问C#程序中使用的SQL语句不会识别数据库"System.Data.SqlClient.SqlException (0x80131904)：显示无效的对象名‘CDA’“。

EN

 static void InsertSql(Guid folderGuid, string folderName)
        {
            try
            {
                // Build connection string
                SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder
                {
                    DataSource = "WIN10-LAP-HJP",
                    UserID = "sa",
                    Password = "Mypassword123",
                    InitialCatalog = "master"
                };

                // Connect to SQL
                Console.Write("Connecting to SQL Server ... ");
                using (SqlConnection connection = new SqlConnection(builder.ConnectionString))
                {

                    Console.WriteLine("Done.");
                    string query = "INSERT INTO CDA ( FolderName) VALUES (@FolderName )";

                    using (SqlCommand command = new SqlCommand(query, connection))
                    {
                        command.Parameters.Add("@FolderID", SqlDbType.UniqueIdentifier).Value = folderGuid;
                        command.Parameters.Add("@FolderName", SqlDbType.NVarChar ).Value = folderName;



                        connection.Open();
                        var result = command.ExecuteNonQuery();

                        // Check Error
                        if (result < 0)
                            Console.WriteLine("Error inserting data into Database!");
                    }
                }
            }

            catch (SqlException e)
            {
                Console.WriteLine(e.ToString());
            }
        }

connecting to sql server...Done