create strongly typed dataset from xsd

... the handling of null values. The sample uses one XSD file: CategoriesDS_AnnotatedNull .xsd The schema used to generate the strongly typed DataSet. The schema is annotated so the null Description ... ] 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 that no ... (annotatedRadioButton.Checked) { // Create the typed DataSet without null annotation. CategoriesDS_AnnotatedNull ds = new CategoriesDS_AnnotatedNull( ); // Fill the Categories table within DataSet. da.Fill(ds,...

Ngày tải lên: 14/12/2013, 18:16

... example form. Modifying Data Using a Strongly Typed DataSet In Chapter 10 , you saw how to create and use a strongly typed DataSet class named MyDataSet. You can use objects of this class ... and rows from that table. In this section, you'll see how to modify data using a strongly typed object of the MyDataSet class. Note One of the features of a strongly typed DataSet object ... form in the example project shows how to add, modify, and remove a row to a strongly typed DataSet object named myDataSet1. You can see the steps that accomplish these tasks in the following...

Ngày tải lên: 24/12/2013, 01:17

... classes and properties in strongly typed DataSet classes. The sample uses one XSD file: CategoriesDS_AnnotatedName .xsd The schema used to generate the strongly typed DataSet. The schema is annotated ... 2.18 Controlling the Names Used in a Strongly Typed DataSet Problem You want to assign your own names to the classes and properties for strongly typed DataSet classes. Solution Use annotations ... objects in a strongly typed DataSet and the default names and available annotations for each. Table 2-18. Default values and available annotations for elements of strongly typed DataSet objects...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 21/01/2014, 07:20

Ngày tải lên: 21/01/2014, 11:20

... objects from a database. So let's move on to Chapter 16, where you'll learn to do the same with the strongly typed SQLData and CustomDatum interfaces. Chapter 16. Strongly Typed Object ... need to create a Statement or a PreparedStatement object to execute it. Since we formulated a SELECT statement for use with a Statement object, we'll create a Statement: stmt = conn.createStatement( ... PERSON_TYP object from the database. For example, to select a copy of Tim O'Reilly's Person object from the database, use the following SELECT statement: select value(p) from person_ot...

Ngày tải lên: 29/09/2013, 09:20

... objects—inherit from the ADO.NET disconnected classes allowing you to cast the DataRow to the strongly typed row. [ Team LiB ] [ Team LiB ] Recipe 3.11 Getting Typed DataRows from DataViews ... DataView to find rows in a typed DataSet, you want to convert the rows you find to typed DataRow objects having all the properties and methods defined in your typed DataSet. Solution Cast the ... a DataRowView to a typed DataRow. The sample code contains two event handlers: Form.Load Sets up the sample by creating a typed DataSet containing the Categories table from the Northwind...

Ngày tải lên: 24/12/2013, 05:15

... [ Team LiB ] Recipe 8.2 Saving and Loading a DataSet from XML Problem You need to save a DataSet as an XML file and create a DataSet from an XML file. Solution Use the XmlTextWriter ... on the form. Read Button.Click Creates a DataSet and reads in schema and data from a file containing a previously serialized XML. The XML is written from the DataSet to a stream and displayed. ... information about the DataSet schema. IgnoreSchema The DataSet is written without inline schema information. This is the default. WriteSchema The DataSet is written with an inline XSD schema for...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 21/01/2014, 07:20

... data grid on the form. Copy Button.Click Creates a destination DataSet and copies the schema and specified data into it from the source DataSet created in the Form.Load event handler. The ... of rows from the source to the destination table. Once the destination tables are created and the data is copied into them, the example shows how to create the DataRelation objects from the ... source DataSet in the destination DataSet. The sample code contains two event handlers: Form.Load Sets up the sample by creating a DataSet containing the Orders and Order Details tables from...

Ngày tải lên: 28/10/2013, 18:15

... username once again. The first table from the returned dataset is assigned to the DataSource property of dgUsers. Listing 13.6 frmHowTo13_4.vb: Retrieving a Dataset from a Web Service Private Sub ... <SecurityTier>3</SecurityTier> </Table> </NewDataSet> </diffgr:diffgram> < /DataSet& gt; 2. Open the Windows Project where you created the Login windows Form. Create a new Windows Form and ... the SecurityWebServices Web Service project you created in How-To 13.2. Add the code from Listing 13.4 in the "Technique" section to create the GetUserInfo method. Test the new Web...

Ngày tải lên: 24/12/2013, 06:17

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 21/01/2014, 12:20

Ngày tải lên: 21/01/2014, 12:20

Ngày tải lên: 26/01/2014, 10:20

Ngày tải lên: 27/01/2014, 11:07

Ngày tải lên: 31/03/2014, 07:20

Ngày tải lên: 11/07/2014, 14:26

... IoAttachDeviceToDeviceStack, IoCreateDeviceSecure, IoCreateSymbolicLink, IoDeleteDevice © Microsoft Corporation Send feedback on this topic Built on Friday, February 18, 2005 Page 2 of 2IoCreateDevice 9/19/2010mk:@MSITStore:E:\WINDDK\3790.1830\help\kmarch.chm::/hh/kmarch/k104_1e38a631 ... device. If a driver's call to IoCreateDevice returns an error, the driver should release any resources that it allocated for that device. Callers of IoCreateDevice must be running at IRQL...

Ngày tải lên: 16/08/2012, 08:46

Ngày tải lên: 16/08/2012, 08:46