Beginning .Net : Get list of files from directory programmatically using .Net

Sometimes we want list of files and its details like file name , size , last access time etc... of a directory programmatically.
We can achieve this using DirectoryInfo and FileInfo Class. These classes are available in available in System.IO Namespace.
There is one method GetFiles() of DirectoryInfo class to get array of FileInfo class of particular directory.
This GetFiles() method accepts various parameters like , Search Pattern and Search Option.
Search Pattern means to get file list particular of give search pattern like you can pass "*.txt" it will get only ".txt" files.
Or like "System*" , it will get file name whose name start with System.

Here are sample example to list out all file and it's details of particular directory

 System.Text.StringBuilder objSB = new System.Text.StringBuilder();
        System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo("d:\\");
        objSB.Append("<table>");
        objSB.Append("<tr><td>FileName</td><td>Last Access</td><td>Last Write</td> <td>Attributes                  </td><td>Length(Byte)</td><td>Extension</td></tr>");
        foreach (System.IO.FileInfo objFile in directory.GetFiles("*.*"))
        {
            objSB.Append("<tr>");

            objSB.Append("<td>");
            objSB.Append(objFile.Name);
            objSB.Append("</td>");

            objSB.Append("<td>");
            objSB.Append(objFile.LastAccessTime);
            objSB.Append("</td>");

            objSB.Append("<td>");
            objSB.Append(objFile.LastWriteTime);
            objSB.Append("</td>");

            objSB.Append("<td>");
            objSB.Append(objFile.Attributes);
            objSB.Append("</td>");

            objSB.Append("<td>");
            objSB.Append(objFile.Length);
            objSB.Append("</td>");

            objSB.Append("<td>");
            objSB.Append(objFile.Extension);
            objSB.Append("</td>");
           
            objSB.Append("</tr>");
        }
        objSB.Append("</table>");

        Response.Write(objSB.ToString());

This example display list of file in html table structure.

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Beginning .Net : Get Directory Information programmatically using .Net

Some time you want to get directory information like sub directories  , last access time , last write time , Create new directory in to parent directory etc... programmatically using .Net.

You can get this information using "DirectoryInfo" class.
"DirectoryInfo" class available in System.IO Namespace.
There is one GetDirectories() method to get information about this.

Syntax :

System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(string strDirectoryPath);

Here strDirectoryPath is relative path of directory for which you want to get information

Here are one example which get all directories information of given directory path

       System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo("c:\\");
       //Here you can also specify path like "c:\\temp\\"   to get information of temp directory
        foreach (System.IO.DirectoryInfo objDirectory in directory.GetDirectories())
        {
            Response.Write("</br>Directory Name : " + objDirectory.Name);
            Response.Write("</br>Last Access Time : " + objDirectory.LastAccessTime);
            Response.Write("</br>Last Write Time : " + objDirectory.LastWriteTime);
                      
        }