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Web Q&A: Caching and Expiration, Connection Pools, and More

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net
 

More Related Resource Links

SQL Connection String

  
We can learn or know how can we connect the database from our .net. This will help for freshers or .NET beginners!

abstract away the source of the connection string using a class with a static property.

  
ASP.NET provides a configuration system we can use to keep our applications flexible at runtime. In this article we will examine some tips and best practices for using the configuration system for the best results.

The element of a web.config file is a place to store connection strings, server names, file paths, and other miscellaneous settings needed by an application to perform work. The items inside appSettings are items that need to be configurable depending upon the environment, for instance, any database connection strings will change as you move your application from a testing and staging server into production.

Encapsulation
Let's abstract away the source of the connection string using a class with a static property.

ASP.Net Caching problem ??

  

I'm having a problem with an asp.net 3.0 application using a gridview to display data.  The problem seems to be that despite a brand new .selectCommand being sent to the sqlDataSource, the gridview starts displaying data from *someone else's* query.  For example, user A is logged in and will be working fine until a few page submissions later when the gridview data starts suddenly showing information that belongs to another user. 

This is my first asp.net application, though I've been working with classic asp and ADO for years so I'm used to sending a SQL string and getting back the results from that string.  Apparently there is a complex caching system which is interferring which I do not at all understand so at this point I just want to stop the server from caching any data whatsoever.  Is this possible?

Any and all help will be much appreciated!!


is the page caching?

  

I am just trying to understand the basics flow to the MVC framework by putting in some breakpoints in the beginning of the actions of a couple of controllers.

One break point is at the HomeController/Index action where it just returns View() of the "Welcome to MVC".  The Second break point is at a SecondController/Index action where it uses the Entity Framework and returns a View() of a list from the db.

When I run this in debug, it breaks at the points I expected when I go from Home page to the Second page controller and back to Home.  However, when I go to the Second page again, it doesn't break at all?  Is the results of the Second page being cached and how and where?  How do you trigger for it to get check if data is old?

I check to see if the persistence is done on the db, by changing the value of a field on the db side and it still did not cause it to break on that action and displays old information in the view.  I am concerned because it is displaying incorrect values on the UI.  I do not have the OutputCache attribute above this action or specified any cache on my web.config.

Thanks in advance for your time :)


connection string question from a newbie

  

when publishing  in the webmatrix dialogue it asks for "destination connection string" for my "database.mdf"

I was not sure what it was so I pasted this from my web.config file :

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\database.mdf;Integrated Security=True;User Instance=True

it all published ok, but wont run, so I guess it has somthing to do with this connection string or some kind of configuration issue.

My question is this, What should go in the field for "Destination connection string"


Data caching c#.net

  

Hi Friends,

 

I have a large SQL Database in the server from which I can create a dataset of about 10000 rows. My question is about caching this data. Which type of data caching should I choose (Server side or Client side)? Which one will provide better performance?

 

Thanks in advance


localhost is not set up to establish a connection on port 51624 with this computer

  

I'm trying to run asp.net locally, but getting the error

localhost is not set up to establish a connection on port 51624 with this computer

How can I fix it?


connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly.

  

I dont have the SQL EXPRESS installed instead I have SQL Standard Edition.

 I have two SQL Server instances installed.

 1- UserLT (this is sql 2000)
2- UserLT\SQL2005 (this is SQL 2005 named instance)

But when i try to add a database to my VS website project I get the following error:

Connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly. please verify the installation of the component or download from the URL: go.microsoft.com/fwlink/?linkId=4925

I went in Tools>Opetions>DataBase tools>Data Connection>Sql Server Instance Name (blank for default)

and changed the "SQLEXPRESS" to "USERLT\SQL2005".

But I still get the same error message. Any ideas how i can resolve this issue?


Unable to make connection to database?

  

Hy guys. I try to connect my database for so long so i wrote two type of codes. Let's discuse first on.

I have database called PhoneDirectory.

It have only one table named Residents.

I have button wiht ID="Button1".

