Parameters

sourceFileName

A string containing the name of the file to copy.

destFileName

A string containing the name of the destination file. Cannot specify the name of a directory.

overwrite

A bool value. Specify true if the destination file can be overwritten; otherwise false.

Permissions

Type	Reason
System.Security.Permissions.FileIOPermission	Requires permission to read the source file and write the destination file. See System.Security.Permissions.FileIOPermissionAccess.Read and System.Security.Permissions.FileIOPermissionAccess.Write.

Exceptions

Type	Reason
System.IO.IOException	destFileName is read-only (write-protected), or destFileName exists and overwrite is false . -or- An I/O error occurred.
ArgumentNullException	sourceFileName or destFileName is null.
ArgumentException	sourceFileName or destFileName is a zero-length string, contains only white space, or contains one or more invalid characters. -or- sourceFileName or destFileName specifies a directory.
System.Security.SecurityException	The caller does not have the required permission.
System.IO.DirectoryNotFoundException	Directory information in destFileName or sourceFileName was not found.
System.IO.FileNotFoundException	sourceFileName was not found.
System.IO.PathTooLongException	The length or the absolute path information for sourceFileName or destFileName exceeds the system-defined maximum length.
UnauthorizedAccessException	The caller does not have the required permission.

Remarks

The sourceFileName and destFileName arguments are permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory.

Note: To obtain the current working directory, see Directory.GetCurrentDirectory.

Requirements

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0