Tài liệu Creating a DataSet Object Using Visual Studio NET docx

... Creating a DataSet Object Using Visual Studio .NET In this section, you'll learn how to create a DataSet using Visual Studio .NET. N ote You'll find a completed VS .NET example ... sqlDataAdapter1.Fill (dataSet1 1, "Products"); sqlConnection1.Close(); System.Data.DataTable myDataTable = dataSet1 1.Tables["Products"]; forea...

Ngày tải lên: 21/01/2014, 07:20

... Creating a Command Object Using Visual Studio .NET To create a SqlCommand object using Visual Studio .NET (VS .NET) , you drag a SqlCommand object from the Data tab of the Toolbox ... named MyDataReader containing a Windows application. 2. Add a SqlConnection object to your project (refer back to the previous chapter to see how to add a SqlConnection...

Ngày tải lên: 21/01/2014, 07:20

... Creating a Connection Object Using Visual Studio .NET To create a SqlConnection object using Visual Studio .NET, you drag a SqlConnection object from the Data tab of the Toolbox ... You'll recall that a SqlConnection object allows you to connect to a SQL Server database. You can also drag an OleDbConnection object from the Toolbox to your form to conn...

Ngày tải lên: 21/01/2014, 07:20

... Creating a DataAdapter Object Using Visual Studio .NET In this section, you'll learn how to create a DataAdapter using Visual Studio .NET. N ote You'll find a completed VS .NET ... the Data Adapter Configuration Wizard. Figure 10.12: Final dialog box for the Data Adapter Configuration Wizard Click the Finish button to complete the Wizard. A SqlDataA...

Ngày tải lên: 21/01/2014, 07:20

... File: AutomaticRefreshDataSetForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Threading; using System.Data; using System.Data.SqlClient; ... second, and a period of one second. Update Button.Click Uses a DataAdapter to update changes made to the first DataTable back to the data source. CheckRefreshDataSet( ) This method...

Ngày tải lên: 14/12/2013, 18:16

... ForeignKeyConstraint. • parentDataTableName is the name of the parent DataTable. • parentDataColumnNames and childDataColumnNames contain the names of the DataColumn objects in the parent and child DataTable ... in the parent DataTable. • childDataColumn and childDataColumns are the DataColumn objects in the child DataTable. • constraintName is the name you want to assign to the Constr...

Ngày tải lên: 21/01/2014, 07:20

... Creating a SqlCommand Object There are two ways you can create a SqlCommand object: • Use one of the SqlCommand constructors. • Call the CreateCommand() method of a SqlConnection object. ... SqlConnection object. mySqlTransaction is your SqlTransaction object. Before you use a SqlCommand object you first need a SqlConnection object, which is used to communicate with...

Ngày tải lên: 21/01/2014, 07:20

... contains the basketball graphic, which is a movie clip instance appropriately named basketball_mc. We'll be looking at this instance's timeline in a moment because it plays a part ... three layers: Shadow, Graphic, and Sound. The Shadow and Graphic layers contain a couple of tweens to emulate the look and movement of a bouncing basketball. The Sound layer simply contai...

Ngày tải lên: 21/01/2014, 13:20

... SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet( ); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet); mySqlConnection.Close(); myDataSet.Tables["Table"].TableName ... the DataColumn of a DataTable, the D ataColumn value in each DataRow object in the DataTable must be unique. The final example retrieves the constr...

Ngày tải lên: 26/01/2014, 07:20

... Using a DataReader Object in Visual Studio .NET You can't visually create a DataReader object in Visual Studio .NET (VS .NET) ; you can only create them using program statements. ... the object returned by the SqlDataReader object to a string. Also notice you include the namespace when referencing the SqlDataReader class: you use System.Data.SqlClient .SqlD...

Ngày tải lên: 07/11/2013, 10:15