title: Insert paragraph between text of richtextbox and change font and color of added paragraph
body: <p>my text is in richtextbox :</p>
  
  <pre><code>&lt;Parag1 Level="One"&gt;
  First text of parag1. Second text of parag1.
  &lt;/Parag1&gt;
  &lt;Parag2 Level="Two"&gt;
  First text of parag2. Second text of parag2.
  &lt;/Parag2&gt;
  &lt;Parag3 Level="Footer"&gt;
  First text of parag3. Second text of parag3.
  &lt;/Parag3&gt;
  &lt;Parag4 Level="Three"&gt;
  First text of parag4. Second text of parag4.
  &lt;/Parag4&gt;
  </code></pre>
  
  <p>The font of all tags with level One, Two, Three is Arial, Size = 9, Color = Red Example : <code>&lt;Parag1 Level="One"&gt;</code> Or <code>&lt;/Parag4&gt;</code></p>
  
  <p>The font of text between tags with level One, Two, Three is MicrosoftNewRomans, Size = 12, Color = Black Example : <code>First text of parag2. Second text of parag2.</code></p>
  
  <p>The font of text between tags with level Footer is Tahoma, Size = 10, Color = Blue Example : <code>First text of parag3. Second text of parag3.</code></p>
  
  <p>I want add this paragraph between tags 3 &amp; 4. example :</p>
  
  <pre><code> &lt;NewParag5 Level="Footer"&gt;
  This tags between 3 and 4.
  &lt;/NewParag5&gt;
  </code></pre>
  
  <p>Question : How can I do it with same font and color for seperate part of paragraph. this mean without change font and color of my other text, I can insert paragraph to richtextbox and then for tags change font or color to red, for text change to blue.</p>
  
  <p>Please help me for c# and winforms richtextbox.</p>
  
  <p>Thank's.</p>
  
  <p>Question 2 : How to add a paragraph between text, that font and color of parts of paragraph are set to tag font style &amp; text save ago style(font &amp; color).</p>