// If Equals() returns true for a pair of objects
        // then GetHashCode() must return the same value for these objects.

        public override int GetHashCode()
        {
            //Get hash code for the Name field if it is not null.
            int hashProductName = Bar_Pos_Name == null ? 0 : Bar_Pos_Name.GetHashCode();

            //Get hash code for the Code field.
            int hashProductCode = Bar_Pos_No.GetHashCode();

            //Calculate the hash code for the product.
            return(hashProductName ^ hashProductCode);
        }
        public bool Equals(BarPositions other)
        {
            //Check whether the compared object is null.
            if (Object.ReferenceEquals(other, null))
            {
                return(false);
            }

            //Check whether the compared object references the same data.
            if (Object.ReferenceEquals(this, other))
            {
                return(true);
            }

            //Check whether the products' properties are equal.
            return(Bar_Pos_Name.Equals(other.Bar_Pos_Name) && Installation_No.Equals(other.Installation_No));
        }