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My range validator is not working

I have a textbox control within a update panel that I need to validate. Why is the validation not working.
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
           <ContentTemplate>
               <asp:RangeValidator ID="RangeValidator3"
                ControlToValidate="LoadNumberListBox"
                Type="Integer"
                 MaximumValue="5000000"
                  MinimumValue="1"
               runat="server" ErrorMessage="Please enter your load number"
                   
                   style="top: 500px; left: 505px; position: absolute; height: 16px; width: 206px"></asp:RangeValidator>
            <asp:Label ID="loadLabel" runat="server"
            style="top: 521px; left: 473px; position: absolute; height: 16px; width: 103px"
            Text="<b>Load Number:</b>"></asp:Label>          
           
               <asp:ListBox ID="LoadNumberListBox"
               style="top: 520px; left: 576px; position: absolute; height: 30px; width: 128px"
               
                runat="server" DataSourceID="SqlDataSource10" DataTextField="OrderID"
                   DataValueField="OrderID" AppendDataBoundItems="True"></asp:ListBox>
           
               <cc1:ListSearchExtender ID="LoadNumberListBox_ListSearchExtender"
                   runat="server" Enabled="True" TargetControlID="LoadNumberListBox">
               </cc1:ListSearchExtender>
0
soccerman777
Asked:
soccerman777
  • 2
1 Solution
 
Bane83Commented:
RangeValidator only validates range and doesn't care if no item is selected.  You'll also need a RequiredFieldValidator, but in order to use this, you'll also need to add an extra item to the list such as "Select:" with a value which won't be in your range (-1 as an example) and the RequiredFieldValidator will need to have InitialValue="-1" (or whatever value you give to the new item.
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soccerman777Author Commented:
Sorry bane I should have put that in my first post. I am using  
LoadNumberListBox.Items.Insert(0, New ListItem("Choose...", ""))

I also have a required field validator however since you mentioned it I realized that it was not in the update panel so it was not working I put it into the update panel and they both work. I am sure you would have saw that if I had put all of the code in my question.

THANKS
0
 
soccerman777Author Commented:
Sorry bane I should have put that in my first post. I am using  
LoadNumberListBox.Items.Insert(0, New ListItem("Choose...", ""))

I also have a required field validator however since you mentioned it I realized that it was not in the update panel so it was not working I put it into the update panel and they both work. I am sure you would have saw that if I had put all of the code in my question.

THANKS
0

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