add number validation (#520)

* add number validation

* removed unnecessary codes

Author: ninggao

packages/dialog/templates/en-us/common.lg

@@ -24,9 +24,19 @@ Which value do you want for @{name(property)}?
 # askNumber(property)
 - IF: @{dialogClass.schema.properties[property].minimum && dialogClass.schema.properties[property].maximum}
 - Enter a number for @{name(property)} between @{dialogClass.schema.properties[property].minimum} and @{dialogClass.schema.properties[property].maximum}
+- ELSEIF:  @{dialogClass.schema.properties[property].minimum}
+- Enter a number for @{name(property)} that is greater than @{dialogClass.schema.properties[property].minimum}
+- ELSEIF: @{dialogClass.schema.properties[property].maximum}
+- Enter a number for @{name(property)} that is less than @{dialogClass.schema.properties[property].maximum}
 - ELSE:
 - Enter a number for @{name(property)}
 
+# numberValidation(property, number)
+- IF: @{less(number, dialogClass.schema.properties[property].minimum)}
+- @{number} is less than the minimum value @{dialogClass.schema.properties[property].minimum}.
+- ELSEIF: @{greater(number, dialogClass.schema.properties[property].maximum)}
+- @{number} is greater than the maximum value @{dialogClass.schema.properties[property].maximum}.
+
 # askString(property)
 - ```
 @{askHelp()}

packages/dialog/templates/numberSetnumber.dialog.lg

@@ -11,17 +11,33 @@
     "entity": "number",
     "actions": [
         {
-            "$kind": "Microsoft.SendActivity",
-            "activity": "@{callSetMessage()}"
-        },
-        {
-            "$kind": "Microsoft.SetProperty",
-            "property": "$@{property}",
-            "value": "=@number"          
+            "$kind": "Microsoft.IfCondition",
+            "condition":"or(less(@number, dialogClass.schema.properties['@{property}'].minimum), greater(@number, dialogClass.schema.properties['@{property}'].maximum))",
+            "actions":[
+                {
+                    "$kind": "Microsoft.SendActivity",
+                    "activity": "@{callNumberAlert()}"
+                }                    
+            ],
+            "elseActions":[
+                {
+                    "$kind": "Microsoft.SendActivity",
+                    "activity": "@{callSetMessage()}"
+                },
+                {
+                    "$kind": "Microsoft.SetProperty",
+                    "property": "$@{property}",
+                    "value": "=@number"          
+                }
+            ]
         }
+        
     ]               
 }
 ```
 
+# callNumberAlert
+- @\{numberValidation('@{property}', @number)}
+
 # callSetMessage
 - @\{setPropertyMessage('@{property}', @number)}