C# 在单一方法中针对 XSD 验证 XML
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Validate XML against XSD in a single method
提问by Germstorm
I need to implement a C# method that needs to validate an XML against an external XSD and return a Boolean result indicating whether it was well formed or not.
我需要实现一个 C# 方法，该方法需要针对外部 XSD 验证 XML 并返回一个布尔结果，指示它的格式是否正确。
public static bool IsValidXml(string xmlFilePath, string xsdFilePath);
I know how to validate using a callback. I would like to know if it can be done in a single method, without using a callback. I need this purely for cosmetic purposes: I need to validate up to a few dozen types of XML documents so I would like to make is something as simple as below.
我知道如何使用回调进行验证。我想知道是否可以在不使用回调的情况下在单个方法中完成。我需要这纯粹是为了美观：我需要验证多达几十种类型的 XML 文档，所以我想做的事情像下面一样简单。
if(!XmlManager.IsValidXml(
@"ProjectTypes\ProjectType17.xml",
@"Schemas\Project.xsd"))
{
throw new XmlFormatException(
string.Format(
"Xml '{0}' is invalid.",
xmlFilePath));
}
采纳答案by psubsee2003
There are a couple of options I can think of depending on whether or not you want to use exceptions for non-exceptional events.
根据您是否要对非异常事件使用异常，我可以想到几个选项。
If you pass a null as the validation callback delegate, most of the built-in validation methods will throw an exception if the XML is badly formed, so you can simply catch the exception and return true/falsedepending on the situation.
如果传递 null 作为验证回调委托，大多数内置验证方法会在 XML 格式错误时抛出异常，因此您可以简单地捕获异常并根据情况返回true/ false。
public static bool IsValidXml(string xmlFilePath, string xsdFilePath, XNamespace namespaceName)
{
var xdoc = XDocument.Load(xmlFilePath);
var schemas = new XmlSchemaSet();
schemas.Add(namespaceName, xsdFilePath);
try
{
xdoc.Validate(schemas, null);
}
catch (XmlSchemaValidationException)
{
return false;
}
return true;
}
The other option that comes to mind pushes the limits of your without using a callbackcriterion. Instead of passing a pre-defined callback method, you could instead pass an anonymous method and use it to set a true/falsereturn value.
想到的另一个选项突破了您的without using a callback标准的限制。您可以传递一个匿名方法并使用它来设置true/false返回值，而不是传递预定义的回调方法。
public static bool IsValidXml(string xmlFilePath, string xsdFilePath, XNamespace namespaceName)
{
var xdoc = XDocument.Load(xmlFilePath);
var schemas = new XmlSchemaSet();
schemas.Add(namespaceName, xsdFilePath);
Boolean result = true;
xdoc.Validate(schemas, (sender, e) =>
{
result = false;
});
return result;
}
