... set of data.
The solution shows three ways to synchronize a DataSet with an XmlDataDocument:
Method 1
Populate a DataSet with both schema and data. Synchronize it with a new
XmlDataDocument, ... .NET Framework allows real-time, synchronous access to both a DataSet and its
XML representation in an XmlDataDocument object. The synchronized DataSet and
XmlDataDocu...
... for the command.
SqlXmlParameter param = cmd.CreateParameter( );
param.Name = "@CustomerID";
param.Value = customerId;
// Create the DataSet.
DataSet ds = new DataSet( );
... Server database
Update Updates the SQL Server database with the changes made to the DataSet
For more information about the SQLXML Managed Classes, see the Microsoft SQLXML
release docume...
... "< /xml& gt;";
xmlDoc.LoadXml(adoXml);
// Create a namespace manager for the XML document.
XmlNamespaceManager nm = new XmlNamespaceManager(xmlDoc.NameTable);
// Add ADO prefixes. ... Create a table of the schema for the DataReader.
DataTable schemaTable = dr.GetSchemaTable( );
// Create an XML document.
XmlDocument xmlDoc = new XmlDocument( );
//...
... records.
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[ Team LiB ]
Recipe 4.10 Updating a DataSet with a Many-to-Many Relationship
Problem
You have a DataSet that contains two tables that have a many-to-many relationship ... called to update the changes made to the DataSet with the
data source.
Refresh Button.Click
This event handler clears all data from the DataSet. LoadData( ) is then calle...
... second, and a period of one second.
Update Button.Click
Uses a DataAdapter to update changes made to the first DataTable
back to the data
source.
CheckRefreshDataSet( )
This method is called ...
seconds—the value of the constant DATAREFRESH_SECONDS in the sample—
into the future. Finally, a thread timer is created with a TimerClassback delegate
CheckRefreshDataSet, with a...
...
XMLNodeReader Provides a parser over an XML Document Object Model
(DOM) API, similar to the XMLNode tree.
XMLValidatingReader Takes an XMLTextReader adding validation. In doing so, it
provides a ... Use XMLReader to Read an XML Document
In How-To 12.1, I learned how to write out data to an XML document by using the
XMLWriter. How do I read data using the XMLReade...
... the
data from the data table into an XML document.
Creating the Data Table
Rather than using a DataAdapter object to create and populate the data table from live
data, the code will create ... Use XMLWriter to Create an XML Document
Sometimes I need to take data that is in my database and write it out to an XML
document. I heard that XMLWriter is a good way to do this...
... Pass a Dataset Back from an XML Web Service
I want to be able to get more data than just a single value. How do I retrieve a whole
dataset from a Web Service?
Technique
When you need to pass ... need to pass back a record or multiple records from a Web Service, you have
to pass it back as a DataSet object, rather than a DataTable object.
For this How-To, you wil...
... Team LiB ]
Recipe 2.2 Building a DataSet Programmatically
Problem
You want to build a DataSet programmatically—including adding tables, columns,
primary keys, and relations—from a schema ... the DataSet identifying the tables, columns, indexes, constraints, and data
relations that need to be created.
2. Create a new DataSet, naming it in the constructor.
3. Create a...
... available to anyone. These key pairs are used both to encrypt data
(data encrypted with the public key can only be decrypted with the private key) and sign
data (data signed with the private ... CryptoStreamMode.Read);
ds.ReadXml(cs, XmlReadMode.ReadSchema);
cs.Close( );
dataGrid.DataSource = ds.DefaultViewManager;
}
catch(Exception ex)
{
dataGrid.DataSource = null;...