How to add Parameters in ControlTemplate xamarin forms












0















I have a template for HeaderItem with the imageSource in it, so all tabs have the same image. How can I bring an additional parameter to use different images?



Template



        <ControlTemplate x:Key="HeaderControlTemplate">
<Grid HorizontalOptions="FillAndExpand">

<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Image Source="{converters:ImageResource Media.logo-pp.png}" Grid.Row="0" WidthRequest="25" />
<Label Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
<BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
StyleClass="tabViewHeaderBgColor"
HorizontalOptions="Fill"
HeightRequest="2" />
</Grid>
</ControlTemplate>


Tabs



 <telerikPrimitives:RadTabView>
<telerikPrimitives:RadTabView.Items>
<telerikPrimitives:TabViewItem>
<telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewHeaderItem Text="1" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
</telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewItem.Content>
//SomeContent
</telerikPrimitives:TabViewItem.Content>
</telerikPrimitives:TabViewItem>

<telerikPrimitives:TabViewItem>
<telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewHeaderItem Text="2" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
</telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewItem.Content>
//SomeContent
</telerikPrimitives:TabViewItem.Content>
</telerikPrimitives:TabViewItem>

<telerikPrimitives:TabViewItem>
<telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewHeaderItem Text="3" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
</telerikPrimitives:TabViewItem.Header>
<telerikPrimitives:TabViewItem.Content>
//SomeContent
</telerikPrimitives:TabViewItem.Content>
</telerikPrimitives:TabViewItem>
<telerikPrimitives:RadTabView>




TabViewHeaderItem also doesn't include the Image Source. So I don't know how to solve this. Sure I can do 3 templates, but it's not what i want.










share|improve this question



























    0















    I have a template for HeaderItem with the imageSource in it, so all tabs have the same image. How can I bring an additional parameter to use different images?



    Template



            <ControlTemplate x:Key="HeaderControlTemplate">
    <Grid HorizontalOptions="FillAndExpand">

    <Grid.RowDefinitions>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <Image Source="{converters:ImageResource Media.logo-pp.png}" Grid.Row="0" WidthRequest="25" />
    <Label Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
    <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
    StyleClass="tabViewHeaderBgColor"
    HorizontalOptions="Fill"
    HeightRequest="2" />
    </Grid>
    </ControlTemplate>


    Tabs



     <telerikPrimitives:RadTabView>
    <telerikPrimitives:RadTabView.Items>
    <telerikPrimitives:TabViewItem>
    <telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewHeaderItem Text="1" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
    </telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewItem.Content>
    //SomeContent
    </telerikPrimitives:TabViewItem.Content>
    </telerikPrimitives:TabViewItem>

    <telerikPrimitives:TabViewItem>
    <telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewHeaderItem Text="2" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
    </telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewItem.Content>
    //SomeContent
    </telerikPrimitives:TabViewItem.Content>
    </telerikPrimitives:TabViewItem>

    <telerikPrimitives:TabViewItem>
    <telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewHeaderItem Text="3" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
    </telerikPrimitives:TabViewItem.Header>
    <telerikPrimitives:TabViewItem.Content>
    //SomeContent
    </telerikPrimitives:TabViewItem.Content>
    </telerikPrimitives:TabViewItem>
    <telerikPrimitives:RadTabView>




    TabViewHeaderItem also doesn't include the Image Source. So I don't know how to solve this. Sure I can do 3 templates, but it's not what i want.










    share|improve this question

























      0












      0








      0








      I have a template for HeaderItem with the imageSource in it, so all tabs have the same image. How can I bring an additional parameter to use different images?



