I wrote a DateOnly structure. This uses a DateTime under the skin but no time parts are exposed publically:
using System;public struct DateOnly : IComparable, IFormattable, IComparable<DateOnly>, IEquatable<DateOnly>{ private DateTime _dateValue; public int CompareTo(object obj) { if (obj == null) { return 1; } DateOnly otherDateOnly = (DateOnly)obj; if (otherDateOnly != null) { return ToDateTime().CompareTo(otherDateOnly.ToDateTime()); } else { throw new ArgumentException("Object is not a DateOnly"); } } int IComparable<DateOnly>.CompareTo(DateOnly other) { return this.CompareToOfT(other); } public int CompareToOfT(DateOnly other) { // If other is not a valid object reference, this instance is greater. if (other == new DateOnly()) { return 1; } return this.ToDateTime().CompareTo(other.ToDateTime()); } bool IEquatable<DateOnly>.Equals(DateOnly other) { return this.EqualsOfT(other); } public bool EqualsOfT(DateOnly other) { if (other == new DateOnly()) { return false; } if (this.Year == other.Year && this.Month == other.Month && this.Day == other.Day) { return true; } else { return false; } } public static DateOnly Now() { return new DateOnly(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day); } public static bool TryParse(string s, ref DateOnly result) { DateTime dateValue = default(DateTime); if (DateTime.TryParse(s, out dateValue)) { result = new DateOnly(dateValue.Year, dateValue.Month, dateValue.Day); return true; } else { return false; } } public static DateOnly Parse(string s) { DateTime dateValue = default(DateTime); dateValue = DateTime.Parse(s); return new DateOnly(dateValue.Year, dateValue.Month, dateValue.Day); } public static DateOnly ParseExact(string s, string format) { CultureInfo provider = CultureInfo.InvariantCulture; DateTime dateValue = default(DateTime); dateValue = DateTime.ParseExact(s, format, provider); return new DateOnly(dateValue.Year, dateValue.Month, dateValue.Day); } public DateOnly(int yearValue, int monthValue, int dayValue) : this() { Year = yearValue; Month = monthValue; Day = dayValue; } public DateOnly AddDays(double value) { DateTime d = new DateTime(this.Year, this.Month, this.Day); d = d.AddDays(value); return new DateOnly(d.Year, d.Month, d.Day); } public DateOnly AddMonths(int months) { DateTime d = new DateTime(this.Year, this.Month, this.Day); d = d.AddMonths(months); return new DateOnly(d.Year, d.Month, d.Day); } public DateOnly AddYears(int years) { DateTime d = new DateTime(this.Year, this.Month, this.Day); d = d.AddYears(years); return new DateOnly(d.Year, d.Month, d.Day); } public DayOfWeek DayOfWeek { get { return _dateValue.DayOfWeek; } } public DateTime ToDateTime() { return _dateValue; } public int Year { get { return _dateValue.Year; } set { _dateValue = new DateTime(value, Month, Day); } } public int Month { get { return _dateValue.Month; } set { _dateValue = new DateTime(Year, value, Day); } } public int Day { get { return _dateValue.Day; } set { _dateValue = new DateTime(Year, Month, value); } } public static bool operator == (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() == aDateOnly2.ToDateTime()); } public static bool operator != (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() != aDateOnly2.ToDateTime()); } public static bool operator > (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() > aDateOnly2.ToDateTime()); } public static bool operator < (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() < aDateOnly2.ToDateTime()); } public static bool operator >= (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() >= aDateOnly2.ToDateTime()); } public static bool operator <= (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() <= aDateOnly2.ToDateTime()); } public static TimeSpan operator - (DateOnly aDateOnly1, DateOnly aDateOnly2) { return (aDateOnly1.ToDateTime() - aDateOnly2.ToDateTime()); } public override string ToString() { return _dateValue.ToShortDateString(); } public string ToString(string format) { return _dateValue.ToString(format); } public string ToString(string fmt, IFormatProvider provider) { return string.Format("{0:"+ fmt +"}", _dateValue); } public string ToShortDateString() { return _dateValue.ToShortDateString(); } public string ToDbFormat() { return string.Format("{0:yyyy-MM-dd}", _dateValue); }}This is converted from VB.NET, so apologies if some conversions are not 100%
