C# - Establish Connection Between 2 Computers On Internet
Dec 28, 2010
I am having a domain name and web space (the web is running, its ASP.net 3.5). I am working on a project in which I need to connect 2 computers over the internet.
Is it possible to do that with a simple ASP.Net website? What other things I do need to do this?
EDIT
Actually I want to send the data from one computer to another in real time, I mean as we do chatting we exchange text to one another. The same thing I want to achieve.
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Jun 15, 2010
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Nov 15, 2010
I would like to objectively measure the connection speed and quality beetween few hosts in one country and a server located in the other country.
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Nov 9, 2010
web.config file. when i go to test connection, i get this errorCould not establish a connection to the database.f you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the providerCan someone help me pls i am trying to deploy it to the remote server. Here is the codes:
<configuration>
<connectionStrings>
<add
name="ApplicationServices"
[code]...
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Mar 23, 2010
Does anyone know how do i establish a connection through this platform(aspx.vb) with another computer if LAN connection are the only option. Hope some kind soul can guide me through and if possible provide some example so that i can study on it.
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May 21, 2010
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May 20, 2010
I have run aspnet_regsql.exe beaucoup times and it creates the database aspnetdb.db. I have created it in my primary database connection and in the SQLExpress connection.
Then I open Visual Studio 2008 and run the ASP.net Web Site Configuration Tool. I click on Provider tab and select Select a single provider for all site management data. The provider shown is AspNetSqlProvider. A book that I'm reading says it should be aspnetdb.
When I click on the test link, I get the following message
Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
In my book, it looks like the aspnetdb database should appear in the app_Data folder of my web site. What is supposed to put it there? Does it get moved from the SQL Server Data folder?
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Dec 16, 2010
I've created an ASP.Net 4.0 web application. It uses Forms Authentication. I have an ASPNETDB.mdf file in my App_Data folder courtesy of SQLEXPRESS. I have appropriate settings in my web.config for connection strings and providers (since I know it will be asked for:
<add name="ApplicationServices" connectionString="data source=.SQLEXPRESS;Integrated Security=SSPI;
AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient"/>).
I have roles and users setup. I have been running this with absolutely no problems in both my dev environment (i.e. Cassini) and on a "production" (not really, but a machine that was published to). And the "production" machine still has no problems.
So, everything has been working perfectly fine until early this afternoon and all of a sudden it all stopped. The only things I did from when it worked until it stopped was: I connected to and checked in all my code to a TFS server (2010) and then I updated namespaces all around. I have not made any changes to my web.config since it worked, nor to the database. I'm really not sure what happened. Oh, and the "production" machine never got the namespace updates. But, it did get a publish immediately before I uploaded everything into TFS.
It started with me getting a login failure in my app. I know the login is correct (it still works on the published system). So, I went into the Website Admin Tool and clicked onProvider Configuration -> Select a single provider... -> Click on Test next to AspNetSqlProvider (only option). I get back an error: "Could not establish a connection to the database." So, this tells me that for some reason, it can't see my database. All my roles and users still show up though in Security.
Since these two actions, I have wiped out all my code locally and refreshed from the first changeset in TFS. Still no workie. I still get the "Could not establish..." in WAT. Every post I can find online keeps talking about connectionStrings and database configuration (i.e. aspnet_regsql). However, since this was just working with no issues, I'm pretty sure none of these are my problem. Especially since I refreshed my code to an earlier "working" state (prior to namespace changes) to no effect.
I am not yet at the point that I'm willing to wipe my database and start over. Again, because this was working before. I have noticed and read several posts by Sukumar Raju among others (including his blog posts, one here) and none of them helped or were quite related to my specific issue. Good information, but not what I needed.
I'm sure something went offline somewhere and I can't see it. I did check to make sure that the SQLEXPRESS services (including Browser, etc.) were started. Even restarted them to no avail. I'm sure it has to be something simple and I'm just missing it somewhere.
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Jan 31, 2010
Could not establish a connection to the database. If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
I don't know where to go next as this error message does't give many leads. I have already configured that database with the aspnet_regsql tool. In SQL Mngt. Studio I can see that the database aspnetdb has been created. I'm not sure where to go from here. The only connection string in my web.config file is the one for connecting to my content database.
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Jun 25, 2010
I have hosted a webservice in my server and i need to access the same in a web aplication and smart device project . Added the same in both solutions its working fine in a webapplication. But in smart device project we added the web reference and while deploying we are getting an error
"Could not establish connection to network"
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Jan 9, 2010
Currently I'm learning on one of Joe Stagner video "SEC-009-CreateMembershipSchema" I followed exactly as told except for that Joe's is building the database in his JoeStagner server and not JoeStagnerSQLEXPRESS. But in my case I built my database in my MACHINENAMESQLEXPRESS. Another different thing is Joe's using SQL Management 2005 and I'm using the free version of SQL management 2008.
So I followed every step, inch by inch but when I tried to run a test on the AspNetSqlProvider, I'm getting this error Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
here's the connection string I added in just like in Joe's video
<connectionStrings>
<remove name="LocalSqlServer" />
<add name="LocalSqlServer" connectionString="data source=.SQLEXPRESS;DataBase=AspNetServicesDB;Uid=AspNetServicesUser;Pwd=password"/>
</connectionStrings>
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Apr 1, 2010
I'm having a problem, which I haven't had with other projects, in setting up membership. I have set up a aspnetdb database using the asp.net confirguration tool. The database is in the app data folder and I can set up users and roles etc from the web site administration tool. However, trying to log in within the application, using the login control I get "Login attempt was not successful".
