Loop through controls in Datarepeater

[Kavius]

I have a datarepeater that repeats a "question" control. I have to check a boolean property for every instance of a row in the recordset. I had read that you could use ActiveRow to set the current row, but when I do I get an error:

Variable required - cannot assign to this expression.

This is the function I have. All it is supposed to do is check to see if all the rows are valid.

private function IsValid() as boolean
  IsValid = true
  with Repeater
    for .ActiveRow = 1 to .VisibleRows
      if(.RepeatedControl.IsValid)then
        IsValid = false
        exit function
      end if
    next
  end with
end function

Any suggestions?

 

[mdktindia]

Actually, I do not know about what the function does, but in programming point of view, there is a problem with the loop itself

for .ActiveRow = 1 to .VisibleRows
if(.RepeatedControl.IsValid)then
IsValid = false
exit function
end if
next

.activerow is a property of REPEATER, it indicates the current active row, it can be set or it can return a value.

You can not use this property as an index applied in this for loop. You should modify it as follow:


private function IsValid() as boolean

Dim i as integer 'declare an index variable

IsValid = true
with Repeater
for i= 1 to .VisibleRows
.ActiveRow = i 'change the active row followed by i
if(.RepeatedControl.IsValid)then
IsValid = false
exit function
end if
next
end with
end function

hope it helps

Cheers

mdkt

 

[Kavius]

Thank-you. That was it. Why was that it?

Activerow is a property, that much I got. But why can't a property be used as the variable in a for loop...

Oh...because it is a property, and a property can contain code. I'm thinking C where it would evaluate the condition, not VB where it assigns directly to the variable. The loop would work as a 'while' but not a 'for'. Am I right?

If I'm right...Again, thank-you. You have straightened out a misconception I didn't know I had. If not, I still don't get it (could you explain more?) Where would one begin to study Myology?