C# 获取或设置本地打印机及配置文件操作

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Drawing.Printing;
using System.Runtime.InteropServices;
using System.Drawing;

namespace Demo
{
    public class SettingConfiguration
    {
        [DllImport("winspool.drv")]
        public static extern bool SetDefaultPrinter(String Name); //调用WinAPI将指定名称的打印机设置为默认打印机

        private static PrintDocument fPrintDocument = new PrintDocument();
        /// <summary>
        /// 获取本机默认打印机名称
        /// </summary>
        public static string DefaultPrinter
        {
            get
            {
                return fPrintDocument.PrinterSettings.PrinterName;
            }
        }

        private static string printerName = DefaultPrinter;
        /// <summary>
        /// 获取或设置打印机,默认获取本机默认打印机
        /// </summary>
        public static string PrinterName
        {
            get { return printerName; }
            set { printerName = value; }
        }

        /// <summary>
        /// 获取本机的打印机列表。列表中的第一项就是默认打印机。
        /// </summary>
        public static List<String> GetLocalPrinters()
        {
            try
            {
                List<String> fPrinters = new List<string>();
                fPrinters.Add(DefaultPrinter); // 默认打印机始终出现在列表的第一项
                foreach (String fPrinterName in PrinterSettings.InstalledPrinters)
                {
                    if (!fPrinters.Contains(fPrinterName))
                        fPrinters.Add(fPrinterName);
                }
                return fPrinters;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

/// <summary> /// 获取指定节点的配置信息 /// </summary> /// <param name="configName"></param> /// <returns></returns> public static string GetConfiguration(string configName) { string configVaule = ConfigurationManager.AppSettings[configName]; if (configVaule != null && configVaule != "") { return configVaule.ToString(); } return ""; } /// <summary> /// 判断是否存在节点 /// </summary> /// <param name="configName"></param> /// <returns></returns> public static bool ConfigExists(string configName) { string configVaule = ConfigurationManager.AppSettings[configName]; if (configVaule == null) { return false; } return true; } /// <summary> /// 移除指定的 app.config 节点 /// </summary> /// <param name="configName"></param> public static void RemoveConfigurationNode(string configName) { try { ConfigurationManager.AppSettings.Remove(configName); ConfigurationManager.RefreshSection("appSettings");// 刷新命名节,在下次检索它时将从磁盘重新读取它。 } catch (Exception ex) { throw ex; } } /// <summary> /// /// </summary> /// <param name="SetModel">Add/set</param> /// <param name="key"></param> /// <param name="value"></param> public static void SetConfiguration(string key, string value) { try { //更新配置文件: Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); bool setModel = ConfigExists(key); if (setModel) { //config.AppSettings.Settings.Remove(key); ////添加 //config.AppSettings.Settings.Add(key, value); //修改 config.AppSettings.Settings[key].Value = value; } else { //添加 config.AppSettings.Settings.Add(key, value); } //最后调用 config.Save(ConfigurationSaveMode.Modified); //当前的配置文件更新成功。 ConfigurationManager.RefreshSection("appSettings");// 刷新命名节,在下次检索它时将从磁盘重新读取它。记住应用程序要刷新节点 } catch (Exception ex) { throw ex; } } public static string GetAppPath() { try { string appPath = System.Windows.Forms.Application.StartupPath.ToLower(); appPath = appPath.Replace("\\Debug", ""); appPath = appPath.Replace("\\Release", ""); appPath = appPath.Replace("bin", ""); return appPath; } catch (Exception) { throw; } } /// <summary> /// 实现byte[]转换成十六进制String /// </summary> /// <param name="arrByte"></param> /// <returns></returns> public static string ByteToString(byte[] arrByte) { StringBuilder sb = new StringBuilder(); foreach (byte by in arrByte) { sb.Append(by > 15 ? Convert.ToString(by, 16) : '0' + Convert.ToString(by, 16)); } return sb.ToString(); } /// <summary> /// 时间戳转为C#格式时间 /// </summary> /// <param name="timeStamp">Unix时间戳格式</param> /// <returns>C#格式时间</returns> public static DateTime GetTime(string timeStamp) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(timeStamp + "0000000"); TimeSpan toNow = new TimeSpan(lTime); return dtStart.Add(toNow); } /// <summary> /// DateTime时间格式转换为Unix时间戳格式 /// </summary> /// <param name="time"> DateTime时间格式</param> /// <returns>Unix时间戳格式</returns> public static int ConvertDateTimeInt(System.DateTime time) { System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); return (int)(time - startTime).TotalSeconds; } /// <summary> /// /// </summary> /// <param name="value"></param> /// <returns></returns> public static int ConvertString16ToNumber(string value) { return Int32.Parse(value, System.Globalization.NumberStyles.HexNumber); } /// <summary> /// 分割字符串 /// </summary> /// <param name="strOld"></param> /// <param name="splitChar"></param> /// <returns></returns> public static string[] SplitValue(string strOld, char splitChar) { try { string[] strNew = strOld.Split(splitChar); return strNew; } catch (Exception) { throw; } } } }

 

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