VSTO Word內容控件-在運行時添加多個RichTextContentControls

Question

我正在創建一個Word加載項，該加載項允許用戶在Word文檔中選擇各種文本，然后單擊功能區上的按鈕，該按鈕將使用內容控件（富文本）包裝該文本。 最終，這些內容控件將被映射到XML。

到目前為止的代碼是這樣的：

public partial class Ribbon1
    {
        private RichTextContentControl titleRichTextControl;

        private void Ribbon1_Load(object sender, RibbonUIEventArgs e)
        {

        }

        private void addTitle_Click(object sender, RibbonControlEventArgs e)
        {
            AddRichTextControlAtSelection();
        }


        private void AddRichTextControlAtSelection()
        {
            word.Document currentDocument = Globals.ThisAddIn.Application.ActiveDocument;

           currentDocument.ActiveWindow.Selection.Range.Select();

           Document extendedDocument = Globals.Factory.GetVstoObject(currentDocument);

            titleRichTextControl = extendedDocument.Controls.AddRichTextContentControl("titleRichTextControl");
            titleRichTextControl.PlaceholderText = "Enter the title";
            titleRichTextControl.Title = "Title";
            titleRichTextControl.Tag = "title";

        }

    }

所有這些都很好，並且第一次單擊該按鈕即可。 但是，如果有多個“標題”（在這種情況下）需要添加，並且用戶再次按下該按鈕，則會引發錯誤：

The control cannot be added because a control with the name titleRichTextControl already exists in the Controls collection.

很明顯為什么會抱怨，但是我想不出允許多次單擊按鈕來生成相同類型（富文本內容控件）和相同名稱（例如“ title”）的多個內容控件的正確方法。 ）。

任何人都可以指出我正確的方向。

Answer 1

好的，這就是我最終的做法：

private void addTitle_Click(object sender, RibbonControlEventArgs e)
        {
            AddRichTextControlAtSelection();
        }


        int count = 0;
        private void AddRichTextControlAtSelection()
        {
            word.Document currentDocument = Globals.ThisAddIn.Application.ActiveDocument;

            Document extendedDocument = Globals.Factory.GetVstoObject(currentDocument);

            if (currentDocument.ContentControls.Count > 0)
            {

                currentDocument.ActiveWindow.Selection.Range.HighlightColorIndex = word.WdColorIndex.wdYellow;
                currentDocument.ActiveWindow.Selection.Range.Select();

                richTextControls = new List<RichTextContentControl>(); 

                foreach (word.ContentControl nativeControl in currentDocument.ContentControls)
                {
                    if (nativeControl.Type == Microsoft.Office.Interop.Word.WdContentControlType.wdContentControlRichText) 
                    {
                        count++;
                        RichTextContentControl tempControl = extendedDocument.Controls.AddRichTextContentControl("VSTORichTextControl" + count.ToString());
                        richTextControls.Add(tempControl);
                        tempControl.Title = "Title";
                        tempControl.Tag = "title";

                        break;
                     }
                }
            }

            else
            {
                RichTextContentControl VSTORichTextControl;
                VSTORichTextControl = extendedDocument.Controls.AddRichTextContentControl("VSTORichTextControl");
                VSTORichTextControl.PlaceholderText = "Enter the DM title";
                VSTORichTextControl.Title = "Title";
                VSTORichTextControl.Tag = "title";
            }

        }