Hi,
There are 2 forms of For...
For Each...Next and
For Each...Next Statement
Repeats a group of statements for each element in an array or collection.
Syntax
For Each element In group
[statements]
[Exit For]
[statements]
Next [element]
The For...Each...Next statement syntax has these parts:
Part Description
element Required. Variable used to iterate through the elements of the collection or array. For collections, element can only be a Variant variable, a generic object variable, or any specific object variable. For arrays, element can only be a Variant variable.
group Required. Name of an object collection or array (except an array of user-defined types).
statements Optional. One or more statements that are executed on each item in group.
Remarks
The For...Each block is entered if there is at least one element in group. Once the loop has been entered, all the statements in the loop are executed for the first element in group. If there are more elements in group, the statements in the loop continue to execute for each element. When there are no more elements in group, the loop is exited and execution continues with the statement following the Next statement.
Any number of Exit For statements may be placed anywhere in the loop as an alternative way to exit. Exit For is often used after evaluating some condition, for example If…Then, and transfers control to the statement immediately following Next.
You can nest For...Each...Next loops by placing one For...Each...Next loop within another. However, each loop element must be unique.
Note If you omit element in a Next statement, execution continues as if element is included. If a Next statement is encountered before its corresponding For statement, an error occurs.
You can't use the For...Each...Next statement with an array of user-defined types because a Variant can't contain a user-defined type.
For...Next
For...Next Statement
Repeats a group of statements a specified number of times.
Syntax
For counter = start To end [Step step]
[statements]
[Exit For]
[statements]
Next [counter]
The For…Next statement syntax has these parts:
Part Description
counter Required. Numeric variable used as a loop counter. The variable can't be a Boolean or an array element.
start Required. Initial value of counter.
end Required. Final value of counter.
step Optional. Amount counter is changed each time through the loop. If not specified, step defaults to one.
statements Optional. One or more statements between For and Next that are executed the specified number of times.
Remarks
The step argument can be either positive or negative. The value of the step argument determines loop processing as follows:
Value Loop executes if
Positive or 0 counter <= end
Negative counter >= end
After all statements in the loop have executed, step is added to counter. At this point, either the statements in the loop execute again (based on the same test that caused the loop to execute initially), or the loop is exited and execution continues with the statement following the Next statement.
Tip Changing the value of counter while inside a loop can make it more difficult to read and debug your code.
Any number of Exit For statements may be placed anywhere in the loop as an alternate way to exit. Exit For is often used after evaluating of some condition, for example If...Then, and transfers control to the statement immediately following Next.
You can nest For...Next loops by placing one For...Next loop within another. Give each loop a unique variable name as its counter. The following construction is correct:
For I = 1 To 10
For J = 1 To 10
For K = 1 To 10
...
Next K
Next J
Next I
Note If you omit counter in a Next statement, execution continues as if counter is included. If a Next statement is encountered before its corresponding For statement, an error occurs.
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