执行SQL语句问题
页面内容lx2.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Data.OleDb;
public partial class lx2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string connStr = System.Configuration.ConfigurationSettings.AppSettings[ "connString "];


OleDbConnection myConnection = new OleDbConnection(connStr);
myConnection.Open();

string queryStr = "select * from [DA] ";

26行 SqlCommand myCommand = new SqlCommand(queryStr, myConnection);


}

}


错误提示：
编译器错误信息: CS1502: 与“System.Data.SqlClient.SqlCommand.SqlCommand(string, System.Data.SqlClient.SqlConnection)”最匹配的重载方法具有一些无效参数

错误行数：26行

[解决办法]
OleDbConnection myConnection = new OleDbConnection(connStr);
改成:
SqlConnection myConnection = new SqlConnection(connStr);