Fix unbox cast from DateTime

Author: programcsharp

Build/CommonAssemblyInfo.cs

@@ -15,5 +15,5 @@
 //
 // You can specify all the values or you can default the Revision and Build Numbers
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.0.57.0")]
-[assembly: AssemblyFileVersion("1.0.57.0")]
+[assembly: AssemblyVersion("1.0.58.0")]
+[assembly: AssemblyFileVersion("1.0.58.0")]

Griddly.Mvc/GriddlyColumn.cs

@@ -135,7 +135,8 @@ public override object RenderCellValue(object row, bool stripHtml = false)
             else if (value is Enum)
                 value = Extensions.ToStringDescription((Enum)value);
             else if (value != null && value.GetType().HasCastOperator<DateTime>())
-                value = (DateTime)value;
+                // value = (DateTime)value; -- BAD: can't unbox a value type as a different type
+                value = Convert.ChangeType(value, typeof(DateTime));
 
             if (stripHtml && value is string)
                 value = HttpUtility.HtmlDecode(_htmlMatch.Replace(value.ToString(), "").Trim().Replace("  ", " "));

Griddly.Mvc/GriddlyExtensions.cs

@@ -153,7 +153,9 @@ public static string Current(this UrlHelper helper, object routeValues = null, b
                     if (t.IsPrimitive || t.IsEnum || t == typeof(Decimal) || t == typeof(String) || t == typeof(DateTime) || t == typeof(TimeSpan) || t == typeof(DateTimeOffset))
                         values[value.Key] = value.Value;
                     else if (t.HasCastOperator<DateTime>())
-                        values[value.Key] = (DateTime)value.Value;
+                        // values[value.Key] = (DateTime)value.Value; -- BAD: can't unbox a value type as a different type
+                        values[value.Key] = Convert.ChangeType(value.Value, typeof(DateTime));
+
                 }
             }
 
@@ -174,7 +176,8 @@ public static string Current(this UrlHelper helper, object routeValues = null, b
                         if (t.IsPrimitive || t.IsEnum || t == typeof(Decimal) || t == typeof(String) || t == typeof(DateTime) || t == typeof(TimeSpan) || t == typeof(DateTimeOffset))
                             values[value.Key] = value.Value;
                         else if (t.HasCastOperator<DateTime>())
-                            values[value.Key] = (DateTime)value.Value;
+                            // values[value.Key] = (DateTime)value.Value; -- BAD: can't unbox a value type as a different type
+                            values[value.Key] = Convert.ChangeType(value.Value, typeof(DateTime));
                     }
                 }
             }