Import & Database Verbindung vollendet - Anfang vom Export
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namespace Projekt_Calcan_Conze_Export;
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internal static class Constants
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{
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public const string DateFormat = "yyyy-MM-dd";
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public const string Separator = ";";
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public const string MoneyFormat = "F2";
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}
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namespace Projekt_Calcan_Conze_Export.Models;
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internal class Billing
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{
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public Billing(
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DateOnly startDate,
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DateOnly endDate,
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string customerNumber,
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string customerName,
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List<BillingPosition> positions)
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{
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this.StartDate = startDate;
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this.EndDate = endDate;
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this.CustomerNumber = customerNumber;
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this.CustomerName = customerName;
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this.Positions = positions;
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}
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public DateOnly StartDate { get; }
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public DateOnly EndDate { get; }
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public string CustomerNumber { get; }
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public string CustomerName { get; }
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public double TotalAmount => this.Positions.Sum(p => p.TotalAmount);
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public List<BillingPosition> Positions { get; }
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public IEnumerable<string> ToCsvLines()
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{
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List<string> lines =
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[
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this.StartDate.ToString(Constants.DateFormat)
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+ Constants.Separator
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+ this.EndDate.ToString(Constants.DateFormat)
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+ Constants.Separator
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+ this.CustomerNumber
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+ Constants.Separator
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+ this.CustomerName
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+ Constants.Separator
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+ this.TotalAmount.ToString(Constants.MoneyFormat)
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];
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lines.AddRange(
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this.Positions
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.Select(
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position =>
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position.Description
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+ Constants.Separator
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+ position.BaseAmount.ToString(Constants.MoneyFormat)
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+ Constants.Separator
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+ position.Count
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+ Constants.Separator
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+ position.TotalAmount.ToString(Constants.MoneyFormat)
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+ Constants.Separator));
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return lines;
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}
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}
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internal class BillingPosition
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{
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public BillingPosition(string description, double baseAmount, int count)
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{
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this.Description = description;
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this.BaseAmount = baseAmount;
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this.Count = count;
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}
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public string Description { get; }
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public double BaseAmount { get; }
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public int Count { get; }
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public double TotalAmount => this.BaseAmount * this.Count;
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}
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110
Projekt_Calcan_Conze/Projekt_Calcan_Conze_Export/Program.cs
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110
Projekt_Calcan_Conze/Projekt_Calcan_Conze_Export/Program.cs
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using System.Globalization;
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using Projekt_Calcan_Conze_Export;
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using Projekt_Calcan_Conze_Export.Models;
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using Microsoft.VisualBasic;
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try
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{
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string? clientNumber = null;
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while (string.IsNullOrEmpty(clientNumber))
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{
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Console.WriteLine("Bitte gib eine Kundennummer an:");
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clientNumber = Console.ReadLine();
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}
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Console.WriteLine();
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DateOnly? startDate = null;
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while (startDate is null)
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{
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Console.WriteLine($"Bitte gib das Startdatum im folgenden Format an ({Constants.DateFormat}):");
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startDate =
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DateOnly.TryParseExact(
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Console.ReadLine() ?? string.Empty,
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Constants.DateFormat,
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CultureInfo.InvariantCulture,
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DateTimeStyles.None,
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out var start)
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? start
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: null;
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}
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Console.WriteLine();
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DateOnly? endDate = null;
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while (endDate is null)
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{
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Console.WriteLine($"Bitte gib das Enddatum im folgenden Format an ({Constants.DateFormat}):");
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endDate =
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DateOnly.TryParseExact(
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Console.ReadLine() ?? string.Empty,
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Constants.DateFormat,
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CultureInfo.InvariantCulture,
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DateTimeStyles.None,
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out var end)
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? end
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: null;
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if (endDate is not null
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&& endDate < startDate)
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{
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Console.WriteLine("Das Enddatum darf nicht vor dem Startdatum liegen.");
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endDate = null;
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}
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}
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Console.WriteLine();
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string? directoryPath = null;
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while (string.IsNullOrEmpty(directoryPath))
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{
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Console.WriteLine("Bitte gib einen Dateipfad für die Ausgabe an:");
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directoryPath = Console.ReadLine();
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if (directoryPath?.StartsWith('\"') ?? false)
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{
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directoryPath = directoryPath.Substring(startIndex: 1, length: directoryPath.Length - 1);
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}
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if (directoryPath?.EndsWith('\"') ?? false)
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{
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directoryPath = directoryPath.Substring(startIndex: 0, length: directoryPath.Length - 1);
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}
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if (!Path.Exists(directoryPath))
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{
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Console.WriteLine("Der angegebene Dateipfad existiert nicht.");
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directoryPath = null;
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}
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}
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List<Billing> billings =
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[
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new Billing(
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startDate: startDate.Value,
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endDate: endDate.Value,
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customerNumber: clientNumber,
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customerName: "Max Mustermann",
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positions:
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[
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new BillingPosition(
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description: "Testposition",
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baseAmount: 100.0,
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count: 3)
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])
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];
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string fileName =
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$"{DateTime.Today.ToString(Constants.DateFormat)}_{clientNumber}_{startDate.Value.ToString(Constants.DateFormat)}_{endDate.Value.ToString(Constants.DateFormat)}.csv";
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File.WriteAllLines(
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Path.Combine(directoryPath, fileName),
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billings.SelectMany(billing => billing.ToCsvLines()));
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Ein Fehler ist aufgetreten: {ex.Message}");
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}
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@@ -0,0 +1,10 @@
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>
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