C#X文档保存未正确更新

我有一个正在插入新元素的XML文档

我正在使用以下代码：

XDocument xDoc = XDocument.Load(cust_file);

XElement parentXElement = xDoc.XPathSelectElement("LastLayout2/CommandBars");
XElement refXElement = xDoc.XPathSelectElement("LastLayout2/CommandBars/CommandBar[@Title = 'Standard']/Controls");

XElement temp = refXElement.XPathSelectElement("Control[@Parameter = 'GLOBAL!QMS_Launcher.Main']");

Console.WriteLine(refXElement);

XElement newElement = new XElement("Control");
XAttribute classAt = new XAttribute("Class", "CXTPControlButton");
                    XAttribute idAt = new XAttribute("Id", "0");
                    XAttribute paramAt = new XAttribute("Parameter", "GLOBAL!QMS_Launcher.Main");
XAttribute custIdAt = new XAttribute("CustomIconId", "68267");

XElement customIcon = new XElement("CustomIcon");
XElement icon = new XElement("Icon");
XAttribute width = new XAttribute("Width", "16");
XAttribute data = new XAttribute("Data", "ABAAAAAAFCAAAAAAEDAAICAAAAAAABAAAAAAABAAAAAABAAAACAADAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPPAAAAPPAAAAPPAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPGAAAAAAJNAAAAAAFCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANAAAAAAAHFAAAAAACHAAAAAAALAAAAAAPPAAAAAAJPAAAAAAHCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPFAAAAAAJOAAAAAAPPAAAAAAPPAAAAAAPPAAAAAALOABJAAACGDNJIAADNGJCGAAGJGAEAAAGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGDAAAAAANPAAAAAAMPAAAAAAJLAAAAAAMHAAAAAAFFAAAAAAODAAAAAAAKMGFEAAEIPPGKAAPPPHDFAAPHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEMAAAAAAPPAAAAAAPGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANGAAAAAAPPCBMAAAIFIHOEAAIHJFJDAAJFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOOAAAAAAEPAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHAAAAAAPPGBOAAAKGILHHAAILILHHAAILJJEGAAJJFEMCAAFEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEPAAAAAAEOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHJAAAAAAPPGCJBAAAHPPGKAAPPPPGKAAPPPPGKAAPPMPEKAAMPPDJCAAPDAAAAAAAAAAAAAAAAAAAAAAOMAAAAAAPPAAAAAAJBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAALLAAAAAAPPBCFBAAKFILHHAAILILHHAAILILHHAAILILHHAAILKGFEAAKGAAAAAAAAAAAAAAAAAAAAAANJAAAAAAPPAAAAAANMAAAAAABCAAAAAANBAAAAAABIAAAAAAPPAAAAAAHOAEKCAAMEIHOEAAIHIHOEAAIHIHOEAAIHIHOEAAIHJGDEAAJGGCJBAAGCAAAAAAAAAAAAAAFBAAAAAADOAAAAAAPPAAAAAAPPAAAAAAPPAAAAAAPPAAAAAALPMAIAAAHGNOKJAANOPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPOPFKAAOPKFKDAAKFAAAAAAAAAAAAAAKBAAAAAANJAAAAAABPAAAAAABPAAAAAAAMJBPAAALELMEIAALMPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPINMIAAINAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");

icon.Add(width, data);

customIcon.Add(icon);
newElement.Add(customIcon);

newElement.Add(classAt, idAt, paramAt, custIdAt);
refXElement.Add(newElement);

xDoc.Save(cust_file);

这会将元素添加到XML文件中。但是，当通过代码添加元素时，读取xml文件的应用程序似乎看不到该元素。但是，如果我手动复制并粘贴元素，应用程序确实会看到新元素。我不确定我的代码中是否有错误

