Tài liệu Modifying Data Using a Strongly Typed DataSet pptx

... MyDataSet.CustomersDataTable myDataTable = myDataSet1.Customers; // create a new DataRow in myDataTable using the // NewCustomersRow() method of myDataTable MyDataSet.CustomersRow myDataRow = myDataTable.NewCustomersRow(); ... Modifying Data Using a Strongly Typed DataSet In Chapter 10 , you saw how to create and use a strongly typed DataSet class named...

Ngày tải lên: 24/12/2013, 01:17

... Designing Data Services Module 9: Data Storage Considerations Designing Data Services and Data Models Investigation Process Data Requirements Activity 3.1: Identifying Data- Related Use Cases and Data ... that an actor must know to perform a function or task. Each functional data requirement is directly traceable to an actor and an object within a use case. Nonfunctional...

Ngày tải lên: 10/12/2013, 17:15

... Team LiB ] Recipe 2.19 Replacing Null Values in a Strongly Typed DataSet Problem When a column in a database has a null value, you want the value in the DataSet to be a string indicating ... Create the DataAdapter. SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Categories", ConfigurationSettings.AppSettings["Sql_ConnectString"]); if (a...

Ngày tải lên: 14/12/2013, 18:16

... either case, data is loaded into the DataSet and the collections of rows and columns in the DataSet are iterated over to display the data and to demonstrate the effect of the schema annotations. ... Create the typed DataSet with name annotations. CategoriesDS_AnnotatedName ds = new CategoriesDS_AnnotatedName( ); // Fill the Categories table within DataSet. da.Fill(ds, CAT...

Ngày tải lên: 24/12/2013, 05:15

... the strongly typed DataSet. There is a class named TableNameRow for each table in the strongly typed DataSet. It has the base class DataRow and represents a row of data in the table. Table ... performance is better with an untyped DataSet rather than with a typed DataSet. • A strongly typed DataSet must be regenerated when the structure of the underlying dat...

Ngày tải lên: 21/01/2014, 11:20

... viewfinder frame with some matt board or cardboard (preferably acid- free), a utility knife, a ruler, and two large paper clips. Acid-free describes a high quality, long lasting, and ph balanced paper ... sideways to help you choose either a vertical (sometimes called “portrait”) or a horizontal (called “landscape”) drawing format. Through the adjustable opening, you can exa...

Ngày tải lên: 14/12/2013, 15:15

... OleDb.OleDbDataAdapter Dim dtRegions As DataTable odaRegions = New OleDb.OleDbDataAdapter("Select RegionID, _ 'wfrmHowto5_5b.aspx?RegID=' + Cast(RegionID as Char(2)) As RegionURL, ... Text='<%# DataBinder.Eval(Container, "DataItem.RegionDescription") %>' NavigateURL='<%# DataBinder.Eval(Container, "DataItem.RegionURL") %...

Ngày tải lên: 14/12/2013, 20:16

Ngày tải lên: 14/12/2013, 20:16

... curly braces. Here is a C# class called Circle that contains one method (to calculate the circle's area) and one piece of data (the circle's radius): class Circle { double Area() ... 3.141592 * radius * radius; } double radius; } The body of a class contains ordinary methods (such as Area) and fields (such as radius)—remember that variables in a class are ca...

Ngày tải lên: 15/12/2013, 00:15

... client cannot access either the processing program or the database. Therefore the processing program may read and write files on the server and access and modify a database. 13 Accessing a Database ... </tr> 17 </table> Tables are widely used in HTML to display data in even rows and columns, not just for displaying data from a database. The Java Processing Program pack...

Ngày tải lên: 22/12/2013, 17:15