從XML文檔內部以字符串形式讀取XML

Question

我有一個XMLDocument，正在我的C＃代碼中反序列化為對象。 直到我有如下所示的節點，它才能正常工作

  <Name>ABC</Name>
  <Message>Invalid Name</Message>

在上述情況下，我在C＃對象中得到的內容是Name = ABC和Message = Invalid Name 。

但是現在我需要讀取XMLDocument中的完整XML節點。 就是這樣

<ReadXML><fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
          <entity name="customerproduct">
            <attribute name="customerproductid" />
            <attribute name="name" />
            <attribute name="createdon" />
            <attribute name="customertype" />
            <attribute name="custodian_customerproductid" />
            <attribute name="accountnumber" />
            <order attribute="name" descending="false" />
            <filter type="and">
              <condition attribute="productgroup" operator="eq" uiname="Credit Cards" uitype="productgroup" value="{12344}" />
              <condition attribute="customer" operator="eq" uiname="abc xyz" uitype="contact" value="{1234}" />
            </filter>
          </entity>
        </fetch></ReadXML>

我的C＃代碼中有一個對象ReadXML，我一直在尋找將ReadXML節點內的完整XML作為ReadXML變量內的字符串。

像這樣

string ReadXML = "<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
          <entity name="customerproduct">
            <attribute name="customerproductid" />
            <attribute name="name" />
            <attribute name="createdon" />
            <attribute name="customertype" />
            <attribute name="custodian_customerproductid" />
            <attribute name="accountnumber" />
            <order attribute="name" descending="false" />
            <filter type="and">
              <condition attribute="productgroup" operator="eq" uiname="Credit Cards" uitype="productgroup" value="{12344}" />
              <condition attribute="customer" operator="eq" uiname="abc xyz" uitype="contact" value="{1234}" />
            </filter>
          </entity>
        </fetch>"

在我的代碼中，我正在這樣做，

 XmlDocument doc = new XmlDocument();

        doc.Load(@"D:\Development\Framework\TestApplication\XMLScript\XMLScript\XMLFile.xml");


        string XML = doc.InnerXml;
        operationTitle.Text = "Stop Lost Card"; ;
        System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(MyOperation));
        MemoryStream memStream = new MemoryStream(Encoding.UTF8.GetBytes(vrp_XML));
        MyOperation = (MyOperation)serializer.Deserialize(memStream);

在MyOperation類中，我有這樣的ReadXML，

[XmlElement(ElementName = "ReadXML")]
public string ReadXML { get; set; }

每當我嘗試將XML讀入字符串時，都會出現以下錯誤，

    System.InvalidOperationException was unhandled
  HResult=-2146233079
  Message=There is an error in XML document (1, 1329).
  Source=System.Xml
  StackTrace:
       at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
       at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
       at VeriTouch.CRM.USD.AgentScripting.AgentScriptingControl.loadData() in C:\Projects\AgentScripting_30102018\AgentScripting\AgentScripting\AgentScriptingControl.xaml.cs:line 323
       at VeriTouch.CRM.USD.AgentScripting.AgentScriptingControl.StartButton_Click(Object sender, RoutedEventArgs e) in C:\Projects\AgentScripting_30102018\AgentScripting\AgentScripting\AgentScriptingControl.xaml.cs:line 304
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
       at System.Windows.Controls.Primitives.ButtonBase.OnClick()
       at System.Windows.Controls.Button.OnClick()
       at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
       at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
       at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
       at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
       at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       at System.Windows.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at AgentScripting.App.Main()
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 
       HResult=-2146232000
       LineNumber=1
       LinePosition=1329
       Message=Unexpected node type Element. ReadElementString method can only be called on elements with simple or empty content. Line 1, position 1329.
       Source=System.Xml
       StackTrace:
            at System.Xml.XmlReader.ReadElementString()
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read4_AgentScript(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read5_AgentScripts(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read6_AgentBeginScriptList(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read11_USDStep(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read12_USDSteps(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read13_USDOperation(Boolean isNullable, Boolean checkType)
            at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderUSDOperation.Read14_USDOperation()
       InnerException: 

- - - - - - - - - - - - - - - -編輯 - - - - - - - - - -------------------------

MyOperation.CS類

public class USDOperation
{
    [XmlElement(ElementName = "OperationCode")]
    public string OperationCode { get; set; }

    [XmlElement(ElementName = "OperationName")]
    public string OperationName { get; set; }

    [XmlElement(ElementName = "AuthorizationLevel")]
    public string AuthorizationLevel { get; set; }

    [XmlElement(ElementName = "AgentBeginScriptList")]
    public AgentBeginScriptList AgentBeginScriptList { get; set; }

    [XmlElement(ElementName = "ReadXML")]
    public string ReadXML { get; set; }

    [XmlElement(ElementName = "USDSteps")]
    public USDSteps USDSteps { get; set; }

    [XmlElement(ElementName = "AgentEndScriptList")]
    public AgentEndScriptList AgentEndScriptList { get; set; }
}

Answer 1

問題是我們無法將復雜類型序列化/反序列化為字符串。 相反，我們可以定義我們自己的type並實現IXmlSerializable接口以提供我們自己的實現。

下面，我定義了一個MyString類來實現相同的功能。 在ReadXml方法中，我使用innerXml 。 您也可以使用outerXml 。

public class MyString : IXmlSerializable
{
    string _xmlString;
    public XmlSchema GetSchema()
    {
        return null;
    }

    public void ReadXml(XmlReader reader)
    {
        reader.MoveToContent();

        Boolean isEmptyElement = reader.IsEmptyElement;
        if (!isEmptyElement)
        {
            _xmlString = reader.ReadInnerXml();
        }
    }

    public void WriteXml(XmlWriter writer)
    {
        writer.WriteString(_xmlString);
    }
}

現在，屬性ReadXML將為MyString類型，而不是string類型。

[XmlElement(ElementName = "ReadXML")]
public MyString ReadXML { get; set; }

參考：我從以下Stackoverflow問題https://stackoverflow.com/a/22106996/643318獲得了這個主意

Answer 2

var xml=File.ReadAllText(@"D:\Development\Framework\TestApplication\XMLScript\XMLScript\XMLFile.xml")

Answer 3

var xml=File.ReadAllText(@"D:\XMLFile.xml");

var xml_l=xml.ToLower();

var ind_1=xml_l.IndexOf("<fetch");
var ind_2=xml_l.IndexOf("</fetch",ind_1);

var xml_fetch=xml.Substring(ind_1, ind_2 - ind_1+8);