CREATE STRONGLY TYPED DATASET FROM XSD

create all required relationships. 17. Instances of the strongly typed DataSet can now be created programmatically either by using the new keyword in C# or the New keyword in Visual Basic .NET or by dragging the DataSet object from the Data tab in the Visual[r]

try { // Write the XSD schema to the file. ds.WriteXmlSchema(xtw); resultTextBox.Text="XSD file written."; } catch(Exception ex) { MessageBox.Show(ex.Message); } finally { xtw.Close( ); } } } private void readSchemaButton_Click(object sender, System.EventArgs e) { // W[r]

records, the AcceptChanges and RejectChanges methods will be demonstrated as well. 1. Create a Windows application and name it WorkingWithDataTables. 2. Add a DataGridView to the form and change its Name property to Customers-DataGridVie w. 3. Add a button to the form and set the following pr[r]

5Setting up data access componentsSetting up the unidirectional datasetA basic database application uses a dataset to access information from the database. In dbExpress applications, you use a unidirectional dataset. A unidirectional dataset reads data from the dat[r]

non-serializable objects early, gives you a sense of the performance and memory usages ofasp-net_state.exe, and allows you to choose from any of the session options at deployment time.❑ Use a basePageclass or helper object with strongly typed properties to simplify your code. It[r]

blank form and then click the Generate Dataset link at the bottom of the Properties window for the form shown earlier in Figure 12.4. This displays the Generate Dataset dialog box, as shown in Figure 12.5. Leave all the settings in this dialog in their default state. Figure 12.5: The[r]

trong SqlDataAdapter để truyền câu lệnh SELECT vào một SqlCommand, và phát nó khi gọi phương thức Fill() trên adapter. Trở lại với các ví dụ về stored procedures trong chương trước, Tôi đã định nghĩa các stored procedure INSERT, UPDATE, và DELETE, nhưng chưa đưa ra một procedure để SELECT dữ liệu. C[r]

dataGrid.DataSource = ds.Tables[ORDERS_TABLE].DefaultView; Discussion An XML web service is software that is accessible using Internet standards such as XML and HTTP. Because it is accessible through open-standard interfaces, web services make it easy to allow heterogeneous systems to work together.[r]

Z001 1 200.00*/Because OPENXML() needs a three-step process to shred each XML document, it is not suitable forset-based operations. It cannot be called from a scalar or table-valued function. If a table has an XMLcolumn, and a piece of information is to be extracted from more than one[r]

[ Team LiB ] Recipe 4.13 Updating Data Asynchronously Using Message Queuing Problem You need to asynchronously update data on a database on system that is not always connected. Solution You must use message queuing and an XML DiffGram to: • Construct and send an MSMQ message containing a DiffGram t[r]

// Create an array of parent columns in the destination. DataColumn[] parentCols = new DataColumn[nCol]; for(int i = 0; i < nCol; i++) parentCols[i] = dsDest.Tables[parentTableName].Columns[ sourceRelation.ParentColumns[i].Ordinal]; // Create an array of child columns in t[r]

ConfigurationSettings.AppSettings["Sql_ConnectString"]); DataTable orderDetailTable = new DataTable(ORDERDETAILS_TABLE); da.FillSchema(orderDetailTable, SchemaType.Source); da.Fill(orderDetailTable); ds.Tables.Add(orderDetailTable); // Create a relation between the tables. ds.Relations[r]

// Create the parent and child column arrays. parentCols = new DataColumn[parentColsAL.Count]; parentColsAL.CopyTo(parentCols); childCols = new DataColumn[childColsAL.Count]; childColsAL.CopyTo(childCols); // Create the relation name based on the constraint name. relationName =[r]

// Display the results of the transformation. resultTextBox.Text = sw.ToString( ); } Discussion Extensible Stylesheet Transformations (XSLT) evolved from the Extensible Stylesheet Language (XSL). XSLT defines a standard for XML data transformation—parsing an input XML document and converting[r]

sau:E:\NET\HongDevelopment\LessonPreparation\Operators\operatorlist.xml(4): Element 'http://tempuri.org/operatorlist.xsd:operatorlist' has invalid child element 'http://tempuri.org/operatorlist.xsd:operator'. Đó là vì trong Schema không có nói rõ là bên trong Element operatorlist có nh[r]

AlfrescoTemplates cannot be associated through the web project after the web form is created. Since the web form is already created, the association of template must be done through Company Home | Data Dictionary | Web Forms | <web-form space name>. We will congure our template to the[r]

For a description of the regular expressions you can use with the xsd:pattern ele-ment, see Appendix D “Regular Expressions” in the “XML Schema Part 0:Primer” page at http://www.w3.org/TR/xmlschema-0/.The specific facets you can use depend on the particular type you are restricting.For a comp[r]

Returning Strongly Typed Column Values Up to this point, you've retrieved column values from a DataReader only as generic objects of the System.Object class (such objects are often referred to as being of the C# object type). Note All classes in C# are derived from the S[r]

text box on the form to demonstrate the effect of the schema annotation on null column values. The C# code is shown in Example 2-26. Example 2-26. File: TypedDataSetNullsForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using System.Data; us[r]

// Table name constants private const String CATEGORIES_TABLE = "Categories"; // . . . private void TypedDataRowFromDataViewForm_Load(object sender, System.EventArgs e) { // Create the typed DataSet. CategoriesDS dsTyped = new CategoriesDS( ); // Create and fill th[r]