c# - Obout ComboBox 不适用于RequiredFieldValidator

Question

Obout ComboBox 的使用如下：

<asp:RequiredFieldValidator ID="rfvEndTipoEndereco" runat="server" ControlToValidate="ddlTipoEndereco"
    ValidationGroup="vagIndCad" ErrorMessage="Informe o tipo de endereço" ToolTip="Campo obrigatório">*</asp:RequiredFieldValidator>
    <obout:ComboBox  ID="ddlTipoEndereco" runat="server"    EnableLoadOnDemand="True" 
        MenuWidth="150px" oninit="Init_ComboBox" Width="150px" ></obout:ComboBox>

But it is not working properly, is not validating when the selected value is "".

等于： https ://www.obout.com/interface/aspnet_integration_validators.aspx

Answer 1

我不确定这个 Obout 控件，但是当使用带有 DropDownLists 的验证器时，您应该将验证器上的 InitialValue 设置为您要检查的值。例如：

<asp:RequiredFieldValidator ID="rfvEndTipoEndereco" runat="server" 
ControlToValidate="ddlTipoEndereco"  
ValidationGroup="vagIndCad" 
ErrorMessage="Informe o tipo de endereço" ToolTip="Campo obrigatório"
InitialValue="Select an item">*</asp:RequiredFieldValidator>