替换下拉菜单中的字符串
本文关键字:字符串 下拉菜单 替换 | 更新日期: 2023-09-27 18:17:56
所以当用户选择了不同的项目时,我试图加载一个不同的字符串,我的代码:
void ModeSelectorSelectionChanged(object sender, SelectionChangedEventArgs e)
{
var data1 = new string[]
{
"January 2012",
"February 2012",
"March 2012",
"April 2012",
};
var data2 = new string[]
{
"Married",
"Divorced",
"Buy new house",
"Get promotion",
};
if (_Menu2.SelectedIndex == 2)
{
_Menu3.ItemsSource = data1;
}
else
if (_Menu2.SelectedIndex == 3)
{
_Menu3.ItemsSource = data2;
}
}
当我只使用一个字符串它工作得很好,但一旦我尝试加载2个不同的字符串在同一个下拉菜单它关闭,这意味着它不显示任何字符串数据。我做错了什么?
. NET WebForms下拉列表遵循以下代码片段:
_Menu3.DataSource = someData;
_Menu3.DataBind();
也许将此逻辑移动到客户端并使用javascript会更好。
试试下面的代码。这是我的工作,AutoPostBack将为_menu的true。
protected void ModeSelectorSelectionChanged(object sender, EventArgs e)
{
var data1 = new string[]
{
"January 2012",
"February 2012",
"March 2012",
"April 2012",
};
var data2 = new string[]
{
"Married",
"Divorced",
"Buy new house",
"Get promotion",
};
if (_Menu2.SelectedIndex == 2)
{
_Menu3.DataSource = data1;
_Menu3.DataBind();
}
else if (_Menu2.SelectedIndex == 3)
{
_Menu3.DataSource = data2;
_Menu3.DataBind();
}
}