原始XML

<LastLayout2 CompactMode="1" Schema="37">
    <CommandBars>
            <CommandBar Class="CXTPToolBar" BarID="200" Flags="63" Style="4194304" Title="Standard" MRUWidth="32767">
      <Controls>
        <Control Class="CXTPControlButton" Id="5864" Parameter="3000" />
        <Control Class="CXTPControlButton" Id="5866" Parameter="3001" />
        <Control Class="CXTPControlButton" Id="5868" Parameter="3002" />
        <Control Class="CXTPControlButton" Id="24322" BeginGroup="1" Parameter="3003" />
        <Control Class="CXTPControlButton" Id="24323" Parameter="3004" />
        <Control Class="CXTPControlButton" Id="24324" Parameter="3005" />
        <Control Class="CXTPControlButton" Id="24325" Parameter="3006" />
        <Control Class="CXTPControlButton" Id="24321" BeginGroup="1" TooltipText="Undo" DescriptionText="Undo" Parameter="3007" />
        <Control Class="CXTPControlButton" Id="24329" TooltipText="Redo" DescriptionText="Redo" Parameter="3008" />
        <Control Class="CXTPControlButton" Id="6184" BeginGroup="1" Parameter="3009" />
        <Control Class="CXTPControlButton" Id="6190" Parameter="3010" />
        <Control Class="CXTPControlButton" Id="6148" Parameter="3011" />
        <Control Class="CXTPControlButton" Id="6211" BeginGroup="1" Parameter="3012" />
        <Control Class="CXTPControlButton" Id="5796" BeginGroup="1" Parameter="3013" />
        <Control Class="CXTPControlButton" Id="5774" Parameter="3014" />
        <Control Class="CXTPControlButton" Id="5792" Parameter="3015" />
        <Control Class="CXTPControlButton" Id="5048" Parameter="3016" />
        <Control Class="CXTPControlButton" Id="5130" BeginGroup="1" Parameter="3017" />
        <Control Class="CXTPControlButton" Id="5936" Parameter="3018" />
        <Control Class="CXTPControlButton" Id="5844" Parameter="3019" />
        <Control Class="CXTPControlButton" Id="6170" BeginGroup="1" Parameter="3020" />
        <Control Class="CXTPControlButton" Id="6182" Parameter="3021" />
        <Control Class="CXTPControlButton" Id="6384" BeginGroup="1" Parameter="3022" />
        <Control Class="CXTPControlButton" Id="6385" Parameter="3023" />
        <Control Class="CXTPControlButton" Id="6386" Parameter="3024" />
        <Control Class="CXTPControlButton" Id="32769" BeginGroup="1" Parameter="3025" />
      </Controls>
    </CommandBar>
</CommandBars>
</LastLayout2>

