2. Reading in other files
• VB can read in more than just text files
• You can also read in CSV files
• Comma Separated Value files
• CSV is a way of storing data separated by
commas
3. A CSV file opened in Excel
The data one, two, three, four and five would be separated
by commas in a CSV file
4. Using VB to read in a CSV file
Dim fileReader As String
fileReader = My.Computer.FileSystem.ReadAllText(" Y:example.csv")
Console.WriteLine(fileReader)
Console.ReadLine() Notice the
extension CSV
5. MEANWHILE IN THE MASTER CHIEF’S KITCHEN . . . .
HOW AM I
GONNA SPILT UP
THAT CSV FILE!
6. Splitting up CSV’s by Comma
Ideally we want to spilt the CSV file up where the comma
exists
Splitting the file
every time a
comma is found
7. Splitting up CSV’s by Comma
We can use the split() function to split the CSV by commas
Split(aString, ",")
The name of the Where we want the
string variable we split to occur
want to split up
8. Splitting up CSV’s by Comma
We need something which is going to be able to hold these
separate values
9. Splitting up CSV’s by Comma
Dim s As String
Dim fileReader As String
fileReader = My.Computer.FileSystem.ReadAllText("example.csv")
s = fileReader
Dim fields As Array An Array will hold
the split up CSV
fields = Split(s, ",")
10. Splitting up CSV’s by Comma
Dim s As String
Dim fileReader As String
fileReader = My.Computer.FileSystem.ReadAllText(" Y:example.csv")
s = fileReader
Dim fields As Array
fields = Split(s, ",")
For i = 0 To UBound(fields)
Console.WriteLine("word " & i & " " & fields(i))
Console.WriteLine("*****************************************")
Next
Using a for loop to write
the contents of the array
