Script for both TextInput and Slider UnityUI

CompherensiveSlider.cs

  public class CompherensiveSlider : MonoBehaviour
  {
      //Since we're using UnityEvent<T0> we need to implement the float type
      [Serializable]
      public class FloatEvent : UnityEvent<float> { }

      public FloatEvent ValueChanged;

      [SerializeField] //Display private variable in Inspector
      private InputField _inputField;

      [SerializeField]
      private Slider _slider;

      private float _inputFieldValue;

      public float InputFieldValue
      {
          get { return _inputFieldValue; }
          private set
          {
              _inputFieldValue = value;
              ValueChanged?.Invoke(value); // C# 6 for use in Unity 2017.1 and above
          }
      }

      void Start()
      {
          //http://blogs.unity3d.com/2015/08/25/the-unity-assertion-library/
          Assert.IsNotNull(_inputField, "CompherensiveSlider Requires TextInput UI Component!");
          Assert.IsNotNull(_slider, "CompherensiveSlider Requires Slider UI Component!");

          //Listen to value changes, and events
          _slider.onValueChanged.AddListener(SliderChanged);
          _inputField.onValueChanged.AddListener(InputFieldValueChanged);
      }

      /// <summary>
      /// Updates cached value as the InputField changes
      /// </summary>
      /// <param name="value">InputField string</param>
      void InputFieldValueChanged(string value)
      {
          float floatValue;
          if (float.TryParse(value, out floatValue))
          {
              InputFieldValue = floatValue;
          }

          if(_slider.value != InputFieldValue)
              _slider.value = InputFieldValue;
      }

      /// <summary>
      /// Calls the UnityEvent to fire with the value
      /// </summary>
      void SliderChanged(float value)
      {
          if (value == InputFieldValue) return;
          InputFieldValue = value;
          _inputField.text = value.ToString();
      }
  }