Skip to main content

Get Files from Directory in C#

Here I am writing an example which shows how to get list of file names from a directory (including its subdirectories), and also demonstrate how one can filter the list by extension.
I have one directory(Folder) named as Sandeep under D drive(ref. fig.1), which have three files and one subdirectory Test Dir. 

Test Dir also contains one file(ref. fig.2)

To get file names from the specified directory, we need to use static method Directory.Get­Files

Get all files from directory

To get all files from directory, method Directory.GetFiles returns string array with files names (full paths).
String[] files = System.IO.Directory.GetFiles(@"c:\Sandeep\");
       // returned files:
       // "D:\Sandeep\abc.txt"
       // "D:\Sandeep\Test_123.xls"
       // "D:\Sandeep\Test_1222.doc"
Get files from directory (with specified extension)

You can specify search pattern, inside your directory. You can use wildcard specifiers in the search pattern, e.g. ‘*.txt’ to select files with the extension or ‘a*’ to select files beginning with letter ‘a’.
String[] files = System.IO.Directory.GetFiles(@"c:\Sandeep\", "*.txt");
       // returned files:
       // "D:\Sandeep\abc.txt"
Get files from directory (including its subdirectories)

If you want to get files of its subdirectories also then use parameter SearchOption.AllDirectories.
String[] files = System.IO.Directory.GetFiles(@"c:\Sandeep\", "*.doc", System.IO.SearchOption.AllDirectories);
       // returned files:
       // "D:\Sandeep\Test_1222.doc"
       // "D:\Sandeep\Test Dir\Test423.doc"


Popular posts from this blog

C#: Merging Excel cells with NPOI HSSFWorkbook

In this post we’ll see how to merge the two or more cell with each other while creating the excel sheet using NPOI.
Mentioned below is code to merge multiple cells, in this example we are merging first cell to fifth cell of first row (you can adjust row or cell range by passing particular parameters in CellRangeAddress).
//Created new Workbook var hwb = new NPOI.HSSF.UserModel.HSSFWorkbook(); //Create worksheet with name. var sheet = hwb.CreateSheet("new sheet"); //Create row and cell. var row = sheet.CreateRow(0); var cell = row.CreateCell(0); ; //Set text inside cell cell.SetCellValue("This is Merged cell"); cell.CellStyle.WrapText = true; //define cell range address // parameters: -> first row to last and first cell to last cell var cra = new NPOI.SS.Util.CellRangeAddress(0, 0, 0, 4); //Add merged region to sheet. sheet.AddMergedRegion(cra);
Hope this solution helps you J

Read and parse a CSV file into an array of rows and columns in C#

The following PopulateCsvIntoArraymethod used to read the CSV file into a two-dimensional array of strings.
I have included explanation of method lines, wherever needed. ///<summary> /// Populate the CSV file into an array, /// We assume that every line has the same number of fields and there may be blank lines. ///</summary> ///<returns></returns> privatestring[,] PopulateCsvIntoArray() { // Get path of CSV file. var path = Server.MapPath("~/Folder_Name/testfile.csv"); // Get the file's text using ReadAllText method. string fileData = System.IO.File.ReadAllText(path);
// Split CSV data into lines.     fileData = fileData.Replace('\n', '\r'); string[] lines = fileData.Split(newchar[] { '\r' }, StringSplitOptions.RemoveEmptyEntries);
// Get rows and columns counts. int totalRows = lines.Length;

Calculate Sum and average of two or more Textbox values using JQuery

We can calculate sum and average of values entered in textboxes with the help of small piece of jQuery code.
First of all let’s create a HTML form where we’ll ask user to enter marks in each subject, under body section add following HTML:
<tableclass="demo-table"> <trclass="label"> <tdcolspan="2">Please enter marks(0-99):</td> </tr> <tr> <td>English</td> <td> <inputtype="text"class="txtMarks"name="txtMarks"