Question

我正在尝试使用回调验证事件为不成功的XML验证构建自定义错误消息。我注意到元素的sender对象是XMLReader，我从（（XmlReader）sender）获得了元素或当前节点名称。来自ValidationEventargs.Exception.Message的.Name和exeception消息。我试图通过获取当前节点的父节点

来构建当前节点在验证中失败的路径

以下是代码段

                  XmlReaderSettings xrs = new XmlReaderSettings();
                  xrs.ValidationEventHandler += new ValidationEventHandler(ValidationEvent);


                  public void ValidationEvent(object sender, ValidationEventArgs e)
                  {
                   XmlReader xe = (XmlReader)sender;
                    ValidationError ve = new ValidationError();
                    ErrorElement = xe.Name;
                    ErrorMessage = e.Exception.Message;
                    ErrorPath = ""\\want to build the Node path
                  }

Answer 1

根据此thread，您需要使用XmlDocument.Validate。这是我的代码：

private static void ValidationErrorHandler(object sender, ValidationEventArgs e)
{
    if (e.Severity == XmlSeverityType.Error || e.Severity == XmlSeverityType.Warning)
    {      
        string offendingElementName = BuildQualifiedElementName((e.Exception as XmlSchemaValidationException));
        // meaningful validation reporting code goes here
        Console.Out.WriteLine("{0} is invalid", offendingElementName);   
     }
}

private static string BuildQualifiedElementName(XmlSchemaValidationException exception)
{
    List<string> path = new List<string>();
    XmlNode currNode = exception.SourceObject as XmlNode;
    path.Add(currNode.Name);
    while (currNode.ParentNode != null)
    {
        currNode = currNode.ParentNode;
        if (currNode.ParentNode != null)
        {
            path.Add(currNode.Name);
        }
    }
    path.Reverse();
    return string.Join(".", path);
}

如何在C＃中的XmlReaderSettings.ValidationEventHandler中获取无效的XMLNode

1 个答案: