... result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is also known as share-level ... those defined by ADO.NET. To open adatabase secured by a Microsoft Access database password, use the Jet OLEDB :Database Password attribute in the connection string to specify the password. This ... security. A password does not allow groups or users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The Set Database command from...
... Team LiB ] [ Team LiB ] Recipe 1.4 Connectingtoa Secured Access Database Problem You want to connect toa Microsoft Access database that has been secured with user-level security and ... database. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection toa Microsoft Access database secured with user-level security and a workgroup ... defined by ADO.NET. To open adatabase secured by Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in the connection string to specify the path and filename of...
... Create a SQL SELECT statement referencing a worksheet or a range in an Excel workbook and execute the statement to fill a DataSet using a DataAdapter or to create a DataReader. For example: ... INSERT INTO [MySheet$] (Field1, Field2, Field3) VALUES ('testdata', 1.234, '09/28/1979'); Retrieve data Use either a DataAdapter or a DataReader to retrieve data from an Excel ... 1-2. Example 1-2. File: ExcelForm.cs // Namespaces, Variables, and Constants using System; using System.Configuration; using System.Data; private OleDbDataAdapter da; private DataTable...
... ConfigurationSettings.AppSettings["Sql_Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port other than ... need to understand what a SQL Server or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to ... [ Team LiB ] Recipe 1.7 Connectingtoa Named Instance of SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect toa named instance of a SQL Server or Microsoft Data Engine...
... provider can read records from and insert records into a text file data source. The Jet database engine can access other database file formats through Indexed Sequential Access Method (ISAM) drivers ... data adapter to retrieve all rows from text file. The MaxScanRows option indicates how many rows should be scanned to automatically determine column type. A value of 0 indicates that all rows ... provider to access data in a text file. The sample code creates an OleDbDataAdapter that uses the Jet OLE DB provider to load the contents of the text file Categories.txt, shown in Example 1-13,...
... demonstrates how to store XML data in a text field of adatabase table and subsequently read it into an XmlDocument using the LoadXml( ) method. Standard database access techniques using a DataAdapter ... sender, System.EventArgs e) { DataSet ds = new DataSet( ); // Fill the Categories table and add it to the DataSet. SqlDataAdapter da = new SqlDataAdapter("SELECT TOP 3 * FROM Orders", ... da.SelectCommand.Connection); da.UpdateCommand.CommandType = CommandType.Text; da.UpdateCommand.Parameters.Add("@Id", SqlDbType.Int, 0, "Id"); da.UpdateCommand.Parameters.Add("@XmlField",...
... Server and a DataSet object. You'll learn the details on how to pull rows from the database into a DataSet in Chapter 10, and how to push changes made in a DataSet to the database in Chapter ... property, as shown in Figure 6.11. Using a DataGrid Control to Access aDatabase In this section, you'll learn how to use a DataGrid control to access the rows in adatabase table. Follow ... you'll add a SqlConnection object and a SqlDataAdapter object to your form. Note You use a SqlConnection object to connect toa SQL Server database, and a SqlDataAdapter object to move rows...
... 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 ... databaseto be established when there's a suitable connection already available. When you close a connection, that connection isn't actually closed; instead, your connection is marked as ... System.Data; using System.Data.SqlClient; class ConnectionPooling { public static void Main() { // create a SqlConnection object to connect to the database, // setting max pool size to...
... class. The following example defines a method named StateChangeHandler to handle the StateChange event. You'll notice that the second parameter to this method is a StateChangeEventArgs ... request to the database; two examples of states are open and closed. You use the Connection object's State property to get the current state of the connection to the database. The State property ... SqlConnection("server=localhost ;database= Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler);...
... configuration file named TNSNAMES.ORA to locate the Oracle database and determine how to connect to it based on the Data Source or Database attribute in the connection string. An example of an entry ... Oracle Button.Click Creates and opens a connection to an Oracle database using the Oracle .NET data provider. Information about the database is displayed from the properties of the OracleConnection ... to an Oracle database. Solution You can connect to an Oracle database using either the Oracle .NET data provider or the OLE DB .NET data provider. The sample code contains two event handlers:...
... Between the Strategic Plan and the Operational Plan 213Analysis of Company Performance 214Analysis of Competition 215Analysis of Market and Market Share 216Analysis of Mission 217Analysis of ... performance that must betracked against the business plan. They are organizational, team,and individual. All lead to the strategic goals.Figure 12-4. During the sustaining phase you must pay attention ... is a fantasy tale, thereare important messages that we can translate into your businessplanning. THETHREEREASONSCOMPANYSTORIESFALLSHORT OFEXPECTATIONSThe company story is a...
... wake at 6 a. m., but nap for two hours or so in the early afternoon. Thus the influence on one's sleep pattern is worthy of consideration when choosing an occupation....