如何在FlowDocument中隐藏段落？ [英] How can I hide a Paragraph in a FlowDocument?

问题描述

有没有办法使用数据绑定来显示或隐藏FlowDocument中的段落？ （我想使用MVVM，但使用FlowDocument作为我的观点。）

段落没有Visibility属性。我不知道还有什么要找的。

解决方案

我试过Chris Bova的答案，但有几个问题： / p>

1. 文本选择不正确


2. 内部的文本不像段

我的解决方案是从流程文档添加和删除段落。

步骤是：

1. 命名流文档（即flowDocument） / li>
   
2. 在您要隐藏的段落之前命名项目（即previousBlock）


3. 命名要隐藏的段落（即hideParagraph）

然后：

  if（< hide段落>）
 {
 if（previousBlock.NextBlock == hideParagraph）
 {
 flowDocument.Blocks.Remove（hideParagraph）; 
} 
} 
 else 
 {
 if（previousBlock.NextBlock！= hideParagraph）
 {
 flowDocument.Blocks.InsertAfter（previousBlock， hideParagraph）; 
} 
} 
  

Is there any way to use databinding to show or hide a Paragraph within a FlowDocument? (I want to use MVVM, but with a FlowDocument as my view.)

Paragraph doesn't have a Visibility property. I'm not sure what else to look for.

解决方案

I tried Chris Bova's answer, but it had a couple problems:

1. Text selection didn't work right
2. The text inside didn't flow like a paragraph

My solution was to add and remove the paragraph from the flow document.

The steps are:

1. Name the flow document (ie flowDocument)
2. Name the item before the paragraph you want to hide (ie previousBlock)
3. Name the paragraph you want to hide (ie hideParagraph)

Then:

        if (<hide paragraph>)
        {
            if (previousBlock.NextBlock == hideParagraph)
            {
                flowDocument.Blocks.Remove(hideParagraph);
            }
        }
        else
        {
            if (previousBlock.NextBlock != hideParagraph)
            {
                flowDocument.Blocks.InsertAfter(previousBlock, hideParagraph);
            }
        }

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