如何手工购造DataSet

[liubocs]

请问如何手工购造DataSet

[Latitude]

dataset是由datatable和datarelationcollection组成的，datatable是由datarowcollection,datacolumncollection和ConstraintCollection组成的。
MSDN里有呀：
创建：
[VB.net]
Dim custDS As DataSet = New DataSet("CustomerOrders")
[C#]
DataSet custDS = new DataSet("CustomerOrders");
添加datatable:
[vb.net]
Dim ordersTable As DataTable = custDS.Tables.Add("Orders")

Dim pkCol As DataColumn = ordersTable.Columns.Add("OrderID", Type.GetType("System.Int32"))
ordersTable.Columns.Add("OrderQuantity", Type.GetType("System.Int32"))
ordersTable.Columns.Add("CompanyName", Type.GetType("System.String"))

ordersTable.PrimaryKey = New DataColumn() {pkCol}
[C#]
DataSet custDS = new DataSet("CustomerOrders");

DataTable ordersTable = custDS.Tables.Add("Orders");

DataColumn pkCol = ordersTable.Columns.Add("OrderID", typeof(Int32));
ordersTable.Columns.Add("OrderQuantity", typeof(Int32));
ordersTable.Columns.Add("CompanyName", typeof(string));

ordersTable.PrimaryKey = new DataColumn[] {pkCol};

[titicaca]

详细！！