A Shared Object Hierarchy
A Shared Object Hierarchy
... updates are propagated to other
processes that have cached the updated object. The basic idea is to propagate updates
through the shared database. When a process retrieves an object, a database ... Each application process is
connected to a database process that manages the shared database. The application pro-
gram is presented a conventional view of the object hierarchy. As...
Using a DataReader Object in Visual Studio .NET
...
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.
In ... sqlConnection1.Open();
System.Data.SqlClient.SqlDataReader mySqlDataReader =
sqlCommand1.ExecuteReader();
while (mySqlDataReader.Read())
{
listView1.Items.Add(mySqlDataReader["Cu...
Using a SqlConnection Object to Connect to a SQL Server Database phần 1
... ADO.NET automatically stores database connections in a pool. Connection
pooling offers a great performance improvement because you don't have to wait for a
brand new connection to the database ... can pass your username and
password to SQL Server and use those credentials to connect to the database. This saves
you from providing a separate username and password to SQL Server....
Tài liệu Using a SqlConnection Object to Connect to a SQL Server Database phần 2 doc
... second parameter is an object of a class that is derived from the System.EventArgs
class. The EventArgs class is the base class for event data and represents the details of the
event. In the case ...
represents the object that raises the event.
Note The System .Object class acts as the base class for all classes. In other words, all
classes are ultimately derived from the System...
Tài liệu Writing and Reading XML Using a DataSet Object ppt
... "ORDER BY CustomerID";
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
DataSet myDataSet = new DataSet();
mySqlConnection.Open(); ... "ORDER BY CustomerID";
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
DataSet myDataSet = new DataSet();
mySqlConnecti...
Tài liệu Creating a Command Object Using Visual Studio .NET docx
...
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 ... project 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 object...
Tài liệu Creating a Connection Object Using Visual Studio .NET pdf
... 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 connect to a database ... SqlConnection objects. Other
objects that appear in the tray are SqlCommand objects. These objects are considered
nonvisual because you don't see them when you run your form. You...
Tài liệu Creating a DataAdapter Object Using Visual Studio .NET doc
... 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 SqlDataAdapter object named ... form. When you drag a SqlDataAdapter object to your form, you
start the Data Adapter Configuration Wizard, as shown in Figure 10.8
.
Figure 10.8: The Data Adapter Configuration Wizard...
Tài liệu Creating a DataSet Object Using Visual Studio .NET docx
... sqlDataAdapter1.Fill(dataSet11, "Products");
sqlConnection1.Close();
System.Data.DataTable myDataTable =
dataSet11.Tables["Products"];
foreach (System.Data.DataRow myDataRow in myDataTable.Rows) ... form, and add
code to your form to fill it using the Fill() method of a DataAdapter object.
• Click the Generate Dataset link at the bottom of the Properties windo...
Tài liệu Creating a ForeignKeyConstraint Object doc
... 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...
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