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Validates whether the specified value does not exist in the given Candidates list.
protected override bool Validate(ValidateActionContext context)
Protected Overrides Function Validate(context As ValidateActionContext) As Boolean
| Type | Name | Description |
|---|---|---|
| ValidateActionContext | context | A ValidateActionContext value that indicates which value should be validated, and contains relative context information. |
| Type | Description |
|---|---|
| bool | true if the specifed value does not exist in the given candidate string list; otherwise,false. |
If the cell's value is null, and Candidates also includes a null value, the validation fails.