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FileInfo.CopyTo Method (String)

When it is called by trusted applications, copies an existing file to a new file, disallowing the overwriting of an existing file.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public FileInfo CopyTo(
	string destFileName
)

Parameters

destFileName
Type: System.String
The name of the new file to copy to.

Return Value

Type: System.IO.FileInfo
A new file with a fully qualified path.

ExceptionCondition
ArgumentException

destFileName is empty, contains only white spaces, or contains invalid characters.

IOException

An error occurs, or the destination file already exists.

SecurityException

The caller does not have the required permission.

ArgumentNullException

destFileName is null.

UnauthorizedAccessException

A directory path is passed in, or the file is being moved to a different drive.

DirectoryNotFoundException

The directory specified in destFileName does not exist.

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.

NotSupportedException

destFileName contains a colon (:) in the middle of the string.

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

 This member has a SecurityCriticalAttribute attribute on Silverlight for Windows Phone, because the attribute was present in Silverlight 3. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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