blocks|key|1367000|text|我在VB中做了这种自动验证，我是这样做的(转换成C#)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1367001|XmlReaderSettings+settings+=+new+XmlReaderSettings();
settings.ValidationType+=+ValidationType.Schema;
settings.ValidationFlags+=+settings.ValidationFlags+%7C
+++++++++++++++++++++++++++Schema.XmlSchemaValidationFlags.ProcessSchemaLocation;
XmlReader+XMLvalidator+=+XmlReader.Create(reader,+settings);|code-block|syntax|javascript|1367002|然后，我在读取文件时订阅了settings.ValidationEventHandler事件。|offset|length|style|CODE|1367003|entityMap^0|0|0|D|V|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I had do this kind of automatic validation in VB and this is how I did it (converted to C#):

<pre><code>XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.ValidationFlags = settings.ValidationFlags |
 Schema.XmlSchemaValidationFlags.ProcessSchemaLocation;
XmlReader XMLvalidator = XmlReader.Create(reader, settings);
</code></pre>

Then I subscribed to the <code>settings.ValidationEventHandler</code> event while reading the file.

blocks|key|1582177|text|您需要创建一个XmlReaderSettings实例，并在创建时将其传递给您的XmlReader。然后，您可以订阅设置中的ValidationEventHandler以接收验证错误。您的代码最终将如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1582178|using+System.Xml;
using+System.Xml.Schema;
using+System.IO;

public+class+ValidXSD
{
++++public+static+void+Main()
++++{

++++++++//+Set+the+validation+settings.
++++++++XmlReaderSettings+settings+=+new+XmlReaderSettings();
++++++++settings.ValidationType+=+ValidationType.Schema;
++++++++settings.ValidationFlags+%7C=+XmlSchemaValidationFlags.ProcessInlineSchema;
++++++++settings.ValidationFlags+%7C=+XmlSchemaValidationFlags.ProcessSchemaLocation;
++++++++settings.ValidationFlags+%7C=+XmlSchemaValidationFlags.ReportValidationWarnings;
++++++++settings.ValidationEventHandler+%2B=+new+ValidationEventHandler(ValidationCallBack);

++++++++//+Create+the+XmlReader+object.
++++++++XmlReader+reader+=+XmlReader.Create("inlineSchema.xml",+settings);

++++++++//+Parse+the+file.+
++++++++while+(reader.Read())+;

++++}
++++//+Display+any+warnings+or+errors.
++++private+static+void+ValidationCallBack(object+sender,+ValidationEventArgs+args)
++++{
++++++++if+(args.Severity+==+XmlSeverityType.Warning)
++++++++++++Console.WriteLine("\tWarning:+Matching+schema+not+found.++No+validation+occurred."+%2B+args.Message);
++++++++else
++++++++++++Console.WriteLine("\tValidation+error:+"+%2B+args.Message);

++++}
}|code-block|syntax|javascript|1582179|entityMap^0|1P|M|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You need to create an XmlReaderSettings instance and pass that to your XmlReader when you create it. Then you can subscribe to the <code>ValidationEventHandler</code> in the settings to receive validation errors. Your code will end up looking like this:

<pre><code>using System.Xml;
using System.Xml.Schema;
using System.IO;

public class ValidXSD
{
 public static void Main()
 {

 // Set the validation settings.
 XmlReaderSettings settings = new XmlReaderSettings();
 settings.ValidationType = ValidationType.Schema;
 settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessInlineSchema;
 settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessSchemaLocation;
 settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
 settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);

 // Create the XmlReader object.
 XmlReader reader = XmlReader.Create("inlineSchema.xml", settings);

 // Parse the file. 
 while (reader.Read()) ;

 }
 // Display any warnings or errors.
 private static void ValidationCallBack(object sender, ValidationEventArgs args)
 {
 if (args.Severity == XmlSeverityType.Warning)
 Console.WriteLine("\tWarning: Matching schema not found. No validation occurred." + args.Message);
 else
 Console.WriteLine("\tValidation error: " + args.Message);

