Bug: XmlValidatingReader Ignores the Schema Nillable and the XML Nill Attributes (814177)

MORE INFORMATION

Steps to Reproduce the Behavior

1. Copy the following XML code. Paste the code on a Notepad or any other text editor.

   <Employee xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" />

2. Save the file as C:\EmpData.xml.
3. Paste the following XML code in Notepad or any other text editor.

   <xs:schema id="Employee" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" >
     <xs:element name="Employee" nillable="true" >
       <xs:complexType>
         <xs:choice maxOccurs="unbounded">
           <xs:element name="PersonalDetails" >
             <xs:complexType>
               <xs:sequence>
                 <xs:element name="emp_id" type="xs:string" minOccurs="0" />
                 <xs:element name="name" type="xs:string" minOccurs="0" />
               </xs:sequence>
             </xs:complexType>
           </xs:element>
         </xs:choice>
       </xs:complexType>
     </xs:element>
   </xs:schema>

4. Save the file as C:\Employee.xsd.
5. In Visual Studio .NET, create a new Visual Basic .NET Visual C# .NET Console Application project and name it MyXMLValidation.
6. Replace the existing code in the code pane with the following code:
   

   Visual Basic .NET Code

   Imports System
   Imports System.Xml
   Imports System.Xml.Schema
   
   Module MyXMLValidation
   
       Sub Main()
           ' Create an XML reader to read XML file.
           Dim rd As XmlTextReader = New XmlTextReader("C:\EmpData.xml")
   
           ' Create a validating reader to validate XML file.
           Dim vr As XmlValidatingReader = New XmlValidatingReader(rd)
   
           ' Associate an event handler to trap Validation errors.
           AddHandler vr.ValidationEventHandler, AddressOf XmlValidationError
   
           ' Validate schema type.
           vr.ValidationType = ValidationType.Schema
   
           ' Load XML schema file.
           vr.Schemas.Add("", New XmlTextReader("C:\Employee.xsd"))
   
           ' Validate the XML file.
           While vr.Read()
               'Do Nothing.
           End While
           Console.WriteLine(vbCrLf & "Press Enter to close...")
           Console.Read()
       End Sub
   
       ' Handles XML Validation errors.
       Sub XmlValidationError(ByVal sender As Object, ByVal e As ValidationEventArgs)
           ' Display the error message on console.
           Console.WriteLine(e.Message)
       End Sub
   End Module

   
   

   Visual C# .NET Code

   using System;
   using System.Xml;
   using System.Xml.Schema;
   		
   namespace MyXMLValidation
   {
   	class Class1
   	{
   		static void Main()
   		{
   			// Create an XML reader to read XML file.
   			XmlTextReader rd= new XmlTextReader("C:\\EmpData.xml");
   		
   			// Create a validating reader to validate XML file.
   			XmlValidatingReader vr = new XmlValidatingReader(rd);
   
   			// Associate an event handler to trap Validation errors.
   			vr.ValidationEventHandler += new ValidationEventHandler(XmlValidationError);
   
   			// Validate schema type.
   			vr.ValidationType = ValidationType.Schema;
   
   			// Load XML schema file.
   			vr.Schemas.Add("", new XmlTextReader("C:\\Employee.xsd"));
   		
   			// Validate the XML file.
   			while (vr.Read())
   			{
   				// Do Nothing.
   			}
   			Console.WriteLine("\nPress Enter to close...");
   			Console.Read();
   		}
   		
   		// Handles XML Validation errors.
   		static void XmlValidationError(object sender, ValidationEventArgs e)
   		{
   			// Display the error message on console.
   			Console.WriteLine(e.Message);
   		}
   	}
   }	

7. On the Debug menu, click Start to run the application.