>In my form design, I have one textbox and one Grid. I want user input the condition for SQL in textbox. And I want my Grid Refresh the SQL condition after the user input the condition in textbox. Please suggest me how do I do ?

Suppose you have 3 textboxes (you have one) as txt1, txt2, txt3 referring to fields fld1, fld2, fld3 in your SQL :

Grid.init
with this
  .recordsourcetype = 4 && SQL
  .recordsource = "select * from mytable "+;
     "where fld1 = trim(thisform.txt1.value) " +;
     "and fld2 = trim(thisform.txt2.value) " +;
     "and fld3 = trim(thisform.txt3.value) " +;
     "into cursor grdCursor"
endwith

* Lostfocus of textboxes
thisform.mygrid.refresh

Cetin