      Template



              <ControlTemplate x:Key="HeaderControlTemplate">
      <Grid HorizontalOptions="FillAndExpand">

      <Grid.RowDefinitions>
      <RowDefinition Height="Auto"/>
      <RowDefinition Height="Auto"/>
      <RowDefinition Height="Auto"/>
      </Grid.RowDefinitions>
      <Image Source="{converters:ImageResource Media.logo-pp.png}" Grid.Row="0" WidthRequest="25" />
      <Label Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
      <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
      StyleClass="tabViewHeaderBgColor"
      HorizontalOptions="Fill"
      HeightRequest="2" />
      </Grid>
      </ControlTemplate>


      Tabs



       <telerikPrimitives:RadTabView>
      <telerikPrimitives:RadTabView.Items>
      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="1" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>

      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="2" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>

      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="3" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>
      <telerikPrimitives:RadTabView>




      TabViewHeaderItem also doesn't include the Image Source. So I don't know how to solve this. Sure I can do 3 templates, but it's not what i want.










      share|improve this question














      I have a template for HeaderItem with the imageSource in it, so all tabs have the same image. How can I bring an additional parameter to use different images?



      Template



              <ControlTemplate x:Key="HeaderControlTemplate">
      <Grid HorizontalOptions="FillAndExpand">

      <Grid.RowDefinitions>
      <RowDefinition Height="Auto"/>
      <RowDefinition Height="Auto"/>
      <RowDefinition Height="Auto"/>
      </Grid.RowDefinitions>
      <Image Source="{converters:ImageResource Media.logo-pp.png}" Grid.Row="0" WidthRequest="25" />
      <Label Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
      <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
      StyleClass="tabViewHeaderBgColor"
      HorizontalOptions="Fill"
      HeightRequest="2" />
      </Grid>
      </ControlTemplate>


      Tabs



       <telerikPrimitives:RadTabView>
      <telerikPrimitives:RadTabView.Items>
      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="1" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>

      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="2" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>

      <telerikPrimitives:TabViewItem>
      <telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewHeaderItem Text="3" ControlTemplate="{StaticResource HeaderControlTemplate}"/>
      </telerikPrimitives:TabViewItem.Header>
      <telerikPrimitives:TabViewItem.Content>
      //SomeContent
      </telerikPrimitives:TabViewItem.Content>
      </telerikPrimitives:TabViewItem>
      <telerikPrimitives:RadTabView>




      TabViewHeaderItem also doesn't include the Image Source. So I don't know how to solve this. Sure I can do 3 templates, but it's not what i want.







      c# xaml xamarin xamarin.forms telerik






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      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 14:36









      ViacheslavViacheslav

      31




      31
























          1 Answer
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          0














          I assume that Media.logo-pp.png is one of the 3 images you want to show. You could use the following trick to avoid duplicating templates:



          First of all create a converter that will convert the tab name into the target image.



          public class TabToImageConverter : IValueConverter
          {
          public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
          {
          string imageName;
          switch (value.ToString())
          {
          case "1":
          imageName= "logo-pp.png"
          break;
          case "2":
          imageName= "logo-pp2.png"
          break;
          case "3":
          imageName= "logo-pp3.png"
          break;
          default:
          imageName= "logo-pp.png"
          break;
          }
          return ImageSource.FromResource($"Media.{imageName}", this.GetType().GetTypeInfo().Assembly);
          }

          public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
          {
          throw new NotImplementedException();
          }
          }


          Then change your template definition as follow:




          1. add a new namespace for your converter class:


          xmlns:converters="clr-namespace:Metadia.Converters"




          1. add a static resource and reference the above converter


          <ResourceDictionary>
          <converters:TabToImageConverter x:Key="TabToImage" />




          1. add a name to the label so it can be referenced



          2. add binding to image source using the label's Text property and the converter






                <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Image Source="{TemplateBinding Source={x:Reference tabTitle}, Path=Text, Converter={StaticResource {TabToImage}}" Grid.Row="0" WidthRequest="25" />
            <Label x:Name="tabTitle" Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
            <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
            StyleClass="tabViewHeaderBgColor"
            HorizontalOptions="Fill"
            HeightRequest="2" />
            </Grid>





          Et voilà!



