From 8e22d5cf2c300b339226d53412025f9f37cc008a Mon Sep 17 00:00:00 2001
From: brianlagunas_cp <XceedBoucherS@users.noreply.github.com>
Date: Mon, 16 May 2011 14:53:38 +0000
Subject: [PATCH] DateTimePicker: fixed issue with custom format and binding
 the same dateTime to multiple DateTime controls.

---
 .../DateTimeUpDown/Implementation/DateTimeUpDown.cs          | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Implementation/DateTimeUpDown.cs b/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Implementation/DateTimeUpDown.cs
index a2064153..7b366bc0 100644
--- a/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Implementation/DateTimeUpDown.cs
+++ b/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Implementation/DateTimeUpDown.cs
@@ -55,7 +55,10 @@ namespace Microsoft.Windows.Controls
         {
             _dateTimeParser.Format = GetFormatString(newValue);
             InitializeDateTimeInfoListAndParseValue();
-            Text = ConvertValueToText();
+
+            //I forgot why I set the text here. I believe it had to deal with databinding to the format. Either way we need to make sure there is a value before we try to set the text.
+            if (Value.HasValue)
+                Text = ConvertValueToText();
         }
 
         #endregion //Format