tailieunhanh - Connecting to an Access Databasefrom ASP.NET

[ Team LiB ] Recipe Connecting to an Access Databasefrom Problem You know your connection string is correct, but still can't connect to your Microsoft Access database from your application. What are the differences between connecting from a Windows Forms | Team LiB Recipe Connecting to an Access Databasefrom Problem You know your connection string is correct but still can t connect to your Microsoft Access database from your application. What are the differences between connecting from a Windows Forms .NET application and an application Solution You must grant the necessary file permissions for accessing a Jet database Microsoft s transparent data access engine to the default user account used by . Discussion When a user retrieves a page from an web site code runs on the server to generate and deliver the page. By default IIS Internet Information Server uses the system account to provide the security context for all processes. This account can access the IIS computer but is not allowed to access network shares on other computers. To allow an application to connect to a Microsoft Access database IIS must be configured to use an account other than the system account. The new account must be configured to have permission to access all files and folders needed to use the Access database. If the Access database is on a remote computer the account also requires access to that computer. The following sections describe how to configure the IIS Server and the Access computer to allow to connect to an Access database. Configure IIS The system account cannot authenticate across a network. Enable impersonation in the file for a given application so that impersonates an account on the Microsoft Access computer with the required access permissions to the Access database. For example identity impersonate true userName domain username password- myPassword This method stores the username and password in clear text on the server. Ensure that IIS is configured to prevent users of the web site from viewing the contents of the file this is the default configuration. Other ways to impersonate a user from an ASP page are described in the .