4 connect to a web service
Use Policy Frameworks to Enforce Web Service Requirements with WS-Policy
... the available Web service operations Web services need the ability to selectively grant access to an operation based on a user’s authorization level Authorization, like authentication, is a technology ... Flags=SecurityPermissionFlag.UnmanagedCode)] public class CustomUsernameTokenManager : UsernameTokenManager { protected override string AuthenticateToken( UsernameToken token ) { // Custom authorization scheme ArrayList ... manager that extracts the username and password information, and then compares it against a separate information store If verification fails, then the service raises a SOAP exception back to the client...
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Creating a Web Service
... mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet, "Customers"); ... http://DbProgramming/NorthwindWebService: [WebService(Namespace="http://DbProgramming/NorthwindWebService")] public class Customers : System .Web. Services.WebService Notice that you set the Namespace in a line placed ... uses classes in the System.Data.SqlClient namespace, you'll also need to add the following line near the top of your Customers.asmx.cs file: using System.Data.SqlClient; By default, a Web service...
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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 to be ... string connectionString = "server=localhost;database=Northwind;uid=sa;pwd=sa"; // create a SqlConnection object to connect to the // database, passing the connection string to the constructor SqlConnection ... 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 unused and stored...
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Registering a Web Service
... and click Submit to continue Make sure your organization is selected, and click Submit to continue Next, enter the details for your Web service Enter a name for your Web service, along with a ... Logging in using a Microsoft Passport account Note If you don't have a Passport account, click the Get One Now link and sign up for a Passport account Enter your email address, name, and phone number ... you create a really useful Web service that you believe other organizations will want to use, you can register your Web service with the production environment Figure 17.12: The UDDI Web Service...
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Tài liệu Module 7: Building and Consuming a Web Service That Uses ADO.NET ppt
... Consuming a Web Service That Uses ADO.NET How to Build a Web Service That Returns Database Information ! Web services that return database information typically: " " " " " Establish a connection to a ... warning message saying that a data set was not found, and offering to connect to the central database to create one Click Yes This will connect to the central database, and download a list of employees ... Building and Consuming a Web Service That Uses ADO.NET How to Consume a Web Service ! To consume a Web service in a client application, you need to: " " " Add a Web Reference to the Web service Create...
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Tài liệu Using a SqlConnection Object to Connect to a SQL Server Database phần 2 doc
... state of the connection to the database The State property returns a constant from the ConnectionState enumeration Note An enumeration is a list of numeric constants, each of which has a name ... StateChangeEventArgs 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 object ... SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler);...
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Tài liệu Using a Web Service doc
... Button on your form to open the code editor, and add the following code to your button's click method: localhost.Customers myCustomersService = new localhost.Customers(); customersDataGrid.DataSource ... myCustomersService.RetrieveCustomers(whereClauseTextBox.Text); customersDataGrid.DataMember = "Customers"; Note Once again, if your Web service is not deployed on the local computer, then replace ... computer, then replace localhost in this code with the name of your remote computer This code creates an object named myCustomersService to call your Web service, and displays the returned results...
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Tài liệu What Is a Web Service? ppt
... you can concentrate on building a Web service Web Services Enhancements Not long after Web services became a mainstream technology for integrating distributed services together, it became apparent ... an organization that later became known as the Organization for the Advancement of Structured Information Standards, or OASIS As the shortcomings of the early Web services infrastructure became ... that is trying to fraudulently obtain information? How can you restrict access to a Web service to specific users? These are matters of message integrity, confidentiality, and authentication, and...
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Tài liệu Updating Server Data Using a Web Service pptx
... ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderDetailTable = new DataTable(ORDERDETAILS_TABLE); da.FillSchema(orderDetailTable, SchemaType.Source); da.Fill(orderDetailTable); ds.Tables.Add(orderDetailTable); ... ORDERS_ORDERDETAILS_RELATION = "Order_OrderDetails_Relation"; // [WebMethod] public DataSet LoadOrders( ) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet ... DataSet da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderTable = new DataTable(ORDERS_TABLE); da.FillSchema(orderTable, SchemaType.Source);...
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Tài liệu Using a Web Service as a Data Source pdf
... "Order_OrderDetails_Relation"; // [WebMethod] public DataSet LoadOrders( ) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet da = new SqlDataAdapter("SELECT ... OrderDetails table and add it to the DataSet da = new SqlDataAdapter("SELECT * FROM [Order Details]", ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderDetailTable = new DataTable(ORDERDETAILS_TABLE); ... ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderTable = new DataTable(ORDERS_TABLE); da.FillSchema(orderTable, SchemaType.Source); da.Fill(orderTable); ds.Tables.Add(orderTable);...