I have noted the following :-
1. On the home page of the Web site administration tool the application:/ shows no application where as normally it would show the name of the application.
2. Clicking the AspNetSqlProvider test button, I get the error "could not establish a connection to the database"
3. Although various lines have been added to the web config file, no connection string has been created to the aspnetdb file in the app data folder.
4. If you right click on the aspnetdb file within the solution explorer, there is an option of "include in project". Selecting this doesn't however solve the problem.
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Apr 15, 2010
I have sql server 2008 express edition. I'm trying to use the wsat to set up the provider but I keep getting the error:
Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
[code]....
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Feb 28, 2010
I m getting error while running page(.aspx)
"Login failed for user 'HOME-D6A8A84CE4ASPNET'." and at the same time i m also getting error
Firefox can't establish a connection to the server at localhost:1452.
although the the pages(website was running properly as before)
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Aug 25, 2010
I have a question with this tool. I have a database listed in the App_folder, and the database has a connection in Server explorer. The connection string is listed in the web.config file, and I am able to add users and roles with the Web Admin Tool. However,when in the Web Admin Tool, under Configuration tab, I receive an error when I click on the "test" button. The error reads " Could not establish a connection to the database.If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider."
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Oct 5, 2010
Getting error: "Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider."
I am not usign SQL Express
1. Installed VS2008 + sp1 after that Installed SQL 2008 Standard x86 + sp1
2. Used aspnet_regsql to add aspnetdb to the sql (I can see that db in MSSMS)
3. From my WebProject I can access WSAT but when I click on the Provider and try to test I am getting above error.
Tried diffetent settings in the web.config and also check machine.config Check different solutions form different forums but nothing seams to work.
I strongly believe there is something wrong with my <connectionString/> as by default WSAT points to .SQLEXPRESS but I do not know which file should I update (web.config or machine.config or Web.config)
Do I need to add <connectionStrig> tag to web.config ?
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Sep 6, 2010
IIS 6 installed on Vista (Virtual PC) not member of domain, Visual studio 2008 based website. Active Directory Membership configured in web.config.
Trust level set to Full. Using Login control to authenticate.
[Code]....
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Nov 15, 2010
I am building a web site and am trying to run the web site administration tool.
I have reinstalled SQL Server 2008 express and have run the command line administration utilites. When I try to run the administration tool, get the following error when I click on the security tab is
Failed to generate a user instance of SQL Server due to a failure in starting the process for the user instance. The connection will be closed.
I have ensured that I have user instances are enabled
When I click on Choose Data Store I get the following error
Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
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May 14, 2010
I am using sqlserver express 2008 (Microsoft Web Platform Installer) and visual studio 10 professionnel.
I am also using last Silverlight4_Tools.exe.
When i enter in Web Site Administration Tool / security I obtain this error
There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store.
The following message may in diagnosing the problem:
Failed to generate a user instance of SQL Server due to a failure in starting the process for the user instance. The connection will be closed.
When I try userprovider
Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
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Nov 3, 2010
I cannot get a successful connectiong to the active directory when logging onto a web form. Here is the code I have in the web.config:
<configuration>
<appSettings/>
<connectionStrings>
[code]...
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Jul 23, 2010
We're having an error similar to the one detailed here. We get the error noted above when trying to do AD authentication from our .net (3.5) mvc 2 app. This is our first .net mvc app ...
http://forums.asp.net/t/1161047.aspx
- We are re-using a forms auth library written for a .Net 2 app
- that library/app/config used a service account with min. privileges for binding to AD
- This error occurs in VS 2008, have not tried deploying the app to a server yet (a little early for that)
- like the other user at the previously referenced thread, I can get the 'unable to establish ...' error to go away and display the log on page by putting *MY* credentials in instead of the service account (but not successfully authenticate)
- moving the service account into the same AD OU as my account does not seem to change it ... only using my account credentials does.
- trust level is set to full
Is this some odd permissions trick that is new with .Net 3.5 (even though the ADmembershipProvider is still a 2.0 libary)? This should have nothing to do with MVC itself.
Config looks like this (very standard, like every one else's)
[Code]....
The line/portion highlighted in the debug/stacktrace is:
type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
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Aug 9, 2010
In my web.config I have:
[Code]....
If I just have ADProvider1 it works, when I add ADProvider2, even though for testing I only use ADProvider1 I get an error: "Unable to establish secure connection with the server" Am I adding the second provider to the membership section incorrectly?
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Apr 15, 2010
iam using c#,asp.net and iis, i want to simulate slow internet connection on my pc for testing my app. is it possible i can control bandwidth of iis. System.Threading.Thread.Sleep(someDuration); in c# file.
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Jun 21, 2010
i have few variable in login page that is read from db.If the internet connection is loss suddenly during read process, my frst page is not able to be loaded and show to user.I am thinking to have this page show when internet connection lost. Is it possible to do so?The page is shown as the picture below :
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Jun 23, 2010
I am having problem in diffrentitate error between internet connection loss error and Other Error in query for example: duplicate record found.
Both the error fall into System.Data.SqlClient.SqlException category.
But the way to handle both this 2 error is different.For connection error , i need to bring user to connection loss page while for duplicate record found error, i need to show the user a pop up.
Unless i do a checking exactly on the error message , else i have no ways to differentiate connection loss error and any other error. Am i correct for this?
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