Hi.Handy,Is there anything new about this?

 I have solved The problem.

function HideColumn()//hide cloumn        
{            var grid = ISGetObject("WebGrid1");

            var col = grid.RootTable.Columns.GetNamedItem("Cloumn Name");          
            col.Set("Visible", "false", true);
            grid.RefreshAll();
        }

It is a pity for hear that.I solve the problem by my way.although it is not a perfect way.
Part code is: 
OnAfterExitEditMode="Webgrid_Updaterow"

function Webgrid_Updaterow(controlId) {

    var gtest = document.getElementById(controlId + "_of");
    var grid = ISGetObject(controlId);
    gtest.onclick = function() {   
    if (event.srcElement == null)
               { ; }
          else if (event.srcElement.lastChild == null)
               { ; }
            else  if (event.srcElement.lastChild.tagName == null)
            { ; }
            else  if (event.srcElement.lastChild.tagName == "TABLE") {
                 grid.ExitEdit(1, 0, 1);
          }
        
    }
}

It is very sad to hear that .Can the further WebUI version set ForeColor of webinput???