error while i am writing the code to file upload

[chirutha12345]

hai friends,
i am writing the code for file upload .the document file is stored on the sqlserver databse.
i taken the one file upload control and button.
in the sqlserver i create a table and a procedure and witten the code.
but it gives error at show files method
please tellme the solution for that..
the code is as follows:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnUpload_Click(object sender, EventArgs e)
    {
        tdUploadStatus.InnerText = ShowFiles(1);
    }



    private string ShowFiles(int WeekID)
{
         SqlParameter param = null;
         SqlConnection conn = new SqlConnection();
         conn.ConnectionString = "Data Source=.\\SQLEXPRESS;Initial Catalog=CSMS;Integrated Security=true";
  
         SqlCommand cmd = new SqlCommand("showUploadedFiles", conn);
         cmd.CommandType = CommandType.StoredProcedure;
         param = new SqlParameter("@WeekID", SqlDbType.Int, 4);
         param.Value = WeekID;
         cmd.Parameters.Add(param);
     }

    }

please send me ASAp.because it is urgent for me;;
thanks & regards,

chiruthakumar

[4advanced]

What's the error it's givving you?
Did you try the stored procedure in your sqlserver?

regards

[chirutha12345]

it gives error like this:

Error 1 '_Default.ShowFiles(int)': not all code paths return a value c:\inetpub\wwwroot\WebSite11\Default.aspx.cs 25 20 http://localhost/WebSite11/

[4advanced]

Did you try your stored procedure? Does it return the correct values?

Also the parameter method is deprecated....you should use AddWithValue("yourParameterName", yourParameterValue)