I try to create a new DNN Text Editor from code behind using following code

DotNetNuke.UI.UserControls.TextEditor te = new DotNetNuke.UI.UserControls.TextEditor(); PlaceHolder.Controls.Add(te);

But I got following error on the event viewer

DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.UI.UserControls.TextEditor.PopulateLists() at DotNetNuke.UI.UserControls.TextEditor.Page_Load(Object sender, EventArgs e)

After two hours search, I found we need using following code to make it work

DotNetNuke.UI.WebControls.DNNRichTextEditControl te = new DotNetNuke.UI.WebControls.DNNRichTextEditControl(); PlaceHolder.Controls.Add(te);