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我是 WPF 的新手。我有一个ComboBox具有多个值的 a HyperLink，每当ComboBox值发生变化时，我都想相应地更改NavigateUri。HyperLink

在cs文件中，我有一个字典，其中的键与组合项相同，每个键的值是我要根据ComboBox选择导航到的链接。

 LinkQuery["A"] = "https://google.com";
 LinkQuery["B"] = "https://facebook.com";
 LinkQuery["C"] = "https://Youtube.com";

<ComboBox x:Name="box_ComboBox"  Visibility="Visible"  Grid.Column="5" Grid.Row="4" Width="90"
    ItemsSource="{Binding Path=Fields}"
    IsSynchronizedWithCurrentItem="True"
    SelectedValue="{Binding Path=Field}" Grid.ColumnSpan="2" HorizontalAlignment="Left" Height="22" VerticalAlignment="Top" SelectionChanged="component_ComboBox_SelectionChanged"/>

....

<TextBlock x:Name="LinkToQuery" Grid.Row="39" Grid.Column="1" Grid.ColumnSpan="4" Margin="10">           
            <Hyperlink x:Name="URLQuery" RequestNavigate="Hyperlink_RequestNavigate" Foreground="Blue">
                Selected: A
            </Hyperlink>
 </TextBlock>

还有cs文件：

private void Hyperlink_RequestNavigate(object sender, RequestNavigateEventArgs e)
    {
        Process.Start(e.Uri.AbsoluteUri);
        e.Handled = true;
    }

private void component_ComboBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
    {
        string selectedComponent = box_ComboBox.SelectedItem.ToString();
        LinkToQuery.Text = string.Format("Selected: {0} ", box_ComboBox.SelectedItem.ToString());
        URLQuery.NavigateUri = new System.Uri(LinkQuery[selectedComponent],System.UriKind.Absolute);

    }

当我更改组合选择时，文本确实会正确更改，但链接不起作用。

谢谢你。

4

1 回答 1

1

将一个Run元素放在里面Hyperlink并设置这个元素的Text属性：

<TextBlock x:Name="LinkToQuery" Grid.Row="39" Grid.Column="1" Grid.ColumnSpan="4" Margin="10">           
    <Hyperlink x:Name="URLQuery" RequestNavigate="Hyperlink_RequestNavigate" Foreground="Blue">
        <Run x:Name="linkText" Text="Selected: A" />
    </Hyperlink>
</TextBlock>

private void component_ComboBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
    string selectedComponent = box_ComboBox.SelectedItem.ToString();
    linkText.Text = string.Format("Selected: {0} ", selectedComponent);
    URLQuery.NavigateUri = new System.Uri(LinkQuery[selectedComponent], System.UriKind.Absolute);
}
于 2018-05-31T11:14:11.683 回答