Convert the emty string to null when extracting values for inserting, updating, deleting

Get the current colum editor. If the column editor is not assigned at the moment the column will search for the ColumnEditorID on the page or should create its default column editor

Gets or sets a default value for the column when the row is in Insert mode

Force KaxGrid to extract values from EditableColumns that are ReadOnly (or IsEditable is false).

Gets or sets the readonly status of the column. The column will be displayed in browser mode (unless its Visible property is false) but will not appear in the edit-form.