Tài liệu Using a finally Block pdf

... ensures that the reader.Close statement always executes. You'll see another way to solve this problem in Chapter 13, Using Garbage Collection and Resource Management.” • If you want to ... = reader.ReadLine()) != null) { source.Text += line + "\n"; } } finally { if (reader != null) { reader.Close(); } } Even if an exception is thrown, the finally blo...

Ngày tải lên: 24/12/2013, 09:16

... the data in the control. Binding a DataGrid to a DataTable binds to the default view of the underlying DataTable. The DataView class represents a view of the DataTable that can be data bound ... whether deletes are allowed AllowEdit Gets or sets a Boolean value indicating whether edits are allowed AllowNew Gets or sets a Boolean value indicating whether new rows can be added If...

Ngày tải lên: 14/12/2013, 18:16

... the DataSet passed in as an NText input parameter @data. The parameters @data and @datadeleted contain an XML representation of a DataSet containing all updated and added records and all deleted ... Load the schema and data for the table. da.FillSchema(ds, SchemaType.Source, TABLENAME); da.Fill(ds, TABLENAME); // Columns in XML representation of data as attributes foreach(DataC...

Ngày tải lên: 21/01/2014, 11:20

... orderDetailTable = new DataTable(ORDERDETAILS_TABLE); da.FillSchema(orderDetailTable, SchemaType.Source); da.Fill(orderDetailTable); ds.Tables.Add(orderDetailTable); // Create a relation ... OrderDetails table and add it to the DataSet. da = new SqlDataAdapter("SELECT * FROM [Order Details]", ConfigurationSettings.AppSettings["DataConnectString"]); DataTa...

Ngày tải lên: 21/01/2014, 11:20

... on a specific topic. A special event can be a party, an information fair, a carwash for charity, a child safety day, a race, a street fair, or a community picnic. The only limit is your imagination! What ... postprom party provides an alternative. A walk -a- thon to benefit a local charity similarly heightens awareness while raising funds for a deserving organization, pr...

Ngày tải lên: 13/12/2013, 14:15

... System; using System.Data; using System.Data.SqlClient; class StateChange { // define the StateChangeHandler() method to handle the // StateChange event public static void StateChangeHandler( ... StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler); // open mySqlConnection, causing the St...

Ngày tải lên: 14/12/2013, 13:15

... of interactivity in the creation of a URL manager, which is used as a mini-database for Web, FTP, and email addresses. The result will be a highly interactive application, requiring relatively ... instance to react to a specific event • Retrieve data from a component instance • Change the appearance of a component instance In the exercises in this lesson, you'll implem...

Ngày tải lên: 14/12/2013, 22:15

... Using a Web Service In this section, you'll see how to use a Web service in a Windows application. Start VS .NET and select File ➣ New ➣ Project. Create a new Windows application named ... UseWebServiceInWindows. Drag a DataGrid, TextBox, and Button control to your form. Set the Name property of your DataGrid to customersDataGrid. Set the Name property of your TextBox to...

Ngày tải lên: 14/12/2013, 22:15

... BuildTree<char>('Z', 'X', &apos ;A& apos;, 'M', 'Z', 'M', 'N'); charTree.WalkTree(); 3. On the Build menu, click Build Solution. Verify that ... Program class. This should be a static method that takes a params array of T elements called data, and returns a Tree<T> object. The method definition should look like...

Ngày tải lên: 24/12/2013, 09:16

... in such case you will create a dynamic tension, which adds variety to the album (and general appeal). But don't make it too dramatic and don't make too many unbalanced pages – it ... Another issue with the balance is the balance between occupied and empty space. As my father said “the page should have some air to breathe”. Leave space around the photographs in such a way .....

Ngày tải lên: 24/12/2013, 20:15