Protected Sub btnLogin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLogin.Click
        If (IsPostBack()) Then

            If txtUserName2.Text = "" Or txtPass3.Text = "" Then
                lblErr.Visible = True
                'Response.Redirect("default.aspx")
            End If


            Try
                objConnection = New OleDbConnection(connString)
                objConnection.Open()
               
                strSQL = "SELECT USER_NAME, PASSWD from UZER  WHERE USER_NAME = '" & txtUserName2.Text & "' AND PASSWD = '" & txtPass3.Text & "'"
                Response.Write(strSQL)

                
                objCommand = New OleDbCommand(strSQL, objConnection)
                objDataReader = objCommand.ExecuteReader(CommandBehavior.CloseConnection)
               
                objConnection.Close()
            Catch ex As Exception
                Response.Write("<br >")
                Response.Write(ex)
                Response.Write(strSQL)
            End Try

            If objDataReader("USER_NAME") = txtUserName2.Text And objDataReader("PASSWD") = txtPass3.Text Then
                Response.Cookies("userInfo")("UserName") = txtUserName2.Text

                Response.Redirect("Home.aspx")

            End If

        End If

    End Sub






End Class

<table style="width: 100%;" bgcolor="White">
        <tr>
            <td class="style2" colspan="2">
                <asp:Label ID="Label4" runat="server" Text="Login" Font-Size="Large"></asp:Label>
                 
                <asp:Label ID="lblErr" runat="server" Text="User Name And Password Must Be Entered" Font-Size="Smaller" ForeColor="Red"></asp:Label>
            </td>
        </tr>
        <tr>
            <td class="style4">
                <asp:Label ID="Label3" runat="server" Text="User Name"></asp:Label>
            </td>
            <td>
                <asp:TextBox ID="txtUserName2" runat="server" TabIndex="1"></asp:TextBox>
            </td>
        </tr>
        <tr>
            <td class="style4">
                <asp:Label ID="Label2" runat="server" Text="Password"></asp:Label>
            </td>
            <td>
                <asp:TextBox ID="txtPass3" runat="server" TabIndex="2"></asp:TextBox>
            </td>
        </tr>
        <tr>
            <td class="style4">
                 </td>
            <td>
                <asp:Button ID="btnLogin" runat="server" Text="Login" style="height: 26px" TabIndex="3" />
            </td>
        </tr>
    </table>