mp3 files has to store dynamically created folder

this is my code:

//code (CS CODE)

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.IO;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;


public partial class _Default : System.Web.UI.Page 
{

    SqlConnection con = new SqlConnection("data source=.;database=chandu;integrated security=true");
    
    String fn;

    Int32 cnt;

    Int32 i;

    String pth;

    protected void Page_Load(object sender, EventArgs e)
    {


    }

    protected void btn_submit_Click(object sender, EventArgs e)

 {

     con.Open();    

// creating folder dynamically on server

if (Directory.Exists(Server.MapPath(("~/Profile") + "/" + txt_foldername.Text)))//I HAVE CREATED ONE FOLDER TO MY PROJECT "PROFILE" INTO THIS FOLDER ALL NEWLY INSERTED FOLDERS WILL BE STORES

return; // if allready exists then it will not create it

else 

// if not created then it will create it.

    Directory.CreateDirectory(Server.MapPath(("~/Profile") + "/" + txt_foldername.Text));//I HAVE CREATED ONE FOLDER TO MY PROJECT "PROFILE" INTO THIS FOLDER ALL NEWLY INSERTED FOLDERS WILL BE STORES

        SqlCommand  cmd = new SqlCommand(" insert into adio_1(eid) values(@txt_foldername)",con );
        //VALUES "+" (@ImgName,@ImgSize,@ImgPath)
        con.Close();

 }

protected void btn_fileupload_Click(object sender, EventArgs e)

 {

String save; // storing the path of the image filename

// if image file size is greater then below condition will execute it.



if (FileUpload1.PostedFile.ContentLength > 0)

 {

 fn = Path.GetFileName(FileUpload1.FileName); // here fn will store the image filename

 save = Server.MapPath(("~/Profile") + "/" + txt_foldername.Text) + "/" + fn; // making the path with created dynamically folder name

 FileUpload1.SaveAs(save); // will save the image inside the dynamically created folder name

 //Get Filename from fileupload control
 string filename = Path.GetFileName(FileUpload1.PostedFile.FileName);

 //Getting dbconnection from web.config connectionstring
 SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["dbconnection"].ToString());
 //Open the database connection
 con.Open();
 //Query to insert images path and name into database
 SqlCommand cmd = new SqlCommand("Insert into adio_1(eid,ImageName,ImagePath) values(@eid,@ImageName,@ImagePath)", con);
 //Passing parameters to query
 cmd.Parameters.AddWithValue("@eid", SqlDbType.VarChar).Value=txt_foldername.Text;
 cmd.Parameters.AddWithValue("@ImageName", filename);
 cmd.Parameters.AddWithValue("@ImagePath", Server.MapPath(("~/Profile") + "/" + txt_foldername.Text) + "/" + fn + filename);
 cmd.ExecuteNonQuery();
 //Close dbconnection
 con.Close();
  
Int32 cnt; 

Int32 i;
    
 cnt = ListBox1.Items.Count; // will count the total collections in listbox

 

if (cnt == 0) // if no item is added in the listbox then it will save it and exit (return) from the code.

 { ListBox1.Items.Add(fn); return; }

//if listbox item is not empty the following code will execute.

for (i = 0; i <= cnt - 1; i++)

 {

// check the filename if it is already exists in the listbox then it will not add it in.

if (ListBox1.Items[i].Text == fn)

 {

 Response.Write("file name already exists");

return;

 }

 }

// if not exists in the listbox then it will add it in listbox

 ListBox1.Items.Add(fn);

 }

 }

protected void Button1_Click(object sender, EventArgs e)

 {

 cnt = ListBox1.Items.Count; // count the items in listbox

for (i = 0; i <= cnt - 1; i++)

 {

if (ListBox1.Items[i].Selected==true)

 { //will delete the image from the dynamically created folder.

     pth = (Server.MapPath(("~/Profile") + "/" + txt_foldername.Text)) + "/" + ListBox1.Text;

File.Delete(pth); //deleting the file from server 

 ListBox1.Items.Remove(ListBox1.Text); //removing the selected item in listbox.

return;


 }

 }

 }

}

<%--designcode--%>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

<table id="Table1"  runat="server" class=”style1″>

<tr>

<td>

 Enter Folder name

</td>

<td>

<asp:TextBox ID="txt_foldername" runat="server"></asp:TextBox>

</td>

</tr>

<tr>

<td>

&nbsp;</td>

<td>

<asp:Button ID="btn_submit" runat="server" Text="Create Folder" 

OnClick="btn_submit_Click" />

</td>

</tr>

<tr>

<td>

 Select Image</td>

<td>

 

<asp:FileUpload ID="FileUpload1" runat="server" />

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" 

runat="server" 

ErrorMessage="Invalid File!(only  .gif, .jpg, .jpeg, .wav Files are supported)" 

ValidationExpression="^.+(.jpg|.JPG|.gif|.GIF|.jpeg|JPEG|.mp3)$" 

ControlToValidate="FileUpload1"></asp:RegularExpressionValidator>

</td> 

</tr>

<tr>

<td>

&nbsp;</td>

<td>

<asp:Button ID="btn_fileupload" runat="server" Text="Upload Image" 

onclick="btn_fileupload_Click" />

&nbsp;&nbsp;&nbsp;

</td>

</tr>

<tr>

<td>

&nbsp;</td>

<td>

<asp:ListBox ID="ListBox1" runat="server">

</asp:ListBox>

</td>

</tr>

<tr>

<td>

&nbsp;</td>

<td>

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" 

Text="Delete Selected Image" />

</td>

</tr>

</table>


    
        <br />
        <br />
        <br />
    
    </div>
    </form>
</body>
</html>