Home / Community & Support / Developer Productivity Tools Forums / WPF > Gauges > RadialBar StartValue

• Kevin Hendriks

  Posted on Jan 26, 2011 (permalink)

  On my Gauage I have a Needel, this needle has a certain value. now I want the Radial bar to start at this value and then go further.
  Is this possible? Or do I need to use the radial range?

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• Answer Andrey Andrey

  Posted on Jan 28, 2011 (permalink)

  Hi Kevin Hendriks,
  
  It can be implemented with radial bar, but you still should use ranges. The radial bar can use background specified in ranges. So you can setup 2 ranges: 1 with transparent indicator's background and 1 with non- transparent indicator's background, and force radial range use range background in the ProportionalBrush mode. For example:
  
  

  <telerik:RadialGauge>

      <telerik:RadialScale>

          <telerik:RangeList>

              <telerik:RangeBase Name="invisible"

                         Min="0" Max="10"

                         IndicatorBackground="Transparent" />

              <telerik:RangeBase Name="visible"

                         Min="10" Max="100"

                         IndicatorBackground="Green" />

          </telerik:RangeList>

          <telerik:IndicatorList>

              <telerik:RadialBar Name="bar" 

                         UseRangeColor="True" 

                         RangeColorMode="ProportionalBrush"

                         Value="20" />

              <telerik:Needle Name="needle" Value="10" ValueChanged="SetupRanges" />

          </telerik:IndicatorList>

      </telerik:RadialScale>

  </telerik:RadialGauge>

  
  

  private void SetupRanges(object sender, Windows.Controls.Gauges.RoutedPropertyChangedEventArgs<double> e)

  {

      if (this.needle != null)

      {

          this.invisible.Max = needle.Value;

          this.visible.Min = needle.Value;

      }

  }

  
  
  All the best,
  Andrey Murzov
  the Telerik team

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