DataTable dt = new DataTable();
DataSet ds = new DataSet();
SqlDataAdapter adapt = new SqlDataAdapter(sql语句,数据库连接对象);
adapte.fill(ds,"Table");
dt = ds.Tables["Table"];
for (int i = 0; i < dt.Columns.Count;i++ ) //小于DataTable表中的集合总数循环
{
TextBox XX = this.FindControl("XX" + (i + 1).ToString()) as TextBox; //获取web页中控件
XX.Text = dt.Rows[i]["Item"].ToString(); //Item为列名名称
}