react select component not able to validate required property

[veenapan]

I have added required property for CFormSelect inside CForm but on submit button, form is not validating dropdown

<CFormSelect className="mb-2" aria-label="Small select example" onChange={handleAddFormChange} value={formData.selectedoption} required name="selectedoption"> <option>Select Option</option> <option value="W">W</option> <option value="DS">DS</option> <option value="ML">ML</option> <option value="B">B</option> </CFormSelect>