<%@import Namespace =Namespace=system.data%>
<%@import Namespace =Namespace=system.data.oledb%>
<script language=vb runat=server>Sub page_load()sub page_load() dim strConnection as string dim strSQL as string dim objDataSet as new DataSet() dim objConnection as OledbConnection dim objAdapter as OledbDataAdapter strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data Source=h:BegASPNETNorthwind.mdb" '使用的数据库是Access自带的示例文件：Northwind.mdb strSQL = "select 雇员ID,姓氏,名字 from 雇员" objConnection = new OledbConnection(strConnection) objAdapter = new OledbDataAdapter(strSQL , objConnection) objAdapter.fill(objDataSet , "Employees") dgNameList1.DataSource = objDataSet.Tables("Employees").DefaultView dgNameList1.DataBind() '-----------------------------------------------------------向表添加一个新行 dim objTable as DataTable dim objNewRow as DataRow objTable = objDataSet.Tables("Employees") objNewRow = objTable.NewRow() objNewRow("姓氏") = "聂" objNewRow("名字") = "大鹏" objTable.Rows.Add(objNewRow) objNewRow = objTable.NewRow() objNewRow("姓氏") = "王" objNewRow("名字") = "志东" objTable.Rows.Add(objNewRow) dgNameList2.DataSource = objTable.DefaultView dgNameList2.DataBind() '-----------------------------------------------------------更新表中的行 dim objRow as DataRow objRow = objTable.Rows(3) objRow("姓氏") = "谷" objRow("名字") = "丰" dgNameList3.DataSource = objTable.DefaultView dgNameList3.DataBind() '-----------------------------------------------------------删除表中的行 objTable.Rows(objTable.Rows.Count - 2).Delete() dgNameList4.DataSource = objTable.DefaultView dgNameList4.DataBind() '===========================================================更新数据源 dim objBuilder as OledbCommandBuilder objBuilder = new OledbCommandBuilder(objAdapter) objAdapter.UpdateCommand = objBuilder.GetUpdateCommand() objAdapter.InsertCommand = objBuilder.GetInsertCommand() objAdapter.DeleteCommand = objBuilder.GetDeleteCommand() objAdapter.Update(objDataSet , "Employees")
end sub</script><html><body><table width=100%> <tr> <td>原始数据</td> <td>添加行</td> <td>编辑行</td> <td>删除行</td> </tr> <tr> <td valign=top><asp:datagrid id=dgNameList1 runat=server /></td> <td valign=top><asp:datagrid id=dgNameList2 runat=server /></td> <td valign=top><asp:datagrid id=dgNameList3 runat=server /></td> <td valign=top><asp:datagrid id=dgNameList4 runat=server /></td> </tr> </table> <hr> <asp:datagrid id=dgUpd runat=server /></body></html>----react中的jsx简介)
----react中的jsx表达对象)
----react中将一个元素渲染为 DOM)
----只更新它需要更新的部分)
----react组件)
----react渲染组件)
----react中initialValue和value不能一起定义)