... dataGrid.DataSource = ds.Tables["tblmapCategories"].DefaultView; Discussion When the Fill( ) method of the DataAdapter is used to fill a DataSet, the column names used in the DataSet ... object has a collection of DataColumnMapping objects in its DataColumnMappingCollection that are accessed through its ColumnMappings property. These objects map the name of a column in the data ... objects map the name of a table in the data source to a DataTable with different name in the DataSet. When a batch query is used to fill multiple tables within a DataSet, the table names default to...
... DataTable.Create a new DataColumn instance for the calculated column. Assign the DataColumn object’s ColumnName and DataType fields.Build a column expression string (see “DataColumn.Expression ... a DataRow by its primary key Add DataColumn instances to a DataTable.Add one or more of those DataColumn instances to the table’s PrimaryKey property.Add relevant DataRow objects to the DataTable.Call ... method, passing it the desired row’s primary key value(s).Locate DataRow objects with a SQL-like query Add DataColumn instances to a DataTable.Add relevant DataRow objects to the DataTable.Build...
... not nearly as pure as the Java boolean data type JavaScript boolean values are easily converted to and from other data types, and so in practice, the use of boolean values in JavaScript is muchmore ... arbitrary JavaScript expressions:An array is a collection of data values, just as an object is. While each data value ame, each data value in an array has a number, or index. In JavaScript, you ... variablefu data values, in Chapter 7.Since functions are values just like numbers and strings, they can be assigned to object roperties just like other values can. When a function is assigned...
... retrieve data from multiple tables. Module 2: Retrieving XMLData 33 Custom XML Formats Columns in a table that are mapped to an XML element can be represented as: Element values AttributesChild ... for retrieving dataas XML. Lead-in There are several scenarios where it is beneficial to retrieve dataas XML. Delivery Tip This slide builds automatically to show XML data being retrieved ... SELECT 1 AS Tag, NULL AS Parent, OrderID AS [Invoice!1!InvoiceNo], OrderDate AS [Invoice!1!Date!Element] FROM Orders WHERE OrderID=10248 The AS keyword is optional when assigning...
... XMLData Island Use XML- aware browsers to process XMLdata on the client. A common technique is to store the data in an XMLdata island on the Web page, and bind data controls to the XMLdata ... includes data type and nullability metadata for each column. Topic Objective To explain how recordsets can be saved as XML. Lead-in You can represent data from any data source asXML by ... need to render data retrieved from a Microsoft Access database as XML. How can you use ADO to do this? Open an ADO recordset that contains the required data, and save it as XML. 2. You...
... gian kéo dài. Mệnh đề As dùng để diễn đạt phần thông tin ít quan trọng hơn, và thường đứng ở đầu câu.• As I was driving to work, I saw him walking down the street. Mệnh đề When và While có thể ... he was watching TV, I was working.• He slept while I cooked supper. As đề cập đến hai tình huống tiến triển và thay đổi cùng nhau. Chúng ta thường sử dụng thời đơn giản của động từ • As I ... older, I get more optimistic.• As he came into the room, all rose to their feet. When đề cập đến tuổi tác và các giai đoạn của cuộc sống• His parents died when he was ten.III/ Các hành đ ng ng...
... directory that references a SQL Server 2000 database. Test functionality of a SQL Server 2000 database through HTTP. Create an XML template to retrieve XMLdata over HTTP. Create a client ... section. Lead-in XML templates provide a way to publish data without providing direct access to the database. Module 5: Using HTTP to Access XMLData 3 Publishing SQL Server Data over HTTP ... use database object permissions to prevent access to sensitive data, you should generally avoid allowing users to specify their own queries. This is particularly true when publishing a database...
... <PhotographNumber>3</PhotographNumber><DateTaken>12/15/1999</DateTaken><TimeTaken></TimeTaken><PlaceTaken>Louvre</PlaceTaken><SubjectName>Dad</SubjectName><SubjectPhone></SubjectPhone><LensUsed></LensUsed><Aperture></Aperture><ShutterSpeed></ShutterSpeed><FilterUsed></FilterUsed><Flash>False</Flash><PrintSize></PrintSize> XML Source Document XML Source Document XML Metadata XML Metadata XML Model XML ModelRESULT SET:<Photograph ... for Handling XMLData 7 What Is the XML Document Object Model? City .xml in memoryCity .xml in memory!DOM is the W3C programming interface for XML !DOM models an XML source as a tree of ... objectives Module 4: Technologies for Handling XMLData 3 What Is XML Metadata? !Metadata is data about data !Humans use lexical metadata to understand the markup"Consists of...
... nested XMLdata 1. Create an outer TABLE element and set the DATASRC attribute to the ID of the XMLdata island. <TABLE DATASRC="#xmldso"> 2. Create TD elements for all XMLdata ... ID=price DATASRC="#xmldso" DATAFLD="price"></DIV><DIV ID=title DATASRC="#xmldso" DATAFLD="title"></DIV><DIV ID=price DATASRC="#xmldso" ... Embedding XMLData in HTML 41 Exercise 2: Binding an HTML Table to the XMLData Island In this exercise, you will bind the XMLdata island in Details.asp to an HTML table. ! Bind the XML data...
... Manipulating XMLData on the Client Using DOM Accessing XMLData !Access an XMLdata island!Access an external XML document< ;XML ID="dsoDetails" src="Books .xml& quot;>< /XML& gt;Set ... Lab 6.2: Manipulating XMLData on the Client 49 Displaying XMLData Using DOM 57 Lab 6.3: Displaying XMLData Using DOM 65 Review 72 Module 6: Manipulating XML Data on the Client Using ... data island or from an external XML document file. Accessing a data island You can access an XMLdata island by using the ID attribute of the data island. The XMLDocument property of the data...