Hi Reza,

>I have a cursor that I fill it with some data and it connected to one grid and some textbox in my form. I have a SAVE command button on my form that user must click on it , if he/she made any changes in data.
>How I can know that user changed the data? ( or How I can know that user changed the cursor content? )

If you don't want to check changes in individual fields, you could do something like this:

* in form.init save cursor state in property
Thisform.AddProperty([DataOnStart])
CURSORTOXML([myCursor],[Thisform.DataOnStart],1,1+2+4,0,[1])

* in 'save' procedure compare old vs. new
CURSORTOXML([myCursor],[lcDataOnSave],1,1+2+4,0,[1])

IF ThisForm.DataOnStart <> lcDataOnSave
    * Save your Cursor here
ENDIF 

However, I don't think, that it is a good idea to always save the complete cursor. You should check for changed records only and replace those in your database. So IMHO you should hang on to Craigs post.