本文整理汇总了VB.NET中System.Xml.Schema.XmlSchemaUnique类的典型用法代码示例。如果您正苦于以下问题：VB.NET XmlSchemaUnique类的具体用法？VB.NET XmlSchemaUnique怎么用？VB.NET XmlSchemaUnique使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了XmlSchemaUnique类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: XMLSchemaExamples
' 导入命名空间
Imports System.Xml
Imports System.Xml.Schema
Class XMLSchemaExamples
Public Shared Sub Main()
Dim schema As New XmlSchema()
' <xs:complexType name="customerOrderType">
Dim customerOrderType As New XmlSchemaComplexType()
customerOrderType.Name = "customerOrderType"
' <xs:sequence>
Dim sequence1 As New XmlSchemaSequence()
' <xs:element name="item" minOccurs="0" maxOccurs="unbounded">
Dim item As New XmlSchemaElement()
item.MinOccurs = 0
item.MaxOccursString = "unbounded"
item.Name = "item"
' <xs:complexType>
Dim ct1 As New XmlSchemaComplexType()
' <xs:attribute name="itemID" type="xs:string"/>
Dim itemID As New XmlSchemaAttribute()
itemID.Name = "itemID"
itemID.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
' </xs:complexType>
ct1.Attributes.Add(itemID)
' </xs:element>
item.SchemaType = ct1
' </xs:sequence>
sequence1.Items.Add(item)
customerOrderType.Particle = sequence1
' <xs:attribute name="CustomerID" type="xs:string"/>
Dim CustomerID As New XmlSchemaAttribute()
CustomerID.Name = "CustomerID"
CustomerID.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")
customerOrderType.Attributes.Add(CustomerID)
' </xs:complexType>
schema.Items.Add(customerOrderType)
' <xs:element name="ordersByCustomer">
Dim ordersByCustomer As New XmlSchemaElement()
ordersByCustomer.Name = "ordersByCustomer"
' <xs:complexType>
Dim ct2 As New XmlSchemaComplexType()
' <xs:sequence>
Dim sequence2 As New XmlSchemaSequence()
' <xs:element name="customerOrders" type="customerOrderType" minOccurs="0" maxOccurs="unbounded" />
Dim customerOrders As New XmlSchemaElement()
customerOrders.MinOccurs = 0
customerOrders.MaxOccursString = "unbounded"
customerOrders.Name = "customerOrders"
customerOrders.SchemaTypeName = New XmlQualifiedName("customerOrderType", "")
' </xs:sequence>
sequence2.Items.Add(customerOrders)
' </xs:complexType>
ct2.Particle = sequence2
ordersByCustomer.SchemaType = ct2
' <xs:unique name="oneCustomerOrdersforEachCustomerID">
Dim element_unique As New XmlSchemaUnique()
element_unique.Name = "oneCustomerOrdersforEachCustomerID"
' <xs:selector xpath="customerOrders"/>
element_unique.Selector = New XmlSchemaXPath()
element_unique.Selector.XPath = "customerOrders"
' <xs:field xpath="@customerID"/>
Dim field As New XmlSchemaXPath()
field.XPath = "@customerID"
' </xs:unique>
element_unique.Fields.Add(field)
ordersByCustomer.Constraints.Add(element_unique)
' </xs:element>
schema.Items.Add(ordersByCustomer)
Dim schemaSet As New XmlSchemaSet()
AddHandler schemaSet.ValidationEventHandler, AddressOf ValidationCallbackOne
schemaSet.Add(schema)
schemaSet.Compile()
Dim compiledSchema As XmlSchema = Nothing
For Each schema1 As XmlSchema In schemaSet.Schemas()
compiledSchema = schema1
Next
Dim nsmgr As New XmlNamespaceManager(New NameTable())
nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema")
compiledSchema.Write(Console.Out, nsmgr)
End Sub
Public Shared Sub ValidationCallbackOne(ByVal sender As Object, ByVal args As ValidationEventArgs)
Console.WriteLine(args.Message)
End Sub
End Class