program.cs

中文名：Windows Forms 程序设计 英文名：Windows Forms Programming in c# 作者： Chris Sells 翻译： 荣耀 蒋贤哲 出版社：人民

using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Deployment.Application;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace Wahoo {
  static class Program {
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main(string[] args) {

      Application.EnableVisualStyles();

      int columns = 10;
      int rows = 20;

      // Query string or command line args??
      if( ApplicationDeployment.IsNetworkDeployed ) {
        string activationUri = ApplicationDeployment.CurrentDeployment.ActivationUri.AbsoluteUri;
        if( !string.IsNullOrEmpty(activationUri) ) {
          Uri uri = new Uri(activationUri);
          if( !string.IsNullOrEmpty(uri.Query) ) {
            // Parse (expecting format: "?columns=Xxx&rows=Xxx")
            string query = uri.Query.ToLower();
            GetQueryArg(query, "columns", ref columns);
            GetQueryArg(query, "rows", ref rows);
          }
        }
      }
      else {
        // Process command line args as per normal
        if( args != null && args.Length == 2 ) {
          columns = int.Parse(args[0]);
          rows = int.Parse(args[1]);
        }
      }

      Application.Run(new MainForm(columns, rows));
    }

    // A query string extraction helper
    static bool GetQueryArg<T>(string query, string arg, ref T value) {
      Regex regex = new Regex(arg + "=(?<value>[^&]*)");
      Match match = regex.Match(query);
      if( match == null ) { return false; }

      string s = match.Groups["value"].Value;
      if( string.IsNullOrEmpty(s) ) { return false; }

      TypeConverter converter = TypeDescriptor.GetConverter(typeof(T));
      if( !converter.CanConvertFrom(typeof(string)) ) { return false; }
      value = (T)converter.ConvertFrom(s);
      return true;
    }
  }
}