[英]ASP.Net - Issues with Repeater / DataBinding
我正在尝试将我的labelIDs
绑定到我的应用程序中。 我无法正常工作。 我确定名称是否需要与.cs文件中的名称匹配?
我在.aspx文件中的代码:
<asp:Repeater ID="Repeater_weatherReports" runat="server" onitemcommand="reptrData_ItemCommand">
<ItemTemplate>
<table id="tblWeather" border="0" visible="true">
<tr>
<th>
Weather Info
</th>
</tr>
<tr>
<td>
<asp:Label runat="server" ID="lblCity_Country" Text='<%# Eval("city") %>' />
humidity:<asp:Label runat="server" ID="Label_humidity" Text='<%# Eval("main.humidity") %>' />
</td>
</tr>
<tr>
<td>
min:<asp:Label runat="server" ID="Label_min" Text='<%# Eval("main.temp_min") %>' />
max:<asp:Label runat="server" ID="Label_max" Text='<%# Eval("main.temp_max") %>' />
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
我的C#代码:
protected void reptrData_ItemCommand(object source, RepeaterCommandEventArgs e)
{
Label lblCity = e.Item.FindControl("lblCity_Country") as Label;
city_name = lblCity.Text;
Label lblHumidity = e.Item.FindControl("Label_humidity") as Label;
humidity = lblHumidity.Text;
Label LblMin = e.Item.FindControl("Label_min") as Label;
humidity = lblHumidity.Text;
Label LblMax = e.Item.FindControl("Label_max") as Label;
temp_max = lblHumidity.Text;
}
protected void GetWeatherInfo(object sender, EventArgs e)
{
string appID = "hidden";
//string url = string.Format("http://api.openweathermap.org/data/2.5/weather?q={0}&units=metric&cnt=2&APPID={1}",txtCity.Text,appID);
string url = string.Format("http://api.openweathermap.org/data/2.5/forecast?q={0},us&units=metric&cnt=5&APPID={1}", txtCity.Text, appID);
using (WebClient client = new WebClient())
{
string json = client.DownloadString(url);
JavaScriptSerializer serializer = new JavaScriptSerializer();
WeatherInfo weatherinfo = serializer.Deserialize<WeatherInfo>(json);
Repeater_weatherReports.DataSource = weatherinfo.list;
Repeater_weatherReports.DataBind();
int i = 0;
foreach (List list in weatherinfo.list)
{
city_name = weatherinfo.city.name;
//lblDescription.Text = weatherinfo.list[0].weather[0].description;
temp_min = string.Format("{0}", Math.Round(weatherinfo.list[i].main.temp_min, 1));
temp_max = string.Format("{0}", Math.Round(weatherinfo.list[i].main.temp_max, 1));
humidity = weatherinfo.list[i].main.humidity.ToString();
// tblWeather.Visible = true;
i++;
}
}
我收到的错误消息是
'System.Web.dll中发生类型'System.Web.HttpException的异常,但未在用户代码中处理。其他信息:数据绑定:'_Default + List'不包含名称为'city'的属性。
这正在发生
<asp:Label runat="server" ID="lblCity_Country" Text='<%# Eval("city") %>' />
我以前没有处理数据绑定/使用Repeater
。 任何帮助,将不胜感激,
谢谢
看起来像是您的评估不正确的错误。
<asp:Label runat="server" ID="lblCity_Country" Text='<%# Eval("city") %>' />
您正在将数据与weatherinfo.list绑定
Repeater_weatherReports.DataSource = weatherinfo.list;
该列表不包含城市属性,但包含天气信息。
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