FileInfo..ctor(string fileName) throwing exception: bug in SL 4.0 or .NET 4.0?
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by Duncan Bayne
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Published on 2010-03-15T00:19:21Z
Indexed on
2010/03/15
0:29 UTC
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Hit count: 656
Filed under:
.net-4.0
|silverlight-4.0
The following test case passes in .NET 4.0:
var fiT = new FileInfo("myhappyfilename");
Assert.IsNotNull(fiT);
... but fails in Silverlight 4.0 with the following error:
System.ArgumentNullException: Value cannot be null.
Parameter name: format
at System.String.Format(IFormatProvider provider, String format, Object[] args)
at System.Environment.GetResourceString(String key, Object[] values)
at System.IO.FileSecurityState.EnsureState()
at System.IO.FileInfo.Init(String fileName, Boolean checkHost)
at System.IO.FileInfo..ctor(String fileName)
Either the failure is a bug in SL 4.0, or the non-failure is a bug in .NET 4.0. Anyone know which it is?
(For the record, I'm running SL 4.0 on VS 2010 RC, which may be contributing to the problem).
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