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C#实现将TextBox绑定为KindEditor富文本

2024-04-17 | 佚名 | 点击:

关于 KindEditor

KindEditor 基于JavaScript 编写,可以与众多WEB应用程序结合。KindEditor 依靠出色的用户体验和领先的技术提供富文本编辑功能,是一款非常受欢迎的HTML在线编辑器。其呈现如下图:

绑定设计

Asp.net 应用程序 WebUI 中的 TextBox 控件是我们经常使用的控件之一,为便于后端代码统计一调用与管理,可在服务端通过绑定 KindEditor.js 的方式,将 TextBox 控件直接转化为富文本编辑框,调用示例代码如下:

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KindEditor KindEditor = new KindEditor(Page);

KindEditor.init(new string[] { x_fbnr.ID });

创建 KindEditor 类,通过 init 方法初始化即可。

init方法提供了一个参数,string[] 数组,传递要转化的 TextBox 的 ID,并且可以同时传递 Page 页面上的 多个 ID ,以转化多个 TextBox。

实现代码

创建KindEditor类,代码如下:

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public class KindEditor

            {

                Page CurrentPage = null;

                public KindEditor(object page)

                {

                    if (page == null)

                    {

                        return;

                    }

                    CurrentPage = (Page)page;

                }

                public string init(string[] idList)

                {

                    return init(idList, null);

                }

                public string init(string[] idList,Literal writeControl)

                {

  

                    HtmlLink cssLink = new HtmlLink();

                    cssLink.Attributes.Add("rel", "stylesheet");

                    cssLink.Href = "/common/kindEditor/themes/default/default.css";

                    CurrentPage.Header.Controls.Add(cssLink);

  

                    HtmlLink cssLink2 = new HtmlLink();

                     

                    cssLink2.Attributes.Add("rel", "stylesheet");

                    cssLink2.Href = "/common/kindEditor/plugins/code/prettify.css";

                    CurrentPage.Page.Header.Controls.Add(cssLink2);

  

  

                    HtmlGenericControl sc = new HtmlGenericControl("script");

                    sc.Attributes.Add("charset", "uft-8");

                    sc.Attributes.Add("src", "/common/kindEditor/kindeditor.js");

                     

  

                    CurrentPage.Page.Header.Controls.Add(sc);

  

                    HtmlGenericControl sc2 = new HtmlGenericControl("script");

                    sc2.Attributes.Add("charset", "uft-8");

                    sc2.Attributes.Add("src", "/common/kindEditor/lang/zh_CN.js");

                    CurrentPage.Page.Header.Controls.Add(sc2);

  

                    HtmlGenericControl sc3 = new HtmlGenericControl("script");

                    sc3.Attributes.Add("charset", "uft-8");

                    sc3.Attributes.Add("src", "/common/kindEditor/plugins/code/prettify.js");

                    CurrentPage.Page.Header.Controls.Add(sc3);

  

                    string js = fLoadFromFile(CurrentPage.Request.PhysicalApplicationPath + "common/kindEditor/init.js", Encoding.Default);

  

                    HtmlGenericControl sc4 = new HtmlGenericControl("script");

                    foreach (string id in idList)

                    {

                        sc4.InnerHtml += js.Replace("{0}", id);

                    }

                    CurrentPage.Page.Header.Controls.Add(sc4);

                    return "";

                }

                public string LoadFromFile(string PathFile,System.Text.Encoding encodtype)

                {

                    FileStream fs;

                    StreamReader newsfile;

                    String linec,x_filecon="";

                    fs=new FileStream(PathFile,FileMode.Open);

                    newsfile=new StreamReader(fs,encodtype);

                    try

                    {

                        linec=newsfile.ReadLine();

         

                        while(!(linec==null))

                        {

                            x_filecon+=linec+"\r\n";

                            linec=newsfile.ReadLine();

                        }

                        newsfile.Close();

                        fs.Close();

                    }

                    catch(Exception)

                    {

                        newsfile.Close();

                        fs.Close();

                    }

                    finally

                    {

                        newsfile.Close();

                        fs.Close();

                    }

                    return x_filecon;

  

                }//LoadFromFile Function

  

            }

创建类时请务必传递 Page类的实例化(即System.Web.UI.Page),而且 header 部分请务必添加 RunAt="server" 标记,如下代码示例:

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<html>

   <head runat="server">

   </head>

  

....

  

</html>

init 方法会在服务器header对象重点引入如下文件并进行动态添加:

序号 文件 控件类型
1 /common/kindEditor/themes/default/default.css HtmlLink
2 /common/kindEditor/plugins/code/prettify.css HtmlLink
3 /common/kindEditor/kindeditor.js HtmlGenericControl
4 /common/kindEditor/lang/zh_CN.js HtmlGenericControl
5 /common/kindEditor/plugins/code/prettify.js HtmlGenericControl
6 /common/kindEditor/init.js HtmlGenericControl

其中第6项 init.js 为读取内容后,替换传入的对应 id ,并动态添加 header 中。 

小结

kindEditor在某些浏览器上在工具栏点击弹出类框有时会出现一些兼容性问题,无法正确定位显示位置而无法使用,可试图通过个点击全屏按钮暂时解决,如下图:

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