Editor value in ASP.NET MVC Rich Text Editor Control

4 Mar 202511 minutes to read

Get and Set Value

Setting Values

You can set the initial content of the Rich Text Editor using the value property. There are two methods to accomplish this:

• Using the Value property directly.

• Using the ValueTemplate property allows you to customize the content of the Rich Text Editor.

Retrieving Values

To retrieve the editor contents, use the value property of Rich Text Editor.

CSHTML

@Html.EJS().RichTextEditor("defaultRTE").Value(ViewBag.value).Render()

<button id="getValueBtn" type="button" onclick="getEditorValue()" style="margin-top: 10px;">Get Editor Value</button>

<p><strong>Editor Content:</strong></p>
<div id="editorContent" style="border: 1px solid #ccc; padding: 10px; min-height: 50px;"></div>

<script>
    function getEditorValue() {
        var rteObj = document.getElementById("defaultRTE").ej2_instances[0];
        var content = rteObj.getHtml();
        document.getElementById("editorContent").innerHTML = content;
    }
</script>

Controller.cs

public class HomeController : Controller
{

    public ActionResult Index()
    {
        ViewBag.value = @"<p>Welcome to the Syncfusion Rich Text Editor</p>";
        return View();
    }
}

Autosave

The auto-save option in the Rich Text Editor allows the content to be automatically saved during idle periods after you have typed. Once this option is enabled, the editor will save the content based on the SaveInterval property’s value, which is specified in milliseconds.

The change event will be triggered if the content has been modified since the last saved state, ensuring consistent tracking of changes without manual intervention.

CSHTML

@Html.EJS().RichTextEditor("defaultRTE").SaveInterval(500).Value(ViewBag.value).Render()

Controller.cs

public class HomeController : Controller
{

    public ActionResult Index()
    {
        ViewBag.value = @"<p>The Syncfudion Rich Text Editor, a WYSIWYG (what you see is what you get) editor, is a user interface that allows you to create, edit, and format rich text content. You can try out a demo of this editor here.</p><p><b>Key features:</b></p><ul><li><p>Provides &lt;IFRAME&gt; and &lt;DIV&gt; modes.</p></li><li><p>Bulleted and numbered lists.</p></li><li><p>Handles images, hyperlinks, videos, hyperlinks, uploads, etc.</p></li><li><p>Contains undo/redo manager. </p></li></ul><div style='display: inline-block; width: 60%; vertical-align: top; cursor: auto;'><img alt='Sky with sun' src='https://cdn.syncfusion.com/ej2/richtexteditor-resources/RTE-Overview.png' width='309' style='min-width: 10px; min-height: 10px; width: 309px; height: 174px;' class='e-rte-image e-imginline e-rte-drag-image' height='174' /></div>";
        return View();
    }
}

Programmatic Content Access

You can use the GetHtml public method to retrieve the Rich Text Editor content.

  var editorValue = document.getElementById("defaultRTE").ej2_instances[0].GetHtml();

To fetch the Rich Text Editor’s text content, use GetText method.

  var editorValue = document.getElementById("defaultRTE").ej2_instances[0].GetText();

Encoded Editor Value

The EnableHtmlEncode property in the Rich Text Editor specifies whether the source code is displayed in an encoded format. Additionally, the Value property also returns the content in an encoded format. This feature is particularly useful when you want to ensure that HTML content is displayed safely without being interpreted by the browser.

CSHTML

@Html.EJS().RichTextEditor("defaultRTE").Value(ViewBag.value).EnableHtmlEncode(true).Render()

Controller.cs

public class HomeController : Controller
{

    public ActionResult Index()
    { 
        ViewBag.value = @"<p>Rich Text Editor is a WYSIWYG editing control which will reduce the effort for users while trying to express their formatting word content as HTML or Markdown format.</p><p><b>API’s:</b></p><ul><li><p>maxLength - allows restricting the maximum length to be entered.</p></li><li><p>readOnly - allows to change it as a non-editable state.</p></li><li><p>enabled - enable or disable the RTE component.</p></li><li><p>enableHtmlEncode - Get the encoded string value through value property and source code panel</p></li><li><p>getValue - get the value of RTE.</p></li><li><p>getSelection - get the selected text of RTE.</p></li><li><p>selectAll - select all content in RTE.</p></li></ul>";
        return View();
    }
}

Styling Editor Content

By default, the content styles of the Rich Text Editor are not included when retrieving the HTML value from the editor. This can result in the styles not being applied when using the HTML content outside of the editor. To ensure that the styles are correctly applied, you can copy and use the following styles directly in your application: These styles are used in the UI elements of the Rich Text Editor.

NOTE

Make sure to add a CSS class ‘e-rte-content’ to the content container.

