asp.net 如何獲取html控制元件select
只有設定了 runat="server" ，在後臺才可以訪問。
示例：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<select id="mySelect" runat="server">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<div id="myDiv" runat="server"></div>
</form>
</body>
</html>
程式碼：
foreach ( ListItem item in mySelect.Items )
{
myDiv.InnerHtml += string.Format( "Text = {0}, Value = {1}<br />", item.Text, item.Value );
}
或者：
for ( int i = 0; i < mySelect.Items.Count; i++ )
{
myDiv.InnerHtml += string.Format( "Text = {0}, Value = {1}<br />", mySelect.Items[ i ].Text, mySelect.Items[ i ].Value );
}