I want to pass a value from TextBox to CkEditor for jQuery using Asp.net

I want to pass a value from TextBox to CkEditor for jQuery using Asp.net

Data function GetContents() { var oEditor = CKEDITOR.instances.editor1;
document.getElementById('<%=Hidden1.ClientID%>').value =
oEditor.getData(); }
here i passed value from ckEditor to asp.net control Hidden Field in the
similar way i want do viceverse from textbox to Ckeditor