C#

Quote:

Certainly! In C#, if you want to peek at the last entry in a ConcurrentQueue, you can use the TryPeek method. Here’s an example:

Quote:

In this example, the TryPeek method allows you to examine the last item in the queue without removing it. If the queue is empty, it returns false, and you can handle that case accordingly.
If you have any more questions or need further assistance, feel free to ask! 😊

Quote:

Tries to return an object from the beginning of the ConcurrentQueue<t> without removing it.

I am attempting to update a sql table based off the tables ID (which is self generated by sql when the row was first entered into the table. The below code is what I am trying to use but it will not update the row.

protected void ButtonUpdate_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection("Data Source=ucpdapps2;Initial Catalog=Offline_CAD;Persist Security Info=True;User ID=sa;Password=Propaganda9800!");
        con.Open();
        SqlCommand cmd = new SqlCommand("Update [Law_Responses] SET (Calltaker=@Calltaker,Date=@Date,City=@City,County=@County,Address=@Address) where TextBox171.text=@ID", con);
        cmd.Parameters.AddWithValue("@Calltaker", DropDownList1.SelectedValue);
        cmd.Parameters.AddWithValue("@Date", TextBox1.Text);
        cmd.Parameters.AddWithValue("@City", DropDownList9.SelectedValue);
        cmd.Parameters.AddWithValue("@County", DropDownList2.SelectedValue);
        cmd.Parameters.AddWithValue("@Address", TextBox3.Text);
        con.Close();
        cmd.ExecuteNonQuery();
        ScriptManager.RegisterStartupScript(this, this.GetType(), "script", "alert('Incident Was Updated');", true);
    }

var password = "thisIsAReallllllllyLongPasswordForTesting";
var passPhrase = "E546C8DF278CD5931069B522E695D4F2";
var initVector = "HR$2pIjHR$2pIj12";
var encrypted = Cryptography.EncryptString(password, passPhrase, initVector);

Console.WriteLine("Encrypted password");
Console.WriteLine(encrypted.ToString());

string decrypted = Cryptography.DecryptString(encrypted, passPhrase, initVector);

Console.WriteLine("decrypted password");
Console.WriteLine(decrypted);

public static class Cryptography
{
    public static string EncryptString(string plainText, string passPhrase, string initVector)
    {
        string encrypted = "";

        // Create an Aes object with the specified key and IV.
        using (Aes aes = Aes.Create())
        {
            aes.Key = Encoding.ASCII.GetBytes(passPhrase);
            aes.IV = Encoding.ASCII.GetBytes(initVector);

            // Create a new MemoryStream object to contain the encrypted bytes.
            using (var memoryStream = new MemoryStream())
            {
                // Create a CryptoStream object to perform the encryption.
                using (var cryptoStream = new CryptoStream(memoryStream, aes.CreateEncryptor(), CryptoStreamMode.Write))
                {
                    // Encrypt the plaintext.
                    using (var streamWriter = new StreamWriter(cryptoStream))
                    {
                        streamWriter.Write(plainText);
                    }

                    encrypted = Encoding.UTF8.GetString(memoryStream.ToArray());
                }
            }
        }

        return encrypted;
    }

    public static string DecryptString(string encryptedText, string passPhrase, string initVector)
    {
        string decrypted;

        // Convert the input string to bytes
        var inputBytes = Encoding.ASCII.GetBytes(encryptedText);

        //PadToMultipleOf(ref inputBytes, 16);

        // Create an Aes object with the specified key and IV.
        using (Aes aes = Aes.Create())
        {
            aes.Key = Encoding.ASCII.GetBytes(passPhrase);
            aes.IV = Encoding.ASCII.GetBytes(initVector);

            // Create a new MemoryStream object to contain the decrypted bytes.
            using (var memoryStream = new MemoryStream(inputBytes))
            {
                // Create a CryptoStream object to perform the decryption.
                using (var cryptoStream = new CryptoStream(memoryStream, aes.CreateDecryptor(), CryptoStreamMode.Read))
                {
                    // Decrypt the ciphertext.
                    using (var streamReader = new StreamReader(cryptoStream))
                    {
                        decrypted = streamReader.ReadToEnd();
                    }
                }
            }
        }

        return decrypted;
    }

    private static void PadToMultipleOf(ref byte[] src, int pad)
    {
        int len = (src.Length + pad - 1) / pad * pad;
        Array.Resize(ref src, len);
    }
}

The input data is not a complete block.'

PadToMultipleOf(ref inputBytes, 16);

Padding is invalid and cannot be removed.'