create a sql server service broker queue processor in csharp

-- 1. Create the database with Service Broker
CREATE DATABASE MyDatabase
GO
ALTER DATABASE MyDatabase SET ENABLE_BROKER
GO

-- 2. Define a new message type and contract
CREATE MESSAGE TYPE [MyMessageType] VALIDATION = NONE
GO
CREATE CONTRACT [MyContract] ([MyMessageType] SENT BY ANY)
GO

-- 3. Create a new queue and bind it to the message type and contract
CREATE QUEUE [MyQueue]
GO
ALTER QUEUE [MyQueue] WITH STATUS = ON
GO
CREATE SERVICE [MyService] ON QUEUE [MyQueue] ([MyContract])
GO

-- 4. Create a stored procedure to handle the received messages
CREATE PROCEDURE [MyStoredProcedure]
AS
BEGIN
    DECLARE @message_body XML
    WHILE (1 = 1)
    BEGIN
        BEGIN TRANSACTION
        WAITFOR (
            RECEIVE TOP(1) @message_body = message_body
            FROM [MyQueue]
        ), TIMEOUT 1000
        
        IF @@ROWCOUNT = 0
        BEGIN
            ROLLBACK TRANSACTION
            CONTINUE
        END
        
        -- Handle the received message here
        -- For example, insert the message into a table
        INSERT INTO [MyTable] (MessageBody) VALUES (@message_body)
        
        COMMIT TRANSACTION
    END
END
GO

-- 5. Create the C# application
using System;
using System.Data.SqlClient;
using System.Data;
using System.Threading;

class Program
{
    static void Main(string[] args)
    {
        // Connection string to the database with Service Broker enabled
        string connectionString = "Server=myServerAddress;Database=MyDatabase;Trusted_Connection=True;";
        
        using (var connection = new SqlConnection(connectionString))
        {
            connection.Open();
            
            // Create a new SQLCommand to receive messages from the queue
            using (var command = new SqlCommand("WAITFOR (RECEIVE TOP(1) message_body FROM [MyQueue]), TIMEOUT 1000", connection))
            {
                while (true)
                {
                    // Execute the command and get the received message
                    using (var reader = command.ExecuteReader())
                    {
                        if (!reader.HasRows)
                        {
                            // No message received, sleep for a while
                            Thread.Sleep(1000);
                            continue;
                        }
                        
                        reader.Read();
                        
                        // Get the message_body column value as an XML string
                        string messageBody = reader.GetString(0);
                        
                        // Process the message here
                        // For example, update a record in the database
                        
                        reader.Close();
                    }
                }
            }
        }
    }
}
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