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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Configuration;
- using System.Data;
- using System.Data.SqlClient;
- namespace 数据绑定
- {
- class SqlHelper
- {
- private static string strconn= ConfigurationManager.ConnectionStrings["dbstrConn"].ConnectionString;
- public static int ExecuteNonQuery(string sql)
- {
- using (SqlConnection conn = new SqlConnection(strconn))
- {
- conn.Open();
- using (SqlCommand cmd = conn.CreateCommand())
- {
- cmd.CommandText = sql;
- return cmd.ExecuteNonQuery();
- }
- }
- }
- public static object ExecuteScalar(string sql)
- {
- using (SqlConnection conn = new SqlConnection(strconn))
- {
- conn.Open();
- using (SqlCommand cmd = conn.CreateCommand())
- {
- cmd.CommandText = sql;
- return cmd.ExecuteScalar();
- }
- }
- }
- //查询少量数据
- public static DataTable ExecuteTable(string sql)
- {
- using (SqlConnection conn = new SqlConnection(strconn))
- {
- conn.Open();
- using (SqlCommand cmd = conn.CreateCommand())
- {
- cmd.CommandText = sql;
- SqlDataAdapter adapter = new SqlDataAdapter(cmd);
- DataSet dataset = new DataSet();
- adapter.Fill(dataset);
- return dataset.Tables[0];
- }
- }
- }
- }
- }