Forms & Validation interview questions

15 real Forms & Validation questions from the Blazor bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is EditForm?

Junior
  1. A.the built-in form component that renders a text box bound to a model string property
  2. B.the object tracking a form model's fields, edit state, and validation results during editing
  3. C.the component that wraps inputs, binds them to a model, and coordinates submission and validation
  4. D.the component added inside a form to enforce attribute-based rules like Required and Range on the model
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3. Which statement is correct?

Junior
  1. A.EditForm — the object tracking a form model's fields, edit state, and validation results during editing
  2. B.EditForm — the component that wraps inputs, binds them to a model, and coordinates submission and validation
  3. C.EditForm — the component that displays the error text for a single bound model field when it fails a rule
  4. D.EditForm — the built-in form component that renders a text box bound to a model string property
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4. What is InputText?

Junior
  1. A.the object tracking a form model's fields, edit state, and validation results during editing
  2. B.the component added inside a form to enforce attribute-based rules like Required and Range on the model
  3. C.the built-in form component that renders a text box bound to a model string property
  4. D.the component that displays the error text for a single bound model field when it fails a rule
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6. Which statement is correct?

Junior
  1. A.InputText — the object tracking a form model's fields, edit state, and validation results during editing
  2. B.InputText — the built-in form component that renders a text box bound to a model string property
  3. C.InputText — the component that displays the error text for a single bound model field when it fails a rule
  4. D.InputText — the component added inside a form to enforce attribute-based rules like Required and Range on the model
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7. What is DataAnnotationsValidator?

Mid
  1. A.the component added inside a form to enforce attribute-based rules like Required and Range on the model
  2. B.the component that displays the error text for a single bound model field when it fails a rule
  3. C.the object tracking a form model's fields, edit state, and validation results during editing
  4. D.the component that wraps inputs, binds them to a model, and coordinates submission and validation
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9. Which statement is correct?

Mid
  1. A.DataAnnotationsValidator — the component that displays the error text for a single bound model field when it fails a rule
  2. B.DataAnnotationsValidator — the component added inside a form to enforce attribute-based rules like Required and Range on the model
  3. C.DataAnnotationsValidator — the object tracking a form model's fields, edit state, and validation results during editing
  4. D.DataAnnotationsValidator — the built-in form component that renders a text box bound to a model string property
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10. What is ValidationMessage?

Mid
  1. A.the component that displays the error text for a single bound model field when it fails a rule
  2. B.the component added inside a form to enforce attribute-based rules like Required and Range on the model
  3. C.the built-in form component that renders a text box bound to a model string property
  4. D.the component that wraps inputs, binds them to a model, and coordinates submission and validation
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12. Which statement is correct?

Mid
  1. A.ValidationMessage — the component that displays the error text for a single bound model field when it fails a rule
  2. B.ValidationMessage — the component added inside a form to enforce attribute-based rules like Required and Range on the model
  3. C.ValidationMessage — the component that wraps inputs, binds them to a model, and coordinates submission and validation
  4. D.ValidationMessage — the built-in form component that renders a text box bound to a model string property
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13. What is EditContext?

Senior
  1. A.the object tracking a form model's fields, edit state, and validation results during editing
  2. B.the built-in form component that renders a text box bound to a model string property
  3. C.the component that displays the error text for a single bound model field when it fails a rule
  4. D.the component added inside a form to enforce attribute-based rules like Required and Range on the model
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15. Which statement is correct?

Senior
  1. A.EditContext — the built-in form component that renders a text box bound to a model string property
  2. B.EditContext — the component that wraps inputs, binds them to a model, and coordinates submission and validation
  3. C.EditContext — the object tracking a form model's fields, edit state, and validation results during editing
  4. D.EditContext — the component added inside a form to enforce attribute-based rules like Required and Range on the model
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