CssStyleCollection.Clear 方法
定义
重要
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将所有样式项从 CssStyleCollection 对象中移除。
public:
void Clear();public void Clear ();member this.Clear : unit -> unitPublic Sub Clear ()示例
以下示例演示如何使用 Clear 方法以编程方式从控件 HtmlSelect 中删除所有 CSS 样式。
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void SubmitBtn_Click(object sender, EventArgs e)
{
FirstSelect.Style.Clear();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CssStyleCollection Clear Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
Click the submit button to clear the formatting.
<br />
<select id="FirstSelect"
style="font: 12pt Arial; background-color:Yellow; color:Blue;"
runat="server">
<option >option 1</option>
<option >option 2</option>
<option >option 3</option>
</select>
<input id="SubmitBtn"
value="Submit"
type="submit"
onserverclick="SubmitBtn_Click"
runat="server" /><br />
</div>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub SubmitBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
FirstSelect.Style.Clear()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CssStyleCollection Clear Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
Click the submit button to clear the formatting.
<br />
<select id="FirstSelect"
style="font: 12pt Arial; background-color:Yellow; color:Blue;"
runat="server">
<option >option 1</option>
<option >option 2</option>
<option >option 3</option>
</select>
<input id="SubmitBtn"
value="Submit"
type="submit"
onserverclick="SubmitBtn_Click"
runat="server" /><br />
</div>
</form>
</body>
</html>
