无法在最佳段落格式化过程中重新输入文本格式化引擎。

[E次奥]

RT； WPF程序；

RichTextBox 输入的过程中突然出现的异常，搞不懂是什么情况？？？

求帮助！

[threenewbee]

你要是用英文版vs，错误提示直接google就能解决了，你这中文的错误提示，鬼知道了。

[E次奥]

引用 1 楼 caozhy 的回复:

你要是用英文版vs，错误提示直接google就能解决了，你这中文的错误提示，鬼知道了。

我找到了错误的源码，但是不知道怎么解决？

 /// <summary>
        /// Acquire a free TextFormatter context for complex line operation
        /// </summary>
        /// <param name="owner">object that becomes the owner of LS context once acquired</param>
        /// <param name="ploc">matching PLOC</param>
        /// <returns>Active LS context</returns>
        /// <SecurityNotes>
        /// Critical - this sets the owner of the context
        /// Safe     - this doesn't expose critical info
        /// </SecurityNotes>
        [SecurityCritical, SecurityTreatAsSafe]
        internal TextFormatterContext AcquireContext(
            object      owner,
            IntPtr      ploc
            )
        {
            Invariant.Assert(owner != null);
 
            TextFormatterContext context = null;
 
            int c;
            int contextCount = _contextList.Count;
 
            for (c = 0; c < contextCount; c++)
            {
                context = (TextFormatterContext)_contextList[c];
 
                if (ploc == IntPtr.Zero)
                {
                    if(context.Owner == null)
                        break;
                }
                else if (ploc == context.Ploc.Value)
                {
                    // LS requires that we use the exact same context for line
                    // destruction or hittesting (part of the reason is that LS
                    // actually caches some run info in the context). So here
                    // we use the actual PLSC as the context signature so we
                    // locate the one we want.
 
                    Debug.Assert(context.Owner == null);
                    break;
                }
            }
 
            if (c == contextCount)
            {
                if (contextCount == 0 || !_multipleContextProhibited)
                {
                    //  no free one exists, create a new one
                    context = new TextFormatterContext();
                    _contextList.Add(context);
                }
                else
                {
                    // This instance of TextFormatter only allows a single context, reentering the
                    // same TextFormatter in this case is not allowed.
                    //
                    // This requirement is currently enforced only during optimal break computation.
                    // Client implementing nesting of optimal break content inside another must create
                    // a separate TextFormatter instance for each content in different nesting level.
                    throw new InvalidOperationException(SR.Get(SRID.TextFormatterReentranceProhibited));
                }
            }
 
            Debug.Assert(context != null);
 
            context.Owner = owner;
            return context;
        }
 

这个是微软的代码