Analyzing your prompt, please hold on...
An error occurred while retrieving the results. Please refresh the page and try again.
以下代码片段也适用于 Aspose.PDF.Drawing 库。
要获取 PDF 文档中所有字段的值,您需要遍历所有表单字段,然后使用 Value 属性获取值。从 Form 集合中获取每个字段,在名为 Field 的基本字段类型中访问其 Value 属性。
以下 C# 代码片段演示了如何获取 PDF 文档中所有字段的值。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetValuesFromFields()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "GetValuesFromAllFields.pdf"))
{
// Get values from all fields
foreach (Aspose.Pdf.Forms.Field formField in document.Form)
{
Console.WriteLine("Field Name : {0} ", formField.PartialName);
Console.WriteLine("Value : {0} ", formField.Value);
}
}
}
表单字段的 Value 属性允许您获取特定字段的值。要获取值,从 Document 对象的 Form 集合中获取表单字段。此 C# 示例选择一个 TextBoxField 并使用 Value 属性检索其值。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetValueFromField()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "GetValueFromField.pdf"))
{
// Get a field
if (document.Form["textbox1"] is Aspose.Pdf.Forms.TextBoxField textBoxField)
{
// Get field value
Console.WriteLine("PartialName : {0} ", textBoxField.PartialName);
Console.WriteLine("Value : {0} ", textBoxField.Value);
}
}
}
要获取提交按钮的 URL,请使用以下代码行。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetSubmitFormActionUrl()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "GetValueFromField.pdf"))
{
// Get the SubmitFormAction from the form field
if (document.Form[1].OnActivated is Aspose.Pdf.Annotations.SubmitFormAction act)
{
// Output the URL of the SubmitFormAction
Console.WriteLine(act.Url.Name);
}
}
}
有时,您可能知道文档中表单字段的位置,但不知道它的名称。例如,如果您只有打印表单的示意图。使用 Aspose.PDF for .NET,这不是问题。您可以找出 PDF 文件中给定区域的字段。要从 PDF 文件的特定区域获取表单字段:
以下 C# 代码片段演示了如何获取 PDF 文件中特定矩形区域的表单字段。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetFieldsFromRegion()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "GetFieldsFromRegion.pdf"))
{
// Create rectangle object to get fields in that area
var rectangle = new Aspose.Pdf.Rectangle(35, 30, 500, 500);
// Get the PDF form
var form = document.Form;
// Get fields in the rectangular area
var fields = form.GetFieldsInRect(rectangle);
// Display Field names and values
foreach (var field in fields)
{
// Display image placement properties for all placements
Console.Out.WriteLine("Field Name: " + field.FullName + "-" + "Field Value: " + field.Value);
}
}
}
Analyzing your prompt, please hold on...
An error occurred while retrieving the results. Please refresh the page and try again.