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//ÒòΪ²Ù×÷×¢²á±íµÄÁ½¸öÀàRegistryKeyºÍRegistry¶¼°üº¬ÔÚ´ËÒýÓÃÖУ»
 
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1¡¢ #region      ÏÞÖÆÈí¼þµÄʹÓôÎÊý
        private void BtnTimes_Click(object sender, EventArgs e)
        {
            try
            {
                 //ÔÚ×¢²á±íÖд´½¨×Ó¼ü
                RegistryKey rk = Registry.LocalMachine.CreateSubKey("SOFTWARE\\Microsoft\\Windows\\Currentversion\\Run\\nums"); //CreateSubKey´ò¿ªºÍ´´½¨Á½ÖÖ¹¦ÄÜ
                int numscount = (int)rk.GetValue("nums", 0);        //¶Áȡע²á±íÖÐÈí¼þʹÓôÎÊý
                if (numscount >= 10£©
                {
                    MessageBox.Show("²»ºÃÒâ˼£¬ÄãÊÇ·Ç×¢²áÓû§£¬Ö»ÄÜÃâ·ÑʹÓÃÊ®´Î£¬Çë×¢²á£¡", "ϵͳÌáʾ", MessageBoxButtons.OK,MessageBoxIcon.Warning);
                    rk.Close();       //¹Ø±Õ×¢²á±í
                    this.Close();    //Í˳ö³ÌÐò
                }
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml;
namespace WebApplication2
{
    /// <summary>
    /// XMLHelper XMLÎĵµ²Ù×÷¹ÜÀíÆ÷
  &nb ......

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<%=RetInfo("DB","Êý¾Ý¿â") %>
<%=RetInfo("YX_UpFile","ÉÏ´«Îļþ") %>
<%=RetfileInfo("Include/", "¹ã¸æ")%>
//´Óǰ̨µ÷Óúǫ́·½·¨
//´Óǰ̨µ÷Óúǫ́µÄ·½·¨..²¢ÏòÆä·½·¨´«È벻ͬµÄ²ÎÊý!
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<ItemTemplate >
<%#Ret_stat(Convert.ToInt16(Eval("YX_Stat1")), "Èȵã")%> ......

ArcEngine ͼÀýC#Ô´Âë:

private void MakeLegend(IActiveView activeView,IPageLayout pageLayout)
      {
          //¶¨ÒåͼÀýUID¶ÔÏó
          UID uid = new UIDClass();
      &n ......

c#²Ù×÷Excel һЩÎÊÌâ ×Ö·û±äΪnull½â¾ö·½·¨


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C#¶ÁÈ¡ExcelÐèҪעÒâµÄ£º
IMEX=1£º»ìºÏģʽ
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