SetRequired
指定当前表单是否为必填项。
语法
expression.SetRequired(bRequired);
expression - 表示 ApiPictureForm 类的变量。
参数
| 名称 | 必需/可选 | 数据类型 | 默认值 | 描述 |
|---|---|---|---|---|
| bRequired | 必需 | boolean | 定义当前表单是否为必填项（true）或非必填项（false）。 |
返回值
boolean
示例
在文档中将图片字段标记为必填，必须填写后才能提交文档。
// How do I make filling in a picture field obligatory in a document?
// Enforce that a picture field must be completed before the form is finished in a document.
let doc = Api.GetDocument();
let pictureForm = Api.CreatePictureForm({"key": "Personal information", "tip": "Upload your photo", "placeholder": "Photo", "scaleFlag": "tooBig", "lockAspectRatio": true, "respectBorders": false, "shiftX": 50, "shiftY": 50});
pictureForm.SetImage("https://static.onlyoffice.com/assets/docs/samples/img/onlyoffice_logo.png", Api.MillimetersToEmus(70), Api.MillimetersToEmus(80));
let paragraph = doc.GetElement(0);
paragraph.AddElement(pictureForm);
pictureForm.SetRequired(true);
let required = pictureForm.IsRequired();
paragraph = Api.CreateParagraph();
paragraph.AddText("The first form from this document is required: " + required);
doc.Push(paragraph);