C# 无法在代码中获取 DropDownList 的文本 - 可以获取值但不能获取文本
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Cant get text of a DropDownList in code - can get value but not text
提问by Etienne
I am using ASP.NET 3.5
我正在使用 ASP.NET 3.5
I have a drop-down list called lstCountry with an item in it like this:
我有一个名为 lstCountry 的下拉列表，其中有一个项目，如下所示：
<asp:ListItem Value="United States">Canada</asp:ListItem>
This will display Canada but in code the value will be "United States". How can I retrieve the value "Canada" also in my code?
这将显示加拿大，但在代码中该值将是“美国”。我怎样才能在我的代码中检索值“加拿大”？
I have tried all of these and all of them return "United States"
我已经尝试了所有这些，所有这些都返回“美国”
lstCountry.Text
lstCountry.SelectedValue
lstCountry.SelectedItem.Text
My Drop Down list:
我的下拉列表：
<asp:DropDownList ID="lstCountry" runat="server" Width="200px">
<asp:ListItem>Please Select</asp:ListItem>
<asp:ListItem>United States</asp:ListItem>
<asp:ListItem Value="United States">Canada</asp:ListItem>
</asp:DropDownList>
How I read the value in code:
我如何读取代码中的值：
Dim country As String
country = lstCountry.SelectedItem.Text
采纳答案by Muhammad Akhtar
add list using
添加列表使用
<asp:ListItem Value="United States" Text="Canada"></asp:ListItem>
and then try
然后尝试
DropDownList1.SelectedItem.Text
I found your mistake.
我发现了你的错误。
<asp:ListItem>United States</asp:ListItem>
change this to
将此更改为
<asp:ListItem>United States1</asp:ListItem>
Then you will got the actual value.
然后你会得到实际值。
What was the issue is, there are two same values in your dropdown, when page postback, it take first value as selected and give the result accordingly. if you noticed when after postback United State Value is selected
问题是，下拉列表中有两个相同的值，当页面回发时，它会选择第一个值并相应地给出结果。如果您注意到选择回发后美国值的时间
回答by Arsen Mkrtchyan
try
尝试
lstCountry.SelectedItem.Text
回答by Himadri
You can try
你可以试试
lstCountry.SelectedItem.Text
回答by rahul
What about
关于什么
lstCountry.Items[lstCountry.SelectedIndex].Text;
回答by Tom
Have a look here, this has a proof-of-concept page and demo you can use to get anything from the drop-down: asp:DropDownList Control Tutorial Page
看看这里，它有一个概念验证页面和演示，您可以使用它从下拉列表中获取任何内容： asp:DropDownList Control Tutorial Page
回答by john
AppendDataBoundItems="true"needs to be set.
AppendDataBoundItems="true"需要设置。
回答by Dameon
had the same problem and just solved it, i used string [variable_Name] =dropdownlist1.SelectedItem.Text;
遇到了同样的问题并刚刚解决了它，我使用了字符串 [variable_Name] =dropdownlist1.SelectedItem.Text;
