88 lines
3.4 KiB
C#
88 lines
3.4 KiB
C#
using PuppeteerSharp;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace PuppeteerSharpTest
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{
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public partial class Form1 : Form
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{
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public Form1()
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{
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InitializeComponent();
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}
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private async void btnScrape_Click(object sender, EventArgs e)
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{
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var result = await LoadXXXAsync();
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}
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private async Task<DtoEst> LoadXXXAsync()
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{
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// downloads chromium to the local project, needed by Puppeteer Sharp for execution, takes about 2 min!
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await new BrowserFetcher().DownloadAsync();
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// await new BrowserFetcher().DownloadAsync(DefaultChromiumRevision);
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DtoEst dto = new DtoEst();
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//var url = "https://www.xxxxxx.xhtml";
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var url = "https://www.bmf-steuerrechner.de/ekst/eingabeformekst.xhtml";
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#region SELECTORS
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// https://stackoverflow.com/questions/45110893/select-elements-by-attributes-with-colon
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// use css escapes: https://mothereff.in/css-escapes
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string id_checkbox_IsMarried = "bmf_form_ekst:ekst_pv:0";
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string id_input_Umsatz = "bmf_form_ekst:ekst_zve";
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string id_button_Submit2 = @"#bmf_form_ekst\3A income_ekst";
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string NettoUmsatz = txtNettoUmsatz.Text;
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#endregion
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//// This statement downloads and installs chromium
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//await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
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var browser = await Puppeteer.LaunchAsync(new LaunchOptions
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{
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Headless = true
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});
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using (var page = await browser.NewPageAsync())
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{
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// load page
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await page.GoToAsync(url);
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// wait for element to be there
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await page.WaitForExpressionAsync($"document.getElementById('{id_input_Umsatz}')!=null");
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await page.EvaluateExpressionAsync($"document.getElementById('{id_input_Umsatz}').value = '{NettoUmsatz}';");
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// get element value
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var val = await page.EvaluateFunctionAsync<string>($"()=>document.getElementById('{id_input_Umsatz}').value");
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// wait for element to be there
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await page.WaitForExpressionAsync($"document.getElementById('{id_checkbox_IsMarried}')!=null");
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await page.EvaluateExpressionAsync($"document.getElementById('{id_checkbox_IsMarried}').checked = false;");
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await page.ClickAsync(id_button_Submit2);
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// wait for redirect
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await page.WaitForNavigationAsync();
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// get value from element
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var strValueEst = await page.EvaluateFunctionAsync<string>("()=>document.querySelector('#ui-id-4 > div.ekst_ergebnis > div:nth-child(6) > table > tbody > tr:nth-child(3) > td:nth-child(2) > strong').textContent");
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// get value from element
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var strValueEstPercent = await page.EvaluateFunctionAsync<string>("()=>document.querySelector('#ui-id-4 > div.ekst_ergebnis > div:nth-child(6) > table > tbody > tr:nth-child(3) > td:nth-child(3) > strong').textContent");
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var deDE = new CultureInfo("de-DE");
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Decimal.TryParse(strValueEst.TrimEnd(" Euro".ToCharArray()), NumberStyles.AllowThousands | NumberStyles.AllowDecimalPoint, deDE, out var decValueEst);
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Decimal.TryParse(strValueEstPercent.TrimEnd(" %".ToCharArray()), NumberStyles.AllowThousands | NumberStyles.AllowDecimalPoint, deDE, out var decValueEstPercent);
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dto.EstBetrag = decValueEst;
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dto.EstProzentsatz = decValueEstPercent;
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}
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return await Task.FromResult(dto);
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}
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}
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}
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