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我有一个RequiredFieldValidator下拉列表。两者都在UpdatePanel中。当点击提交按钮时,它不会验证用户在下拉列表中的选择。请指导我错过了什么。RequiredFieldValidator下拉列表不工作提交按钮点击
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div id="divFilter">
<asp:UpdatePanel ID="uplMain" runat="server">
<ContentTemplate>
<asp:PlaceHolder ID="PlaceHolder1" runat="server">
<table>
<tr>
<td valign="top">
<table>
<tr>
<td>
<asp:CheckBox ID="chkBusiness" runat="server" Text="Business Division" CssClass="chkbox" />
</td>
<td>
<asp:DropDownList ID="ddlBusiness" runat="server" AppendDataBoundItems="true" AutoPostBack="true"
CausesValidation="True" OnSelectedIndexChanged="ddlBusiness_SelectedIndexChanged"
ValidationGroup="grpSubmit" Width="350px">
<asp:ListItem Selected="True" Value="-1">--- SELECT ---</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="rfvBusiness" runat="server" ControlToValidate="ddlBusiness"
ToolTip="Please select a Business." ErrorMessage="*" CssClass="required" Display="Dynamic"
ValidationGroup="grpSubmit" Enabled="false">
</asp:RequiredFieldValidator>
</td>
</tr>
</table>
</td>
</tr>
</table>
</asp:PlaceHolder>
<hr size="1" />
<div style="text-align: center">
<table style="width: 10%">
<tr>
<td>
<asp:Button ID="btnHome" runat="server" Text="Home" OnClick="btnHome_Click" CssClass="btn" />
</td>
<td>
<asp:Button ID="btnSubmitReport" runat="server" Text="Submit" OnClick="btnSubmitReport_Click"
ValidationGroup="grpSubmit" CssClass="btn" />
</td>
</tr>
</table>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
@Giligan - Setting Enabled =“true”不起作用 – SilverFish
实际上,尝试将RequiredFieldValidator中的** InitialValue **属性设置为“-1”。如果提交的值是“-1”,这是您的下拉列表的默认值,这将告诉验证器验证失败。 https://msdn.microsoft.com/en-us/library/5hbw267h(vs.80).aspx – Gilligan
@ Giligan-这工作表示感谢。但在实际应用中,有一些JavaScript代码可见/不可见的div,所以它不能按预期工作。我将用该代码创建一个新帖子 – SilverFish