Sorry, the click event should be:

select table1
thisform.grid1.ReadOnly=.f.
append blank
thisform.grid1.setfocus()

thisform.thirdgrid.setfocus() is wrong.

>Dear all,
>
>I have a table which's first field is Date. I use a grid to contain this table in a form(named form2). Recently I got the following error message.
>"INDEX internal consistency error", then after I clicked the HELP, it will show:
>"internal consistency error (Error 1462)
>Internal product error. Visual FoxPro closes all open files and exits.
>
>· Visual FoxPro cannot reconcile two opposing internal states in the product.
>
>Record your recent actions while using Visual FoxPro and then call Microsoft Support."
>The Visual Foxpro will close.
>I have a button in my form.
>The click event is:
>
>select table1
>thisform.grid1.ReadOnly=.f.
>append blank
>thisform.thirdgrid.setfocus()
>
>After clicking this button, the focus will be on the field of Date. When I use the arrow key to scroll up to the first data, whenever I scroll up again, it will output the above error. And if I entered an empty date and scroll down, the error will happen too.
>
>I have 3 indexings before the form is shown. One of them is as below, the other 2 are similar.
>
>select table1
>=cursorsetprop("buffering",3,"table1")
>index on price to price2
>=cursorsetprop("buffering",5,"table1")
>locate for code=thisformset.form1.inputcode.value and code2=thisformset.form1.inputcode2.value
>thisformset.form2.show
>
>Anyone can help me about this complicated problem?