how to lock in between rows in excel vba - vba

Question

I want to lock the in between row's of excel sheet depending the value of the two column's ,
I have following code with me but it's makes entire sheet protected.
the code is :
there is another problem when the loop goes to else part it throws "unable to set Locked property of the range class" the code is :
Do While xlsht.Cells(i, 1) <> vbNullString
If (CStr(xlsht.Cells(i, 54).Value) <> "" And (CStr(Format(xlsht.Cells(i, 55).Value, "dd-MMM-yyyy")) = CStr(Format(Now, "dd-MMM-yyyy")))) Then
.Cells.Locked = False
.Range("A" & i & " : " & "BH" & i).Cells.Locked = True
.Range("A" & i & " : " & "BH" & i).Interior.Color = RGB(255, 255, 0)
.Protect Password:=admin
Else
.Cells.Locked = False
.Range("A" & i & " : " & "AC" & i).Cells.Locked = True
.Range("AE" & i & " : " & "AT" & i).Cells.Locked = True
.Range("BB" & i & " : " & "BH" & i).Cells.Locked = True
.Protect Password:=admin
End If
i = i + 1
Loop
End With

Answer 1

you may be after something like this:
Dim i As Long
i = 1
With Worksheets("mySheetName") '<--| change "mySheetName" to your actual sheet name
Do While .Cells(i, 1) <> ""
If (.Cells(i, 54).Value = "abc" And .Cells(i, 55).Value = "def") Then Intersect(.Range("A:BH"), .Rows(i)).Locked = True
i = i + 1
Loop
.Protect Password:="admin"
End With

Answer 2

By default, the entire sheet is Locked (property of a Range or Cell).
And you can only Protect an ENTIRE sheet.
So you'll have to unLock the rest of the sheet first!
i = 1
With xlsht
.Unprotect Password:=admin
.Cells.Locked = False
Do While xlsht(i, 1) <> vbNullString
If .Cells(i, 54).Values = "abc" And .Cells(i, 55).Values = "def" Then
'here is checking the column depends the row is get lock or not
.Range("A" & i & ":BH" & i).Cells.Locked = True
i = i + 1
End If
Loop
.Protect Password:=admin
End With 'xlsht
Second question
i = 1
With xlsht
.Unprotect Password:=admin
.Cells.Locked = False
Do While .Cells(i, 1).Value <> vbNullString
If CStr(.Cells(i, 54).Value) <> vbNullString And CDate(.Cells(i, 55).Value) = Date Then
With .Range("A" & i & ":BH" & i)
.Cells.Locked = True
.Interior.Color = RGB(255, 255, 0)
End With '.Range("A" & i & ":BH" & i)
Else
.Range("A" & i & ":AC" & i).Cells.Locked = True
.Range("AE" & i & ":AT" & i).Cells.Locked = True
.Range("BB" & i & ":BH" & i).Cells.Locked = True
End If
i = i + 1
Loop
.Protect Password:=admin
End With 'xlsht