Outlook 中的 XML 功能区 - 使其显示在特定窗口上

我第一次尝试使用 XML 在 Outlook 中创建功能区，但无法具体找到如何告诉我的加载项我只希望功能区显示在资源管理器窗口上。

Advice?

Thanks.

我的 Ribbon1.XML 文件：

    <?xml version="1.0" encoding="UTF-8"?>
<customUI xmlns="http://schemas.microsoft.com/office/2009/07/customui" onLoad="Ribbon_Load">
  <ribbon>
    <tabs>
      <tab idMso="TabAddIns">
        <group id="MyGroup"
               label="My Group">
          <button idMso="Delete"/>
        </group>
      </tab>
      <tab idMso="TabMail">
        <group idMso="GroupMoveActions"
               visible="false">
        </group>
      </tab>
    </tabs>
  </ribbon>
</customUI>

弹出的神奇错误框显示：

测试OLaddin2 中的 CustomUI 运行时错误

Error found in CustomUI XML of "testingOLaddin2"

Line: 3
Column: 10
Error Code 0x80004005
Failed to find Office control by ID
ID: TabMail

根据请求，我的功能区生成代码：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using Office = Microsoft.Office.Core;

using System.Diagnostics;

namespace testingOLaddin2
{
    [ComVisible(true)]
    public class Ribbon1 : Office.IRibbonExtensibility
    {
        private Office.IRibbonUI ribbon;

        public Ribbon1()
        {
        }

        #region IRibbonExtensibility Members

        public string GetCustomUI(string ribbonID)
        {
            return GetResourceText("testingOLaddin2.Ribbon1.xml");
        }

        #endregion

        #region Ribbon Callbacks
        //Create callback methods here. For more information about adding callback methods, select the Ribbon XML item in Solution Explorer and then press F1

        public void Ribbon_Load(Office.IRibbonUI ribbonUI)
        {
            this.ribbon = ribbonUI;
        }


        #endregion

        #region Helpers

        private static string GetResourceText(string resourceName)
        {
            Assembly asm = Assembly.GetExecutingAssembly();
            string[] resourceNames = asm.GetManifestResourceNames();
            for (int i = 0; i < resourceNames.Length; ++i)
            {
                if (string.Compare(resourceName, resourceNames[i], StringComparison.OrdinalIgnoreCase) == 0)
                {
                    using (StreamReader resourceReader = new StreamReader(asm.GetManifestResourceStream(resourceNames[i])))
                    {
                        if (resourceReader != null)
                        {
                            return resourceReader.ReadToEnd();
                        }
                    }
                }
            }
            return null;
        }

        #endregion
    }
}

这取决于您用于创建插件和功能区的方法。如果您正在使用

IRibbonExtensibility.GetCustomUI(string RibbonId)

方法，如果 RibbonId 参数具有值，您可以通过仅返回功能区 xml 来完成此操作

"Microsoft.Outlook.Explorer"

Edit

对代码进行以下更改可能会起作用：

public string GetCustomUI(string ribbonID)
{
  if (ribbonID == "Microsoft.Outlook.Explorer")
    return GetResourceText("testingOLaddin2.Ribbon1.xml");

  return null; // if problems here, try return string.Empty
}