 }
}
</code></pre>

blocks|key|1367118|text|下面的example验证XML文件并生成相应的错误或警告。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1367119|using+System;
using+System.IO;
using+System.Xml;
using+System.Xml.Schema;

public+class+Sample
{

++++public+static+void+Main()
++++{
++++++++//Load+the+XmlSchemaSet.
++++++++XmlSchemaSet+schemaSet+=+new+XmlSchemaSet();
++++++++schemaSet.Add("urn:bookstore-schema",+"books.xsd");

++++++++//Validate+the+file+using+the+schema+stored+in+the+schema+set.
++++++++//Any+elements+belonging+to+the+namespace+"urn:cd-schema"+generate
++++++++//a+warning+because+there+is+no+schema+matching+that+namespace.
++++++++Validate("store.xml",+schemaSet);
++++++++Console.ReadLine();
++++}

++++private+static+void+Validate(String+filename,+XmlSchemaSet+schemaSet)
++++{
++++++++Console.WriteLine();
++++++++Console.WriteLine("\r\nValidating+XML+file+{0}...",+filename.ToString());

++++++++XmlSchema+compiledSchema+=+null;

++++++++foreach+(XmlSchema+schema+in+schemaSet.Schemas())
++++++++{
++++++++++++compiledSchema+=+schema;
++++++++}

++++++++XmlReaderSettings+settings+=+new+XmlReaderSettings();
++++++++settings.Schemas.Add(compiledSchema);
++++++++settings.ValidationEventHandler+%2B=+new+ValidationEventHandler(ValidationCallBack);
++++++++settings.ValidationType+=+ValidationType.Schema;

++++++++//Create+the+schema+validating+reader.
++++++++XmlReader+vreader+=+XmlReader.Create(filename,+settings);

++++++++while+(vreader.Read())+{+}

++++++++//Close+the+reader.
++++++++vreader.Close();
++++}

++++//Display+any+warnings+or+errors.
++++private+static+void+ValidationCallBack(object+sender,+ValidationEventArgs+args)
++++{
++++++++if+(args.Severity+==+XmlSeverityType.Warning)
++++++++++++Console.WriteLine("\tWarning:+Matching+schema+not+found.++No+validation+occurred."+%2B+args.Message);
++++++++else
++++++++++++Console.WriteLine("\tValidation+error:+"+%2B+args.Message);

++++}
}|code-block|syntax|javascript|1367120|上面的示例使用以下输入文件。|1367121|<?xml+version='1.0'?>
<bookstore+xmlns="urn:bookstore-schema"+xmlns:cd="urn:cd-schema">
++<book+genre="novel">
++++<title>The+Confidence+Man</title>
++++<price>11.99</price>
++</book>
++<cd:cd>
++++<title>Americana</title>
++++<cd:artist>Offspring</cd:artist>
++++<price>16.95</price>
++</cd:cd>
</bookstore>|1367122|books.xsd|1367123|<xsd:schema+xmlns:xsd="http://www.w3.org/2001/XMLSchema"
++++xmlns="urn:bookstore-schema"
++++elementFormDefault="qualified"
++++targetNamespace="urn:bookstore-schema">

+<xsd:element+name="bookstore"+type="bookstoreType"/>

+<xsd:complexType+name="bookstoreType">
++<xsd:sequence+maxOccurs="unbounded">
+++<xsd:element+name="book"++type="bookType"/>
++</xsd:sequence>
+</xsd:complexType>

+<xsd:complexType+name="bookType">
++<xsd:sequence>
+++<xsd:element+name="title"+type="xsd:string"/>
+++<xsd:element+name="author"+type="authorName"/>
+++<xsd:element+name="price"++type="xsd:decimal"/>
++</xsd:sequence>
++<xsd:attribute+name="genre"+type="xsd:string"/>
+</xsd:complexType>

+<xsd:complexType+name="authorName">
++<xsd:sequence>
+++<xsd:element+name="first-name"++type="xsd:string"/>
+++<xsd:element+name="last-name"+type="xsd:string"/>
++</xsd:sequence>
+</xsd:complexType>

</xsd:schema>|1367124|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/db5d30c9(v=vs.110).aspx^0|3|7|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|C|$]]|$1|O|3|P|5|F|7|16|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

The following <a href="https://msdn.microsoft.com/en-us/library/db5d30c9(v=vs.110).aspx" rel="noreferrer">example</a> validates an XML file and generates the appropriate error or warning.

