從字符串格式化Html代碼

我基本上有一些來自某些html代碼的數據庫的字符串。現在我想在一個asp.net網頁的textarea上顯示html代碼，用戶可以在其中編輯包含縮進等的html代碼......並且用戶可以將html代碼保存回數據庫。從字符串格式化Html代碼

我已閱讀過有關使用非託管代碼的TidyManaged，我不想使用非託管代碼。

有一些示例代碼，或類似網站這也解釋了這種格式化的html代碼 - Html Formatter

任何方向或幫助將不勝感激。

編輯：

我只想html標籤縮進記解析HTML字符串可能不會效法軸承這是罰款，這種應用。

使用的HTML字符串的一個例子 -

string a = "<html><body><h1>hello</h1></body></html>

輸出應該如下

<html> 
    <body> 
    <h1> 
     hello 
    </h1> 
    </body> 
</html>

來源

2013-08-06 SpaceApple

請訪問http://www.altafkhatri.com/Technical/How_To_Insert_HTML_Tags_In_TextArea/Insert_HTML_Code/In_TextArea –

每個HTML標籤都會有一個 '>' 符號。您可以使用子字符串並在'>'後附加新的行語句。

來源

2013-08-06 11:28:00 Sasidharan

這是漫長的，但我認爲它的基本需求的伎倆。我決定推出自己的，而使用圖書館......也許不是最高效的代碼:)

/// <summary> 
    /// This function creates an indented format of HTML with new lines for all elements and text. Errors result in the original text being returned. 
    /// </summary> 
    private static string FormatHtml(string content) 
    { 
     string original = content; 
     string open = "<"; 
     string slash = "/"; 
     string close = ">"; 

     int depth = 0; // the indentation 
     int adjustment = 0; //adjustment to depth, done after writing text 

     int o = 0; // open  < index of this character 
     int c = 0; // close  > index of this character 
     int s = 0; // slash / index of this character 
     int n = 0; // next  where to start looking for characters in the next iteration 
     int b = 0; // begin  resolved start of usable text 
     int e = 0; // end  resolved end of usable test 

     string snippet; 

     try 
     { 
      using (StringWriter writer = new StringWriter()) 
      { 
       while (b > -1 && n > -1) 
       { 
        o = content.IndexOf(open, n); 
        s = content.IndexOf(slash, n); 
        c = content.IndexOf(close, n); 
        adjustment = 0; 

        b = n; // begin where we left off in the last iteration 
        if (o > -1 && o < c && o == n) 
        { 
         // starts with "<tag>text" 
         e = c; // end at the next closing tag 
         adjustment = 2; //for after this node 
        } 
        else 
        { 
         // starts with "text<tag>" 
         e = o - 1; // end at the next opening tag 
        } 

        if (b == o && b + 1 == s) // ?Is the 2nd character a slash, this the a closing tag: </div> 
        { 
         depth -= 2;//adjust immediately, not afterward ...for closing tag 
         adjustment = 0; 
        } 

        if ((s + 1) == c && c == e) // don't adjust depth for singletons: <br/> 
        { 
         adjustment = 0; 
        } 



        //string traceStart = content.Substring(0, b); 
        int length = (e - b + 1); 
        if (length < 0) 
        { 
         snippet = content.Substring(b); // happens on the final iteration 
        } 
        else 
        { 
         snippet = content.Substring(b, (e - b + 1)); 
        } 
        //string traceEnd = content.Substring(b); 


        if (snippet == "<br>" || snippet == "<hr>") // don't adjust depth for singletons which lack slashes: <br> 
        { 
         adjustment = 0; 
        } 

        //Write the text 
        if (!string.IsNullOrEmpty(snippet.Trim())) 
        { 
         //Debug.WriteLine(snippet); 
         writer.Write(Environment.NewLine); 
         if (depth > 0) writer.Write(new String(' ', depth)); // add the indentation 
         writer.Write(snippet); 
        } 

        depth += adjustment; //adjust for the next line which is likely nested 

        n = e + 1; // the next iteration start at the end of this one. 

       } 

       return writer.ToString(); 
      } 
     } 
     catch (Exception ex) 
     { 
      Log("Unable to format html. " + ex.Message); 
      return original; 
     } 
    }

來源

2017-07-18 02:12:13

從字符串格式化Html代碼

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