Web Parts Connection Problem

.NET
1

Hello !

I am using ASP.NET 3.5 and SQL SERVER 2008. And I have a very simple code within my ASP.NET page :

<asp:WebPartManager ID=“WebPartManager1” runat=“server” >

    &lt;/asp:WebPartManager&gt;
    
    &lt;asp:WebPartZone ID="WebPartZone1" runat="server"&gt;
    &lt;ZoneTemplate&gt;
    ... ... ...
    &lt;/ZoneTemplate&gt;
    &lt;/asp:WebPartZone&gt;
&lt;asp:WebPartZone ID="WebPartZone2" runat="server"&gt;
 &lt;ZoneTemplate&gt;
    ... ... ...
    &lt;/ZoneTemplate&gt;
&lt;/asp:WebPartZone&gt;

I did use webparts in ASP.NET 2.0 and Sql Server 2008 and there I did not have any problem like this. But This time I have this error when I try to run my project using ASP.NET Development Server.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

SQLExpress database file auto-creation error:

The connection string specifies a local Sql Server Express instance using a database location within the applications App_Data directory. The provider attempted to automatically create the application services database because the provider determined that the database does not exist. The following configuration requirements are necessary to successfully check for existence of the application services database and automatically create the application services database:

If the applications App_Data directory does not already exist, the web server account must have read and write access to the applications directory. This is necessary because the web server account will automatically create the App_Data directory if it does not already exist.
If the applications App_Data directory already exists, the web server account only requires read and write access to the applications App_Data directory. This is necessary because the web server account will attempt to verify that the Sql Server Express database already exists within the applications App_Data directory. Revoking read access on the App_Data directory from the web server account will prevent the provider from correctly determining if the Sql Server Express database already exists. This will cause an error when the provider attempts to create a duplicate of an already existing database. Write access is required because the web server accounts credentials are used when creating the new database.
Sql Server Express must be installed on the machine.
The process identity for the web server account must have a local user profile. See the readme document for details on how to create a local user profile for both machine and domain accounts.

Full Read/Write Access is provided for the [App_Data] Folder.
Can anyone help me?

Thanks

2

Can anyone help me?

3

Have you double checked your connection string? It looks like it cannot even find your sql server…
Also, within sql management studio, right-click the server instance you are trying to connect to, go Properties, select Connections, and see if the Allow remote connections box is checked

4

It is already checked.

The same project was running in my machine when there were VS.NET 2005 and SQL Server 2005.
Now these have been upgraded to VS.NET 2008 and SQL Server 2008.

5

<connectionStrings>

<remove name=“LocalSqlServer” />

&lt;add  name="LocalSqlServer"

connectionString=“Data Source=localhost;Integrated Security=false;Initial Catalog=WebPartsDatabase;User ID=sa;Password=sa”
providerName=“System.Data.SqlClient” />

</connectionStrings>

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727 aspnet_regsql.exe
Providing Permission on “WebPartsDatabase” From aspnet_regsql.exe
Solves the problem.

Thanks