<pre><code>using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;

public class Sample
{

 public static void Main()
 {
 //Load the XmlSchemaSet.
 XmlSchemaSet schemaSet = new XmlSchemaSet();
 schemaSet.Add("urn:bookstore-schema", "books.xsd");

 //Validate the file using the schema stored in the schema set.
 //Any elements belonging to the namespace "urn:cd-schema" generate
 //a warning because there is no schema matching that namespace.
 Validate("store.xml", schemaSet);
 Console.ReadLine();
 }

 private static void Validate(String filename, XmlSchemaSet schemaSet)
 {
 Console.WriteLine();
 Console.WriteLine("\r\nValidating XML file {0}...", filename.ToString());

 XmlSchema compiledSchema = null;

 foreach (XmlSchema schema in schemaSet.Schemas())
 {
 compiledSchema = schema;
 }

 XmlReaderSettings settings = new XmlReaderSettings();
 settings.Schemas.Add(compiledSchema);
 settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);
 settings.ValidationType = ValidationType.Schema;

 //Create the schema validating reader.
 XmlReader vreader = XmlReader.Create(filename, settings);

 while (vreader.Read()) { }

 //Close the reader.
 vreader.Close();
 }

 //Display any warnings or errors.
 private static void ValidationCallBack(object sender, ValidationEventArgs args)
 {
 if (args.Severity == XmlSeverityType.Warning)
 Console.WriteLine("\tWarning: Matching schema not found. No validation occurred." + args.Message);
 else
 Console.WriteLine("\tValidation error: " + args.Message);

 }
}
</code></pre>

The preceding example uses the following input files.

<pre><code>&lt;?xml version='1.0'?&gt;
&lt;bookstore xmlns="urn:bookstore-schema" xmlns:cd="urn:cd-schema"&gt;
 &lt;book genre="novel"&gt;
 &lt;title&gt;The Confidence Man&lt;/title&gt;
 &lt;price&gt;11.99&lt;/price&gt;
 &lt;/book&gt;
 &lt;cd:cd&gt;
 &lt;title&gt;Americana&lt;/title&gt;
 &lt;cd:artist&gt;Offspring&lt;/cd:artist&gt;
 &lt;price&gt;16.95&lt;/price&gt;
 &lt;/cd:cd&gt;
&lt;/bookstore&gt;
</code></pre>

books.xsd

<pre><code>&lt;xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns="urn:bookstore-schema"
 elementFormDefault="qualified"
 targetNamespace="urn:bookstore-schema"&gt;

 &lt;xsd:element name="bookstore" type="bookstoreType"/&gt;

 &lt;xsd:complexType name="bookstoreType"&gt;
 &lt;xsd:sequence maxOccurs="unbounded"&gt;
 &lt;xsd:element name="book" type="bookType"/&gt;
 &lt;/xsd:sequence&gt;
 &lt;/xsd:complexType&gt;

 &lt;xsd:complexType name="bookType"&gt;
 &lt;xsd:sequence&gt;
 &lt;xsd:element name="title" type="xsd:string"/&gt;
 &lt;xsd:element name="author" type="authorName"/&gt;
 &lt;xsd:element name="price" type="xsd:decimal"/&gt;
 &lt;/xsd:sequence&gt;
 &lt;xsd:attribute name="genre" type="xsd:string"/&gt;
 &lt;/xsd:complexType&gt;

 &lt;xsd:complexType name="authorName"&gt;
 &lt;xsd:sequence&gt;
 &lt;xsd:element name="first-name" type="xsd:string"/&gt;
 &lt;xsd:element name="last-name" type="xsd:string"/&gt;
 &lt;/xsd:sequence&gt;
 &lt;/xsd:complexType&gt;

