封装SQLHelper代码,Asp.Net代码库,德仔网

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【Asp.Net】封装SQLHelper

作者: / 发布于2011/5/31/ 515

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

namespace SqlHelper
view sourceprint?{
class SQLHelper
{
public static int ExecuteNonQuery(string sql,params SqlParameter[] parameters)
{
string conn = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
using (SqlConnection strconn = new SqlConnection(conn))
{
strconn.Open();
using (SqlCommand cmd = strconn.CreateCommand())
{
cmd.CommandText = sql;
foreach (SqlParameter parameter in parameters)
{
cmd.Parameters.Add(parameter);
}
return cmd.ExecuteNonQuery();
}
}

}
public static object ExecuteScalar(string sql, params SqlParameter[] parameters)
{
string conn = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
using (SqlConnection strconn = new SqlConnection(conn))
{
strconn.Open();
using (SqlCommand cmd = strconn.CreateCommand())
{
cmd.CommandText = sql;
foreach (SqlParameter parameter in parameters)
{
cmd.Parameters.Add(parameter);
}
return cmd.ExecuteScalar();
}
}

}
public static DataTable ExecuteDataTable(string sql, params SqlParameter[] parameters)
{
string conn = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
using (SqlConnection strconn = new SqlConnection(conn))
{
strconn.Open();
using (SqlCommand cmd = strconn.CreateCommand())
{
cmd.CommandText = sql;
foreach (SqlParameter parameter in parameters)
{
cmd.Parameters.Add(parameter);
}
DataSet dataset = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
adapter.Fill(dataset);
return dataset.Tables[0];


}
}


}
}
}
view sourceprint?使用：
view sourceprint?string name = Convert.ToString(SQLHelper.ExecuteScalar("select name from T_persons where <A href="<a href="mailto:id=@id">id=@id</A">mailto:id=@id">id=@id</A</a>>", new SqlParameter("id", 20)));

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