Required Field Validator Is Not Working For Bounded Dropdownlist

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ASP.NET

how to apply validation on dropdown list which is bounded with database

Posted 7-Jun-11 21:19pm

mohit.a44

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JustWorking · Answer 1 · 2011-06-07T21:31:00

XML

<asp:DropDownList ID="ddlSuggArea" runat="server" DataSourceID="sdsSuggArea" DataTextField="Area_Desc"

DataValueField="Area_Id" AppendDataBoundItems="True" CausesValidation="True">

<asp:ListItem Selected="True" Value="0">Choose Area...</asp:ListItem>

</asp:DropDownList>

<asp:RequiredFieldValidator ID="rfvSuggArea" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="ddlSuggArea" SetFocusOnError="True" InitialValue="0">Please choose a topic area</asp:RequiredFieldValidator>

Om Prakash Pant · Answer 2 · 2011-06-07T21:30:00

add required field validator as:

XML

<asp:RequiredFieldValidator
    ID="your_id"
    runat="server"
    ErrorMessage="Please Select Value"
    ControlToValidate="your_dropdownlist"
    InitialValue="-Select-"
    Display="dynamic"
    Enabled="false">
</asp:RequiredFieldValidator>

Once you bind the datasource to the Dropdownlist, insert first option as "Please Select".
Set the Intial value in Required field validator.

New value can be added in dropdown as follows:

your_dropdownlist.Items.Insert(0, new ListItem("-Select-","-Select-");

Required Field Validator Is Not Working For Bounded Dropdownlist

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