database, in the Database i've only the path, then i encapsulate the image in a XML and i send this XML to the client.
2nd) The client decapsulation the img, so the client has an array of bits with the image. it's not allow send the path for security.
Now i need associate this image with my webcontrol img.
i do something like
ImgUrl = "Handler.ashx?num_doc=13"
and it works, but really i need do something like:
ImgUrl = "Handler.ashx?num_doc=" + num_doc;
where num_doc it's a http parameter recieved from a page. I'll try to put the ImgUrl from code but it doesnt work, just show a path.
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Jan 27, 2010
Recently I bumped a problem with an asp.net application where seemingly random errors were thrown, although they were all related to the use of a connection object. Coming from Classic ASP, I wrote my pages by creating a connection object at the top of the page, and using that connection throughout the page. The connection object was opened whenever something had to be done with the database and closed immediately after.
Connectionstring:
"Data Source=<server>;Initial Catalog=<catalog>;Integrated Security=false;user=<user>;password=<password>;Pooling=False;"
So pooling=false.
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