C#

shabya wrote:

1. first character is a letter : a-z, A-Z
2. other characters can be letters , numbers and _
3. a space can be used only once.

"^[a-zA-z][a-zA-z0-9_]*\s?[a-zA-Z0-9_]*$"

string PatternString = 
@"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}" +
@"\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\" +
@".)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";

class ClassToSerialize
   {
      //dictionary to be serialized
       private Dictionary<string,string> dict=new Dictionary<string,string>();
       //dictionary does not supported by serilization so work aroun is
       //to this is convert dictionary in array and add them as xmlarray to serilization................No other way out
       //we have to handle serializatrion and deserialization of dictionary

       [XmlArray("Name")]
       [XmlArrayItem("ItemName", Type = typeof(DictionaryEntry))]
       public DictionaryEntry[] _signalsNotToBeVerified
       {
           get
           {
               //Make an array of DictionaryEntries to return
               DictionaryEntry[] ret = new DictionaryEntry[this.dict.Count];
               int index = 0;
               DictionaryEntry de;
               //Iterate through Stuff to load items into the array.
               foreach (KeyValuePair<string,> dictEntries in this.dict)
               {
                   de = new DictionaryEntry();
                   de.Key = dict.Key;
                   de.Value = dict.Value;
                   ret[index] = de;
                   index++;
               }
               return ret;
           }
           set
           {
               this.dict.Clear();
               for (int index = 0; index < value.Length; index++)
               {
                   this.dict.Add((string)value[index].Key, (string)value[index].Value);
               }
           }
   }

    byte[] encrypted = new byte[130000];
encrypted =  rsaCSP.Encrypt(toEncrypt, false);

byte[] encrypted = rsaCSP.Encrypt(toEncrypt, false);

Bad Length

byte[] encrypted =  rsaCSP.Encrypt(toEncrypt, false);

musefan wrote:

just check if result is 0 for an error

string wrong = "xyz";
result = int.Parse(wrong); // an exception is thrown here

string wrong = "xyz";
int result = -1;
bool success = int.TryParse(wrong, out result); // success is false, while result will still be -1