The problem with that approach is that you're assuming that the cells in the
"UsedRange" that do not have an "X" in them have some other value.
If, for example, all of column "A" is blank,
and the user places an "X" in column "A" for each row in which
he wants to unlock specific cells in that row,
this code would first,remove the "X's", then unlock all rows!
So, I think we need to go back to the original question...
with regard to looping.
There are several different kinds of looping methods.
the decision on which one to use will primarily be influenced by the specific
situation.
In this case, Rich, you want to loop through all of your rows, looking for an
"X" in a specific column.
The simplest form a the loop
is:
For RowNum = FirstRow to LastRow
...
Next RowNum
The trick here is to figure out what your FirstRow and LastRow is.
There are seveal ways to do this.
Now, if you currenlty have 5,000 rows and you know you'll NEVER have more than
5,000 rows,
then you can simply loop from RowNum = 1 to 5000.
I the number of rows changes, you could ALWAYS just enter a very large number
(64,000 for Excel2003, 1,000,000 for 2007-2010)
But this is a waste of cpu cycles, since it will be processing a large number
of
blank rows.
Now, many people like to use the technique where you select a cell near the
bottom of the sheet, in a column that ALWAYS has a value, then use the
Ctrl-UpArrow technique to find the last cell in that colum that has a value.
Like:
Range("B64000").Select
Selection.End(xlUp).Select
I personally don't like this technique because it relies on "Selecting" the
sheet, and "selecting" cells on the sheet.
Any graphical/display interaction takes up a significant amount of CPU time.
(it's very inefficient)
Instead, I like to combine a couple of other techniques.
For instance:
using Ctrl-End will take you to the cell in the furthest row/column that has
data.
Recording a macro to do this results in:
ActiveCell.SpecialCells(xlLastCell).Select
Now, as I said, I don't like to "select" cells (unless I have to)
So, instead I use the .Row or .Column method to determine this last cell:
LastRow = ActiveCell.SpecialCells(xlLastCell).Row
LastCol = ActiveCell.SpecialCells(xlLastCell).Column
This still requires that a cell be selected (like: Range("A1").select)
But it doesn't "jump around" the sheet.
Personally, the one I like to use is:
If you have a column that ALWAYS has data...
For instance, Column B is a sequence number which is a REQUIRED field..
Then you can count the non-blank values in that column:
RowCnt = Application.worksheetfunction.counta(Range("B:B"))
In that case, the Last Row is the number of rows that have a value in column
"B".
-----------------
so, you've determined the total number of rows, and set up your loop
LastRow = Application.worksheetfunction.counta(Range("B:B"))
For RowNum = FirstRow to LastRow
...
Next RowNum
Next, for each of the rows being processed, you need to test the cell with your
criteria
and perform your action based on the cell value:
If (cells(RowNum,"X").value = 5) then
Else
End If
If you record a macro in which you change the range of cells from Y3 to AX3 to
"unlocked",
you'll find that is uses:
Range("Y3:AX3").Select
Range("AX3").Activate
Selection.Locked = False
This can be shortened.
You don't need the .activate step, and you don't need to actually "select" the
range of cells:
so it can be shortened to:
Range("Y3:AX3").Locked = False
Then you just have to change the row number (3) to your variable (RowNum) like:
Range("Y" & RowNum & ":AX" & RowNum).Locked = False
The same thing can be done with:
Range(Cells(RowNum, "Y"), Cells(RowNum, "AX")).Locked = False
If (Cells(RowNum, "X").Value = 5) Then
Range("Y" & RowNum & ":AX" & RowNum).Locked = False
Else
Range(Cells(RowNum, "Y"), Cells(RowNum, "AX")).Locked = True
End If
putting this all together, you end up with:
=================================================================
Option Explicit
Sub Toggle_Locks()
Dim RowNum, FirstRow, LastRow
FirstRow = 1
LastRow = Application.WorksheetFunction.CountA(Range("X:X"))
For RowNum = FirstRow To LastRow
If (Cells(RowNum, "X").Value = 5) Then
Range("Y" & RowNum & ":AX" & RowNum).Locked = False
Else
Range(Cells(RowNum, "Y"), Cells(RowNum, "AX")).Locked = True
End If
Next RowNum
End Sub
=================================================================
(I checked it... in Excel 2010, it processed 100,000 rows in about 15 seconds.)
Paul
-----------------------------------------
“Do all the good you can,
By all the means you can,
In all the ways you can,
In all the places you can,
At all the times you can,
To all the people you can,
As long as ever you can.” - John Wesley
-----------------------------------------
________________________________
From: Rajan_Verma <rajanverma1...@gmail.com>
To: excel-macros@googlegroups.com
Sent: Tue, June 26, 2012 11:26:13 AM
Subject: RE: $$Excel-Macros$$ For Each loop
No need to Loop
UsedRange.Replace “X”,””
Set rng=UsedRange.SpecialCells(xlcelltypeblanks)
Rng.value=”X”
Rng.entireColumn.Locked=True/False (whatever your want)
Regards
Rajan verma
+91 7838100659 [IM-Gtalk]
From:excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com] On
Behalf Of Richard
Sent: 26 June 2012 8:54
To: excel-macros@googlegroups.com
Subject: $$Excel-Macros$$ For Each loop
This one always confuses me, but it is usually simple, so I would appreciate
any
help.
I want to loop through all the rows with data in my worksheet and if the value
in a certain cell is equal to x then I want to unprotect selected columns in
that row, otherwise I want to reset the protection in those columns in that row.
Thank you in advance for any help
Rich
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