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[英]Search for value in radGridView using C# just finds values in first row of radGridView
[英]Access row values of RadGridView in C#
我可能會以錯誤的方式解決這個問題,但我不確定。 我有一個搜索欄,用戶可以輸入地址。 然后請求發送到Google的API,與輸入的地址對應的地址集將顯示在我的RadGridView中。 我的地址很好。
現在我想獲取地址的lat和lng值並在我的地圖上找到它們。 我遇到的問題是,在選擇地址時,我無法訪問RadGridView中的行值。 我創建了一個在用戶選擇地址時被觸發的方法,但grid.SelectedItem返回null。
我可能會以錯誤的方式解決這個問題。 有任何想法嗎?
xaml.cs
private void SearchTB_KeyDown(object sender, KeyEventArgs e)
{
searchclose.Opacity = 1;
if (e.Key == Key.Enter)
{
var address = SearchTB.Text;
var requestUri = string.Format("http://localhost/media/TextToSpeech/TextToSpeechService.svc/getDataProxy?url=https://maps.googleapis.com/maps/api/geocode/json?address={0}&key=AIzaSyCgsNpuUoH7m6U7lqeZjlLZ3MgM15PW15o", Uri.EscapeDataString(address));
HttpWebRequest request = WebRequest.Create(requestUri) as HttpWebRequest;
request.Method = "GET";
IAsyncResult result = request.BeginGetResponse(new AsyncCallback(RequestCompleted), request);
}
}
private void RequestCompleted(IAsyncResult result)
{
var request = (HttpWebRequest)result.AsyncState;
var response = (HttpWebResponse)request.EndGetResponse(result);
Stream stream = response.GetResponseStream();
try
{
StreamReader reader = new StreamReader(stream);
string text = reader.ReadToEnd();
Regex rgx = new Regex("<.*\\>");
string newResult = rgx.Replace(text, "");
JObject json = JObject.Parse(newResult);
JArray results = (JArray)json["results"];
List<object> locationList = new List<object>();
ObservableCollection<object> AddressList = new ObservableCollection<object>();
if (results.Count == 0)
{
Dispatcher.BeginInvoke(new Action(() => MessageBox.Show("No results found")));
}
else
{
foreach (JObject obj in results)
{
if (obj == null)
{
Dispatcher.BeginInvoke(new Action(() => MessageBox.Show("Address returned no results")));
}
string formattedAddress = (string)obj["formatted_address"];
AddressList.Add(formattedAddress);
object loc = (object)obj["geometry"]["location"];
locationList.Add(loc);
//TODO Add exception handling
}
Dispatcher.BeginInvoke(new Action(() => addressGrid.ItemsSource = AddressList));
}
}
catch (Exception ex)
{
Dispatcher.BeginInvoke(new Action(() => MessageBox.Show("Error" + ex.Message)));
}
}
private void SelectedAddress_Click(object sender, RoutedEventArgs e)
{
object dodo = "";
dodo = addressGrid.SelectedItem;
}
XAML
<!--Address Results-->
<telerik:RadGridView Grid.Row="2" AutoGenerateColumns="False" x:Name="addressGrid" Margin="18 0 0 18" CanUserFreezeColumns="False" CanUserSelect="True"
EnableColumnVirtualization="True" EnableRowVirtualization="True" ShowGroupPanel="False" ScrollViewer.VerticalScrollBarVisibility="Visible"
CanUserDeleteRows="False" RowIndicatorVisibility="Collapsed" DataLoadMode="Asynchronous" HeaderRowStyle="{StaticResource ZoneActivityHeaderRowStyle}"
GroupPanelStyle="{StaticResource GroupPanelStyle}" Background="#00000000" VerticalGridLinesBrush="#00000000" HorizontalGridLinesBrush="#00000000" AlternationCount="2"
RowHeight="32" ShowColumnHeaders="False" RowStyle="{StaticResource ActivityRowStyle}" AlternateRowStyle="{StaticResource ActivityAlternateRowStyle}">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn Header="Targetting" Width="35" IsReadOnly="True" IsFilterable="False" ShowDistinctFilters="True" IsGroupable="False" IsVisible="True">
<telerik:GridViewDataColumn.CellTemplate>
<DataTemplate>
<ctrl:TargetButton x:Name="targetButton" VerticalAlignment="Center" HorizontalAlignment="Center" Visibility="Visible" />
</DataTemplate>
</telerik:GridViewDataColumn.CellTemplate>
</telerik:GridViewDataColumn>
<telerik:GridViewDataColumn Header="Address" Width="*" IsReadOnly="True"
IsFilterable="False" ShowDistinctFilters="True" IsGroupable="False">
<telerik:GridViewDataColumn.CellTemplate>
<DataTemplate>
<Grid>
<TextBlock Text="{Binding}" Foreground="White" FontFamily="Segoe UI"
FontSize="12" VerticalAlignment="Center" Margin="5" TextWrapping="Wrap" />
<Border Background="#00000000" Height="40" Margin="-5 0" Cursor="Hand" MouseLeftButtonDown="SelectedAddress_Click" />
</Grid>
</DataTemplate>
</telerik:GridViewDataColumn.CellTemplate>
</telerik:GridViewDataColumn>
</telerik:RadGridView.Columns>
</telerik:RadGridView>
您可以將事件處理程序的sender參數強制轉換為Border,然后使用其DataContext屬性訪問當前數據對象:
private void SelectedAddress_Click(object sender, RoutedEventArgs e)
{
Border border = sender as Border;
object dodo = border.DataContext;
string address = dodo as string;
if (!string.IsNullOrEmpty(address))
{
//...
}
}
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