6 replies to this topic

[Nissim]

Hi there Can someone please show me an example how to read a text file? Many thanks

[NeonMika / Markus VV.]

Hi there
Can someone please show me an example how to read a text file?

Many thanks

Dim stream as New FileStream("file.doc", FileMode.Create, FileAccess.Write)

Dim writer as new StreamWriter(stream)

writer.WriteLine("This is an example of using files")

writer.Flush()

writer.Close()

Explanation line for line:
1. Create a filestream. Streams are usally used to read and write data (e.g. NetworkStreams etc.)
2. On to of a stream, you need something to handle the data in the stream. For that you use an StreamWriter (Write) or an StreamReader (Read)
3. Use the StreamWrite to write a line
4. Flush() is used to ensure that the data is really written to file. WriteLine only says "Write to file when it fits you good" (very simplified sayed)... Flush says "Write NOW"
5. Close writer (as I know the stream gets closed automaticly if writer is closed) to free ressources

Hope i could help, I just use C#


EDIT: Oops, you wanted to read the file... Then use the following:

Dim stream as New FileStream("file.doc", FileMode.Open, FileAccess.Read)
Dim reader as new StreamReader(stream)
Dim readString as String
readString = fileReader.ReadLine() //returns the first line and sets the cursor to the next line

[Nissim]

Many thanks for your prompt reply Are you sure Stream is supported by Micro framework ? I cant get your example to work,, sorry

[Nissim]

can you kindly show me the using directive ?

[NeonMika / Markus VV.]

Normally, it is System.IO, I think it's the same on the MicroFramework... I already worked with it, so I'm sure it is supported. Use: using System.IO (I hope it is this syntax in VB, in C# it is ) PS: This is a very nice "Getting started" to work with streams. Nice explaination of what streams are and how to write/read to/from them MSDN: http://msdn.microsof...e/cc163710.aspx It's always good to have some background knowledge Greets, Markus

[Nevyn]

Normally, it is System.IO, I think it's the same on the MicroFramework...
I already worked with it, so I'm sure it is supported.

Use:
using System.IO

Have you checked to see if the System.IO dll is in the references for the project?

Regards,
Mark

[Nissim]

oh sorry, I forgot to add a reference to System I.O I thank you for your assistance