&lt;/xsd:schema&gt;
</code></pre>

blocks|key|1582277|text|如果您使用的是.NET+3.5，一种更简单的方法是使用XDocument和XmlSchemaSet验证。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1582278|XmlSchemaSet+schemas+=+new+XmlSchemaSet();
schemas.Add(schemaNamespace,+schemaFileName);

XDocument+doc+=+XDocument.Load(filename);
string+msg+=+"";
doc.Validate(schemas,+(o,+e)+=>+{
++++msg+%2B=+e.Message+%2B+Environment.NewLine;
});
Console.WriteLine(msg+==+""+?+"Document+is+valid"+:+"Document+invalid:+"+%2B+msg);|code-block|syntax|javascript|1582279|有关更多帮助，请参阅MSDN+documentation。|1582280|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/bb340331.aspx^0|R|9|11|C|0|0|A|I|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|M|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

A simpler way, if you are using .NET 3.5, is to use <code>XDocument</code> and <code>XmlSchemaSet</code> validation.

<pre><code>XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add(schemaNamespace, schemaFileName);

XDocument doc = XDocument.Load(filename);
string msg = "";
doc.Validate(schemas, (o, e) =&gt; {
 msg += e.Message + Environment.NewLine;
});
Console.WriteLine(msg == "" ? "Document is valid" : "Document invalid: " + msg);
</code></pre>

See the <a href="http://msdn.microsoft.com/en-us/library/bb340331.aspx" rel="noreferrer">MSDN documentation</a> for more assistance.

blocks|key|1582317|text|就我个人而言，我倾向于不使用回调进行验证：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1582318|public+bool+ValidateSchema(string+xmlPath,+string+xsdPath)
{
++++XmlDocument+xml+=+new+XmlDocument();
++++xml.Load(xmlPath);

++++xml.Schemas.Add(null,+xsdPath);

++++try
++++{
++++++++xml.Validate(null);
++++}
++++catch+(XmlSchemaValidationException)
++++{
++++++++return+false;
++++}
++++return+true;
}|code-block|syntax|javascript|1582319|(参见Timiz0r在Synchronous+XML+Schema+Validation?+.NET+3.5上的帖子)|offset|length|1582320|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/7719022/synchronous-xml-schema-validation-net-3-5^0|0|0|B|17|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

personally I favor validating without a callback:

<pre><code>public bool ValidateSchema(string xmlPath, string xsdPath)
{
 XmlDocument xml = new XmlDocument();
 xml.Load(xmlPath);

 xml.Schemas.Add(null, xsdPath);

 try
 {
 xml.Validate(null);
 }
 catch (XmlSchemaValidationException)
 {
 return false;
 }
 return true;
}
</code></pre>

(see Timiz0r's post in <a href="https://stackoverflow.com/questions/7719022/synchronous-xml-schema-validation-net-3-5">Synchronous XML Schema Validation? .NET 3.5</a>)

I have an XML file with a specified schema location such as this:

<pre><code>xsi:schemaLocation="someurl ..\localSchemaPath.xsd"
</code></pre>

I want to validate in C#. Visual Studio, when I open the file, validates it against the schema and lists errors perfectly. Somehow, though, I can't seem to validate it automatically in C# without specifying the schema to validate against like so:

<pre><code>XmlDocument asset = new XmlDocument();

XmlTextReader schemaReader = new XmlTextReader("relativeSchemaPath");
XmlSchema schema = XmlSchema.Read(schemaReader, SchemaValidationHandler);

asset.Schemas.Add(schema);

asset.Load(filename);
asset.Validate(DocumentValidationHandler);
</code></pre>

Shouldn't I be able to validate with the schema specified in the XML file automatically ? What am I missing ?

Validating an XML against referenced XSD in C#

Visual Studio

我有一个具有指定模式位置的XML文件，如下所示：xsi:schemaLocation="someurl ..\localSchemaPath.xsd"我想在C#中进行验证。当我打开该文件时，Visual Studio会根据架构对其进行验证，并完美地列出错误。但是，如果不像这样指定要验证的模式，我似乎无法在C#中自动验证...

问根据C#中引用的XSD验证XML
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