ASP.NET DataGrid Problem

Hi,

As a relative newbie to SQL Server/ASP.NET I'm hoping someone here
can help with my problem. I'm developing a timesheet application in
ASP.NET C# using Visual Studio 2003 with a database built in MSDE.
One of my forms needs to return a simple list of resources from my
database. I have followed the guide on the MSDN libraries, but for
some reason I continuously get the same error message.

What I've done so far is Create the database, tables, and populate
with some sample data using using Server Explorer in Visual Studio. I have
connected to the database (using integrated security) and I am
trying to get the contents of the Resource table to appear on my
form. I have then created a DataAdapter (tested the connection, set
the SQL as a simple SELECT * from Resource, etc), which also generates an sqlConnection for me. To test this I have previewed the generated data, and it returns what I want, so I
have chosen to generate a DataSet of this. I am then trying to get
this data into a simple DataGrid. On the properties of the DataGrid
I have changed the DataSource to point at my Dataset. As I
understand it, I then have to add the following to my Page Load
section of my code.

sqlConnection1.Open();
this.sqlDataAdapter1.Fill(this.dsResource);
DataGrid1.DataBind();
sqlConnection1.Close();

The form builds fine, but when I browse to the particular form I get
the following error for the sqlConnection1.Open(); line. If I remove this line the error simply moves to the line below.

Exception Details: System.Data.SqlClient.SqlException: Cannot open
database requested in login 'SCMS'. Login fails. Login failed for
user 'AL-NOTEPAD\ASPNET'.

To me this is an error with my connection string. My database
instance is actually 'AL-NOTEPAD\VSDOTNET'. However the properties
for sqlConnection1 are pointing to the correct datasource. I do not
know why the application is looking for user 'AL-NOTEPAD\ASPNET'. It does not exist, to my knowledge. Do I need to grant access to this user? If so, how would I do it? Bearing in mind I am using MSDE, and do not have Enterprise Manager.

Any help with this would be greatly appreciated, as I get the same
error with my code for forms-based login...

Thanks in advance..

Hi there, welcome to the ASP.NET Forums!

The root of the problem is that Visual Studio will use *your* credentials to log in to the SQL Server and access the database when you are using integrated security. However, when you run the site through a web server, it will use the ASPNET account. And, as you are experiencing, the ASPNET account does by default have those needed permissions.

To solve this problem, you have 2 options. You can use impersonation in your web.config, so that your web application will impersonate whatever user you desire (which presumably has permissions to your SQL Server and database). Or, you can grant the needed permissions to the ASPNET account.

Seethis post for instructions on how to grant the needed permissions to the ASPNET account.|||

Hi,

Thanks for all the help, I've sorted the problem in the short term by
downloading an MSDE alternative to Enterprise Manager
(http://www.asql.biz/DbaMgr.shtm) and assigned the relevant access to
the ASPNET user account. The DataGrid now works.

Thanks again

Al