Lesson 4: Adding the ErrorMessage Property to the [Required] Attribute

Contains Methods in the C# String Class

Search Methods in the C# String Class

Override ToString() in Your C# Classes

Use the StringBuilder Class for Efficient String Manipulation in C#

C# String Handling Series

Using ToLower() and ToUpper() in C#

Using Split() and Join() in C#

Convert Strings to Title Case Using ToTitleCase() in C#

Best Methods to Check for Empty Strings in C#

Lesson 5: Declaring and Working with Variables in C#

Lesson 12: Create Custom Validations by Inheriting from the ValidationAttribute Class

Lesson 13: Create a Custom [Compare] Validation Class in C#

Lesson 11: Build Your Own Validation Using the [CustomValidation] Attribute

Lesson 10: Compare Two Property Values Using the [Compare] Attribute

Lesson 9: [EmailAddress], [Phone], [Url], and [CreditCard] Annotations

Lesson 7: Using the [Range] Attribute with Numeric and Date Data

Lesson 8: Check Data Using the [RegularExpression] Annotation

Lesson 5: How the [Display] Attribute Changes the Error Message

Lesson 6: The [MaxLength], [MinLength], and [StringLength] Attributes

Lesson 4: Adding the ErrorMessage Property to the [Required] Attribute

Lesson 3: Validating Data Annotations Programmatically in C#

Lesson 2: Overview of .NET Data Annotations and a Sample of Using Them in C#

Lesson 1: Course Overview for Use Data Annotations in any C# Application

Lesson 7: Create a CRUD Web Page Using the Fetch API