哎呦呵-Net的专栏

namespace Linq { public class Student { public int Id{get;set;} public string Name{get;set;} public int Age{get;set;} } class Program { s

static string conStr = @"server=.;database=a;uid=sa;pwd=a;"; /// /// ExecuteScalar /// /// sql语句 /// SqlParameter /// 查询结果表中最左上角单元格的数据 private static