using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Data.SqlClient;
using?System.Data;

namespace?WindowsFormsApplication1
{
	class?DataAccesss
	{
		private?string?str_con?=?“server=.;database=student;uid=sa;pwd=123456;“;
		SqlConnection?con;
		SqlCommand?cmd;
		SqlDataAdapter?da;
		DataSet[]?DsArr?=?new?DataSet[10]?{?new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）new?DataSet（）};
		public?DataTable?Show（string?sqlint?count）?
		{
			DataTable?dt?=?new?DataTable（）;
			try
			{
				if?（sql?==?null）?return?dt;
				con?=?new?SqlConnection（str_con）;
				da?=?new?SqlDataAdapter（sql?con）;
				da.Fill（DsArr[count]）;
				dt?=?DsArr[count].Tables[0];
			}
			catch?（Exception）{}
			return?dt;
		}

		public?bool?ExecuteNonQuery（string?sql）?
		{
			con?=?new?SqlConnection（str_con）;
			con.Open（）;
			cmd?=?new?SqlCommand（sql?con）;
			if?（cmd.ExecuteNonQuery（）?!=?0）
			{
				con.Close（）;
				return?true;
			}
			else
			{
				con.Close（）;
				return?false;
			}
		}
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-03-18?13:12??GDI+\
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\
?????文件????????1150??2017-03-18?14:38??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\DataAccesss.cs
?????文件????????6167??2017-03-21?13:00??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form1.Designer.cs
?????文件???????12180??2017-03-21?13:01??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs
?????文件????????5817??2017-03-21?13:00??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form1.resx
?????文件????????2728??2017-03-21?12:42??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form2.cs
?????文件????????2869??2017-03-21?12:42??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form2.designer.cs
?????文件????????5817??2017-03-21?12:42??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Form2.resx
?????文件?????????439??2017-03-21?13:01??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Program.cs
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\
?????文件????????1398??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\AssemblyInfo.cs
?????文件????????2551??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.Designer.cs
?????文件????????5612??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.resx
?????文件????????1032??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.Designer.cs
?????文件?????????249??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.settings
?????文件????????4053??2017-03-21?12:41??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\WindowsFormsApplication1.csproj
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\
?????文件???????21504??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
?????文件???????38400??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb
?????文件???????11600??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe
?????文件?????????490??2010-03-17?22:39??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\
?????目錄???????????0??2017-03-18?13:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\
?????文件????????7473??2017-03-20?21:12??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6329??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????548??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件????????1302??2017-03-21?13:02??GDI+\WindowsFormsApplication1\WindowsFormsApplication1\obj\x86\Debug\GenerateResource.write.1.tlog
............此處省略12個文件信息