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StuartMosqueraStuartMosquera
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add missing examples for EnumerateFiles
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‎snippets/csharp/System.IO/Directory/EnumerateFiles/program3.cs‎

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// <Snippet1>
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using System;
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using System.IO;
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using System.Linq;
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class Program
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{
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static void Main(string[] args)
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{
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try
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{
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// Set a variable to the My Documents path.
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string docPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
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// Set the options for the enumeration.
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var options = new EnumerationOptions()
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{
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IgnoreInaccessible = true,
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MatchCasing = MatchCasing.CaseInsensitive,
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MatchType = MatchType.Simple,
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RecurseSubdirectories = true
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};
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var files = from file in Directory.EnumerateFiles(docPath, "*.txt", options)
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from line in File.ReadLines(file)
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where line.Contains("Microsoft")
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select new
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{
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File = file,
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Line = line
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};
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foreach (var f in files)
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{
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Console.WriteLine($"{f.File}\t{f.Line}");
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}
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Console.WriteLine($"{files.Count()} files found.");
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}
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catch (PathTooLongException pathEx)
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{
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Console.WriteLine(pathEx.Message);
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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}
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}
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}
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// </Snippet1>

‎snippets/csharp/System.IO/Directory/Overview/class8.cs‎

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// <Snippet16>
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using System;
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using System.IO;
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namespace ConsoleApplication
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{
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class Program
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{
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static void Main(string[] args)
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{
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string sourceDirectory = @"C:\current";
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string archiveDirectory = @"C:\archive";
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var options = new EnumerationOptions()
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{
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MatchCasing = MatchCasing.CaseInsensitive,
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MatchType = MatchType.Simple,
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RecurseSubdirectories = true
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};
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try
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{
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var txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt", options);
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foreach (string currentFile in txtFiles)
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{
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string fileName = currentFile.Substring(sourceDirectory.Length + 1);
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Directory.Move(currentFile, Path.Combine(archiveDirectory, fileName));
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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}
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}
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}
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}
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// </Snippet16>

‎snippets/fsharp/System.IO/Directory/EnumerateFiles/fs.fsproj‎

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<Compile Include="program1.fs" />
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<Compile Include="program2.fs" />
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<Compile Include="program.fs" />
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<Compile Include="program3.fs" />
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</ItemGroup>
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</Project>
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</Project>

‎snippets/fsharp/System.IO/Directory/EnumerateFiles/program3.fs‎

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module program3
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// <Snippet1>
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open System
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open System.IO
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try
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// Set a variable to the My Documents path.
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let docPath =
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Environment.GetFolderPath Environment.SpecialFolder.MyDocuments
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// Set the options for the enumeration.
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let options = new EnumerationOptions(
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IgnoreInaccessible = true,
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MatchCasing = MatchCasing.CaseInsensitive,
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MatchType = MatchType.Simple,
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RecurseSubdirectories = true
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)
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let files =
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query {
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for file in Directory.EnumerateFiles(docPath, "*.txt", options) do
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for line in File.ReadLines file do
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where (line.Contains "Microsoft")
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select {| File = file; Line = line |}
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}
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for f in files do
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printfn $"{f.File}\t{f.Line}"
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printfn $"{Seq.length files} files found."
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with
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| :? PathTooLongException as pathEx -> printfn $"{pathEx.Message}"
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| ex -> printfn $"{ex.Message}"
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// </Snippet1>

‎snippets/fsharp/System.IO/Directory/Overview/class8.fs‎

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module class8
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// <Snippet16>
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open System.IO
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let sourceDirectory = @"C:\current"
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let archiveDirectory = @"C:\archive"
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let options = new EnumerationOptions(
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MatchCasing = MatchCasing.CaseInsensitive,
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MatchType = MatchType.Simple,
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RecurseSubdirectories = true
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)
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try
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let txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt", options)
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for currentFile in txtFiles do
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let fileName = currentFile.Substring(sourceDirectory.Length + 1)
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Directory.Move(currentFile, Path.Combine(archiveDirectory, fileName))
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with ex ->
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printfn $"{ex.Message}"
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// </Snippet16>

