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Exercise: A long embedded code function to summarise films
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Create a report called Five Words to list out film names and their truncated synopses. To do this, create and use an embedded code function to return the first n words of each film's synopsis (where n can be any integer):
Here we're showing the first 5 words of each film's synopsis.
The expression for the second column's textbox above could be:
This expression finds the first 5 words of the given field.
This is anything but straightforward - if you want some help with the VB coding, turn the page!
Here's an example of a function which would do the trick (if you copy it into the Report Properties dialog box, you will, of course, lose all the formatting):
Function Prefix(What As String, PrefixCount As Integer) As String
'WHAT - the film synopsis or other string of text passed in
'PREFIXCOUNT - the number of words to return
'split the text passed into an array of single words
Dim Words() As String = What.Split(" ")
'create a variable to hold the final prefix
Dim StartString As String = ""
'loop over all of these words, adding each to the prefix ...
Dim i As Integer = 0
Dim Word As String
For Each Word In Words
'add 1 to the count of number of words
i += 1
'add this word onto list accumulating
StartString &= " " & Word
'if we've reached the maximum number of words requested, stop
If i >= PrefixCount Then
'add ellipsis (...) if not reached limit
If i < words.length="">Then StartString &= " ..."
'strip off leading space, and return
Ask your friendly tutor if this code doesn't make sense!