}//END LogAction method
// =====================================================================================
/// <summary>
/// This method adds EvApplicationEvent data object in the database.
/// </summary>
/// <param name="Category">String: Event Category</param>
/// <param name="Description">String: Description</param>
/// <param name="EventId">EvEventCodes: Object Evado.Model.EvEventCodes </param>
/// <param name="Url">String: Page Url</param>
/// <param name="UserName">String: Username of a person </param>
/// <returns> A boolean value </returns>
///<remarks>
/// This method consists of following steps.
///
/// 1. Initialise a string Error to the Category if Category is empty.
///
/// 2. Write to the event log.
///
/// 3. Return a boolean value.
///
/// </remarks>
// -------------------------------------------------------------------------------------
public static bool LogError(
Evado.Model.EvEventCodes EventId, string Category, string Description, string Url, string UserName)
{
//
// Initialise a string Error to the Category if Category is empty.
//
if (Category == String.Empty)
{
Category = "Error";
}
string sEventContent = "EventId: " + EventId.ToString( )
+ "\r\nEvent Category: " + Category
+ "\r\nPageUrl: " + Url
+ "\r\nUserId: " + UserName
+ "\r\n\r\nDescription:\r\n" + Description;
//
// Write to the event log
//
WriteLog(sEventContent, EventLogEntryType.Error);
//
// Return a boolean value
//
return(true);
}//END LogError method
}//END encryptString method
// =================================================================================
/// <summary>
/// This method decrypts a string of encrypted text.
///
/// </summary>
/// <param name="EncryptedString"></param>
/// <returns>Unencrypted string</returns>
// ---------------------------------------------------------------------------------
public string decryptString(String EncryptedString)
{
this.LogMethod("decryptString method. ");
//
// Define the reader and writer.
//
string clearText = String.Empty;
TripleDESCryptoServiceProvider tripleDes = new TripleDESCryptoServiceProvider( );
//
// If the key is empty return empty string.
//
if (this._Key [0] == 0)
{
return(String.Empty);
}
try
{
//
// Convert the string to a byte array.
//
byte [] buffer = Convert.FromBase64String(EncryptedString);
//
// Set the encryption keys.
//
tripleDes.Key = this._Key;
tripleDes.IV = this._IV;
//
// Encrypt the clear data.
//
ICryptoTransform ITransform = tripleDes.CreateDecryptor( );
clearText = Encoding.Unicode.GetString(ITransform.TransformFinalBlock(buffer, 0, buffer.Length));
this.LogMethodEnd("decryptString");
//
// Return the clear data.
//
return(clearText);
}
catch (CryptographicException Ex)
{
this.LogException(Ex);
this._eventId = Evado.Model.EvEventCodes.Encryption_Decryption_Bad_Data_Error;
throw;
}
}//END decryptString method
//====================================================================================
/// <summary>
/// Default constructor and initlaise the object.
/// </summary>
/// <param name="Type">EventType enumerated value</param>
/// <param name="EventId">EvEventCodes enumerated value</param>
/// <param name="Category">String: the category of the event</param>
/// <param name="Description">String: the description of the event.</param>
/// <param name="UserId">String: name of the user that created the event.</param>
// ----------------------------------------------------------------------------------
public EvApplicationEvent(
EventType Type,
Evado.Model.EvEventCodes EventId,
String Category,
String Description,
String UserId)
{
this.EventId = (int)EventId;
this.Type = Type;
this.Category = Category;
this.Description = Description;
this.UserId = UserId;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#endregion
#region Add Evado.Model.EvEventCodes methods
// =====================================================================================
/// <summary>
/// This method adds EvApplicationEvent data object in the database.
/// </summary>
/// <param name="Category">String: Event category</param>
/// <param name="Description">String: Description</param>
/// <param name="EventId">EvEventCodes: Object Evado.Model.EvEventCodes </param>
/// <param name="UserName">String: UserName of a person</param>
/// <returns>A boolean value</returns>
/// <remarks>
/// This method consists of following steps.
///
/// 1. Write to the event log.
///
/// 2. Return a boolean value.
///
/// </remarks>
// -------------------------------------------------------------------------------------
public static bool LogInformation(
string Description, Evado.Model.EvEventCodes EventId, string Category, string UserName)
{
//
// Create the event comment content
//
string sEventContent = "EventId: " + EventId.ToString( )
+ "\r\nEvent Category: " + Category
+ "\r\nUserId: " + UserName
+ "\r\n\r\nDescription:\r\n" + Description;
//
// Write the event comment to the event log.
//
WriteLog(sEventContent, EventLogEntryType.Information);
//
// Return a boolean value
//
return(true);
} //END LogInformation method
}//END decryptString method
// =================================================================================
/// <summary>
/// This method decrypts a string of encrypted text.
///
/// </summary>
/// <param name="Guid_1">a Guid identifier used as part of the encryption key </param>
/// <param name="Guid_2">a Guid identifier used as part of the encryption key </param>
// ---------------------------------------------------------------------------------
private void encodeKeyFromGuid(Guid Guid_1, Guid Guid_2)
{
this.LogMethod("encodeKeyFromGuid method. ");
this.LogDebug("Guid_1: " + Guid_1 + ", Guid_2: " + Guid_2);
//
// Initialise the method variables and objects.
//
this._eventId = Evado.Model.EvEventCodes.Ok;
byte [] byteGuid_1 = Guid_1.ToByteArray( );
byte [] byteGuid_2 = Guid_2.ToByteArray( );
byte [] byteGuids = new byte [32];
for (int index = 0; index < 16; index++)
{
byteGuids [index] = byteGuid_1 [index];
byteGuids [(index + 16)] = byteGuid_2 [index];
}
this.LogDebug("byteGuids length: " + byteGuids.Length + " value: " + Convert.ToBase64String(byteGuids));
for (int index = 0; index < 24; index++)
{
this._Key [index] = byteGuids [index];
}
for (int index = 24; index < 32; index++)
{
this._IV [(index - 24)] = byteGuids [index];
}
this.LogDebug("Key length: " + this._Key.Length);
this.LogDebug("Key value: " + Convert.ToBase64String(this._Key));
this.LogDebug("IV length: " + this._IV.Length);
this.LogDebug("IV value: " + Convert.ToBase64String(this._IV));
this.LogMethodEnd("encodeKeyFromGuid");
}//END encodeKeyFromGuid method
