datamatrix.net c# example

vb.net data matrix code

datamatrix.net documentation

vb.net barcode freeware, print barcode labels vb.net, authorize.net error code 128, vb.net code 128 barcode, windows cannot load the device driver for this hardware code 39 network adapter, code 39 nvidia nforce networking controller, vb net datamatrix 2d barcode, vb.net data matrix code, ean 128 vb.net, vb.net ean-13 barcode, .net pdf 417, qr code dll vb net, netarea upc

asp.net pdf viewer annotation, hiqpdf azure, asp.net core web api return pdf, generate pdf in mvc using itextsharp, print mvc view to pdf, how to read pdf file in asp.net using c#, asp.net mvc display pdf, how to write pdf file in asp.net c#

End Sub Public Shared Function GenerateKey(ByVal targetFile As String) As String End Function Private Shared Sub ReadKey(ByVal algorithm As RSACryptoServiceProvider, ByVal keyFile As String) End Sub Public Shared Function EncryptData(ByVal data As String, ByVal publicKey As String) As Byte() End Function Public Shared Function DecryptData(ByVal data As Byte(), ByVal keyFile As String) As String End Function End Class The GenerateKey method creates an instance of the RSA algorithm for generating the key. It stores only the private key in the file secured through the DPAPI and returns the public key representation as a string. Public Shared Function GenerateKey(ByVal targetFile As String) As String Dim Algorithm As New RSACryptoServiceProvider() ' Save the private key Dim CompleteKey As String = Algorithm.ToXmlString(True) Dim KeyBytes As Byte() = Encoding.UTF8.GetBytes(CompleteKey) KeyBytes = ProtectedData.Protect(KeyBytes, Nothing, DataProtectionScope.LocalMachine) Using fs As New FileStream(keyFile, FileMode.Open) fs.Write(KeyBytes, 0, KeyBytes.Length) End Using ' Return the public key Return Algorithm.ToXmlString(False) End Function The caller of the function needs to store the public key somewhere; this is necessary for encrypting information. You can retrieve the key as an XML representation through a method called ToXmlString(). The parameter specifies whether private key information is included (True) or not (False). Therefore, the GenerateKey function first calls the function with the True parameter to store the complete key information in the file and then calls it with the False parameter to include the public key only. Subsequently, the ReadKey() method just reads the key from the file and then initializes the passed algorithm instance through FromXmlString(), the opposite of the ToXmlString() method:

Remember, all Profile providers assume the user has already been authenticated. If you re using the same table to store user authentication information and profile information, an unauthenticated user must have a record in this table. However, this isn t the case if you use separate tables or Windows authentication.

asp.net pdf editor, ssrs code 39, java qr code scanner library, crystal reports qr code generator, c# qr code generator open source, c# generate upc barcode

get {return productID;} } private string productName; public string ProductName { get {return productName;} } private decimal unitPrice; public decimal UnitPrice { get {return unitPrice;} } private int units; public int Units { get {return units;} set {units = value;} } public decimal Total { get {return Units * UnitPrice;} } public ShoppingCartItem(int productID, string productName, decimal unitPrice, int units) { this.productID = productID; this.productName = productName; this.unitPrice = unitPrice; this.units = units; } } You ll notice a few interesting details about this class. First, its properties are almost all readonly. None of the shopping cart item information can be changed once the item is created, with the exception of the number of desired units. The second interesting detail is the Total property. This property doesn t map to a private member variable instead it s calculated based on the unit price and the number of desired units. It s the class equivalent of a calculated column. This property is a great help when you bind a ShoppingCartItem to a control, because it allows you to easily show the total price of each line.

Private Shared Sub ReadKey(ByVal algorithm As RSACryptoServiceProvider, ByVal keyFile As String) Dim KeyBytes As Byte() Using fs As New FileStream(keyFile, FileMode.Open) KeyBytes = New Byte(fs.Length - 1) {} fs.Read(KeyBytes, 0, CInt(fs.Length)) End Using KeyBytes = ProtectedData.Unprotect(KeyBytes, Nothing, DataProtectionScope.LocalMachine) algorithm.FromXmlString(Encoding.UTF8.GetString(KeyBytes)) End Sub This time the ReadKey method is used by the decryption function only. The EncryptData() function requires the caller to pass in the XML string representation of the public key returned by the GenerateKey method, because the private key is not required for encryption. Encryption and decryption with RSA takes place as follows: Public Shared Function EncryptData(ByVal data As String, ByVal publicKey As String) As Byte() ' Create the algorithm based on the public key Dim Algorithm As New RSACryptoServiceProvider() Algorithm.FromXmlString(publicKey) ' Now encrypt the data Return Algorithm.Encrypt(Encoding.UTF8.GetBytes(data), True) End Function Public Shared Function DecryptData(ByVal data As Byte(), ByVal keyFile As String) As String Dim Algorithm As New RSACryptoServiceProvider() ReadKey(Algorithm, keyFile) Dim ClearData As Byte() = Algorithm.Decrypt(data, True) Return Convert.ToString(Encoding.UTF8.GetString(ClearData)) End Function Now you can build a test page, as shown in Figure 25-7. (You can find the source code of this page in the book s downloads at www.apress.com.)

Here s the complete code for the Users_Update stored procedure: CREATE PROCEDURE [Users_Update] (@UserName [varchar](50), @AddressName [varchar](50), @AddressStreet [varchar](50), @AddressCity [varchar](50), @AddressState [varchar](50), @AddressZipCode [varchar](50),

birt upc-a, birt data matrix, asp.net core qr code reader, uwp barcode scanner c#