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Tài liệu Create a Dialog Box to Connect to a New Database, Including Listing Available SQL Servers and Databases pdf
... string that connects you to the SQL Server, allowing you access to the databases LoginSecure Flag that specifies that you want to connect to the SQL Server using a trusted connection Databases Collection ... Property Setting Label Name Label1 Text SQL Servers ListBox Name lstSQLServers Label Name Label2 Text Databases ListBox Name lstDatabases Label Name Label3 Text Connection String Name txtConnectionString ... establishing an instance of the SQL-DMO application, the code calls the ListAvailableSQLServer method If no names are loaded into the oNames namelist object (meaning that they were not available...
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Tài liệu Updating Server Data Using a Web Service ppt
... ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderDetailTable = new DataTable(ORDERDETAILS_TABLE); da.FillSchema(orderDetailTable, SchemaType.Source); da.Fill(orderDetailTable); ds.Tables.Add(orderDetailTable); ... ORDERS_ORDERDETAILS_RELATION = "Order_OrderDetails_Relation"; // [WebMethod] public DataSet LoadOrders( ) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet ... DataSet da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["DataConnectString"]); DataTable orderTable = new DataTable(ORDERS_TABLE); da.FillSchema(orderTable, SchemaType.Source);...
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Tài liệu Binding Data to a Web Forms DataList pdf
... DataTable CreateDataSource( ) { DataTable dt = new DataTable(TABLENAME); // Create the DataAdapter and fill the table using it SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM " + TABLENAME ... } private DataTable UpdateDataSource(DataTable dt) { // Create a DataAdapter for the update SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM " + TABLENAME + " ORDER BY Id", ConfigurationSettings.AppSettings["DataConnectString"]); ... session variable DataView dv = ((DataTable)Session["DataSource"]).DefaultView; // Bind the data view to the data list dataList.DataSource = dv; dataList.DataBind( ); } private void dataList_CancelCommand(object...
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Tài liệu Binding Data to a Web Forms DataGrid ppt
... data source such as a DataReader, DataSet, DataTable, or DataView Any class that implements the IEnumerable interface can be bound The easiest way to create a DataGrid control is to drag the DataList ... DataTable CreateDataSource( ) { DataTable dt = new DataTable( ); // Create a DataAdapter and fill the Orders table with it SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["DataConnectString"]); ... Update the current page for the data grid dataGrid.CurrentPageIndex = e.NewPageIndex; // Bind the data view to the data grid dataGrid.DataSource = dv; dataGrid.DataBind( ); } private void dataGrid_SortCommand(object...
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The Semantic Web:A Guide to the Future of XML, Web Services, and Knowledge Management phần 4 pdf
... available cars on a certain date, lists rental rates, and allows an application to make a reservation for a car Expense report creator This Web service automatically creates expense reports, based ... databases treat data as facts, so it is a stretch to think about data as assertions One commonsense application of reification is annotations of other people’s work Annotations, by nature, are ... gridenabled Web services as products A Semantic Web of Web Services The Semantic Web and Web services go hand in hand XML, a self-describing language, is not enough WSDL, a language that describes...
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The Semantic Web: A Guide to the Future of XML, Web Services, and Knowledge Management doc
... path to machine-processable data is to make the data smarter All of the technologies in this book are the foundations What Is the Semantic Web? of a systematic approach to creating “smart data.” ... in the way we think about data Historically, data has been locked away in proprietary applications Data was seen as secondary to processing the data This incorrect attitude gave rise to the expression ... This allows the combination and recombination of data at a more atomic level and very fine-grained analysis of data Thus, in this stage, data no longer exists as a blob but as a part of a sophisticated...
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The Semantic Web:A Guide to the Future of XML, Web Services, and Knowledge Management phần 2 potx
... software agents and systems that will need to consume data on the World Wide Web An additional benefit for storing data in XML, rather than binary data, is that it can be searched as easily as Web pages ... Booking travel, for example, is an example where the Semantic Web and Web services could aid in making a painful task easy Making travel arrangements can be an administrative nightmare Everyone has ... is “has Ancestor.” Here is how the rule applies to the “has Ancestor” property: If Joe hasAncestor Sam and Sam hasAncestor Jill, then Joe hasAncestor Jill Lastly, the Web ontology language being...
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The Semantic Web:A Guide to the Future of XML, Web Services, and Knowledge Management phần 3 pdf
... and save methods specify a standard way to load an XML document into a DOM and a way to save a DOM into an XML document Abstract schemas provide classes to represent DTDs and schemas and operations ... Recommendation The PSVI defines a standard set of information classes that an application can retrieve after an instance document has been validated against a schema For example, an application can ... attach words (or labels) to our data values to describe it How could we attach sentences? What about paragraphs? While the approach toward meta data evolution will not follow natural language...
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