Question

我正在尝试从XML文档中获取一些值。

这是从DevExpress

生成的Xml文档

<?xml version="1.0" encoding="ISO-8859-1"?>
<XtraSerializer version="15.2.5.0">
<Items>
<Item1 SelectedStencils="" CanvasSizeMode="AutoSize" PageSize="40000,40000" 
Theme="Office" ItemKind="DiagramRoot" Size="40000,40000">
<Children>
<Item1 ItemKind="DiagramShape" Size="100,75" Shape="BasicShapes.Rectangle" 
Position="19500,19440"/>
<Item2 ItemKind="DiagramShape" Size="100,90" Shape="BasicShapes.Triangle" 
Position="19540,19660"/>
<Item3 ItemKind="DiagramConnector" EndPoint="19590,19660" 
BeginPoint="19550,19515" EndItem="1" BeginItem="0" Points="19550,19650 
19590,19650" EndArrow="Filled90"/>
<Item4 ItemKind="DiagramShape" Size="100,75" Shape="BasicShapes.Rectangle" 
Position="19940,19440"/>
<Item5 ItemKind="DiagramConnector" EndPoint="19940,19477.5" 
BeginPoint="19600,19477.5" EndItem="3" BeginItem="0" Points="" 
EndArrow="Filled90"/>
<Item6 ItemKind="DiagramConnector" EndPoint="19940,19477.5" 
BeginPoint="19590,19660" EndItem="3" BeginItem="1" Points="19590,19525 
19930,19525 19930,19478" EndArrow="Filled90"/>
</Children>
</Item1>
</Items>
</XtraSerializer>

我试图从“ DiagramConnector”部分获取值“ BeginItem”和“ EndItem”。

我试图通过DevExpress API BeginItem获取这些值– EndItem

但是每次尝试时，即使保存数据时值始终为Null，但在XML文档中却不是null。

所以我认为直接从XML文档获取值将是最好/唯一的方法。

这是我试图从xml文档中获取值的方法。
请记住，可能有上百万个DiagramConnection对象。

class Program
{
    static readonly string FolderLocation = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\Diagram Samples";
    static readonly string FileName = "d.xml";

    static void Main(string[] args)
    {
        string FullPath = System.IO.Path.Combine(FolderLocation, FileName);

        using (XmlDocumentCreator xmlDocument = new XmlDocumentCreator(FullPath))
        {
            string data = xmlDocument.ReadDocument.ToString();
            if (data.Contains("BeginItem") && data.Contains("EndItem"))
            {
                string xpath = "Items/Item1SelectedStencils/Children";
                var nodes = xmlDocument.XMLDocument.SelectNodes(xpath);

                foreach (XmlNode childrenNode in nodes)
                {
                    Console.Write(childrenNode.SelectSingleNode("//BeginItem").Value);
                }
            }
        }

        Console.ReadKey();
    }
}

这是我创建的XML Document类，
我知道它不适用于该项目，因为SelectNodes需要XmlDocument，仅用于测试。

class XmlDocumentCreator : IDisposable
{
    public XmlDocument XMLDocument { get; set; }

    // <summary>
    /// XmlDocument Creator
    /// </summary>
    /// <param name="xmlDocumentPath">xmlPath</param>
    public XmlDocumentCreator(string xmlDocumentPath)
    {
        XMLDocument = new XmlDocument();
        XMLDocument.Load(xmlDocumentPath);
    }

    /// <summary>
    /// Returns An Xml Document
    /// Which Can Then Be Read.
    /// </summary>
    /// <returns></returns>
    public XElement ReadDocument
    {
        get
        {
            if (XMLDocument != null)
            {
                return XElement.Parse(XMLDocument.InnerXml);
            }
            throw new Exception("XML Document Object Was Not Created");
        }
    }


    /// <summary>
    /// Will Dispose The XML Document
    /// And Also Call The Garbage Collector.
    /// </summary>
    public void Dispose()
    {
        if (XMLDocument != null)
        {
            GC.Collect();
            GC.WaitForPendingFinalizers();
            GC.SuppressFinalize(this);
            GC.Collect();
            Console.WriteLine("XML Document Object Disposed");
        }
    }
}

在一个理想的世界中，一旦我能够获得循环中每个值所需要的值，就可以将它们放到anonymous type上并对其进行任何处理。

从XML文档获取特殊价值

0 个答案: