将表单控件导出为表单域

// Initialize Workbook.
var workbook = new Workbook();

// Create worksheet.
IWorksheet ws = workbook.Worksheets["Sheet1"];
            
// Add three checkboxes.
var checkBox1 = ws.Controls.AddCheckBox(62.4, 16.8, 69, 19.2);
checkBox1.Value = false;

var checkBox2 = ws.Controls.AddCheckBox(62.4, 36.6, 69, 19.2);
checkBox2.Value = true;

var checkBox3 = ws.Controls.AddCheckBox(62.4, 57, 69, 19.2);
checkBox3.Value = false;

// Add dropdown.
var dropDown = ws.Controls.AddDropDown(28.8, 81.8, 103.8, 31.4);
dropDown.PrintObject = true;
dropDown.Items.Add(new DropDownItem("Item 1"));
dropDown.Items.Add(new DropDownItem("Item 2"));
dropDown.Items.Add(new DropDownItem("Item 3"));
dropDown.SelectedIndex = 0;

// Add listbox.
var lstBox1 = ws.Controls.AddListBox(51.6, 134.2, 135, 99.6);
for (int i = 0; i < 6; i++)
{
    lstBox1.Items.Add(new ListBoxItem("Item " + (i + 1)));
}
lstBox1.SelectedIndex = 2;

// Add option button groups.
ws.Controls.AddGroupBox(234.2, 8.4, 222.6, 138.6);
ws.Controls.AddOptionButton(261.2, 29.4, 71.4, 16.8);
ws.Controls.AddOptionButton(267.8, 70.8, 71.4, 16.8);
ws.Controls.AddOptionButton(275.6, 111.6, 71.4, 16.8);

ws.Controls.AddGroupBox(244.4, 187.6, 176.4, 143.4);
ws.Controls.AddOptionButton(274.4, 216.6, 71.4, 16.8);
ws.Controls.AddOptionButton(279.8, 255, 71.4, 16.8);
ws.Controls.AddOptionButton(286.4, 295.2, 71.4, 16.8);

// Set FormFields to true to export Excel form controls as PDF form fields.
var options = new PdfSaveOptions { FormFields = true };

// Save the PDF document.
workbook.Save("PdfFormFieldExample.pdf", options);

// Initialize Workbook.
Workbook workbook = new Workbook();
IWorksheet worksheet = workbook.Worksheets[0];
// Add a button control to worksheet and set its PrintObject property
var btn = worksheet.Controls.AddButton(360 * ColScale, 91.8, 103.94 * WidthScale, 19.79);
btn.Text = "Test settings";
btn.PrintObject = true;

// Save to a pdf file
workbook.Save("FormControlPdf.pdf");