search files in directory C#

Question

3.33/5 (3 votes)

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I need to find a file within a directory which has lot many folder within it.

I have written a code which does it, since the directory has more than 1000 folders in it, it takes more time to fetch the result.

My code :

C#

protected void Button1_Click(object sender, System.EventArgs e)
   {
       string search = TextBox1.Text;
       string[] files = Directory.GetFiles(@"\\directory1\storage\folder1\", "*.*", SearchOption.AllDirectories);
       int Flag = 0;
       string dir = @"\\directory1\storage\folder1\";
       string[] files1;
       int numFiles;
       files1 = Directory.GetFiles(dir);
       numFiles = files.Length;
       Response.Write("Files searched : " + numFiles + "<br>");
       for (int i = 0; i < numFiles; i++)
       {


           string file = files[i].ToString();

           int file1 = file.IndexOf(search,StringComparison.CurrentCultureIgnoreCase);
           if (file1 != -1)
           {
               Response.Write("<br>" + file);
               //Response.Write("<div style='position:absolute;top:" + file + "px;left:" +  "px'>"+file! + "</div>");
               Flag = 1;

           }




       }
       if (Flag == 0)
       {
           Response.Write("No Matches Found");
       }
   }

Kindly suggest me, possibly post the code.

Posted 30-Jan-12 19:46pm

Member 8534726

Updated 1-Mar-16 5:48am

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Member 13847218 10-Jul-18 13:35pm

Response error
string search = TextBox1.Text; error

Member 13847218 12-Jul-18 0:39am

How To Search Values From files(my pc) And Set It Into TextBox In C# encode,decode pls help

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-01-30T20:02:00

Solution 4

The method Directory.GetFiles has one nasty caveat which is not very well know.

Please see this discussion (and my answer, too); you will find exact fixed solution: Directory.Get.Files search pattern problem[^].

—SA

Posted 30-Jan-12 20:02pm

Sergey Alexandrovich Kryukov

Comments

Lakamraju Raghuram 31-Jan-12 2:15am

I am unaware of this. Thanks
+5 or +++5 [ if I can (:- ]

Sergey Alexandrovich Kryukov 31-Jan-12 2:42am

You are welcome, and thank you. Interesting flaw in Win32 API, isn't it?
All credit goes to Nishant Sivakumar who explained this issue to me.
--SA

jk chan · Answer 2 · 2012-01-30T19:52:00

Solution 1

I think you can provide search string in Directory.GetFiles itself. like ( Myfile*.txt or MyFile.txt ). Don't know whether this will improve the speed. Just try .:)

jkchan
http://cgmath.blogspot.com

Posted 30-Jan-12 19:52pm

jk chan

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Member 8534726 31-Jan-12 1:54am

My search files are many... like .dll, .exe, .msi, .zip etc

Sergey Alexandrovich Kryukov 31-Jan-12 2:03am

Not exactly. There is one caveat and a fix you can find from my solution -- please see. I voted 4.
--SA

Rajesh Anuhya · Answer 3 · 2012-01-30T19:52:00

Solution 2

As per your requirement, i understood you want to search a specific file in the folder including sub folders.

you can you simple like this..

string[] files = Directory.GetFiles("c:\\", "*.exe", SearchOption.AllDirectories);

Hope this may helps you

--RA

Posted 30-Jan-12 19:52pm

Rajesh Anuhya

Updated 30-Jan-12 20:02pm

v2

Comments

Rajesh Anuhya 31-Jan-12 2:03am

Answer edited: to search multiple files.
--RA

Member 10193248 29-Aug-13 16:02pm

there is a issue about administrator permission when running the code. can u solve it? mail me on pinakichowdhurymca@gmail.com

Sergey Alexandrovich Kryukov 31-Jan-12 2:03am

Not exactly. There is one caveat and a fix you can find from my solution -- please see. I voted 4.
--SA

Member 8534726 31-Jan-12 2:04am

How do I pass the value of text box into this path ?

this search should depend on what user gives in the text box

Lakamraju Raghuram · Answer 4 · 2012-01-30T19:58:00

Solution 3

The discussion here is exactly what you want. Check it out
http://stackoverflow.com/questions/714101/quickest-way-in-c-sharp-to-find-a-file-in-a-directory-with-over-20-000-files[^]

Posted 30-Jan-12 19:58pm

Lakamraju Raghuram

Comments

Sergey Alexandrovich Kryukov 31-Jan-12 2:04am

This solution has one caveat and a fix you can find from my solution -- please see. I voted 4.
--SA

Kim Togo · Answer 5 · 2012-01-30T20:53:00

Check out Directory.EnumerateFiles Method (String, String, SearchOption)[^]

"The EnumerateFiles and GetFiles methods differ as follows: When you use EnumerateFiles, you can start enumerating the collection of names before the whole collection is returned; when you use GetFiles, you must wait for the whole array of names to be returned before you can access the array. Therefore, when you are working with many files and directories, EnumerateFiles can be more efficient."

search files in directory C#

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