Hello Markus,

Unfortunately only CellStyle is supported for clumns and EditCellStyle is global for the entire band. So while it is still possible to have edit mode align to right, it will be active for the entire band. 

            <igtbl:UltraGridBand>
                    <EditCellStyle CustomRules="text-align: right;">
                    </EditCellStyle>
                    <Columns>
                        <igtbl:UltraGridColumn BaseColumnName="Address" IsBound="True" Key="Address">
                            <CellStyle CustomRules="text-align: right;">
                            </CellStyle>                            
                            <Header Caption="Address">
                                <RowLayoutColumnInfo OriginX="1" />
                            </Header>
                        </igtbl:UltraGridColumn>
                    </Columns>
                </igtbl:UltraGridBand> 

This is still doable though, but a little bit tricky. It requires hooking the AfterEnterEditModeHandler client side event handler, checking if the cell currently edited is in the desired column and if so, changing the alignment of the edit element (Grid Client ID + "_tb") to right. Here is some sample code for that

<DisplayLayout> 

        <ClientSideEvents AfterEnterEditModeHandler="enterEditMode"/>

</DisplayLayout>
     
    

    
    <script type="text/javascript">
    
    function enterEditMode(gridName, cellID)
    {
        var cell = igtbl_getCellById(cellID);
        var grid = igtbl_getGridById(gridName);
        var columnKey = cell.Column.Key;               
        var editElement = document.getElementById(gridName + "_tb");        
        
        if (columnKey == "Address")
        {
            editElement.style.textAlign = "right";
        }
        else
        {
            editElement.style.textAlign = "left";   
        }                
    }

 </script>