What will happen when a cell is double clicked in excel?

Question

What will happen when a cell is double clicked in excel?

I want to know this because i have to control entering data in cells in my excel viewer in this case that the user is not allowed to enter any thing in a cell unless he double clicked on it.

I used the following code to protect the active sheet from entering data without double clicking:

myActiveWorksheet.Protect("password", Type.Missing, true, true, Type.Missing, true,
 Type.Missing,
 Type.Missing,
 Type.Missing,
 Type.Missing,
 Type.Missing,
 Type.Missing,
 Type.Missing,
 false, false, true);

It works fine and do what exactly i want.

But the problem occurs just when the user double clicking on a cell.I have wrote the following code in SheetBeforeDoubleClick event handler of the ActiveWorkbook to unprotect the sheet so the user could enter his data in the cell :

myActiveWorksheet.Unprotect("password");
target.Locked = false;

and also the code below in SheetChange event handler to protect it again :

target.Locked = true;
myActiveWorksheet.Protect("password", Type.Missing, true, true, Type.Missing, true,
    Type.Missing,
    Type.Missing,
    Type.Missing,
    Type.Missing,
    Type.Missing,
    Type.Missing,
    Type.Missing,
    false, false, true);

However the second protection code(I mean the one in SheetChange event handler) does not works fine so the user could type in each cells with just one click on it.

I have 2 guesses about the reason:

1)Something happens in double clicking process with excel that causes the sheet will be unprotected.

2)The target parameter of SheetChange event handler does not point to the changed cell.

Answer 1

Ey Val...

I found my solution. I should use

myActiveWorksheet.Cells.Locked = true;

instead of

target.Locked = true;

in SheetChange event handler.