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WPF中SqlHelper

发表于：2024-11-26 作者：热门IT资讯网编辑

编辑最后更新 2024年11月26日，using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Confi

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];
}
}
}
}
}

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