RequiredFieldvalidator

how to use required field validator for dropdownlist?.

my dropdown list having

-Day-

item1

item2

From stackoverflow

• Use InitialValue property as the default item that you don't want to be selected :

  <asp:DropDownList ID="ddlItems" runat="server">
      <asp:ListItem Text="-Day-" Value="-Day-"></asp:ListItem>
      <asp:ListItem Text="Item 1" Value="Item 1"></asp:ListItem>
      <asp:ListItem Text="Item 2" Value="Item 2"></asp:ListItem>
  </asp:DropDownList>
  
  <asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator1" 
      ErrorMessage="Validation Message !" ControlToValidate="ddlItems" 
      InitialValue="-Day-"></asp:RequiredFieldValidator>
  

  domus.vita : Cool, never knew about the InitialValue property. Thanks.

• You could use a CompareValidator like this:

  <asp:DropDownList ID="ddlItems" runat="server">
      <asp:ListItem Text="-Day-" Value="-1"></asp:ListItem>
      <asp:ListItem Text="Item 1" Value="Item 1"></asp:ListItem>
      <asp:ListItem Text="Item 2" Value="Item 2"></asp:ListItem>
  </asp:DropDownList>
  
  <asp:CompareValidator runat="server" ID="CompareFieldValidator1" 
      ErrorMessage="Validation Message !" ControlToValidate="ddlItems" 
      ValueToCompare="-1" Operator="NotEqual"></asp:CompareValidator>
  

  -Edoode