Hello,

I've come across with a problem whilst following the 'Build your own ASP.NET 4 website' Book. In Chapter 9 I am following the code to create the Admin Tools and when I run the code and try to select an employee, nothing happens. On visual web developer it says that the next code that is suppose to run is:
Code:
comm.Parameters["@EmployeeID"].Value =
            employeesList.SelectedItem.Value;
This is the code for the select button:
aspx
PHP Code:
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
  <
h1>Admin Tools</h1>
  <
p>
    <
asp:Label ID="dbErrorLabel" ForeColor="Red" runat="server" />
    
Select an employee to update:<br />
    
<
asp:DropDownList ID="employeesList" runat="server" />
    
<
asp:Button ID="selectButton" Text="Select" runat="server"
        
onclick="selectButton_Click" />
  </
p
aspx.cs
PHP Code:
protected void selectButton_Click(object senderEventArgs e)
    {
        
// Declare objects
        
SqlConnection conn;
        
SqlCommand comm;
        
SqlDataReader reader;
        
// Read the connection string from Web.config
        
string connectionString =
            
ConfigurationManager.ConnectionStrings[
            
"HelpDesk"].ConnectionString;
        
// Initialize connection
        
conn = new SqlConnection(connectionString);
        
// Create command
        
comm = new SqlCommand(
            
"SELECT FirstName, LastName, Username, Address, City, County, Post Code, " +
            
"HomePhone, Extension, MobilePhone FROM Employees " +
            
"WHERE EmployeeID = @EmployeeID"conn);
        
// Add command parameters
        
comm.Parameters.Add("@EmployeeID"System.Data.SqlDbType.Int);
        
comm.Parameters["@EmployeeID"].Value =
            
employeesList.SelectedItem.Value;
        
// Enclose database code in Try-Catch-Finally
        
try
        {
            
// Open the connection
            
conn.Open();
            
// Execute the command
            
reader comm.ExecuteReader();
            
// Display the data on the form
            
if (reader.Read())
            {
                
firstnameTextBox.Text reader["FirstName"].ToString();
                
lastnameTextBox.Text reader["lastName"].ToString();
                
userNameTextBox.Text reader["Username"].ToString();
                
addressTextBox.Text reader["Address"].ToString();
                
cityTextBox.Text reader["City"].ToString();
                
countyTextBox.Text reader["county"].ToString();
                
postcodeTextBox.Text reader["Post Code"].ToString();
                
homePhoneTextBox.Text reader["HomePhone"].ToString();
                
extensionTextBox.Text reader["Extension"].ToString();
                
mobilePhoneTextBox.Text reader["MobilePhone"].ToString();
            }
            
// Close the reader 
            
reader.Close();
            
// Enable the Update button
            
updateButton.Enabled true;
        }
        catch
        {
            
// Display error message
            
dbErrorLabel.Text =
                
"Error loading the employee details!<br />";
        }
        
finally
        
{
            
// Close the connection
            
conn.Close();
        }
    } 
Thank You in advance!