本文實例為大家分享了ADO.NET通用數據庫訪問類，供大家參考學習，具體內容如下
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Data;using System.Data.SqlClient;namespace Test{ public class DBHelper { public static string ConString = "Data Source=.;Initial Catalog=bankdb;User id=sa;Password=123;"; //執行增刪改的方法 public static int RunNoQuery(string cmdText, CommandType cmdType, params SqlParameter[] pars) { SqlConnection con = new SqlConnection(ConString); con.Open(); SqlCommand cmd = new SqlCommand(cmdText, con); cmd.CommandType = cmdType; if (pars != null && pars.Length > 0) { foreach (SqlParameter p in pars) { cmd.Parameters.Add(p); } } int rows = cmd.ExecuteNonQuery(); con.Close(); return rows; } //執行查詢（DataSet）的方法 public static DataSet RunSelect(string cmdText, CommandType cmdType, params SqlParameter[] pars) { SqlConnection con = new SqlConnection(ConString); SqlDataAdapter da = new SqlDataAdapter(cmdText, con); da.SelectCommand.CommandType = cmdType; if (pars != null && pars.Length > 0) { foreach (SqlParameter p in pars) { da.SelectCommand.Parameters.Add(p); } } DataSet ds = new DataSet(); da.Fill(ds); return ds; } //執行查詢得到一個值 public static object RunOneValue(string cmdText, CommandType cmdType, params SqlParameter[] pars) { SqlConnection con = new SqlConnection(ConString); con.Open(); SqlCommand cmd = new SqlCommand(cmdText, con); cmd.CommandType = cmdType; if (pars != null && pars.Length > 0) { foreach (SqlParameter p in pars) { cmd.Parameters.Add(p); } } object obj = cmd.ExecuteScalar(); con.Close(); return obj; } }} 以上就是本文的全部內容，希望對大家的學習有所幫助。
