Removing af row in dataset with XML
I wish to remove a datarow, how do I do that? In my code below I've added a new row, but if try to use the command .RemoveRow() an error occurs.
Code:
<%@ Page Language="vb" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>
<script runat="server">
Sub Page_Load(Sender As Object, E As EventArgs)
Dim objDataSet As New DataSet()
' read in the XML file
objDataSet.ReadXml(Server.MapPath("WroxBooks.xml"))
' show it in a grid
dgBooks1.DataSource = objDataSet.Tables(0).DefaultView
dgBooks1.DataBind()
' modify a row
' objDataSet.Tables("Employees").Rows(0).Item("FirstName") = "Bob"
' objDataSet.Tables("Employees").Rows(0).Item("LastName") = "Dylan"
' add a new row to the table
Dim objTable As DataTable
Dim objNewRow As DataRow
objTable = objDataSet.Tables("Books")
objNewRow = objTable.NewRow()
objNewRow.Item("BookName") = "ASP.Net in a Nutshell"
objNewRow.Item("ISBN") = "187390145"
objTable.Rows.Add(objNewRow)
' save it to a new file
objDataSet.WriteXml(Server.MapPath("WroxBooks2.xml"))
' read in the new file
Dim objDataSet2 As New DataSet()
objDataSet2.ReadXml(Server.MapPath("WroxBooks2.xml"))
' show it in another grid
dgBooks2.DataSource = objDataSet2.Tables(0).DefaultView
dgBooks2.DataBind()
End Sub
</script>
<html>
<head>
</head>
<body>
<table>
<tbody>
<tr>
<td valign="top">
<asp:DataGrid id="dgBooks1" runat="server"></asp:DataGrid>
</td>
<td valign="top">
<asp:DataGrid id="dgBooks2" runat="server"></asp:DataGrid>
</td>
</tr>
</tbody>
</table>
</body>
</html>
