Question : C# .Net

What is the code below doing? Can you explain each line?
"grdViewAccountUsers" is a child grid.

if (grdViewAccountUsers.RowCount == 0)
            {
                tblUsers.Rows.Add(new object[] { "NONE" });
                grdColUsersAccountNum.ColumnEdit = null;
            }

Answer : C# .Net

check the link
http://documentation.devexpress.com/#WindowsForms/DevExpressXtraGridColumnsGridColumn_ColumnEdittopic