private void GetInvoiceKeyValuePairs(ExtractedPage page, InvoicePage invPage)
{
foreach (var kv in page.KeyValuePairs)
{
if (kv.Key.Count > 0)
{
if (FormOutputToInvoice.ContainsKey(kv.Key[0].Text))
{
string dictionaryValue = FormOutputToInvoice[kv.Key[0].Text];
// Normally we will have to write a humoungous switch statement to set the value for the correspoding property
// Instead, we are takning advantage of reflection to set the value to the property
/* switch (dictionaryValue)
* {
* case "InvoiceDate":
* invPage.InvoiceDate = kv.Value[0].Text;
* break;
* case "InvoiceNumber":
* invPage.InvoiceNumber = kv.Value[0].Text;
* break;
* // and SO ON
* default:
* break;
* }
*
*/
// Use Reflection to get a reference to the property based on name of the property as a string
PropertyInfo piInstance = typeof(InvoicePage).GetProperty(FormOutputToInvoice[kv.Key[0].Text]);
if (kv.Value.Count > 0)
{
//TODO: Right now, I am changing all properties to string type to test.
// Change these data types back and see how to type cast kv.Value[0].Text to the correct datatype and set the value
// Concatenate the values if more than one value is there for a key, for example FROM and TO
// using a linq expression here to concatenate the values instead of a for loop
/* StringBuilder sb = new StringBuilder();
* foreach (var s in kv.Value )
* {
* sb.Append(s.Text);
* }
* piInstance.SetValue(invPage, sb.ToString(), null);
*/
piInstance.SetValue(invPage, string.Join(", ", kv.Value.Select(v => v.Text)), null);
// If there is only one value for a given key, the following code would have been sufficient
//piInstance.SetValue(invPage, kv.Value[0].Text, null);
}
}
}
}
}
private InvoicePage GetInvoicePage(ExtractedPage page)
{
InvoicePage invPage = new InvoicePage()
{
PageNumber = page.Number
};
// Take the KeyValuePairs from page (returned by Form Recognizer) and set the properties of InvoicePage object
GetInvoiceKeyValuePairs(page, invPage);
// Take the Tables from page (returned by Form Recognizer) and assign each table info to InvoiceLineItem object
// and add that line item object to Invoice Page line item collection
GetInvoiceTables(page, invPage);
return(invPage);
}
private void GetInvoiceTables(ExtractedPage page, InvoicePage invPage)
{
foreach (var t in page.Tables)
{
// Each column will have the same number of entries. Take the entries in the first column (any column is OK)
int numberOfRows = ((t.Columns.Count > 0 && t.Columns[0].Entries.Count > 0) ? t.Columns[0].Entries.Count : 0);
if (numberOfRows > 0)
{
//Create number of InvoiceLineItems corresponding to number of rows in the table
/* List<InvoiceLineItem> invoiceLineItems = new List<InvoiceLineItem>();
* for (int i = 0; i < numberOfRows; i++)
* {
* invoiceLineItems.Add(new InvoiceLineItem());
* }
*/
List <InvoiceLineItem> invoiceLineItems = Enumerable.Range(0, numberOfRows)
.Select(i => new InvoiceLineItem())
.ToList();
// Fill each row
foreach (var c in t.Columns)
{
if (FormOutputToInvoice.ContainsKey(c.Header[0].Text))
{
PropertyInfo piInstance = typeof(InvoiceLineItem).GetProperty(FormOutputToInvoice[c.Header[0].Text]);
for (int i = 0; i < numberOfRows; i++)
{
// As each entry contains only one value, we take the first value
piInstance.SetValue(invoiceLineItems[i], c.Entries[i][0].Text, null);
}
}
}
invPage.invoiceLineItems = invoiceLineItems;
}
}
}
private object GetInvoiceDetailsfromSample()
{
Invoice inv = new Invoice();
InvoicePage invPage = new InvoicePage()
{
InvoiceDate = "2018/12/24",
InvoiceNumber = "544",
Terms = "NET 30",
Due = "2019/01/24",
Subtotal = "3000.00",
TaxPercent = "6.50",
TaxAmount = "195.00",
BalanceDue = "3195.00"
};
//First line
InvoiceLineItem invLineItem = new InvoiceLineItem()
{
SerialNumber = "1",
ItemDescription = "Item 1",
Quantity = "2",
Price = "600.00",
Amount = "1200.00"
/*SerialNumber = 1,
* ItemDescription = "Item 1",
* Quantity = 2,
* Price = 600.00,
* Amount = 1200.00
*/
};
invPage.invoiceLineItems.Add(invLineItem);
// Second Line
InvoiceLineItem invLineItem2 = new InvoiceLineItem()
{
SerialNumber = "2",
ItemDescription = "Item 2",
Quantity = "4",
Price = "450.00",
Amount = "1800.00"
/*SerialNumber = 2,
* ItemDescription = "Item 2",
* Quantity = 4,
* Price = 450.00,
* Amount = 1800.00
*/
};
invPage.invoiceLineItems.Add(invLineItem2);
inv.invoicePages.Add(invPage);
var jsonResult = JsonConvert.SerializeObject(inv);
return(jsonResult);
}