在非母版页上验证ComboBox [英] Validation of ComboBox on non-Master page

问题描述

在主页面上有2个文本框和一个提交"按钮，在内容页面上有1个组合框.

每当我单击提交"时，都会显示有关文本框的任何验证错误，但我无法显示ComboBox的验证.我想表明如果ComboBox无效，则不应提交Button，它应该为此显示一条消息.

我还尝试过在ComboBox的内容页面上进行验证控制，但没有成功.

[edit]主题:请带我离开这里"对您没有帮助:请尝试更具描述性.
转换为英文. -OriginalGriff [/edit]

I have 2 TextBoxes and a "Submit" Button on the Master page & one ComboBox on my content page.

Whenever i click on "Submit" any validation errors regarding textboxes are displayed but I can''t show validation for the ComboBox. I want to show that the Button should not submitted if the ComboBox is not valid, it should show a message for that.

I have also tried validation control on content page for ComboBox but it didn''t work.

[edit]Subject: "Plz bring me out from here" does not help: try to be more descriptive.
Converted to English. - OriginalGriff[/edit]

推荐答案

尝试此
InterviewCategory.items.insert(0，"select");

try this
InterviewCategory.items.insert(0,"select");

<asp:DropDownList ID="ddl_InterviewCategory" runat="server" AutoPostBack="True"

                            onselectedindexchanged="ddl_InterviewCategory_SelectedIndexChanged">
                        </asp:DropDownList><asp:RequiredFieldValidator ID="rfv_Category" ControlToValidate="ddl_InterviewCategory" runat="server" ErrorMessage="Category"

                                    SetFocusOnError="true" InitialValue="Select" Display="dynamic">*</asp:RequiredFieldValidator>

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