.e-rte-content p {
  margin: 0 0 10px;
  margin-bottom: 10px;
}

.e-rte-content li {
  margin-bottom: 10px;
}

.e-rte-content h1 {
  font-size: 2.17em;
  font-weight: 400;
  line-height: 1;
  margin: 10px 0;
}

.e-rte-content h2 {
  font-size: 1.74em;
  font-weight: 400;
  margin: 10px 0;
}

.e-rte-content h3 {
  font-size: 1.31em;
  font-weight: 400;
  margin: 10px 0;
}

.e-rte-content h4 {
  font-size: 1em;
  font-weight: 400;
  margin: 0;
}

.e-rte-content h5 {
  font-size: 00.8em;
  font-weight: 400;
  margin: 0;
}

.e-rte-content h6 {
  font-size: 00.65em;
  font-weight: 400;
  margin: 0;
}

.e-rte-content blockquote {
  margin: 10px 0;
  margin-left: 0;
  padding-left: 5px;
}

.e-rte-content pre {
  background-color: inherit;
  border: 0;
  border-radius: 0;
  color: #333;
  font-size: inherit;
  line-height: inherit;
  margin: 0 0 10px;
  overflow: visible;
  padding: 0;
  white-space: pre-wrap;
  word-break: inherit;
  word-wrap: break-word;
}

.e-rte-content strong, .e-rte-content b {
  font-weight: 700;
}

.e-rte-content a {
  text-decoration: none;
  -webkit-user-select: auto;
  -ms-user-select: auto;
  user-select: auto;
}

.e-rte-content a:hover {
  text-decoration: underline;
}

.e-rte-content h3 + h4,
.e-rte-content h4 + h5,
.e-rte-content h5 + h6 {
  margin-top: 00.6em;
}

.e-rte-content .e-rte-image.e-imgbreak {
  border: 0;
  cursor: pointer;
  display: block;
  float: none;
  margin: 5px auto;
  max-width: 100%;
  position: relative;
}

.e-rte-content .e-rte-image {
  border: 0;
  cursor: pointer;
  display: block;
  float: none;
  margin: auto;
  max-width: 100%;
  position: relative;
}

.e-rte-content .e-rte-image.e-imginline {
  display: inline-block;
  float: none;
  margin-left: 5px;
  margin-right: 5px;
  max-width: calc(100% - (2 * 5px));
  vertical-align: bottom;
}

.e-rte-content .e-rte-image.e-imgcenter {
  cursor: pointer;
  display: block;
  float: none;
  margin: 5px auto;
  max-width: 100%;
  position: relative;
}

.e-rte-content .e-rte-image.e-imgleft {
  float: left;
  margin: 0 5px 0 0;
  text-align: left;
}

.e-rte-content .e-rte-image.e-imgright {
  float: right;
  margin: 0 0 0 5px;
  text-align: right;
}

.e-rte-content .e-rte-img-caption {
  display: inline-block;
  margin: 5px auto;
  max-width: 100%;
  position: relative;
}

.e-rte-content .e-rte-img-caption.e-caption-inline {
  display: inline-block;
  margin: 5px auto;
  margin-left: 5px;
  margin-right: 5px;
  max-width: calc(100% - (2 * 5px));
  position: relative;
  text-align: center;
  vertical-align: bottom;
}

.e-rte-content .e-rte-img-caption.e-imgcenter {
  display: block;
}

.e-rte-content .e-rte-img-caption .e-rte-image.e-imgright,
.e-rte-content .e-rte-img-caption .e-rte-image.e-imgleft {
  float: none;
  margin: 0;
}

.e-rte-content .e-rte-table {
  border-collapse: collapse;
  empty-cells: show;
}

.e-rte-content .e-rte-table td,
.e-rte-content .e-rte-table th {
  border: 1px solid #bdbdbd;
  height: 20px;
  min-width: 20px;
  padding: 2px 5px;
  vertical-align: middle;
}

.e-rte-content .e-rte-table.e-dashed-border td,
.e-rte-content .e-rte-table.e-dashed-border th {
  border-style: dashed;
}

.e-rte-content .e-rte-img-caption .e-img-inner {
  box-sizing: border-box;
  display: block;
  font-size: 16px;
  font-weight: initial;
  margin: auto;
  opacity: .9;
  position: relative;
  text-align: center;
  width: 100%;
}

.e-rte-content .e-rte-img-caption .e-img-wrap {
  display: inline-block;
  margin: auto;
  padding: 0;
  width: 100%;
}

.e-rte-content blockquote {
  border-left: solid 2px #333;
}

.e-rte-content a {
  color: #2e2ef1;
}

.e-rte-content .e-rte-table th {
  background-color: #e0e0e0;
}

See Also

• Implementing Prevention of cross-site scripting (XSS)