Parse data from documents Leave feedback
GroupDocs.Parser provides Document Parser feature that allows you to extract data from documents of various formats including PDF, Microsoft Word, Excel, LibreOffice formats etc. (see full supported list)).
With Document Parsing feature you can easily solve business automation tasks with the data extracted from your documents.
Using this feature is straightforward. Simply define a template programmatically and apply it.
GroupDocs.Parser provides Template object to define a template and ParseByTemplate method to apply the template to existing document.
DocumentData ParseByTemplate(Template template)
Here are the steps to parse data from the document by user-generated template:
- Instantiate Parser object for the existing document;
- Instantiate Template object with the user-generated template;
- Call ParseByTemplate method and obtain DocumentData object;
- Check if data isn’t null (indicates that Parse by Template feature is supported for the document);
- Iterate over field data to obtain the document data.
The following example shows how to parse data from the document by user-generated template :
// Create an instance of Parser class
using (Parser parser = new Parser(Constants.SampleInvoicePdf))
{
// Parse the document by the template
DocumentData data = parser.ParseByTemplate(GetTemplate());
// Check if parsing document by template is supported
if (data == null)
{
Console.WriteLine("Parsing Document by Template isn't supported.");
return;
}
// Print extracted fields
for (int i = 0; i < data.Count; i++)
{
Console.Write(data[i].Name + ": ");
PageTextArea area = data[i].PageArea as PageTextArea;
Console.WriteLine(area == null ? "Not a template field" : area.Text);
}
}
private static Template GetTemplate()
{
// Create detector parameters for "Details" table
TemplateTableParameters detailsTableParameters = new TemplateTableParameters(new Rectangle(new Point(35, 320), new Size(530, 55)), null);
// Create detector parameters for "Summary" table
TemplateTableParameters summaryTableParameters = new TemplateTableParameters(new Rectangle(new Point(330, 385), new Size(220, 65)), null);
// Create a collection of template items
TemplateItem[] templateItems = new TemplateItem[]
{
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 135), new Size(100, 10))), "FromCompany"),
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 150), new Size(100, 35))), "FromAddress"),
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 190), new Size(150, 2))), "FromEmail"),
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 250), new Size(100, 2))), "ToCompany"),
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 260), new Size(100, 15))), "ToAddress"),
new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 290), new Size(150, 2))), "ToEmail"),
new TemplateField(new TemplateRegexPosition("Invoice Number"), "InvoiceNumber"),
new TemplateField(new TemplateLinkedPosition(
"InvoiceNumber",
new Size(200, 15),
new TemplateLinkedPositionEdges(false, false, true, false)),
"InvoiceNumberValue"),
new TemplateField(new TemplateRegexPosition("Order Number"), "InvoiceOrder"),
new TemplateField(new TemplateLinkedPosition(
"InvoiceOrder",
new Size(200, 15),
new TemplateLinkedPositionEdges(false, false, true, false)),
"InvoiceOrderValue"),
new TemplateField(new TemplateRegexPosition("Invoice Date"), "InvoiceDate"),
new TemplateField(new TemplateLinkedPosition(
"InvoiceDate",
new Size(200, 15),
new TemplateLinkedPositionEdges(false, false, true, false)),
"InvoiceDateValue"),
new TemplateField(new TemplateRegexPosition("Due Date"), "DueDate"),
new TemplateField(new TemplateLinkedPosition(
"DueDate",
new Size(200, 15),
new TemplateLinkedPositionEdges(false, false, true, false)),
"DueDateValue"),
new TemplateField(new TemplateRegexPosition("Total Due"), "TotalDue"),
new TemplateField(new TemplateLinkedPosition(
"TotalDue",
new Size(200, 15),
new TemplateLinkedPositionEdges(false, false, true, false)),
"TotalDueValue"),
new TemplateTable(detailsTableParameters, "details", null),
new TemplateTable(summaryTableParameters, "summary", null)
};
// Create a document template
Template template = new Template(templateItems);
return template;
}
To learn more about template building and working with extracted data please refer the following guides:
You may easily run the code above and see the feature in action in our GitHub examples:
Along with full featured .NET library we provide simple, but powerful free Apps.
You are welcome to parse documents and extract data from PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more with our free online Free Online Document Parser App.
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