Under Visual Studio installed templates, click ASP.NET Web Site.Ĭlick Local IIS, and then click Default Web Site.Ĭlick the create new Web application icon ( ), and then name the new Web application AccessSample. ![]() Otherwise, create a new Web site and page by following these steps. If you have already created a Web site in Visual Web Developer by completing Walkthrough: Creating a Basic Web Page in Visual Web Developer, you can use that Web site and go to the next section. This lets you test that the Web site has adequate user rights to use an Access database in a production environment. Optionally, Microsoft Internet Information Services (IIS) installed locally on the computer. To download the current MDAC version, see the Data Access and Storage Developer Center. However, if you using Microsoft Windows 2000, you might to have to upgrade the MDAC version that is already installed on the computer. If you are using Microsoft Windows XP or Windows Server 2003, you already have MDAC 2.7. Microsoft Data Access Components (MDAC) version 2.7 or later. mdb file and adjust the steps in the walkthrough to match the tables that you are using. ![]() The Northwind.mdb file that contains the Access version of the sample Northwind database.Īlternatively, you can use another Access. In order to complete this walkthrough, you will need the following: However, if the Web site will support more throughput or a larger number of users, you should consider using SQL Server or another database that is suited for production Web sites. Generally, if you are creating a Web site that will support only light traffic or a limited number of users, an Access database is sufficient. This walkthrough shows you how to work with data in a Microsoft Access database (.mdb file).ĭuring this walkthrough, you will learn how to do the following:Ĭonnect to the database that has an AccessDataSource control.Īccess databases do not have the same capacity and are not as scalable as other types of databases, such as Microsoft SQL Server. 'Explicitly close the Recordset and QueryDef objects.Using the Microsoft Visual Web Developer Web development tool, you can create Web pages that work with data from a variety of sources, including databases, XML files, and business objects. "The first field in the query is " & qd.Fields(0).Name MsgBox "The Invoices query definition is open." & vbCrLf & _ MsgBox "The Employees Recordset is open." & vbCrLf & _ Rs.MoveLast 'Move to the last record in the Recordset. Set rs = db.OpenRecordset("Employees", dbOpenTable) The following sample code opens and closes a Recordset and a QueryDef object, and displays both Recordset and QueryDef information within message boxes. To do so, click References on the Tools menu in the Visual Basic Editor, and make sure that the Microsoft DAO 3.6 Object Library check box is selected.Ĭopy the following code to a new module. For this code to run properly, you must reference the Microsoft DAO 3.6 Object Library. NOTE The sample code in this article uses Microsoft Data Access Objects. The following steps show you how to use DAO to close a Recordset or QueryDef object. ![]() However, if you explicitly close the object in your code, you can avoid occasional instances when the object remains open. Microsoft Access automatically closes Recordset and QueryDef objects under most circumstances. When you create a Recordset (or a QueryDef) object in code, explicitly close the object when you are finished. If the database has increased in size because you did not use the Close method of the Recordset object, you can reduce the size of the database by running theĬompact and Repair utility (on the Tools menu). To avoid consuming unnecessary resources and increasing database size, use the Close method of the Recordset object to explicitly close the recordset's memory when you no longer need the recordset. If you do not release a recordset's memory each time that you loop through the recordset code, DAO may recompile, using more memory and increasing the size of the database. SymptomsĪ Microsoft Access database has begun to bloat (or grow rapidly in size) after you implement Data Access Objects (DAO) to open a recordset. This article applies only to a Microsoft Access database (.mdb). Moderate: Requires basic macro, coding, and interoperability skills.
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