我的XAML中有几个图像,如下所示(在本示例中,我包含了两个图像)。
<StackLayout Orientation="Horizontal" HorizontalOptions="Fill" Padding="0,5,0,5">
<Image x:Name="Image1" ClassId="{Binding Image1}" Source="tickoff.png" HeightRequest="18">
<Image.GestureRecognizers>
<TapGestureRecognizer
Tapped="SelectedImage"
NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>
<Label Text="Asian Foods" FontSize="16" HorizontalOptions="Center" Margin="5,0,0,0"
TextColor="{StaticResource greyishBrown}"/>
</StackLayout>
StackLayout Orientation="Horizontal" HorizontalOptions="Fill" Padding="0,5,0,5">
<Image x:Name="Image2" ClassId="{Binding Image2}" Source="tickoff.png" HeightRequest="18">
<Image.GestureRecognizers>
<TapGestureRecognizer
Tapped="SelectedImage"
NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>
<Label Text="Japanese Foods" FontSize="16" HorizontalOptions="Center" Margin="5,0,0,0"
TextColor="{StaticResource greyishBrown}"/>
</StackLayout>
我想检查用户单击了什么图像。堡垒,我正在使用ClassId。我在所有图像中都包含了ClassId。这在代码的后面有一个方法,我要从那里访问classId。
但是,当用户单击图像时,我没有得到ID。我是C#和Xamarin Forms的新手。有人可以帮我吗。
public void SelectedImage(object sender, EventArgs eventArgs)
{
Image image = (Image)sender;
string imageString = image.ClassId;
DisplayAlert("Test", imageSender.ClassId,"OK");
//TODO
}
答案 0 :(得分:0)
XAML
<StackLayout Orientation="Horizontal" HorizontalOptions="Fill" Padding="0,5,0,5">
<Image x:Name="Image1" ClassId="Image1" Source="tickoff.png" HeightRequest="18">
<Image.GestureRecognizers>
<TapGestureRecognizer
Tapped="SelectedImage"
NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>
<Label Text="Asian Foods" FontSize="16" HorizontalOptions="Center" Margin="5,0,0,0" TextColor="{StaticResource greyishBrown}" />
</StackLayout>
<StackLayout Orientation="Horizontal" HorizontalOptions="Fill" Padding="0,5,0,5">
<Image x:Name="Image2" ClassId="Image2" Source="tickoff.png" HeightRequest="18">
<Image.GestureRecognizers>
<TapGestureRecognizer
Tapped="SelectedImage"
NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>
<Label Text="Japanese Foods" FontSize="16" HorizontalOptions="Center" Margin="5,0,0,0" TextColor="{StaticResource greyishBrown}"
/>
</StackLayout>
C#
public void SelectedImage(object sender, EventArgs eventArgs)
{
Image image = (Image)sender;
string imageString = image.ClassId;
DisplayAlert("Test", imageString ,"OK");
//TODO
}