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to make checkbox invisible

Hi
How do i make the checkbox created using mygrid.setColTypes("ch") as invisible??ii want the checkbox to be hidden for few rows..how do i do this?
Thanks

You can specify different types for each cell, it can be defined directly in XML or by js command.

In js
    mygrid.setColTypes("ch")
In XML
    <row id="1"><cell>1</cell></row>
    <row id="2"><cell type="ro"></cell></row>

As result, cell in second row will be rendered as "ro"  - empty cell.

This is not working.Am using js.So send me the js script if possible.

From js code, the same can be done as
   
    grid.addRow(some_id,values);
    grid.setCellExcellType(some_id,index,"ro")
    grid.cells(some_id,index).setValue("")

where index - index of column, where checkbox need to be hidden
Beware that setCellExcellType available only in pro edition of grid

I have the pro version but the second column in my grid is of type tree.Will this not work if its  a tree grid?I tried the scripts mentioned but it does not seem to work in a tree grid.(Working perfectly otherwise)

In case of treegrid - the tree column is mandatory ( it is define structure of hierarchy ), while it technically possible to change its type as well - it may result in lost of hierarchy structure and not officially supported.

Usage of the same command, against any other column ( non-tree ) in treegrid may work the same as in plain grid.
If you are using command against some item in closed branch ( or in case of smart rendering ) it may be necessary to add one more command

    grid.getRowById(some_id); //render row , if it not rendered yet
    grid.setCellExcellType(some_id,index,"ro")
    grid.cells(some_id,index).setValue("")

An extract of my source:

mygrid2.addRow('1111',['0','&nbsp;1111',
                                            '&nbsp;TEST'],'11',null,"blank.gif",true);
                                            
 mygrid2.getRowById('1111');
 mygrid2.setCellExcellType('1111',"0","ro");
mygrid2.cells('1111',0).setValue('');
                                            
mygrid2.setRowTextStyle('1111',"height:18px");
                                    
mygrid2.addRow('2222',['0','&nbsp;2222','&nbsp;CHILD'],'12','1111',"blank.gif",false);
 mygrid2.setRowTextStyle('2222',"height:18px");
                                        
mygrid2.stopFastOperations();


Its setting properly in the source but its still displaying the checkbox in the first column for row id 1111.
I have added whatever you have asked me to add.But still not working,

Most probably issue caused by using "fast operation" extension.
Without it all works correctly - sample with same code an in you snippet - sent by email.

Thanks a lot.Its working fine if i remove the fast operations.