InputField.DeactivateInputField

public void DeactivateInputField ();

Description

Function to deactivate the InputField to stop the processing of Events and send OnSubmit if not canceled.

using UnityEngine;
using System.Collections;
using UnityEngine.UI; // Required when Using UI elements.

public class Example : MonoBehaviour
{
    public InputField mainInputField;

    // Deactivates the main input field when the Scene starts.
    void Start()
    {
        mainInputField.DeactivateInputField();
    }
}