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robbied81 0 Newbie Poster

Hi,

Can someone help me. I am creating a booking wizard for my test site. The wizard it insdide a loginview. I am using a textbox with a calendar extender to input a date. I only want users to be able to select a date from tomorrow - 30 days.

I have used the FindControl to access the rangevalidator and now continually get an error saying:

"object reference not set to an instance of an object"

Can someone look at my code to see where I am going wrong. I've only attached the code of the relevant wizard text. File attached.

Regards

Public Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Dim wz As New Wizard
        wz = CType(LoginView1.FindControl("Wizard1"), Wizard)

        Dim daterange As New RangeValidator
        daterange = CType(wz.FindControl("rv"), RangeValidator)

        daterange.Type = ValidationDataType.Date
        daterange.MinimumValue = System.DateTime.Now.AddDays(1).ToShortDateString()
        daterange.MaximumValue = System.DateTime.Now.AddDays(30).ToShortDateString()

End Sub



<asp:WizardStep ID="TimeDate" runat="server" title="Time and Date">
                        <br />
                        <span class="subheading">Appointment Time and Date</span><br />
                        <br />
                        <span class="smallblack">Please select 2 possible appointments in case we&nbsp; cannot guarantee your first 
                        preference.<br />
                        <br />
                        <br />Please note for on the day bookings, you will need to call us.
                        <br />
                        </span>
                        <table cellpadding="0" cellspacing="0" style="width: 400px">
                            <tr>
                                <td style="height: 25px" class="headingtext">Option 1</td>
                            </tr>
                            <tr>
                                <td style="height: 25px"></td>
                            </tr>
                            <tr>
                                <td class="smallblack">Date:&nbsp;
                                    <asp:TextBox ID="TextBox1" runat="server" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
                                    <cc1:CalendarExtender ID="TextBox1_CalendarExtender" runat="server" 
                                        Enabled="True" PopupButtonID="Image2" PopupPosition="Right" OnClientDateSelectionChanged="checkDate" 
                                        TargetControlID="TextBox1">
                                    </cc1:CalendarExtender>
&nbsp;
                                    <asp:Image ID="Image2" runat="server" ImageUrl="~/images/Calendar.gif" />
                                    <br />
                                    <asp:RangeValidator ID="rv" runat="server" ControlToValidate="TextBox1" Display="Dynamic" Type="Date" CssClass="validate" SetFocusOnError="True">You can only book from tomorrow to 30 days in advance</asp:RangeValidator>
                                    <br />
                                    Time:
                                    <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True">
                                        <asp:ListItem>09</asp:ListItem>
                                        <asp:ListItem>10</asp:ListItem>
                                        <asp:ListItem>11</asp:ListItem>
                                        <asp:ListItem>12</asp:ListItem>
                                        <asp:ListItem>13</asp:ListItem>
                                        <asp:ListItem>14</asp:ListItem>
                                        <asp:ListItem>15</asp:ListItem>
                                        <asp:ListItem>16</asp:ListItem>
                                        <asp:ListItem>17</asp:ListItem>
                                        <asp:ListItem>18</asp:ListItem>
                                        <asp:ListItem>19</asp:ListItem>
                                    </asp:DropDownList>
                                    &nbsp;&nbsp;
                                    <asp:DropDownList ID="DropDownList2" runat="server" AutoPostBack="True">
                                        <asp:ListItem>00</asp:ListItem>
                                        <asp:ListItem>15</asp:ListItem>
                                        <asp:ListItem>30</asp:ListItem>
                                        <asp:ListItem>45</asp:ListItem>
                                    </asp:DropDownList>
                                </td>
                            </tr>
                        </table><br /><br /><br />
                        <table cellpadding="0" cellspacing="0" style="width: 400px">
                            <tr>
                                <td style="height: 25px" class="headingtext">Option 2</td>
                            </tr>
                            <tr>
                                <td style="height: 25px"></td>
                            </tr>
                            <tr>
                                <td class="smallblack">Date:&nbsp;
                                    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
&nbsp;
                                    <asp:Image ID="Image1" runat="server" ImageUrl="~/images/Calendar.gif" />
                                    <br />
                                    <br />
                                    Time:&nbsp;
                                    <asp:DropDownList ID="DropDownList3" runat="server" AutoPostBack="True">
                                        <asp:ListItem>09</asp:ListItem>
                                        <asp:ListItem>10</asp:ListItem>
                                        <asp:ListItem>11</asp:ListItem>
                                        <asp:ListItem>12</asp:ListItem>
                                        <asp:ListItem>13</asp:ListItem>
                                        <asp:ListItem>14</asp:ListItem>
                                        <asp:ListItem>15</asp:ListItem>
                                        <asp:ListItem>16</asp:ListItem>
                                        <asp:ListItem>17</asp:ListItem>
                                        <asp:ListItem>18</asp:ListItem>
                                        <asp:ListItem>19</asp:ListItem>
                                    </asp:DropDownList>
                                    &nbsp;&nbsp;
                                    <asp:DropDownList ID="DropDownList4" runat="server" AutoPostBack="True">
                                        <asp:ListItem>00</asp:ListItem>
                                        <asp:ListItem>15</asp:ListItem>
                                        <asp:ListItem>30</asp:ListItem>
                                        <asp:ListItem>45</asp:ListItem>
                                    </asp:DropDownList>
                                </td>
                            </tr>
                        </table>
                        
                    </asp:WizardStep>
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