Annotate Required Field Title For Free

Framework Validates all the fields of the model using ModelState object. In code we need to check the IsValid property of the ModelState object. If there is a validation error in any of the input fields then the IsValid property is set to false. If all the fields are satisfied then the IsValid property is set to true.

MVC Data Annotations for Model ValidationDataType. Specify the datatype of a property.DisplayName. specify the display name for a property.DisplayFormat. specify the display format for a property like different format for Date proerty.Required.ReqularExpression.Range.StringLength.MaxLength.More items...?Jul 27, 2012

System. ComponentModel. DataAnnotations includes the following attributes that impacts the nullability or size of the column.

Data annotations (available as part of the System. ComponentModel. DataAnnotations namespace) are attributes that can be applied to classes or class members to specify the relationship between classes, describe how the data is to be displayed in the UI, and specify validation rules.

Data Annotations - Table Attribute in EF 6 & EF Core. The Table attribute can be applied to a class to configure the corresponding table name in the database. It overrides the default convention in EF 6 and EF Core.

Data Annotations attributes are . NET attributes which can be applied on an entity class or properties to override default conventions in EF 6 and EF Core.These attributes are not only used in Entity Framework but they can also be used with ASP.NET MVC or data controls.

Column Attribute The same as the table attribute, this attribute specifies the name of the column and the data type of the column. This means that this attribute is very useful when the entity's property name and the table's column name are different.

Data Annotations - Table Attribute in EF 6 & EF Core. The Table attribute can be applied to a class to configure the corresponding table name in the database. It overrides the default convention in EF 6 and EF Core.

The Required attribute indicates that a property must have a value; in this sample, a movie has to have values for the Title , ReleaseDate , Genre , and Price properties in order to be valid. The Range attribute constrains a value to within a specified range.

Arguments. Instance The instance of class to validate. ValidationContext The context that describes the object to validate. ValidationResults The collection of validation results descriptions.