The System.Xml.XmlConvert Class

Supported Versions

Public Members

Overview

This convenient class supplies a series of conversion methods that deal with the mapping of .NET and XML Schema data types. For example, when retrieving values from XML documents, XMLConvert's "To" methods can be used to convert values to one of a number of supported .NET data types.

Example (VB.NET): How to use the XMLConvert.ToInt64 method to convert a textual value into a 64-bit signed integer.

This example uses the XMLTextReader.Read and XMLTextReader.MoveToContent methods to read through all the elements in a sample XML document. It then uses the XMLNodetype.Text property to see which contain numeric values. The XMLConvert.ToInt64 method is then used to convert each of the selected values to 64-bit signed integers. These values are added together, and the final total is then displayed.

        Dim objReader As New System.Xml.XmlTextReader("C:\sample.xml")

        Dim intValue As Integer

        While objReader.Read()

            objReader.MoveToContent()

            If objReader.NodeType = System.Xml.XmlNodeType.Text Then

                If IsNumeric(objReader.Value) Then

                    intValue += System.Xml.XmlConvert.ToInt64(objReader.Value)

                End If

            End If

        End While

        TextBox1.Text = CStr(intValue)