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Creating a file and writing to it

Posted on 2006-10-19
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Last Modified: 2010-04-23
Whats the best way to create a file named "stuff.xml" then write these 2 lines:
<?xml version=""1.0""?>
<v></v>

then append these lines
<x></x>
<y></>

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Question by:npl77
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7 Comments
 
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Expert Comment

by:Mike Tomlinson
ID: 17767278
"best way" is subjective...

What version VB?
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Expert Comment

by:Mike Tomlinson
ID: 17767311
VB.Net 2005:

        My.Computer.FileSystem.WriteAllText("c:\stuff.xml", "<?xml version=" & Chr(34) & Chr(34) & "1.0" & Chr(34) & Chr(34) & "?>" & vbCrLf & "<v></v>", False)
        My.Computer.FileSystem.WriteAllText("c:\stuff.xml", "<x></x>" & vbCrLf & "<y></>", True)
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 17767355
That probably should be:

        My.Computer.FileSystem.WriteAllText("c:\stuff.xml", "<?xml version=" & Chr(34) & "1.0" & Chr(34) & "?>" & vbCrLf & "<v></v>" & vbCrLf, False)
        My.Computer.FileSystem.WriteAllText("c:\stuff.xml", "<x></x>" & vbCrLf & "<y></y>" & vbCrLf, True)
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 17767381
For earlier .Net versions:

        Dim sw As New System.IO.StreamWriter("c:\stuff.xml", False)
        sw.Write("<?xml version=" & Chr(34) & "1.0" & Chr(34) & "?>" & vbCrLf & "<v></v>" & vbCrLf)
        sw.Close()

        Dim sw2 = New System.IO.StreamWriter("c:\stuff.xml", True)
        sw2.Write("<x></x>" & vbCrLf & "<y></y>" & vbCrLf)
        sw2.Close()
0
 

Author Comment

by:npl77
ID: 17767405
i must be able to append on a button click append the( <x>, <y<>). I was using a streamwriter but it doesnt work

 xmlWriter = New StreamWriter(xmlPath)
 xmlWriter.Write("<?xml version=""1.0""?>" & vbCrLf )

then on the button click:

xmlWriter.Write(xml)
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Author Comment

by:npl77
ID: 17767410
using vs2005
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Accepted Solution

by:
Mike Tomlinson earned 125 total points
ID: 17767450
From a couple comments ago:

    My.Computer.FileSystem.WriteAllText("c:\stuff.xml", "<x></x>" & vbCrLf & "<y></y>" & vbCrLf, True)

The last parameter specifices whether we should append or not.  False makes it overwrite the file.  True makes it append to the end of the file.
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