c# – 将控制台应用程序转换为Windows服务

我试图将生成pdf报告的控制台应用程序转换为Windows服务.我的代码如下.我正朝着正确的方向前进吗？我安装了这项服务,启动/停止工作正常,但没有生成报告！仅控制台应用程序可以正常生成Output.pdf.我的目标是在服务启...

我试图将生成pdf报告的控制台应用程序转换为Windows服务.我的代码如下.我正朝着正确的方向前进吗？我安装了这项服务,启动/停止工作正常,但没有生成报告！仅控制台应用程序可以正常生成Output.pdf.我的目标是在服务启动时生成输出.

class Program : ServiceBase
{
    public Program()
    {
        this.ServiceName = "My PdfGeneration";
    }
    static void Main(string[] args)
    {

        ServiceBase.Run(new Program());
    }
    protected override void OnStart(string[] args)
    {
        EventLog.WriteEntry("My PdfGeneration Started");
        //base.OnStart(args);
        //Customise parameters for render method
        Warning[] warnings;
        string[] streamIds;
        string mimeType = string.Empty;   //"application/pdf";
        string encoding = string.Empty;
        string filenameExtension = string.Empty;
        string deviceInfo = "<DeviceInfo>" + "<OutputFormat>PDF</OutputFormat>" + "<PageWidth>15in</PageWidth>" + "<PageHeight>11in</PageHeight>" + "<MarginTop>0.5in</MarginTop>" + "<MarginLeft>0.5in</MarginLeft>" + "<MarginRight>0.5in</MarginRight>" + "<MarginBottom>0.5in</MarginBottom>" + "</DeviceInfo>";

        //Create a SqlConnection to the AdventureWorks2008R2 database. 
        SqlConnection connection = new SqlConnection("data source=localhost;initial catalog=pod;integrated security=True");

        //Create a SqlDataAdapter for the Sales.Customer table.
        SqlDataAdapter adapter = new SqlDataAdapter();

        // A table mapping names the DataTable.
        adapter.TableMappings.Add("View", "Route_Manifest");

        // Open the connection.
        connection.Open();
        Console.WriteLine("\nThe SqlConnection is open.");

        // Create a SqlCommand to retrieve Suppliers data.
        SqlCommand command = new SqlCommand("SELECT TOP 10 [RouteID],[FullTruckID],[DriverID],[DriverName],[StopID],[CustomerID],[CustomerName],[InvoiceID],[last_modified],[Amount] FROM [pod].[dbo].[Route_Manifest]", connection);
        command.CommandType = CommandType.Text;

        // Set the SqlDataAdapter's SelectCommand.
        adapter.SelectCommand = command;
        command.ExecuteNonQuery();

        // Fill the DataSet.
        DataSet dataset = new DataSet("Route_Manifest");
        adapter.Fill(dataset);

        //Set up reportviewver and specify path
        ReportViewer viewer = new ReportViewer();
        viewer.ProcessingMode = ProcessingMode.Local;
        viewer.LocalReport.ReportPath = @"C:\Documents and Settings\xxxxx\My Documents\Visual Studio 2008\Projects\PdfReportGeneration\PdfReportGeneration\Report.rdlc";

        //specify the dataset syntax = (datasetofreport.rdlc,querydataset); 
        viewer.LocalReport.DataSources.Add(new ReportDataSource("podDataSet_Route_Manifest", dataset.Tables[0]));


        //Now render it to pdf
        try
        {
            byte[] bytes = viewer.LocalReport.Render("PDF", deviceInfo, out mimeType, out encoding, out filenameExtension, out streamIds, out warnings);
            //output to bin directory 
            using (System.IO.FileStream fs = new System.IO.FileStream("output.pdf", System.IO.FileMode.Create))
            {
                //file saved to bin directory
                fs.Write(bytes, 0, bytes.Length);
            }
            Console.WriteLine("\n YEP!! The report has been generated:-)");

            /*           //Save report to D:\ -- later
                         FileStream fsi = new FileStream(@"D:\output.pdf", System.IO.FileMode.Create);
            */
        }
        catch (Exception e)
        {
            Console.WriteLine("\n CHEY!!!this Exception encountered:", e);
        }


        // Close the connection.
        connection.Close();
        Console.WriteLine("\nThe SqlConnection is closed.");
        Console.ReadLine();

    }
    protected override void OnStop()
    {
        EventLog.WriteEntry("My PdfGeneration Stopped");
            base.OnStop();
    }

}

解决方法:

我建议你将OnStart事件中的代码移动到一个单独的线程,因为
您的服务需要及时启动,否则可能会超时
在启动时.

例如

using System.ServiceProcess;
using System.Threading;

namespace myService
{
    class Service : ServiceBase
    {
        static void Main()
        {
            ServiceBase.Run(new Service());
        }

        public Service()
        {
            Thread thread = new Thread(Actions);
            thread.Start();
        }

        public void Actions()
        {
            // Do Work
        }
    }
}

您可能还想检查执行用户(运行服务的用户上下文)
拥有您正在写入的文件夹的权限等.

您还需要将错误写入事件日志,而不是将其写入
控制台窗口就像在您的代码段中看到的那样(您的代码目前正在吞咽异常
这就是为什么你不能指出什么是错的)

阅读更多内容：
C# Basics: Creating a Windows Service