          Note that if you rename the images the same as the tabs text, the converter could simply return (if not null):



          return ImageSource.FromResource($"Media.{value.ToString()}", this.GetType().GetTypeInfo().Assembly);


          Hope this helps & happy coding!






          share|improve this answer























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            1 Answer
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            1 Answer
            1






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes









            0














            I assume that Media.logo-pp.png is one of the 3 images you want to show. You could use the following trick to avoid duplicating templates:



            First of all create a converter that will convert the tab name into the target image.



            public class TabToImageConverter : IValueConverter
            {
            public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
            {
            string imageName;
            switch (value.ToString())
            {
            case "1":
            imageName= "logo-pp.png"
            break;
            case "2":
            imageName= "logo-pp2.png"
            break;
            case "3":
            imageName= "logo-pp3.png"
            break;
            default:
            imageName= "logo-pp.png"
            break;
            }
            return ImageSource.FromResource($"Media.{imageName}", this.GetType().GetTypeInfo().Assembly);
            }

            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
            {
            throw new NotImplementedException();
            }
            }


            Then change your template definition as follow:




            1. add a new namespace for your converter class:


            xmlns:converters="clr-namespace:Metadia.Converters"




            1. add a static resource and reference the above converter


            <ResourceDictionary>
            <converters:TabToImageConverter x:Key="TabToImage" />




            1. add a name to the label so it can be referenced



            2. add binding to image source using the label's Text property and the converter






                  <Grid.RowDefinitions>
              <RowDefinition Height="Auto"/>
              <RowDefinition Height="Auto"/>
              <RowDefinition Height="Auto"/>
              </Grid.RowDefinitions>
              <Image Source="{TemplateBinding Source={x:Reference tabTitle}, Path=Text, Converter={StaticResource {TabToImage}}" Grid.Row="0" WidthRequest="25" />
              <Label x:Name="tabTitle" Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
              <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
              StyleClass="tabViewHeaderBgColor"
              HorizontalOptions="Fill"
              HeightRequest="2" />
              </Grid>





            Et voilà!



            Note that if you rename the images the same as the tabs text, the converter could simply return (if not null):



            return ImageSource.FromResource($"Media.{value.ToString()}", this.GetType().GetTypeInfo().Assembly);


            Hope this helps & happy coding!






            share|improve this answer




























              0














              I assume that Media.logo-pp.png is one of the 3 images you want to show. You could use the following trick to avoid duplicating templates:



              First of all create a converter that will convert the tab name into the target image.



              public class TabToImageConverter : IValueConverter
              {
              public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
              {
              string imageName;
              switch (value.ToString())
              {
              case "1":
              imageName= "logo-pp.png"
              break;
              case "2":
              imageName= "logo-pp2.png"
              break;
              case "3":
              imageName= "logo-pp3.png"
              break;
              default:
              imageName= "logo-pp.png"
              break;
              }
              return ImageSource.FromResource($"Media.{imageName}", this.GetType().GetTypeInfo().Assembly);
              }

              public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
              {
              throw new NotImplementedException();
              }
              }


              Then change your template definition as follow:




              1. add a new namespace for your converter class:


              xmlns:converters="clr-namespace:Metadia.Converters"




              1. add a static resource and reference the above converter


              <ResourceDictionary>
              <converters:TabToImageConverter x:Key="TabToImage" />




              1. add a name to the label so it can be referenced



              2. add binding to image source using the label's Text property and the converter






                    <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <Image Source="{TemplateBinding Source={x:Reference tabTitle}, Path=Text, Converter={StaticResource {TabToImage}}" Grid.Row="0" WidthRequest="25" />
                <Label x:Name="tabTitle" Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
                <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
                StyleClass="tabViewHeaderBgColor"
                HorizontalOptions="Fill"
                HeightRequest="2" />
                </Grid>





              Et voilà!



