What parameters does the stringlength attribute errormessage take in C#?

What parameters does the stringlength attribute errormessage take in C#?

The StringLength attribute in C# is used to specify the maximum and minimum length of a string property in a class. The ErrorMessage property of the StringLength attribute is used to specify a custom error message that is displayed when the length of the string property violates the specified range.

The ErrorMessage property can include placeholders for the following parameters:

  1. {0}: The name of the validated property.
  2. {1}: The minimum length allowed for the property.
  3. {2}: The maximum length allowed for the property.

Here's an example of how to use the StringLength attribute with a custom error message:

public class Person
{
    [StringLength(50, MinimumLength = 2, ErrorMessage = "{0} must be between {1} and {2} characters.")]
    public string Name { get; set; }
}

In this example, the Name property of the Person class is annotated with the StringLength attribute, which specifies that the maximum length of the property is 50 characters and the minimum length is 2 characters. The ErrorMessage property of the attribute includes placeholders for the name of the property, the minimum length, and the maximum length.

If the Name property is too short or too long, the custom error message is displayed with the actual values of the parameters substituted for the placeholders. For example, if the Name property is set to "A", the error message would be "Name must be between 2 and 50 characters.".

Examples

  1. Understanding ErrorMessage parameter in StringLength Attribute in C#

    • Description: Learn about the usage and significance of the ErrorMessage parameter in the StringLength attribute in C#.
    [StringLength(50, ErrorMessage = "The field must be a maximum of 50 characters.")]
public string MyProperty { get; set; }

  2. Stringlength attribute errormessage parameter example

    • Description: Explore an example demonstrating how to specify the ErrorMessage parameter in the StringLength attribute in C#.
    [StringLength(10, ErrorMessage = "The field must be a maximum of 10 characters.")]
public string MyProperty { get; set; }

  3. C# StringLength attribute ErrorMessage usage

    • Description: Understand how to utilize the ErrorMessage parameter within the StringLength attribute for validation messages in C#.
    [StringLength(20, ErrorMessage = "The field must be a maximum of 20 characters.")]
public string MyProperty { get; set; }

  4. How to set custom error message with StringLength attribute in C#

    • Description: Learn how to set a custom error message using the ErrorMessage parameter within the StringLength attribute in C#.
    [StringLength(15, ErrorMessage = "Custom error message for length validation.")]
public string MyProperty { get; set; }

  5. C# StringLength attribute ErrorMessage parameter syntax

    • Description: Explore the syntax for specifying the ErrorMessage parameter within the StringLength attribute in C#.
    [StringLength(25, ErrorMessage = "Custom error message.")]
public string MyProperty { get; set; }

  6. Custom validation message with StringLength attribute in C#

    • Description: Understand how to provide a custom validation message using the ErrorMessage parameter in the StringLength attribute in C#.
    [StringLength(30, ErrorMessage = "Custom error message for string length validation.")]
public string MyProperty { get; set; }

  7. StringLength attribute in C# with custom error message

    • Description: See an example of using the StringLength attribute with a custom error message specified using the ErrorMessage parameter in C#.
    [StringLength(40, ErrorMessage = "Custom error message for string length.")]
public string MyProperty { get; set; }

  8. Setting validation error message with StringLength attribute in C#

    • Description: Learn how to set a validation error message using the ErrorMessage parameter within the StringLength attribute in C#.
    [StringLength(35, ErrorMessage = "Custom error message for validation.")]
public string MyProperty { get; set; }

  9. C# StringLength attribute ErrorMessage parameter best practices

    • Description: Discover best practices for utilizing the ErrorMessage parameter within the StringLength attribute for validation messages in C#.
    [StringLength(45, ErrorMessage = "Best practice error message.")]
public string MyProperty { get; set; }

  10. String length validation error handling with StringLength attribute in C#

    • Description: Learn how to handle string length validation errors by specifying custom error messages using the ErrorMessage parameter in the StringLength attribute in C#.
    [StringLength(55, ErrorMessage = "Error: Invalid string length.")]
public string MyProperty { get; set; }

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