这是我的情景:
<!-- Normal Control -->
<div class="required">
<label for="address1">Address line 1</label>
<input type="text id="address1" name="address1" class="inputText" />
</div>
<!-- Same Control - but with a validation error -->
<div class="required error">
<p class="error">Address Line 1 Field is required</p>
<label for="address1">Address line 1</label>
<input type="text id="address1" name="address1" class="inputText" />
</div>
在“验证错误”html区域中,我可以使用以下代码显示消息:
<div class="required">
<asp:RequiredFieldValidator id="address1_validate" runat="server" ControlToValidate="address1" Text='<p class="error">Address Line 1 Field is required</p>' />
<label for="address1">Address (line 1)</label>
<asp:TextBox id="address1" CssClass="inputText" CausesValidation="true" runat="server"/>
</div>
我无法做的是将附加类添加到周围的div标签中。 我以为我可以这样做:
<div class="required <%= !address1_validate.isValid ? "error" : "" %>">
这几乎不起作用。
无论如何,我不想依赖JavaScript来设置这些值 - 它需要像“Web 1.0”一样工作。
有什么想法吗?
谢谢, 乔恩
-------我的解决方案------- 这是我背后的代码:
protected void Page_Load(object sender, EventArgs e)
{
if (this.IsPostBack)
{
address1_validate.Validate();
if (!address1_validate.IsValid)
{
address_panel.CssClass = "required error";
}
}
}
前端:
<asp:Panel runat="server" id="address_panel" CssClass="required">
<asp:RequiredFieldValidator id="address1_validate" runat="server" ControlToValidate="address1" Text='<p class="error">Address Field is required</p>' />
<label for="address1">Address (line 1)</label>
<asp:TextBox id="address1" CssClass="inputText" CausesValidation="true" EnableViewState="true" runat="server" />
</asp:Panel>
感谢您的帮助!
答案 0 :(得分:2)
你可以用ASP面板替换div,当然是runat = server。
<asp:Panel runat="server" ID="Panel1">
<label for="address1">Address line 1</label>
<input type="text id="address1" name="address1" class="inputText" />
</asp:Panel>
在代码隐藏中,您可以这样做 -
address1_validate.Validate();
...
...
if(address1_validate.IsValid)
Panel1.CssClass = "required";
else
Panel1.CssClass = "required error";
答案 1 :(得分:1)
可以只在其上放置一个ID并运行runat =“server”并在后面的代码中更改它。
答案 2 :(得分:0)
首先,将runat = server和id添加到外部div。
从这里你有几个选择。您可以覆盖页面上的validate方法并更改该div上的类设置。
或者,您可以创建一个继承自requiredfieldvalidator的自定义验证程序。添加一个属性以保存div id,并在验证代码中根据需要注入您的类。
答案 3 :(得分:0)
我想加入这个,如果您为RequiredFieldValidator或CustomValidator挂钩OnPreRender并将类添加到要验证的元素/控件中,您可以这样做:
protected void uxValidator_PreRender(object sender, EventArgs e)
{
RequiredFieldValidator uxValidator = sender as RequiredFieldValidator;
bool isValid = true;
WebControl control = null;
if (uxValidator != null)
{
isValid = uxValidator.IsValid;
control = uxValidator.NamingContainer.FindControl(uxValidator.ControlToValidate) as WebControl;
}
else
{
CustomValidator uxCustomValidator = sender as CustomValidator;
if (uxCustomValidator != null)
{
isValid = uxCustomValidator.IsValid;
control = uxCustomValidator.NamingContainer.FindControl(uxCustomValidator.ControlToValidate) as WebControl;
}
}
if (control != null)
{
if (!isValid)
{
control.Attributes["class"] = "error";
}
else
{
if ((control as TextBox) != null && !string.IsNullOrEmpty((control as TextBox).Text))
{
control.Attributes["class"] = "";
}
}
}
}