DataSet的手工创建

public DataSet BulidDataSet()

        {

            DataSet ds=new DataSet();

            DataTable dt = new DataTable();

            DataColumn col = new DataColumn("姓名",typeof(string));

            col.MaxLength = 20;

            dt.Columns.Add(col);                   //注意是dt.columns 然后ADD

            DataColumn col1 = new DataColumn("年龄", typeof(int));

            col.MaxLength = 20;

            dt.Columns.Add(col1);

            DataRow rw =dt.NewRow();          //给DT增加一个新行对象

            rw["姓名"] = "aking";

            rw["年龄"] = 26;

            dt.Rows.Add(rw);                         //   dt.Rows.Add(dt.NewRow());   增加一个空

            DataRow rw1 = dt.NewRow();

            rw1["姓名"] = "yao";

            rw1["年龄"] = 26;

            dt.Rows.Add(rw1);

            DataRow rw2 = dt.NewRow();

            rw2["姓名"] = "Ayao";

            rw2["年龄"] = 26;

            dt.Rows.Add(rw2);

            ds.Tables.Add(dt);

            return ds;

        }


   更有逻辑性如下
DataSet ret=new DataSet();
DataTable dt=new DataTable();
dt.Columns.Add(new DataColumn("ID",Type.GetType("System.Int32")));
dt.Columns.Add(new DataColumn("Name",Type.GetType("System.Strig")));
//到这一个dt已经建完
//下面就要添加数据

 DataRow rw1 = dt.NewRow();

 rw1["ID"] = "yao"; rw1["Name"] = "aking"; dt.Rows.Add(rw1);