Help: Building string value????

[serge calderara]

Dear all,

I need to determine the available disk space on a certain drive
for that I have used the following

mngObj = "win32_logicaldisk.deviceid=""E:"""
m_diskMngt = New ManagementObject(mngObj)

This works fine, but now my drive letter is a variable and I try to rebuild
that string as :
mngObj = "win32_logicaldisk.deviceid=" &"''" &myDrive &"''''"
Always get error of Invalid parameter,problem is the way to represent the
double quote for that function. IN my case I have use 2 time the ' characters
but seems to not work

Any help will be apprecaite
Regards
serge

[Mattias Sjögren]

>This works fine, but now my drive letter is a variable and I try to rebuild

that string as :
mngObj = "win32_logicaldisk.deviceid=" &"''" &myDrive &"''''"
Always get error of Invalid parameter,problem is the way to represent the
double quote for that function. IN my case I have use 2 time the ' characters
but seems to not work

Single quotes (') don't have to be escaped inside a string. So try

mngObj = "win32_logicaldisk.deviceid='" & myDrive & "'"

or

mngObj = "win32_logicaldisk.deviceid=""" & myDrive & """"

Mattias

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Mattias Sjögren [MVP] mattias @ mvps.org
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[Chad Z. Hower aka Kudzu]

=?Utf-8?B?c2VyZ2UgY2FsZGVyYXJh?=
<se************@discussions.microsoft.com> wrote in
news:55**********************************@microsof t.com:

mngObj = "win32_logicaldisk.deviceid=" &"''" &myDrive &"''''"
Always get error of Invalid parameter,problem is the way to represent
the double quote for that function. IN my case I have use 2 time the '
characters but seems to not work

How would you expect ' + ' to be interpreted as " ?

Try using a character value (34 IIRC) or """" (4 "). I dont remmeber if the latter works in VB.NET or not.
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[serge calderara]

Thnaks matias,

your first proposal works now..

"Mattias Sjögren" wrote:

This works fine, but now my drive letter is a variable and I try to rebuild
that string as :
mngObj = "win32_logicaldisk.deviceid=" &"''" &myDrive &"''''"
Always get error of Invalid parameter,problem is the way to represent the
double quote for that function. IN my case I have use 2 time the ' characters
but seems to not work

Single quotes (') don't have to be escaped inside a string. So try

mngObj = "win32_logicaldisk.deviceid='" & myDrive & "'"

or

mngObj = "win32_logicaldisk.deviceid=""" & myDrive & """"

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.