06-20-2011, 01:12 PM
Try 5: Reading Our Score DataPlease download the Try5.zip file by selecting the following link: Try5.zip.
Unzip the contents to the C:\Curl directory. This is the working directory for all the examples and exercises contained within this tutorial. Note: If C:\Curl has not already been created, you can create it now.
Basics: Reading Data from a File, Line by Line
Create the 'Try 5-1' ProjectClose the Try 4 project and then, from the IDE 'File' menu, select 'New Project'. In the 'New Project' dialog box, select “Applet Project” (1), input “Try5-1” (2), specify c:\Curl\lesson\Try5\01_read_file in the “Directory” field (3), set the API Version to 6.0 (4), and then click OK (5).
Inputting the ProgramCopy the c:\Curl\Try5\01_read_file\data.txt file to c:\Curl\lesson\Try5\01_read_file. Next, we’ll input the program. You can copy the program code below or use c:\Curl\Try5\01_read_file\start.curl and then paste it into the editor in the IDE.
Code:
{value
let loc:Url = {url data.txt}
let input:#TextInputStream
let data-array:StringArray = {StringArray}
let list:DropdownList = {DropdownList width = 5cm}
{try
set input = {read-open loc}
{until input.end-of-stream? do
{if-non-null line = {input.read-line} then
{data-array.append {line.to-String}}
}
}
catch e:IOException do
{popup-message An error reading the file has occurred.}
{output e.message}
finally
{if-non-null input then
{input.close}
}
}
{for s:String in data-array do
{list.append s}
}
{list.add-event-handler
{on ValueChanged at lb:DropdownList do
{popup-message lb.value & was selected}
}
}
{VBox
Please select a state,
list
}
}
Save the File, and then Execute the ProgramAfter inputting the code, save the file, and then execute the program. The following result will appear in your browser.
