fixes #4

Solution/TrangTestLib/DataAccess/TemperatureType.cs

@@ -15,7 +15,7 @@ public class TemperatureType
         public TemperatureType(string _indicator)
         {
 
-            Data.TrangTest.TemperatureTypesRow typeRow = Data.XMLOperations.ReadXML().TemperatureTypes.First(tt => tt.TempType_Indicator == _indicator);
+            Data.TrangTest.TemperatureTypesRow typeRow = Data.XMLOperations.ReadXML().TemperatureTypes.First(tt => tt.TempType_Indicator == _indicator.ToUpper());
             id = typeRow.TempType_ID;
             name = typeRow.TempType_Name;
             indicator = typeRow.TempType_Indicator;

Solution/TrangTestLib/Temperature.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using TrangTestLib.DataAccess;
 
 namespace TrangTestLib
@@ -7,18 +8,25 @@ public class Temperature
     {
         private TemperatureType tempType;
         private double tempValue;
+        private char[] validStringChars = { '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '.', 'c', 'C', 'k', 'K', 'f', 'F', ' ', '-', '+' };
+        private char[] validTempTypes = { 'c', 'C', 'k', 'K', 'f', 'F' };
 
         public TemperatureType TempType { get { return tempType; } }
         public double TempValue { get { return tempValue; } }
 
+        /// <summary>
+        /// string ctor
+        /// </summary>
+        /// <param name="_temp">the temperature to convert</param>
         public Temperature(string _temp)
         {
-            // split the string 
-            string[] values = _temp.Split(' ');
-            tempValue = Convert.ToDouble(values[0]);
-            tempType = new TemperatureType(values[1]);
+            ValidateInputString(_temp);
+            ConvertStringToTemperature(_temp);
         }
 
+        /// <summary>
+        /// basic ctor
+        /// </summary>
         public Temperature() { }
 
         /// <summary>
@@ -49,6 +57,83 @@ public string ConvertedTemperature(string _typeIndicator)
             }
         }
 
+        private bool ValidateInputString(string _temp)
+        {
+            //convert to character array
+            char[] stringChars = _temp.ToCharArray();
 
+            // look for the number of characters
+            foreach (char c in stringChars)
+            {
+                // check that the characters are valid
+                if (validStringChars.Contains(c))
+                {
+                    continue;
+                }
+                else
+                {
+                    throw new Exception("The entered value contains invalid characters.");
+                }
+            }
+            return true;
+        }
+        /// <summary>
+        /// this method uses the easy method of splitting the string via the space,
+        /// left side is the temperature value, right side is the temperature type
+        /// </summary>
+        /// <param name="_temp">string representation of a temperature</param>
+        private void ConvertStringWithSpaceToTemperature(string _temp)
+        {
+            // split the string 
+            string[] values = _temp.Split(' ');
+            tempValue = Convert.ToDouble(values[0]);
+            tempType = new TemperatureType(values[1]);
+        }
+
+        /// <summary>
+        /// this method takes a string representation of a temperature and figures out how to convert it to a valid temperature class object
+        /// </summary>
+        /// <param name="_temp">the string representation of a temperature</param>
+        private void ConvertStringToTemperature(string _temp)
+        {
+            if(_temp.Contains(" "))
+            {
+                ConvertStringWithSpaceToTemperature(_temp);
+            }
+            else
+            {
+                try
+                {
+                    // find the type of temperature
+                    tempType = FindTemperatureType(_temp);
+                    // remove the type from the string
+                    int indicatorIndex = _temp.ToUpper().IndexOf(tempType.Indicator);
+                    string inputValue = _temp.Remove(indicatorIndex, 1);
+                    // convert the remainder to the temperature value
+                    tempValue = Convert.ToDouble(inputValue);
+                }
+                catch(Exception x)
+                {
+                    throw x;
+                }
+            }
+        }
+
+        /// <summary>
+        /// this method finds the temperature type from the character in the input string.
+        /// </summary>
+        /// <param name="_temp">the input string</param>
+        /// <returns>a TemperatureType Object</returns>
+        private TemperatureType FindTemperatureType(string _temp)
+        {
+            foreach(char c in _temp)
+            {
+                if(validTempTypes.Contains(c))
+                {
+                    return new TemperatureType(c.ToString());
+                }
+            }
+            throw new Exception("No valid temperature type was found in the input string.");
+        }
     }
 }

Solution/TrangTestStub/Form1.cs

@@ -514,6 +514,5 @@ private void EnableInputs()
             txtTestTemps.Enabled = true;
         }
 
-
     }
 }