How to fix “ArgumentException” error?

here is the solution for “ArgumentException” error while developing VR application using Unity, along with some example code:

Firstly, “ArgumentException” error occurs due to passing an invalid argument to a method. This error is a common issue when developing VR applications using Unity.

To resolve this error, you can follow these steps:

  • Identify the cause of the error: Check the name and value of the argument specified in the error message. This can help you understand which argument is invalid.

  • Ensure the argument has a valid value: The value of the argument should be consistent with the expectations of the method. Debug or use the print() function to verify that the value is set correctly.

  • Use debugging tools: Unity offers several debugging tools to identify the cause of the error more easily. You can use these tools to debug your code, such as stepping through your code using MonoDevelop.

Below is an example code snippet that may result in an “ArgumentException” error when creating a VR application in Unity:

				
					public void SetPosition(float x, float y, float z)
{
    if (x < 0 || y < 0 || z < 0)
    {
        throw new ArgumentException("Values cannot be negative.");
    }
    transform.position = new Vector3(x, y, z);
}

				
			

In this code snippet, the SetPosition() method takes three coordinate values and sets the transform.position by combining these values with a new Vector3 object. However, if any of the x, y, or z values are negative, an “ArgumentException” is thrown.

To fix this error, you can modify the SetPosition() method as follows:

				
					public void SetPosition(float x, float y, float z)
{
    if (x < 0 || y < 0 || z < 0)
    {
        throw new ArgumentException("Values cannot be negative.");
    }
    else
    {
        transform.position = new Vector3(x, y, z);
    }
}

				
			

In this code snippet, if any of the x, y, or z values are negative, an “ArgumentException” is thrown. Otherwise, the values are assigned to the Vector3 object and transform.position is set accordingly.