所需的XML：

<LastLayout2 CompactMode="1" Schema="37">
    <CommandBars>
            <CommandBar Class="CXTPToolBar" BarID="200" Flags="63" Style="4194304" Title="Standard" MRUWidth="32767">
      <Controls>
        <Control Class="CXTPControlButton" Id="5864" Parameter="3000" />
        <Control Class="CXTPControlButton" Id="5866" Parameter="3001" />
        <Control Class="CXTPControlButton" Id="5868" Parameter="3002" />
        <Control Class="CXTPControlButton" Id="24322" BeginGroup="1" Parameter="3003" />
        <Control Class="CXTPControlButton" Id="24323" Parameter="3004" />
        <Control Class="CXTPControlButton" Id="24324" Parameter="3005" />
        <Control Class="CXTPControlButton" Id="24325" Parameter="3006" />
        <Control Class="CXTPControlButton" Id="24321" BeginGroup="1" TooltipText="Undo" DescriptionText="Undo" Parameter="3007" />
        <Control Class="CXTPControlButton" Id="24329" TooltipText="Redo" DescriptionText="Redo" Parameter="3008" />
        <Control Class="CXTPControlButton" Id="6184" BeginGroup="1" Parameter="3009" />
        <Control Class="CXTPControlButton" Id="6190" Parameter="3010" />
        <Control Class="CXTPControlButton" Id="6148" Parameter="3011" />
        <Control Class="CXTPControlButton" Id="6211" BeginGroup="1" Parameter="3012" />
        <Control Class="CXTPControlButton" Id="5796" BeginGroup="1" Parameter="3013" />
        <Control Class="CXTPControlButton" Id="5774" Parameter="3014" />
        <Control Class="CXTPControlButton" Id="5792" Parameter="3015" />
        <Control Class="CXTPControlButton" Id="5048" Parameter="3016" />
        <Control Class="CXTPControlButton" Id="5130" BeginGroup="1" Parameter="3017" />
        <Control Class="CXTPControlButton" Id="5936" Parameter="3018" />
        <Control Class="CXTPControlButton" Id="5844" Parameter="3019" />
        <Control Class="CXTPControlButton" Id="6170" BeginGroup="1" Parameter="3020" />
        <Control Class="CXTPControlButton" Id="6182" Parameter="3021" />
        <Control Class="CXTPControlButton" Id="6384" BeginGroup="1" Parameter="3022" />
        <Control Class="CXTPControlButton" Id="6385" Parameter="3023" />
        <Control Class="CXTPControlButton" Id="6386" Parameter="3024" />
        <Control Class="CXTPControlButton" Id="32769" BeginGroup="1" Parameter="3025" />
        <Control Class="CXTPControlButton" Id="0" Parameter="GLOBAL!QMS_Launcher.Main" CustomIconId="68267">
            <CustomIcon>
                <Icon Width="16" Data="ABAAAAAAFCAAAAAAEDAAICAAAAAAABAAAAAAABAAAAAABAAAACAADAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPPAAAAPPAAAAPPAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPGAAAAAAJNAAAAAAFCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANAAAAAAAHFAAAAAACHAAAAAAALAAAAAAPPAAAAAAJPAAAAAAHCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPFAAAAAAJOAAAAAAPPAAAAAAPPAAAAAAPPAAAAAALOABJAAACGDNJIAADNGJCGAAGJGAEAAAGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGDAAAAAANPAAAAAAMPAAAAAAJLAAAAAAMHAAAAAAFFAAAAAAODAAAAAAAKMGFEAAEIPPGKAAPPPHDFAAPHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEMAAAAAAPPAAAAAAPGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANGAAAAAAPPCBMAAAIFIHOEAAIHJFJDAAJFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOOAAAAAAEPAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAPHAAAAAAPPGBOAAAKGILHHAAILILHHAAILJJEGAAJJFEMCAAFEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEPAAAAAAEOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHJAAAAAAPPGCJBAAAHPPGKAAPPPPGKAAPPPPGKAAPPMPEKAAMPPDJCAAPDAAAAAAAAAAAAAAAAAAAAAAOMAAAAAAPPAAAAAAJBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAALLAAAAAAPPBCFBAAKFILHHAAILILHHAAILILHHAAILILHHAAILKGFEAAKGAAAAAAAAAAAAAAAAAAAAAANJAAAAAAPPAAAAAANMAAAAAABCAAAAAANBAAAAAABIAAAAAAPPAAAAAAHOAEKCAAMEIHOEAAIHIHOEAAIHIHOEAAIHIHOEAAIHJGDEAAJGGCJBAAGCAAAAAAAAAAAAAAFBAAAAAADOAAAAAAPPAAAAAAPPAAAAAAPPAAAAAAPPAAAAAALPMAIAAAHGNOKJAANOPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPOPFKAAOPKFKDAAKFAAAAAAAAAAAAAAKBAAAAAANJAAAAAABPAAAAAABPAAAAAAAMJBPAAALELMEIAALMPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPPPGKAAPPINMIAAINAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" />
             </CustomIcon>
         </Control>
      </Controls>
    </CommandBar>
</CommandBars>
</LastLayout2>

很可能您没有正确设置XML名称空间，但如果没有看到实际和预期的XML输出，就无法确定是否正确。@AlexeiLevenkov我添加了XML。原件顶部没有一个标记。但当我运行我的代码时，它会运行。也许这就是问题的原因？不应该。。。感谢您的更新-希望有人会尝试您的代码以查看差异。首先：您的XML示例无效，因为结束标记不匹配。第二：如果结束标记正确，那么您的代码将正确地从原始XML生成所需的XML，至少

XNode.DeepEquals

say so.@PetSerAl谢谢您，实际的XML具有该标记。我一定是在减少XML长度时意外删除了它。你刚才提到的那个标签不见了吗？