C#工作流示例(WorkflowCore) - 教程

using Microsoft.Extensions.DependencyInjection;
using WorkflowCore.Interface;
using WorkflowCore.Models;
namespace LeaveRequestWorkflow
{
// 请假申请单
public class LeaveBill
{
///
/// 申请人
///
public string EmployeeName { get; set; }
///
/// 请假起始时间
///
public DateTime StartDate { get; set; }
///
/// 请假结束时间
///
public DateTime EndDate { get; set; }
///
/// 请假原因
///
public string Reason { get; set; }
///
/// 经理意见
///
public string ManagerComment { get; set; }
///
/// 是否同意
///
public bool IsApproved { get; set; }
///
/// 创建时间
///
public DateTime CreateAt { get; set; }
///
/// 处理时间
///
public DateTime ProcessedAt { get; set; }
}
// 请假申请
public class ApplyLeave : StepBody
{
public override ExecutionResult Run(IStepExecutionContext context)
{
var bill = (LeaveBill)context.Workflow.Data;
bill.CreateAt = DateTime.Now;
Console.WriteLine($"请假申请已提交 - 员工: {bill.EmployeeName},时间: {bill.StartDate.ToShortDateString()} 到 {bill.EndDate.ToShortDateString()}, 原因: {bill.Reason}");
return ExecutionResult.Next();
}
}
// 经理审批
public class ManagerApproval : StepBody
{
public override ExecutionResult Run(IStepExecutionContext context)
{
var bill = (LeaveBill)context.Workflow.Data;
bill.ProcessedAt = DateTime.Now;
Console.WriteLine($"经理审批中 - {bill.EmployeeName} 的请假申请");
// 简单模拟：请假天数小于5天自动批准，否则拒绝
var leaveDays = (bill.EndDate - bill.StartDate).Days;
if (leaveDays
{
public string Id => "LeaveRequestWorkflow";
public int Version => 1;
public void Build(IWorkflowBuilder builder)
{
builder
.StartWith()
.Then()
.Then();
}
}
class Program
{
static IServiceProvider ConfigureServices()
{
IServiceCollection services = new ServiceCollection();
// 添加日志服务
services.AddLogging();
// 添加 WorkflowCore
services.AddWorkflow();
// 注册你的工作流步骤（确保它们可以被DI容器创建）
services.AddTransient();
services.AddTransient();
services.AddTransient();
return services.BuildServiceProvider();
}
static async Task Main(string[] args)
{
IServiceProvider serviceProvider = ConfigureServices();
var host = serviceProvider.GetService();
// 注册工作流
host?.RegisterWorkflow();
// 启动工作流主机
host?.Start();
Console.WriteLine("\r\n工作流示例（WorkflowCore）\r\n");
// 创建新的请假申请
var request = new LeaveBill();
Console.WriteLine(">>> 请假申请单 <<<\r\n");
Console.Write("员工姓名: ");
request.EmployeeName = Console.ReadLine();
Console.Write("开始日期 (yyyy-mm-dd): ");
if (DateTime.TryParse(Console.ReadLine(), out DateTime startDate))
request.StartDate = startDate;
else
request.StartDate = DateTime.Now.AddDays(1);
Console.Write("结束日期 (yyyy-mm-dd): ");
if (DateTime.TryParse(Console.ReadLine(), out DateTime endDate))
request.EndDate = endDate;
else
request.EndDate = DateTime.Now.AddDays(2);
Console.Write("请假原因: ");
request.Reason = Console.ReadLine();
// 启动工作流
var workflowId = await host.StartWorkflow("LeaveRequestWorkflow", request);
Console.WriteLine($"请假申请已提交，工作流ID: {workflowId}");
// 等待一会儿让工作流处理
await Task.Delay(2000);
host?.Stop();
}
}
}