C# SqlServer操作类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;

namespace 数据库操作
{
class SqlHelper
{
public static string connStr = ConfigurationManager.ConnectionStrings["dbConnectionStr"].ConnectionString;

public static int ExecuteNonQuery(string sql,params SqlParameter[] SqlParams)
{
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
using (SqlCommand comm = conn.CreateCommand())
{
comm.CommandText = sql;
comm.Parameters.AddRange(SqlParams);
return comm.ExecuteNonQuery();
}
}
}

public static Object ExecuteScalar(string sql,params SqlParameter[] sqlParameters)
{
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
using (SqlCommand comm = conn.CreateCommand())
{
comm.CommandText = sql;
comm.Parameters.AddRange(sqlParameters);
return comm.ExecuteScalar();
}
}
}

public static SqlDataReader ExecuteReader(string sql,params SqlParameter[] SqlParams)
{
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
using (SqlCommand comm = conn.CreateCommand())
{
comm.CommandText = sql;
comm.Parameters.AddRange(SqlParams);
return comm.ExecuteReader();
}
}
}

public static DataTable ExecuteDataTable(string sql, params SqlParameter[] SqlParams)
{
using(SqlConnection conn = new SqlConnection(connStr)){
conn.Open();
using(SqlCommand comm = conn.CreateCommand()){
comm.CommandText = sql;
comm.Parameters.AddRange(SqlParams);
DataSet ds = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter(comm);
adapter.Fill(ds);
return ds.Tables[0];
}
}
}

}
}