Dynamically create folder (directory) and save files using ASP.Net FileUpload in C# and VB.Net

Hi samsmuthu,

Please refer below sample.

HTML

<table>
<tr>
    <td>Name:</td>
    <td><asp:TextBox ID="txtName" runat="server"></asp:TextBox></td>
</tr>
<tr>
    <td>File:</td>
    <td><asp:FileUpload ID="fuFile" runat="server" /></td>
</tr>
<tr>
    <td></td>
    <td><asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="Upload" /></td>
</tr>
</table>

Namespaces

C#

using System.IO;

VB.Net

Imports System.IO

Code

C#

protected void Upload(object sender, EventArgs e)
{
    string fileName = Path.GetFileName(fuFile.PostedFile.FileName).Replace(" ", "-");
    string folderPath = txtName.Text.Replace(" ", "-");
    if (!Directory.Exists(Server.MapPath("~/" + folderPath)))
    {
        Directory.CreateDirectory(Server.MapPath("~/" + folderPath));
    }

    fuFile.SaveAs(Server.MapPath("~/" + Path.Combine(folderPath, fileName)));
}

VB.Net

Protected Sub Upload(ByVal sender As Object, ByVal e As EventArgs)
    Dim fileName As String = Path.GetFileName(fuFile.PostedFile.FileName).Replace(" ", "-")
    Dim folderPath As String = txtName.Text.Replace(" ", "-")
    If Not Directory.Exists(Server.MapPath("~/" & folderPath)) Then
        Directory.CreateDirectory(Server.MapPath("~/" & folderPath))
    End If
    fuFile.SaveAs(Server.MapPath("~/" & Path.Combine(folderPath, fileName)))
End Sub