## Attribute Examples

The option `-a max ` generte the next attribute based on the metadata:
```
 [MaxLength(26)]
 public string LastName {get;set;}
```


The option `-a key ` generte the next attribute based on the metadata:
```
 [Key]
 public string UserName {get;set;} //PrimaryKey not null
```

The option `-a req ` generte the next attribute based on the metadata:
```
[Required]
 public string LastName {get;set;}
```

The option `-a json` generte the next attribute based on the metadata:
```
 [JsonProperty(PropertyName = "UserName")]
 public string UserName {get;set;} //PrimaryKey not null        
```

The option `-a dm` generte the next attribute based on the metadata:
```
 [DataMember]
 public string UserName {get;set;} //PrimaryKey not null
```

The option `-a proto` generte the next attribute based on the metadata:
```
[ProtoMember(1)]
public string UserName {get;set;} //PrimaryKey not null
```


The option `-a display` generte the next attribute based on the metadata:
```
[Display(Name = "User Name")]  
public string UserName {get;set;} //PrimaryKey not null       
```

The option `-a json3` generte the next json attribute of Text.Json of Necore3.x or Net5 based on the metadata:
```
 [JsonPropertyName("Location")]
public AirportLocation Location {get;set;}
```

**Note:**

 You can pass multiple attributes searated by space and get the corresponding attributes based on the metadata, e.g

```
-a key json max
```