I've been waiting for the solution to the same problem….i don't think its out yet. Check this out from 09/2009 till 10/2011

I'm temporarily using the solution posted here :

/blog/?page_id=393/bugs/jqgrid-3-8-1-celledit-enter-key-saves-cell-instead-of-adding-new-line-in-textarea-with-solution/

I'm using JQGrid 4.1.1. I had to REPLACE:

if (e.keyCode === 13) {$($t).jqGrid(“saveCell”,iRow,iCol);}//Enter

WITH

if (e.keyCode === 13 && (e.target.tagName === undefined || e.target.tagName != 'TEXTAREA')) {$($t).jqGrid(“saveCell”,iRow,iCol);}//Enter

Another common issue with the textarea is that on Save all the line breaks go away. Temp solutions from here:

http://www.trirand.net/forum/default.aspx?g=posts&t=337

I had to REPLACE:

if($t.p.treeGrid && $(“.tree-wrap”,$(tcell)).length>0) {

tony said:

Hello,

The solution is a little tricky.

1. Set your default datatype to json or xml.

2. define loadComplete event like this

loadComplete: function () {

$(“#mygrid”).setGridParam({datatype:'local'});

}

3. define onPaging event like thiss

onPaging : function(which_button) {

$(“#mygrid”).setGridParam({datatype:'json'});

}

Enjoy!

Do not forget to set sorttype in colModel in order to sort work correct

Regards

Tony

Thanks, this works for me!