‎snippets/fsharp/System.IO/Directory/Overview/fs.fsproj‎

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<Compile Include="class4.fs" />
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<Compile Include="class5.fs" />
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<Compile Include="class1.fs" />
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<Compile Include="class8.fs" />
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</ItemGroup>
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</Project>
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</Project>

‎snippets/visualbasic/System.IO/Directory/EnumerateFiles/program2.vb‎

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' <Snippet1>
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Imports System.IO
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Imports System.Xml.Linq
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Module Module1
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Sub Main()
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Try
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' Set a variable to the My Documents Path.
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Dim docPath As String = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
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' Set the options for the enumeration.
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Dim options As New EnumerationOptions() With {
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.IgnoreInaccessible = True,
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.MatchCasing = MatchCasing.CaseInsensitive,
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.MatchType = MatchType.Simple,
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.RecurseSubdirectories = True
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}
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Dim files = From chkFile In Directory.EnumerateFiles(docPath, "*.txt", options)
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From line In File.ReadLines(chkFile)
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Where line.Contains("Microsoft")
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Select New With {
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.curFile = chkFile,
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.curLine = line
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}
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For Each f In files
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Console.WriteLine($"{f.curFile}\t{f.curLine}")
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Next
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Console.WriteLine($"{files.Count} files found.")
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Catch pathEx As PathTooLongException
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Console.WriteLine(pathEx.Message)
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Catch ex As Exception
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Console.WriteLine(ex.Message)
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End Try
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End Sub
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End Module
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' </Snippet1>

‎snippets/visualbasic/System.IO/Directory/Overview/class8.vb‎

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' <Snippet16>
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Imports System.IO
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Module Module1
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Sub Main()
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Dim sourceDirectory As String = "C:\current"
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Dim archiveDirectory As String = "C:\archive"
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Dim options As New EnumerationOptions() With {
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.MatchCasing = MatchCasing.CaseInsensitive,
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.MatchType = MatchType.Simple,
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.RecurseSubdirectories = True
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}
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Try
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Dim txtFiles = Directory.EnumerateFiles(sourceDirectory, "*.txt", options)
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For Each currentFile As String In txtFiles
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Dim fileName = currentFile.Substring(sourceDirectory.Length + 1)
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Directory.Move(currentFile, Path.Combine(archiveDirectory, fileName))
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Next
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Catch ex As Exception
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Console.WriteLine(ex.Message)
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End Try
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End Sub
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End Module
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' </Snippet16>

‎xml/System.IO/Directory.xml‎

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The returned collection is not cached. Each call to the <xref:System.Collections.Generic.IEnumerable%601.GetEnumerator%2A> on the collection starts a new enumeration.
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## Examples
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The following example shows how to retrieve all the text files in a directory and its subdirectories, and move them to a new directory. After the files are moved, they no longer exist in the original directories.
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:::code language="csharp" source="~/snippets/csharp/System.IO/Directory/Overview/class8.cs" id="Snippet16":::
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:::code language="fsharp" source="~/snippets/fsharp/System.IO/Directory/Overview/class8.fs" id="Snippet16":::
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:::code language="vb" source="~/snippets/visualbasic/System.IO/Directory/Overview/class8.vb" id="Snippet16":::
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The following example recursively enumerates all files with the `.txt` extension, ignoring inaccessible directories and files. It reads each line of the file and displays the line if it contains the string "Microsoft".
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:::code language="csharp" source="~/snippets/csharp/System.IO/Directory/EnumerateFiles/program3.cs" id="Snippet1":::
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:::code language="fsharp" source="~/snippets/fsharp/System.IO/Directory/EnumerateFiles/program3.fs" id="Snippet1":::
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:::code language="vb" source="~/snippets/visualbasic/System.IO/Directory/EnumerateFiles/program2.vb" id="Snippet1":::
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]]></format>
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</remarks>
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<exception cref="T:System.ArgumentException">.NET Framework and .NET Core versions older than 2.1: <paramref name="path" /> is a zero-length string, contains only white space, or contains invalid characters. You can query for invalid characters by using the <see cref="M:System.IO.Path.GetInvalidPathChars" /> method.

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