XML架构1.1断言在C＃ [英] XML schema 1.1 assertions in C#

问题描述

我使用以下xml模式验证一些xml文件：

  String xsdMarkup = 
 ..] 
 
< xsd：complexType name ='connectionType'> 
< xsd：attribute name ='SourceElement'type ='guidType'use ='required'/> 
< xsd：attribute name ='TargetElement'type ='guidType'use ='required'/> 
< xsd：attribute name ='GUID'type ='guidType'use = '/> 
< xsd：assert test ='@ SourceElement == 0'/> 
< / xsd：complexType> 
 
 [...] b $ b; 
 
 XmlSchemaSet schemas = new XmlSchemaSet（）; 
 schemas.Add（，XmlReader.Create（new StringReader（xsdMarkup）））; 
 Console.WriteLine（Validating doc ...）; 
 docToValidate.Validate（schemas，（sender，e）=> 
 {
 Console.WriteLine（e.Message）; 
 valid = false; 
}真正）; 
  

我只是想介绍一些assert标签，以便有更强大的验证。但这会导致异常：

System.Xml.Schema.XmlSchemaException： http://www.w3.org/2001/XMLSchema:assert-element 在此上下文中不受支持。

我现在不知道是否...

1. 我在xsd中的错误位置使用了assert-element


2. http://www.w3.org/2001/XMLSchema-Namespace 不支持版本1.1的XML模式，从而断言元素


3. C＃ XmlSchemaSet不知道如何处理断言元素
。

感谢您的帮助！

assert 。

I'm validating some xml files with the following xml schema:

        String xsdMarkup = 
          "[...]

           <xsd:complexType name='connectionType'>
                <xsd:attribute name='SourceElement' type='guidType' use='required' />
                <xsd:attribute name='TargetElement' type='guidType' use='required' />
                <xsd:attribute name='GUID' type='guidType' use='required' />
                <xsd:assert test='@SourceElement == 0' />
           </xsd:complexType>

           [...]
          ";

        XmlSchemaSet schemas = new XmlSchemaSet();
        schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));
        Console.WriteLine("Validating doc ...");
        docToValidate.Validate(schemas, (sender, e) =>
        {
            Console.WriteLine(e.Message);
            valid = false;
        }, true);

I just wanted to introduce some assert tags in order to have more powerful validation. But this leads to the exception:

System.Xml.Schema.XmlSchemaException: The http://www.w3.org/2001/XMLSchema:assert-element is not supported in this context.

What I don't know right now is whether...

1. I used the assert-element in the wrong place inside the xsd
2. The http://www.w3.org/2001/XMLSchema-Namespace doesn't support version 1.1 of XML Schema and thereby assert-elements
3. C# XmlSchemaSet doesn't know how to deal with assert elements

Thanks for help in advance!

解决方案

The .NET implementation of XSD schemas handle only version 1.0 and not version 1.1 - hence it does not support assert.

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