blocks|key|1564069|text|也许吧|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564070|File.Copy("c:\\myFolder\\myFile.txt",+"c:\\NewFolder\\myFile.txt");|code-block|syntax|javascript|1564071|1564072|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|K|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|L|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|M|8|@]|9|@]|A|$]]]|I|$]]

Maybe 

<pre><code>File.Copy("c:\\myFolder\\myFile.txt", "c:\\NewFolder\\myFile.txt");
</code></pre>

?

blocks|key|1893181|text|MSDN+File.Copy|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1893182|var+fileName+=+"sourceFile.txt";
var+source+=+Path.Combine(Environment.CurrentDirectory,+fileName);
var+destination+=+Path.Combine(destinationFolder,+fileName);

File.Copy(source,+destination);|code-block|syntax|javascript|1893183|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.io.file.copy(v=VS.100).aspx^0|0|E|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

<a href="http://msdn.microsoft.com/en-us/library/system.io.file.copy(v=VS.100).aspx" rel="noreferrer">MSDN File.Copy</a>

<pre><code>var fileName = "sourceFile.txt";
var source = Path.Combine(Environment.CurrentDirectory, fileName);
var destination = Path.Combine(destinationFolder, fileName);

File.Copy(source, destination);
</code></pre>

blocks|key|1893185|text|File.Copy(@"someDirectory\someFile.txt",+@"otherDirectory\someFile.txt");|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1893186|工作正常。|unstyled|1893187|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>File.Copy(@"someDirectory\someFile.txt", @"otherDirectory\someFile.txt");
</code></pre>

works fine.

blocks|key|4003460|text|string+fileToCopy+=+"c:\\myFolder\\myFile.txt";
string+destinationDirectory+=+"c:\\myDestinationFolder\\";

File.Copy(fileToCopy,+destinationDirectory+%2B+Path.GetFileName(fileToCopy));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4003461|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>string fileToCopy = "c:\\myFolder\\myFile.txt";
string destinationDirectory = "c:\\myDestinationFolder\\";

File.Copy(fileToCopy, destinationDirectory + Path.GetFileName(fileToCopy));
</code></pre>

blocks|key|5422189|text|这对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5422190|++++string+picturesFile+=+@"D:\pictures";
++++string+destFile+=+@"C:\Temp\tempFolder\";

++++string[]+files+=+Directory.GetFiles(picturesFile);
++++foreach+(var+item+in+files)
++++{
+++++++File.Copy(item,+destFile+%2B+Path.GetFileName(item));
++++}|code-block|syntax|javascript|5422191|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This worked for me:

<pre><code> string picturesFile = @"D:\pictures";
 string destFile = @"C:\Temp\tempFolder\";

 string[] files = Directory.GetFiles(picturesFile);
 foreach (var item in files)
 {
 File.Copy(item, destFile + Path.GetFileName(item));
 }
</code></pre>

blocks|key|4003466|text|我使用了这段代码，它对我来说很有效|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4003467|//I+declare+first+my+variables
string+sourcePath+=+@"Z:\SourceLocation";
string+targetPath+=+@"Z:\TargetLocation";

string+destFile+=+Path.Combine(targetPath,+fileName);
string+sourceFile+=+Path.Combine(sourcePath,+fileName);

//+To+copy+a+folder's+contents+to+a+new+location:
//+Create+a+new+target+folder,+if+necessary.
if+(!Directory.Exists(targetPath))
{
++++Directory.CreateDirectory(targetPath);
}

//+To+copy+a+file+to+another+location+and+
//+overwrite+the+destination+file+if+it+already+exists.
File.Copy(sourceFile,+destFile,+true);|code-block|syntax|javascript|4003468|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I used this code and it work for me

<pre><code>//I declare first my variables
string sourcePath = @"Z:\SourceLocation";
string targetPath = @"Z:\TargetLocation";

string destFile = Path.Combine(targetPath, fileName);
string sourceFile = Path.Combine(sourcePath, fileName);

// To copy a folder's contents to a new location:
// Create a new target folder, if necessary.
if (!Directory.Exists(targetPath))
{
 Directory.CreateDirectory(targetPath);
}

