Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

DirectoryInfo::Exists Property

 

Gets a value indicating whether the directory exists.

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

public:
property bool Exists {
	virtual bool get() override;
}

Property Value

Type: System::Boolean

true if the directory exists; otherwise, false.

The Exists property returns false if any error occurs while trying to determine if the specified file exists. This can occur in situations that raise exceptions such as passing a file name with invalid characters or too many characters, a failing or missing disk, or if the caller does not have permission to read the file.

The following example demonstrates a use of the Exists property in the context of copying a source directory to a target directory.

using namespace System;
using namespace System::IO;

// Copy a source directory to a target directory.
void CopyDirectory( String^ SourceDirectory, String^ TargetDirectory )
{
   DirectoryInfo^ source = gcnew DirectoryInfo( SourceDirectory );
   DirectoryInfo^ target = gcnew DirectoryInfo( TargetDirectory );

   //Determine whether the source directory exists.
   if (  !source->Exists )
      return;

   if (  !target->Exists )
      target->Create();


   //Copy files.
   array<FileInfo^>^sourceFiles = source->GetFiles();
   for ( int i = 0; i < sourceFiles->Length; ++i )
      File::Copy( sourceFiles[ i ]->FullName, String::Concat( target->FullName, "\\", sourceFiles[ i ]->Name ), true );

   //Copy directories.
   array<DirectoryInfo^>^sourceDirectories = source->GetDirectories();
   for ( int j = 0; j < sourceDirectories->Length; ++j )
      CopyDirectory( sourceDirectories[ j ]->FullName, String::Concat( target->FullName, "\\", sourceDirectories[ j ]->Name ) );
}

int main()
{
   CopyDirectory( "D:\\Tools", "D:\\NewTools" );
}

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Return to top
Show:
© 2017 Microsoft