arithmetic operation resulted in an overflow.

See more:

C#

public IDataEditState[] Children
{
    get
    {
        if (m_ChildrenCache == null)
        {
            m_ChildrenCache = new IDataEditState[m_Children.Count - 1];
                 
            m_Children.Values.CopyTo(m_ChildrenCache, 0);
        }
        return m_ChildrenCache;
    }
}

In the above code one exception threw by system as "arithmetic operation resulted in an overflow."
m_Children.Count is coming 0.

please help me out ....