Question

我收到错误

文档上的XmlSchemaSet为null或其中没有架构。在调用Validate之前提供架构信息。

但是我的架构文件位于指定的位置：C:\InvSchema.xsd

没有传递特定的命名空间，所以我将其设置为空。

那么，为什么我会收到此错误？
我还需要知道xml架构是否已成功验证，但验证函数没有返回确认它的布尔值。

如何从InvImp.Validate(evtHandler)获取该值？

以下是代码：

 Private Function ValidateSchema() As Boolean
            Try
                Dim settings As XmlReaderSettings = New XmlReaderSettings()
                settings.Schemas.Add("", "C:\InvSchema.xsd")
                settings.ValidationType = ValidationType.Schema
                Dim evtHandler As ValidationEventHandler = New ValidationEventHandler(AddressOf ValidationEventHandler)
                Dim reader As XmlReader = XmlReader.Create(_fileName, settings)
                Dim InvImp As XmlDocument = New XmlDocument
                InvImp.Validate(evtHandler)              
                ValidateSchema = True
            Catch ex As Exception
                Throw ex
                ValidateSchema = False
            End Try
        End Function


Shared Sub ValidationEventHandler(ByVal sender As Object, ByVal e As ValidationEventArgs)
        Select Case e.Severity
            Case XmlSeverityType.Error
                Library.Log("Schema validation failed error " & e.Message, LogType.ERRORLOG, ImportType.InvcIMP)
            Case XmlSeverityType.Warning
                Library.Log("Schema validation warning " & e.Message, LogType.EVENTLOG, ImportType.InvcIMP)
        End Select            
    End Sub

Answer 1

我认为有两个问题。事件处理程序没有正确添加，xmlReader应该用于验证而不是单独的XmlDocument对象：

Private Function ValidateSchema() As Boolean
    Try
        Dim settings As XmlReaderSettings = New XmlReaderSettings()
        settings.Schemas.Add("", "C:\InvSchema.xsd")
        settings.ValidationType = ValidationType.Schema
        AddHandler settings.ValidationEventHandler, AddressOf ValidationEventHandler
        Dim reader As XmlReader = XmlReader.Create(_fileName, settings)

        Do While reader.Read
            'Triggers validation'
        Loop

    Catch ex As Exception
        Throw ex
    End Try
    Return _valid
End Function

您还应该在事件处理程序中设置成员级别boolean（_valid）。将为每个发现的模式违规调用事件处理程序。

Xml验证错误：验证空架构集

1 个答案: