How To create Dynamic Directory in Asp.net and Display On Webpage ?

1.First you should use a folder from your application as parent folder of all your folders, lets suppose that this folder will be named Content.

2.Then if you want also to give the user possibilities to download/have access to this folder you should set up some access rights in your application web.config like in the next example:

<location path="Content">
    <system.web>
      <authorization>
        <allow users="*" />
      </authorization>
    </system.web>
  </location>

3.Finally you should use C# code to create the folder like in the next example:

string newPath = Server.MapPath(string.Format("~/Content/{0}", folderNameWithoutPath));
            DirectoryInfo directoryInfo= new DirectoryInfo(newPath);
            if (!directoryInfo.Exists)
            {
                directoryInfo.Create();
            }