| **Navigation:**  [[abc library reference.htm|ABC Library Reference]] > FieldPairsClass > FieldPairsClass Methods >====== AssignLeftToRight (copy from "left" fields to "right" fields) {{c6h0009.jpg|C6H0009.jpg}} ====== | [[addpair  add a field pair fieldpairsclass .htm|{{btn_prev_n.gif|Previous page}}]][[abc library reference.htm|{{btn_home_n.gif|Return to chapter overview}}]][[assignrighttoleft  copy from  right  fields to  left  fields .htm|{{btn_next_n.gif|Next page}}]] |
|  ||

**AssignLeftToRight**

{{blk2blue.jpg|blk2blue.jpg}}

The **AssignLeftToRight **method copies the contents of each "left" field to its corresponding "right" field in the List property.

**Implementation:**

For AddPair pairs, the "left" field is the //first //(left) parameter of the AddPair method; the "right" field is the //second //(right) parameter of the AddPair method. For AddItem pairs, the "left" field is the //only //parameter of the AddItem method. The "right" field is the FieldPairs supplied copy of the "left" field.

**Example:**

** Fields.AddPair(CUST:Name,  CustQ.Name)  !establish Name pair**

** Fields.AddPair(CUST:Phone, CustQ.Phone) !establish Phone pair**

** Fields.AddPair(CUST:ZIP,  CustQ.ZIP)    !establish ZIP pair**

** !some code**

** IF ~Fields.Equal                        !compare field pairs**

**  CASE MESSAGE('Abandon Changes?',,,BUTTON:Yes+BUTTON:No)**

**  OF BUTTON:No**

**   Fields.AssignRightToLeft     !copy changes to CUST (write) buffer**

**  OF BUTTON:Yes**

**   Fields.AssignLeftToRight     !restore original to CustQ (display) buffer**

**  END**

** END**

**See Also:**     [[addpair  add a field pair fieldpairsclass .htm|AddPair]], [[additem   add a field pair from one source field .htm|AddItem]], [[list  recognized field pairs .htm|List]]