namespace database1 
 { 
 using System; 
 using System.Data.ADO; 
  
 public class Class1 
 { 
 public Class1() 
 { 
 // 
 // 在这里添加Constructor的逻辑 
 // 
 } 
  
 public static int Main(string[] args) 
 { 
 try 
 { 
 ADOConnection s = new ADOConnection("Data Source=mymdb"); 
 s.Open(); 
 Console.WriteLine("Connection Established"); 
  
 //创建表 
 Console.Write("Want to Create a Table?(y/n) "); 
 string ch = Console.ReadLine(); 
 if (ch == "y") 
 { 
 ADOCommand CreateTable = new ADOCommand("Create Table a1(vno integer,name char(20))", s); 
 CreateTable.ExecuteNonQuery(); 
 Console.WriteLine("AOCommand Executed / Table Created"); 
 } 
   
 //在表中插入值 
 Console.Write("Want to Insert Some values in a Table?(y/n) "); 
 ch = Console.ReadLine(); 
 if (ch == "y") 
 { 
 ADOCommand InsTable = new 
 ADOCommand("insert into a1 values(1, 'hi')", s); 
  
 InsTable.ExecuteNonQuery(); 
 Console.WriteLine("Values Inserted"); 
 } 
  
 //删除整个表 
 Console.Write("Want to Delete All Records Present in the Table?(y/n) "); 
 ch = Console.ReadLine(); 
 if (ch == "y") 
 { 
 ADOCommand DeleteTable = new ADOCommand("Delete from a1", s); 
 DeleteTable.ExecuteNonQuery(); 
 Console.WriteLine("All Records Deleted From the Table"); 
 } 
  
 //看所有记录 
 Console.Write("Want to See all the Records Present in the Table /Database (y/n)? "); 
 ch = Console.ReadLine(); 
 if (ch == "y") 
 { 
 ADOCommand AllRecs = new ADOCommand("select * from a1", s); 
 ADODataReader r; 
 AllRecs.Execute(out r); 
 while(r.Read()) 
 { 
 for(int i=0; i < r.FieldCount;i++) 
 { 
 Console.Write(r.GetValue(i)+ " "); 
 } 
 Console.WriteLine(); 
 } 
 Console.WriteLine("All Records Displayed"); 
 r.Close(); 
 } 
  
 s.Close(); 
 Console.ReadLine(); 
 } 
 catch(System.Exception e) 
 { 
 Console.WriteLine(e.ToString()); 
 Console.ReadLine(); 
 } 
  
 return 0; 
 } // Main函数结束 
 } // Class结束 
 }// 名字空间结束