... idTextBox.Clear( ); xmlTextBox.Clear( ); } Discussion The solution demonstrates how to store XML data in a text field of adatabase table and subsequently read it into an XmlDocument using the LoadXml( ... sampleXmlButton_Click(object sender, System.EventArgs e) { DataSet ds = new DataSet( ); // Fill the Categories table and add it to the DataSet. SqlDataAdapter da = new SqlDataAdapter("SELECT ... = xmlDoc.InnerXml; else // For a new row, add the row with the ID and XmlField. dt.Rows.Add(new object[] {id, xmlDoc.InnerXml}); // Update the database using the DataAdapter. da.Update(dt);...
... 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);...
... 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 Connecting toa 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...
... You want to get the original values and see which rows were added, edited, or deleted. Solution Create an XML DiffGram, which is a document that details the modifications made toa DataSet. ... row is added to the end of the DataTable. After these modifications, the DiffGram for the DataSet is: <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com :xml- msdata" xmlns:diffgr="urn:schemas-microsoft-com :xml- diffgram-v1"> ... is also the primary serialization format used by the .NET Framework to persist and serialize a DataSet. The DiffGram format is XML- based, making it platform and application independent. It is...
... 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....
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