Asp.net button not working
<p>When I click the button the information doesn't load into my table.</p>

<pre><code>&lt;%@ Page Language="C#" AutoEventWireup="true" CodeFile="frmManageUsers.aspx.cs" Inherits="frmManageUsers" %&gt;

&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
&lt;head id="Head1" runat="server"&gt;
    &lt;title&gt;Untitled Page&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;form id="form1" runat="server"&gt;
    &lt;div align="center"&gt;

        &lt;asp:ImageButton ID="ImageButton1" runat="server" 
            ImageUrl="~/images/CoolBiz_Productions_logo.JPG" PostBackUrl="~/frmMain.aspx" /&gt;

        &lt;br /&gt;
        &lt;asp:SqlDataSource ID="SqlDataSource1" runat="server" 
            ConnectionString="&lt;%$ ConnectionStrings:ConnectionString %&gt;" 
            ProviderName="&lt;%$ ConnectionStrings:ConnectionString.ProviderName %&gt;" 


            SelectCommand="SELECT [UserID], [UserName], [UserPassword], [SecurityLevel] FROM [tblUserLogin]"&gt;
        &lt;/asp:SqlDataSource&gt;

    &lt;/div&gt;
        &lt;div align="center"&gt;
        &lt;asp:Label ID="Label1" runat="server" Text="Manage Users"&gt;&lt;/asp:Label&gt;
    &lt;p&gt;
        &lt;asp:Label ID="Label2" runat="server" Text="User Name:"&gt;&lt;/asp:Label&gt;
        &lt;asp:TextBox ID="txtUserName" runat="server"&gt;&lt;/asp:TextBox&gt;
    &lt;/p&gt;
    &lt;p&gt;
        &lt;asp:Label ID="Label3" runat="server" Text="Password:"&gt;&lt;/asp:Label&gt;
        &lt;asp:TextBox ID="txtPassword" runat="server"&gt;&lt;/asp:TextBox&gt;
    &lt;/p&gt;
            &lt;p&gt;
                &lt;asp:Label ID="Label4" runat="server" Text="Security Level:"&gt;&lt;/asp:Label&gt;
                &lt;asp:DropDownList ID="drpdwnlstSecurityLevel" runat="server" 
                    onselectedindexchanged="drpdwnlstSecurityLevel_SelectedIndexChanged"&gt;
                    &lt;asp:ListItem&gt;A&lt;/asp:ListItem&gt;
                    &lt;asp:ListItem&gt;U&lt;/asp:ListItem&gt;
                &lt;/asp:DropDownList&gt;
    &lt;/p&gt;
            &lt;p&gt;
                &lt;asp:Button ID="btnAddUser" runat="server" Text="Add User" 
                    onclick="btnAddUser_Click1" /&gt;
    &lt;/p&gt;
            &lt;p&gt;
                &lt;asp:Label ID="lblError" runat="server"&gt;&lt;/asp:Label&gt;
    &lt;/p&gt;

        &lt;/div&gt;
    &lt;p&gt;
        &amp;nbsp;&lt;/p&gt;
                &lt;div align="center"&gt;
    &lt;asp:GridView ID="tblUserLogin" runat="server" AutoGenerateColumns="False" 
        DataSourceID="SqlDataSource1"&gt;
        &lt;Columns&gt;
            &lt;asp:BoundField DataField="UserID" HeaderText="UserID" InsertVisible="False" 
                SortExpression="UserID"&gt;&lt;/asp:BoundField&gt;
            &lt;asp:BoundField DataField="UserName" HeaderText="UserName" 
                SortExpression="UserName"&gt;&lt;/asp:BoundField&gt;
            &lt;asp:BoundField DataField="UserPassword" HeaderText="UserPassword" 
                SortExpression="UserPassword"&gt;&lt;/asp:BoundField&gt;
            &lt;asp:BoundField DataField="SecurityLevel" HeaderText="SecurityLevel" 
                SortExpression="SecurityLevel"&gt;&lt;/asp:BoundField&gt;
            &lt;asp:CommandField ShowEditButton="True" /&gt;
            &lt;asp:CommandField ShowDeleteButton="True" /&gt;
        &lt;/Columns&gt;
    &lt;/asp:GridView&gt;
    &lt;/form&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>Here is my code for frmManageUsers</p>

<pre><code>    public partial class frmManageUsers : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    protected void btnAddUser_Click1(object sender, EventArgs e)
    {
                //string userName, userPassword;



        if (txtUserName.Text == "" || txtUserName.Text == null)
        {
            lblError.Text = ("User Name may not be empty");
            lblError.ForeColor = System.Drawing.Color.Red;
            return;
        }
       // else

           // userName = (txtUserName.Text);


        if (txtPassword.Text == "" || txtPassword.Text == null)
        {
            lblError.Text = ("Password may not be empty");
            lblError.ForeColor = System.Drawing.Color.Red;
            return;
        }
        //else
           // userPassword = (txtPassword.Text);




        Session["UserName"] = txtUserName.Text;
        Session["Password"] = txtPassword.Text;
        Session["SecurityLevel"] = drpdwnlstSecurityLevel.SelectedValue;
        Server.Transfer("frmManageUsers.aspx");



        //Server.Transfer("grdUserLogin"); 

    }
    protected void drpdwnlstSecurityLevel_SelectedIndexChanged(object sender, EventArgs e)
    {

    }
}
</code></pre>
