And best of all the DataTables returned by the TableAdapter can be bound to ASP.NET data Web controls, such as the GridView, DetailsView, DropDownList, CheckBoxList, and several others. He can be reached at mitchell@4GuysFromRolla.com. Figure 33: Inspect the Auto-Generated Code by Selecting Go To Definition from the Class View. If checked, the final checkbox, "GenerateDBDirectMethods," creates Insert(), Update(), and Delete() methods for the TableAdapter. If you don't want to use any of the SQL Server options, you can always download a Microsoft Access version of the Northwind database file and drop into the App_Data directory. You'll be returned to the Add connection dialogue box. This object reads the database and creates an in-memory copy of that part of the database that your program needs. To accomplish this, adjust the InsertProduct method's ExecuteMode property to Scalar. For example, the DataReader and the DataSet (by default) are loosely-typed objects since their schema is defined by the columns returned by the database query used to populate them. We did not have to instantiate any ADO.NET classes, we didn't have to refer to any connection strings, SQL queries, or stored procedures. ", " You Software name ", MessageBoxButtons.OK, MessageBoxIcon.Information) ElseIf … The Designer for the Typed DataSet will then be displayed, and the TableAdapter Configuration Wizard will start, allowing you to add your first TableAdapter to the Typed DataSet. Provides links to pages explaining how to send updated data from an application to the database. This can present a problem, however, as the TableAdapter's methods for inserting, updating, and deleting data are based off of this initial method. download a Microsoft Access version of the Northwind database file, downloading the SQL Server 2000 version of Northwind and installation script, Designing Data Tier Components and Passing Data Through Tiers, Build a Data Access Layer with the Visual Studio 2005 DataSet Designer, use SCOPE_IDENTITY() in lieu of @@IDENTITY, Building a DAL using Strongly Typed TableAdapters and DataTables in VS 2005 and ASP.NET 2.0, Encrypting Configuration Information in ASP.NET 2.0 Applications, Using Strongly-Typed Data Access in Visual Studio 2005 and ASP.NET 2.0, Retrieving Scalar Data from a Stored Procedure, Data Access Layers in ASP.NET Applications, How to Manually Bind a Dataset to a Datagrid, How to Work with Datasets and Filters from an ASP Application, A BoundField that displays the name of each supplier, and, A TemplateField that contains a BulletedList control that is bound to the results returned by the. With Visual Studio, creating a DAL based on Typed DataSets is a task that can be accomplished in 10-15 minutes without writing a line of code. We can accomplish this by creating a query that returns all columns and all rows from the Products table: Figure 8: Enter the SQL Query Into the Textbox (Click to view full-size image). The following page uses a GridView control with two fields: We'll examine how to display such master-detail reports in future tutorials. Select the DataSet option from the list of templates and name it Northwind.xsd. For example, with this pattern for the Products table the delete method would take in an integer parameter, indicating the ProductID of the record to delete, while the insert method would take in a string for the ProductName, a decimal for the UnitPrice, an integer for the UnitsOnStock, and so on. The following example shows all products that are in the Beverages category, which have a CategoryID of 1. SQL Select This example will use the SQL Select statement to open a recordset: Dim rs As Recordset Set rs = CurrentDb.OpenRecordset("select *… After verifying the advanced options, click Next to proceed to the final screen. I have 6.1. phone wrote: I have to create ms access database and a table in it using adodb in vb.net by using some SQL queries. These parameterized queries can be tested directly from the DataSet Designer. Click on the View menu and select Server Explorer. Figure 12: The Products DataTable and ProductsTableAdapter have been Added to the Typed DataSet (Click to view full-size image). Once you have the database installed, go to the Server Explorer in Visual Studio, right-click on the Data Connections node, and choose Add Connection. Now look for Microsoft ActiveX Data Object Library. LINQ to SQL Tools in Visual Studio A strongly-typed object is one whose schema is rigidly defined at compile time, whereas the opposite, a loosely-typed object, is one whose schema is not known until runtime. We can use an ad-hoc SQL statement, create a new stored procedure, or use an existing stored procedure. You can view this schema information by right-clicking on the Northwind.xsd file in the Solution Explorer and choosing View Code. 1. There are two patterns commonly used for inserting, updating, and deleting data. Accessing Data in Visual Studio. Provides links to topics about how to create a LINQ to SQL object model in applications. If you do not have a SQL Server 2000 or 2005 database server to connect to, or you simply want to avoid having to add the database to a database server, you can use the SQL Server 2005 Express Edition version of the Northwind database that is located in the downloaded website's App_Data folder (NORTHWND.MDF). Augment this query by adding SELECT SCOPE_IDENTITY() at the end of the query, which will return the last identity value inserted into an IDENTITY column in the same scope. Provides links to pages on creating applications that work with data, using Visual Studio. These tutorials are geared to be concise and provide step-by-step instructions with plenty of screen shots to walk you through the process visually. When you specify a data source for the DataGridView, by default it will construct columns for you automatically. In either case, this approach tightly couples the data access logic with the presentation layer. The first pattern, which I'll call the database direct pattern, involves creating methods that, when invoked, issue an INSERT, UPDATE, or DELETE command to the database that operates on a single database record. New project has been created the first tutorial, so fire up Visual Studio 2005, Visual web Developer Sub... 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