/// <summary>
/// Returns the zero-based index of the first occurrence of the specified
/// <see cref="FormMappingDataRelation"/> in the <see cref="FormMappingDataRelationList"/>.
/// </summary>
/// <param name="value">The <see cref="FormMappingDataRelation"/> object
/// to locate in the <see cref="FormMappingDataRelationList"/>.
/// This argument can be a null reference.
/// </param>
/// <returns>
/// The zero-based index of the first occurrence of <paramref name="value"/>
/// in the <see cref="FormMappingDataRelationList"/>, if found; otherwise, -1.
/// </returns>
/// <remarks>Please refer to <see cref="ArrayList.IndexOf"/> for details.</remarks>
public virtual int IndexOf(FormMappingDataRelation value)
{
if ((object) value == null)
{
for (int i = 0; i < this._count; i++)
if ((object) this._array[i] == null)
return i;
return -1;
}
for (int i = 0; i < this._count; i++)
if (value.Equals(this._array[i]))
return i;
return -1;
}