DateTime controls: improved the date time parsing to better support different cultures.

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Implementation/DateTimeParser.cs

@@ -1,6 +1,9 @@
 using System;
 using System.Linq;
 using System.Globalization;
+using System.Text;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
 
 namespace Microsoft.Windows.Controls
 {
@@ -52,11 +55,9 @@ namespace Microsoft.Windows.Controls
 
         private string ResolveDateTimeString(string dateTime, DateTime currentDate)
         {
-            //  1/1/0001 12:00:00 AM
-            string[] dateParts = new string[3] { currentDate.Month.ToString(), currentDate.Day.ToString(), currentDate.Year.ToString() };
+            Dictionary<string, string> dateParts = GetDateParts(currentDate);
             string[] timeParts = new string[3] { currentDate.Hour.ToString(), currentDate.Minute.ToString(), currentDate.Second.ToString() };
-            string designator = "AM";
-
+            string designator = "";
             string[] dateTimeSeparators = new string[] { ",", " ", "-", DateTimeFormatInfo.DateSeparator, DateTimeFormatInfo.TimeSeparator };
 
             var dateTimeParts = dateTime.Split(dateTimeSeparators, StringSplitOptions.RemoveEmptyEntries).ToList();
@@ -72,14 +73,15 @@ namespace Microsoft.Windows.Controls
                 if (!format.Contains("ddd") && !format.Contains("GMT"))
                 {
                     if (format.Contains("M"))
-                        dateParts[0] = dateTimeParts[i];
+                        dateParts["Month"] = dateTimeParts[i];
                     else if (format.Contains("d"))
-                        dateParts[1] = dateTimeParts[i];
+                        dateParts["Day"] = dateTimeParts[i];
                     else if (format.Contains("y"))
                     {
-                        dateParts[2] = dateTimeParts[i];
-                        if (dateParts[2].Length == 2)
-                            dateParts[2] = string.Format("{0}{1}", currentDate.Year / 100, dateParts[2]);
+                        dateParts["Year"] = dateTimeParts[i];
+
+                        if (dateParts["Year"].Length == 2)
+                            dateParts["Year"] = string.Format("{0}{1}", currentDate.Year / 100, dateParts["Year"]);
                     }
                     else if (format.Contains("h") || format.Contains("H"))
                         timeParts[0] = dateTimeParts[i];
@@ -92,12 +94,41 @@ namespace Microsoft.Windows.Controls
                 }
             }
 
-            var date = string.Join(DateTimeFormatInfo.DateSeparator, dateParts);
+            var date = string.Join(DateTimeFormatInfo.DateSeparator, dateParts.Select(x => x.Value).ToArray());
             var time = string.Join(DateTimeFormatInfo.TimeSeparator, timeParts);
 
             return String.Format("{0} {1} {2}", date, time, designator);
         }
 
+        private Dictionary<string, string> GetDateParts(DateTime currentDate)
+        {
+            Dictionary<string, string> dateParts = new Dictionary<string, string>();
+            var dateFormatParts = DateTimeFormatInfo.ShortDatePattern.Split(new string[] { DateTimeFormatInfo.DateSeparator }, StringSplitOptions.RemoveEmptyEntries).ToList();
+            dateFormatParts.ForEach(item =>
+            {
+                string key = string.Empty;
+                string value = string.Empty;
+
+                if (item.Contains("M"))
+                {
+                    key = "Month";
+                    value = currentDate.Month.ToString();
+                }
+                else if (item.Contains("d"))
+                {
+                    key = "Day";
+                    value = currentDate.Day.ToString();
+                }
+                else if (item.Contains("y"))
+                {
+                    key = "Year";
+                    value = currentDate.Year.ToString();
+                }
+                dateParts.Add(key, value);
+            });
+            return dateParts;
+        }
+
         #endregion // Methods
     }
 }