              Note that if you rename the images the same as the tabs text, the converter could simply return (if not null):



              return ImageSource.FromResource($"Media.{value.ToString()}", this.GetType().GetTypeInfo().Assembly);


              Hope this helps & happy coding!






              share|improve this answer


























                0












                0








                0







                I assume that Media.logo-pp.png is one of the 3 images you want to show. You could use the following trick to avoid duplicating templates:



                First of all create a converter that will convert the tab name into the target image.



                public class TabToImageConverter : IValueConverter
                {
                public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
                {
                string imageName;
                switch (value.ToString())
                {
                case "1":
                imageName= "logo-pp.png"
                break;
                case "2":
                imageName= "logo-pp2.png"
                break;
                case "3":
                imageName= "logo-pp3.png"
                break;
                default:
                imageName= "logo-pp.png"
                break;
                }
                return ImageSource.FromResource($"Media.{imageName}", this.GetType().GetTypeInfo().Assembly);
                }

                public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
                {
                throw new NotImplementedException();
                }
                }


                Then change your template definition as follow:




                1. add a new namespace for your converter class:


                xmlns:converters="clr-namespace:Metadia.Converters"




                1. add a static resource and reference the above converter


                <ResourceDictionary>
                <converters:TabToImageConverter x:Key="TabToImage" />




                1. add a name to the label so it can be referenced



                2. add binding to image source using the label's Text property and the converter






                      <Grid.RowDefinitions>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="Auto"/>
                  </Grid.RowDefinitions>
                  <Image Source="{TemplateBinding Source={x:Reference tabTitle}, Path=Text, Converter={StaticResource {TabToImage}}" Grid.Row="0" WidthRequest="25" />
                  <Label x:Name="tabTitle" Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
                  <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
                  StyleClass="tabViewHeaderBgColor"
                  HorizontalOptions="Fill"
                  HeightRequest="2" />
                  </Grid>





                Et voilà!



                Note that if you rename the images the same as the tabs text, the converter could simply return (if not null):



                return ImageSource.FromResource($"Media.{value.ToString()}", this.GetType().GetTypeInfo().Assembly);


                Hope this helps & happy coding!






                share|improve this answer













                I assume that Media.logo-pp.png is one of the 3 images you want to show. You could use the following trick to avoid duplicating templates:



                First of all create a converter that will convert the tab name into the target image.



                public class TabToImageConverter : IValueConverter
                {
                public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
                {
                string imageName;
                switch (value.ToString())
                {
                case "1":
                imageName= "logo-pp.png"
                break;
                case "2":
                imageName= "logo-pp2.png"
                break;
                case "3":
                imageName= "logo-pp3.png"
                break;
                default:
                imageName= "logo-pp.png"
                break;
                }
                return ImageSource.FromResource($"Media.{imageName}", this.GetType().GetTypeInfo().Assembly);
                }

                public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
                {
                throw new NotImplementedException();
                }
                }


                Then change your template definition as follow:




                1. add a new namespace for your converter class:


                xmlns:converters="clr-namespace:Metadia.Converters"




                1. add a static resource and reference the above converter


                <ResourceDictionary>
                <converters:TabToImageConverter x:Key="TabToImage" />




                1. add a name to the label so it can be referenced



                2. add binding to image source using the label's Text property and the converter






                      <Grid.RowDefinitions>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="Auto"/>
                  <RowDefinition Height="Auto"/>
                  </Grid.RowDefinitions>
                  <Image Source="{TemplateBinding Source={x:Reference tabTitle}, Path=Text, Converter={StaticResource {TabToImage}}" Grid.Row="0" WidthRequest="25" />
                  <Label x:Name="tabTitle" Grid.Row="1" Text="{TemplateBinding Text}" HorizontalTextAlignment="Center" StyleClass="tabViewHeaderTextColor"/>
                  <BoxView Grid.Row="2" IsVisible="{TemplateBinding IsSelected}"
                  StyleClass="tabViewHeaderBgColor"
                  HorizontalOptions="Fill"
                  HeightRequest="2" />
                  </Grid>





                Et voilà!



                Note that if you rename the images the same as the tabs text, the converter could simply return (if not null):



                return ImageSource.FromResource($"Media.{value.ToString()}", this.GetType().GetTypeInfo().Assembly);


                Hope this helps & happy coding!







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 21 '18 at 23:54









                TaiT'sTaiT's

                1,157816




                1,157816
































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