C# 如何从后面的代码添加样式？
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How to add style from code behind?
提问by Manish
I want to add a style A:Hoverto a HyperLink control from code behind.
我想A:Hover从后面的代码中向 HyperLink 控件添加样式。
I can do like this :
我可以这样做：
HyperLink hlRow = new HyperLink();
hlRow.Style.Add("color", "#000000");
hlRow.Style.Add("text-decoration", "none");
But how can I add styles for A:Hoverfor the hyperlink control?
Do I need to define a class and associate that class with this control, if yes how?
但是如何A:Hover为超链接控件添加样式？我是否需要定义一个类并将该类与此控件相关联，如果是，如何？
采纳答案by dxh
:hoveris a selector, and not a style. What you're doing in your example is adding inline styles to an element, and a selector equivalent for that obviously doesn't make much sense.
:hover是一个选择器，而不是一个样式。您在示例中所做的是向元素添加内联样式，而与此等效的选择器显然没有多大意义。
You can add a class to your link: hlRow.CssClass = 'abc';And define your class as such:
您可以在链接中添加一个类：hlRow.CssClass = 'abc';并定义您的类：
a.abc:hover {
...
}
回答by Mostafa Elmoghazi
You can use the CssClass property of the hyperlink:
您可以使用超链接的 CssClass 属性：
LiteralControl ltr = new LiteralControl();
ltr.Text = "<style type=\"text/css\" rel=\"stylesheet\">" +
@".d
{
background-color:Red;
}
.d:hover
{
background-color:Yellow;
}
</style>
";
this.Page.Header.Controls.Add(ltr);
this.HyperLink1.CssClass = "d";
回答by Mehdi Golchin
Try this:
尝试这个：
Html Markup
Html 标记
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="#">HyperLink</asp:HyperLink>
Code
代码
using System.Drawing;
using System.Web.UI;
using System.Web.UI.WebControls;
protected void Page_Load(object sender, EventArgs e)
{
Style style = new Style();
style.ForeColor = Color.Green;
this.Page.Header.StyleSheet.CreateStyleRule(style, this, "#" + HyperLink1.ClientID + ":hover");
}
回答by Noon Silk
You can't.
你不能。
So just don't apply styles directly like that, and apply a class "foo", and then define that in your CSS specification:
所以不要像那样直接应用样式，而是应用一个类“foo”，然后在你的 CSS 规范中定义它：
a.foo { color : orange; }
a.foo:hover { font-weight : bold; }
回答by bat
Also make sure the aspx page has AutoEventWireup="true"and not AutoEventWireup="false"
还要确保 aspx 页面有AutoEventWireup="true"和没有 AutoEventWireup="false"
回答by bydoga
Use
用
HyperLink hlRow = new HyperLink();
hlRow.Attributes.Add("Style", "color:#000000");
回答by denjerlog
If no file available for download, I needed to disable the asp:linkButton, change it to grey and eliminate the underline on the hover. This worked:
如果没有可供下载的文件，我需要禁用 asp:linkButton，将其更改为灰色并消除悬停时的下划线。这有效：
.disabled {
color: grey;
text-decoration: none !important;
}
LinkButton button = item.FindControl("lnkFileDownload") as LinkButton;
button.Enabled = false;
button.CssClass = "disabled";
回答by vivek verma
try this
尝试这个
lblMsg.Text = @"Your search result for <b style=""color:green;"">" + txtCode.Text.Trim() + "</b> ";
