asp.net连接数据库读取数据示例分享

webconfig配置:

前台aspx:

后台代码：

public partial class DB : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DataSet dsMSSQL = GetDataSet("select * from [Table]", "MSSQL");
        this.GridView1.DataSource = dsMSSQL;
        this.GridView1.DataBind();
    }

    protected DataSet GetDataSet(string SqlCommand,string DB)
    {
        DbProviderFactory dbProviderFactory = DbProviderFactories.GetFactory(ConfigurationManager.ConnectionStrings[DB].ProviderName);
        DbConnection dbConnection = dbProviderFactory.CreateConnection();
        dbConnection.ConnectionString = ConfigurationManager.ConnectionStrings[DB].ConnectionString;

        DataSet ds = new DataSet();

        DbCommand dbCommand = dbProviderFactory.CreateCommand();
        dbCommand.Connection = dbConnection;
        DbDataAdapter dbDataAdapter = dbProviderFactory.CreateDataAdapter();
        dbCommand.CommandText = SqlCommand;
        dbDataAdapter.SelectCommand = dbCommand;
        dbDataAdapter.Fill(ds);

        return ds;
    }
}
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