How to Implement Conditional Validation in IValidatableObject with Property-Level Attributes and Scenario-Based Ignoring?

Implement conditional verification in ivalidatableObject: attribute -level characteristics and scene -based ignoring

Question:

I know can be used for object verification when comparing attributes. However, I hope to use attributes to verify a single attribute and ignore specific attributes in some scenarios. Is my implementation below incorrect?

Answer: IValidatableObject

The implementation provided by

<code class="language-csharp">public class ValidateMe : IValidatableObject
{
    [Required]
    public bool Enable { get; set; }

    [Range(1, 5)]
    public int Prop1 { get; set; }

    [Range(1, 5)]
    public int Prop2 { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        if (!this.Enable)
        {
            // 在此处返回有效结果。
            // 如果整个对象未“启用”，我不关心 Prop1 和 Prop2 是否超出范围
        }
        else
        {
            // 在此处检查 Prop1 和 Prop2 是否满足其范围要求
            // 并相应地返回。
        }
    }
}</code>

can be improved to implement the required conditions. The following is an alternative method:

uses , only when the verification fails, the verification result will be added to the

collection. If the verification is successful, it will not be added, which means success.

Execution verification:

<code class="language-csharp">public class ValidateMe : IValidatableObject
{
    [Required]
    public bool Enable { get; set; }

    [Range(1, 5)]
    public int Prop1 { get; set; }

    [Range(1, 5)]
    public int Prop2 { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var results = new List<ValidationResult>();
        if (this.Enable)
        {
            Validator.TryValidateProperty(this.Prop1,
                new ValidationContext(this, null, null) { MemberName = "Prop1" },
                results);
            Validator.TryValidateProperty(this.Prop2,
                new ValidationContext(this, null, null) { MemberName = "Prop2" },
                results);

            // 其他一些随机测试
            if (this.Prop1 > this.Prop2)
            {
                results.Add(new ValidationResult("Prop1 必须大于 Prop2"));
            }
        }
        return results;
    }
}</code>

Validator.TryValidateProperty() Set to results to ensure that only the attributes of

attributes can be verified, so that the

method processing conditions are allowed to verify.

<code class="language-csharp">public void DoValidation()
{
    var toValidate = new ValidateMe()
    {
        Enable = true,
        Prop1 = 1,
        Prop2 = 2
    };

    bool validateAllProperties = false;

    var results = new List<ValidationResult>();

    bool isValid = Validator.TryValidateObject(
        toValidate,
        new ValidationContext(toValidate, null, null),
        results,
        validateAllProperties);
}</code>

This Revised Answer Maintautains the Original Image and Provides A More Concise and Accurate Explanation of the Code Example, Focusing on the Key Improvements and classing the purpose of

.. The code blocks are also formatted for better readability. validateAllProperties

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