使用itextsharp检查PDF复选框 [英] Checking off pdf checkbox with itextsharp
本文介绍了使用itextsharp检查PDF复选框的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我尝试过这么多不同的方法,但我不能得到复选框进行检查!这是我试过的:
I've tried so many different ways, but I can't get the check box to be checked! Here's what I've tried:
var reader = new iTextSharp.text.pdf.PdfReader(originalFormLocation);
using (var stamper = new iTextSharp.text.pdf.PdfStamper(reader,ms)) {
var formFields = stamper.AcroFields;
formFields.SetField("IsNo", "1");
formFields.SetField("IsNo", "true");
formFields.SetField("IsNo", "On");
}
它们都不工作。任何想法?
None of them work. Any ideas?
推荐答案
你不应该猜可能的值。您需要使用存储在PDF中的值。请尝试 CheckBoxValues 示例查找这些可能的值:
You shouldn't "guess" for the possible values. You need to use a value that is stored in the PDF. Try the CheckBoxValues example to find these possible values:
public String getCheckboxValue(String src, String name) throws IOException {
PdfReader reader = new PdfReader(SRC);
AcroFields fields = reader.getAcroFields();
// CP_1 is the name of a check box field
String[] values = fields.getAppearanceStates("IsNo");
StringBuffer sb = new StringBuffer();
for (String value : values) {
sb.append(value);
sb.append('\n');
}
return sb.toString();
}
或者使用 RUPS 。转到窗口小部件注释并查找正常( / N
)外观( AP
)状态。在我的例子中,他们是 / Off
和 /是
:
Or take a look at the PDF using RUPS. Go to the widget annotation and look for the normal (/N
) appearance (AP
) states. In my example they are /Off
and /Yes
:
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