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Using GetProfileString API in C#

jkavx
jkavx asked
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Last Modified: 2010-04-21
I'm migrating some VB code to C# and need an example of how to make the GetProfileString Api call in C#.
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Jaime OlivaresSoftware Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
try to declare the interop declaration:

[DllImport("KERNEL32.DLL", EntryPoint="GetPrivateProfileStringA",
CharSet=CharSet.Ansi)]
private static extern int GetPrivateProfileString (string lpApplicationName,
string lpKeyName, string lpDefault, StringBuilder lpReturnedString, int
nSize, string lpFileName);

you need to create a StringBuilder object before invoking it.
Jaime OlivaresSoftware Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:

Author

Commented:

The problem I'm having is that the StringBuilder only contains a portion of what should be returned; it's being truncated.  The return value of the call is 559, but the StringBuilder only has about 50 characters.

Software Architect
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Top Expert 2008
Commented:
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Author

Commented:
Passing string rather than StringBuilder the return value is 0, and the string is empty.

Author

Commented:
I found what I needed in one of the comments below the article.  You need to pass a char[] instead of a StringBuilder.

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