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

... 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