Index: System.Data.SqlTypes/SqlDateTime.cs
===================================================================
--- System.Data.SqlTypes/SqlDateTime.cs	(revision 76059)
+++ System.Data.SqlTypes/SqlDateTime.cs	(working copy)
@@ -65,9 +65,10 @@
 
 		static SqlDateTime ()
 		{
-			DateTime t = new DateTime (9999, 12, 31, 23, 59, 59);
-			long ticks = (long) (t.Ticks + (997 * 10000));
-			MaxValue.value = new DateTime (ticks);
+			//DateTime t = new DateTime (9999, 12, 31, 23, 59, 59);
+			//long ticks = (long) (t.Ticks + (997 * 10000));
+			// the value of ticks would be always equal to '3155378975999970000'
+			MaxValue.value = new DateTime (3155378975999970000);
 			MaxValue.notNull = true;
 
 			MinValue.value = new DateTime (1753, 1, 1);
@@ -93,29 +94,12 @@
 			CheckRange (this);
 		}
 
-		public SqlDateTime (int year, int month, int day) 
-		{
-			try {
-				this.value = new DateTime (year, month, day);
-			} catch (ArgumentOutOfRangeException ex) {
-				throw new SqlTypeException (ex.Message);
-			}
-			notNull = true;
-			CheckRange (this);
-		}
+		public SqlDateTime (int year, int month, int day) : this (year, month, day, 0, 0, 0, (double) 0)
+		{ }
 
-		public SqlDateTime (int year, int month, int day, int hour, int minute, int second) 
-		{
-			try {
-				this.value = new DateTime (year, month, day, hour, minute, second);
-			} catch (ArgumentOutOfRangeException ex) {
-				throw new SqlTypeException (ex.Message);
-			}
-			notNull = true;
-			CheckRange (this);
-		}
+		public SqlDateTime (int year, int month, int day, int hour, int minute, int second) : this (year, month, day, hour, minute, second, (double) 0)
+		{ }
 
-		[MonoTODO ("Round milisecond")]
 		public SqlDateTime (int year, int month, int day, int hour, int minute, int second, double millisecond) 
 		{
 			try {
@@ -130,20 +114,8 @@
 			CheckRange (this);
 		}
 
-		[MonoTODO ("Round bilisecond")]
-		public SqlDateTime (int year, int month, int day, int hour, int minute, int second, int bilisecond) // bilisecond??
-		{
-			try {
-				DateTime t = new DateTime(year, month, day, hour, minute, second);
-			
-				long dateTick = (long) (t.Ticks + bilisecond * 10);
-				this.value = new DateTime (dateTick);
-			} catch (ArgumentOutOfRangeException ex) {
-				throw new SqlTypeException (ex.Message);
-			}
-			notNull = true;
-			CheckRange (this);
-		}
+		public SqlDateTime (int year, int month, int day, int hour, int minute, int second, int bilisecond) : this (year, month, day, hour, minute, second, (double) bilisecond / 1000)
+		{ }
 
 		#endregion
 
Index: System.Data.SqlTypes/ChangeLog
===================================================================
--- System.Data.SqlTypes/ChangeLog	(revision 76059)
+++ System.Data.SqlTypes/ChangeLog	(working copy)
@@ -1,3 +1,8 @@
+2007-04-25  Alexandre Miguel Pedro Gomes  <alexmipego@gmail.com>
+
+	* SqlDateTime.cs: Constructor cleaup, optimizations and obsolete
+	MONOTODO attribute removal.
+
 2007-03-09  Nagappan A  <anagappan@novell.com>
 
 	* SqlBoolean.cs (GreaterThan, GreaterThanOrEqual, LessThan)