veryfying the digital sigunature using C#.net

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C#

ASP.NET

hi all


i had created the digital signature for Plain text using C#.net
i need to verify that signature is correct or not


i had a sample code to generate the digital signature

byte[] x_plaintext = Encoding.Default.GetBytes(TextBox7.Text);
       // create a hash code for the plaintext, using the SHA-1 algorithm
       byte[] x_hashcode = HashAlgorithm.Create("SHA1").ComputeHash(x_plaintext);
       // create an instance of the DSA implementation class
       DSACryptoServiceProvider x_dsa = new DSACryptoServiceProvider();

       // create the signature formatter
       DSASignatureFormatter x_formatter = new DSASignatureFormatter();
       // set the instance of the DSA algorithm that will sign the data
       x_formatter.SetKey(x_dsa);
       // set the name of the hashing algorithm we used to create the hash code
       x_formatter.SetHashAlgorithm("SHA1");
       // create the formatted DSA signature
       byte[] x_signature = x_formatter.CreateSignature(x_hashcode);
       TextBox8.Text = Convert.ToBase64String(x_signature);

then i need to verify so please try to replay me
Thanks alot