// To copy a file to another location and 
// overwrite the destination file if it already exists.
File.Copy(sourceFile, destFile, true);
</code></pre>

blocks|key|1893225|text|如果目标目录不存在，File.Copy将抛出。这个版本解决了这个问题|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1893226|public+void+Copy(
++++++++++++string+sourceFilePath,
++++++++++++string+destinationFilePath,
++++++++++++string+destinationFileName+=+null)
{
+++++++if+(string.IsNullOrWhiteSpace(sourceFilePath))
++++++++++++++++throw+new+ArgumentException("sourceFilePath+cannot+be+null+or+whitespace.",+nameof(sourceFilePath));
+++++++
+++++++if+(string.IsNullOrWhiteSpace(destinationFilePath))
++++++++++++++++throw+new+ArgumentException("destinationFilePath+cannot+be+null+or+whitespace.",+nameof(destinationFilePath));
+++++++
+++++++var+targetDirectoryInfo+=+new+DirectoryInfo(destinationFilePath);

+++++++//this+creates+all+the+sub+directories+too
+++++++if+(!targetDirectoryInfo.Exists)
+++++++++++targetDirectoryInfo.Create();

+++++++var+fileName+=+string.IsNullOrWhiteSpace(destinationFileName)
+++++++++++?+Path.GetFileName(sourceFilePath)
+++++++++++:+destinationFileName;

+++++++File.Copy(sourceFilePath,+Path.Combine(destinationFilePath,+fileName));
}|code-block|syntax|javascript|1893227|在.NET+Core2.1上测试|1893228|entityMap^0|A|9|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

If the destination directory doesn't exist, <code>File.Copy</code> will throw. This version solves that
<pre><code>public void Copy(
 string sourceFilePath,
 string destinationFilePath,
 string destinationFileName = null)
{
 if (string.IsNullOrWhiteSpace(sourceFilePath))
 throw new ArgumentException(&quot;sourceFilePath cannot be null or whitespace.&quot;, nameof(sourceFilePath));
 
 if (string.IsNullOrWhiteSpace(destinationFilePath))
 throw new ArgumentException(&quot;destinationFilePath cannot be null or whitespace.&quot;, nameof(destinationFilePath));
 
 var targetDirectoryInfo = new DirectoryInfo(destinationFilePath);

 //this creates all the sub directories too
 if (!targetDirectoryInfo.Exists)
 targetDirectoryInfo.Create();

 var fileName = string.IsNullOrWhiteSpace(destinationFileName)
 ? Path.GetFileName(sourceFilePath)
 : destinationFileName;

 File.Copy(sourceFilePath, Path.Combine(destinationFilePath, fileName));
}
</code></pre>
Tested on .NET Core 2.1

blocks|key|4003501|text|NET6+-可拓法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4003502|[DebuggerStepThrough]
public+static+FileInfo+CopyToDir(this+FileInfo+srcFile,+string+destDir)+=>
++++(srcFile+==+null+%7C%7C+!srcFile.Exists)+?+throw+new+ArgumentException($"The+specified+source+file+[{srcFile.FullName}]+does+not+exist",+nameof(srcFile))+:
++++(destDir+==+null+%7C%7C+!Directory.Exists(destDir))+?+throw+new+ArgumentException($"The+specified+destination+directory+[{destDir}]+does+not+exist",+nameof(destDir))+:
++++srcFile.CopyTo(Path.Combine(destDir,+srcFile.Name),+true);|code-block|syntax|javascript|4003503|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

NET6 - Extension method
<pre><code>[DebuggerStepThrough]
public static FileInfo CopyToDir(this FileInfo srcFile, string destDir) =&gt;
 (srcFile == null || !srcFile.Exists) ? throw new ArgumentException($&quot;The specified source file [{srcFile.FullName}] does not exist&quot;, nameof(srcFile)) :
 (destDir == null || !Directory.Exists(destDir)) ? throw new ArgumentException($&quot;The specified destination directory [{destDir}] does not exist&quot;, nameof(destDir)) :
 srcFile.CopyTo(Path.Combine(destDir, srcFile.Name), true);
</code></pre>

I am working on a project where I want to copy some files in one directory to a second already existing directory.

I can't find a way to simply copy from one folder to another. I can find copy file to a new file, or directory to a new directory.

The way I have my program set up right now is I copy the file and leave it in same directory, then move that copy to the directory that I want.

Edit:

Thanks everyone. All of your answers worked. I realized what I did wrong, when i set the destination path I didn't add a filename. Everything works now, Thanks for the super speedy responses.

Copy file to a different directory

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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