I want when i click this button to see all of my residents. 

I want to see the result in DetailsView and to be able to edin, delete and add new resident.

First try with SqlDataSource so i wrote this:


<asp:SqlDataSource ID="Resident Details" runat="server" ProviderName="System.Data.SqlClient" ConnectionStrings="<%$ ConnectionStrings:ThisIsTheConnection%>" 
              SelectCommand = "SELECT * FROM Resident "
              UpdateCo

Need Oracle Data Provider .CS File for Oracle 10g Database connection !

  

Hi.,

I need a 'Wrapper.cs' file which takes care of the Database connection ( Oracle 10g) where

i can just call the method with my SQL Query

(eg)

Gridview1.DataSource = SampleWrapper.ExecuteDatatable("THE SQL QUERY");

Gridview1.DataBind();

Plz Post the link if there is any open source !    


Intermittant error: "A connection attempt failed because the connected party did not properly respon

  

Greetings,

I'm having a doozy of a problem, and can't find a solution.  I have a WFC Web Service installed to a pair of servers, and accessed through a load balancer.  I am accessing the service from an ASP.NET client app, also via WCF.  The Client is not load balanced.

I'm getting an intermittant error:

(Inner Most Exception) System.Net.Sockets.SocketException:  A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond x.x.x.x:80

(Middle Exception) System.Net.WebException: Unable to connect to the remote server

(Outer Exception) System.ServiceModel.EndpointNotFoundException:  Could not connect to http://<MYSite>/<MYApp>/<MYService>.svc. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond x.x.x.x:80.

I can reproduce this error with about 20% reliability if I execute the exact same page request on the client from 2 browsers at the same time.  When the problem occurs, the successful p

Modifying connection String in Web config using Install Wizard

  

Hey,

Im trying to create a Web Deployment Project, the built in setup and deployment is very good in Visual Studio, i need to able to add an additional step in the setup to change the connection string in the Web config file. Ive seen a lot of articles on how to do this and in particular this http://weblogs.asp.net/scottgu/archive/2007/06/15/tip-trick-creating-packaged-asp-net-setup-programs-with-vs-2005.aspx#7162670 I am however stuck on the final part of this tutorial, im using the code Scott provided but have two errors,  heres part of my code where the errors are



using System;
using System.Configuration;
using System.Configuration.Install;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.DirectoryServices;

 void ConfigureDatabase(string targetSite, string targetVDir, string connectionString)
        {
            // Retrieve "Friendly Site Name" from IIS for TargetSite
            DirectoryEntry entry = new DirectoryEntry("IIS://LocalHost/" + targetSit

About WAP and MSSQL Connection

  

Is it possible to create a wap having a mssql connection?


Can you give me some sample code? thanks


A connection could not be made to the report server http://localhost/ReportServer.

  

Hi,

  • I created a Report using Business Intelligence Studio. Its working working well, i can able to view records. But when i try to deploy the report an error occurs specifying that "A connection could not be made to the report server http://localhost/ReportServer. (Microsoft Report Designer)".
  • I open the IIS 7 and find out virtual directories "Reports" and "ReportServer" are available.
  • I check on the browser and type "http://localhost/reports".  I find the browser direct to this url: http://localhost/reports/Pages/Folder.aspx and find error specifying the following one:

         Error:The report server is not responding. Verify that the report server is running and can be accessed from this computer.

  • when i type http://localhost/reportmanager, i found the error:

    HTTP Error 404.0 - Not Found

    The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

    <

SOA Tips: Address Scalability Bottlenecks with Distributed Caching

  

SOA makes application scalability easier, but getting the best performance out of your SOA means paying close attention to the details. We'll give you some tips for coding your app more effectively and using distributed caching to remove data access bottlenecks.

Iqbal Khan

MSDN Magazine June 2010


Toolbox: Distributed Caching, Object-Object Mapping, Blogs and More

  

This column covers Web application performance with distributed caching, a utility for object-object mapping, and a look at interesting blogs.

Scott Mitchell

MSDN Magazine September 2009


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