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How to show or hide the needle in WinForms RadialGauge?
Show or hide the needle
You can show or hide the Needle by using the property named “ShowNeedle” in RadialGauge.
C#
//To show the Needle of RadialGauge this.radialGauge1.ShowNeedle = true; //To hide the Needle of RadialGauge this.radialGauge1.ShowNeedle = false;
VB
'To show the Needle of RadialGauge Me.radialGauge1.ShowNeedle = True 'To hide the Needle of RadialGauge Me.radialGauge1.ShowNeedle = False
Note:
The default value of the ShowNeedle is true.

Figure 1. Needle is shown in RadialGauge.

Figure 2. ShowNeedle property is hidden in RadialGauge.
Samples:
C#: RadialGauge_NeedleVisible_C#
VB: RadialGauge_NeedleVisible_VB
Reference link: https://help.syncfusion.com/windowsforms/radial-gauge/radial-gauge