Advertisement

04.18.2008 at 03:33AM PDT, ID: 23333724
[x]
Attachment Details

There is no row at position 0 -> DataSet and Objectdatasource ( Need help to fix problem in Code)

Asked by fosiul01 in Visual Studio .NET 2005, Programming for ASP.NET, ADO.Net Class Library

Tags: vb.net 2005(Web programming)

HI,  i have Asked  this question here before : http://www.experts-exchange.com/Microsoft/Development/.NET/Visual_Studio_.NET_2005/Q_23333489.html l, but The expert said to open again .  hence, i opened a new questions for your help.

Problem is : i am following this sites for this tutorial http://msconline.maconstate.edu/tutorials/ASPNET20/default.htm.
i did what Auther said, but When i am running the programm and trying to delete record , its saying " There is no row at position 0 ".
In my table there are more then 10 record, but the Code is not  getting any record in Dataset
I have attached the Code and picture of my problem as well.

Note : What step we took for trouble shooting previously, please have a look to my prevous question-http://www.experts-exchange.com/Microsoft/Development/.NET/Visual_Studio_.NET_2005/Q_23333489.html
Start Free Trial 
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:
72:
73:
74:
75:
76:
77:
78:
79:
80:
81:
82:
83:
84:
85:
86:
87:
88:
89:
90:
91:
92:
93:
94:
95:
96:
97:
98:
99:
100:
101:
102:
103:
104:

***************************************DBclass.vb*******************************
Imports Microsoft.VisualBasic
Imports System.Data.OleDb
Imports System.Data
 
Public Class DSClass
    Function Select_BookIDs()
        Dim DBConnection As OleDbConnection
        Dim DBCommand As OleDbCommand
        Dim DBReader As OleDbDataReader
        Dim SQLString As String
        DBConnection = New OleDbConnection( _
          "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\BooksDB.mdb")
        DBConnection.Open()
        SQLString = "SELECT DISTINCT BookID FROM Books ORDER BY BookID"
        DBCommand = New OleDbCommand(SQLString, DBConnection)
        DBReader = DBCommand.ExecuteReader()
        Return DBReader
        DBReader.Close()
        DBConnection.Close()
    End Function
 
    Function Select_Book(ByVal BookID As String)
        Dim DBConnection As OleDbConnection
        Dim DBAdapter As OleDbDataAdapter
        Dim DBDataSet As DataSet
        Dim SQLString As String
        DBConnection = New OleDbConnection( _
          "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\BooksDB.mdb")
        SQLString = "SELECT * FROM Books WHERE BookID = '" & BookID & "'"
        DBAdapter = New OleDbDataAdapter(SQLString, DBConnection)
        DBDataSet = New DataSet
        DBAdapter.Fill(DBDataSet)
        Return DBDataSet
    End Function
 
    Function Delete_Book(ByVal BookID As String)
        Dim DBConnection As OleDbConnection
        Dim DBAdapter As OleDbDataAdapter
        Dim DBDataSet As DataSet
        Dim SQLString As String
        Dim DBCommandBuilder As OleDbCommandBuilder
        DBConnection = New OleDbConnection( _
          "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\BooksDB.mdb")
        SQLString = "SELECT * FROM Books WHERE BookID = '" & BookID & "'"
        DBAdapter = New OleDbDataAdapter(SQLString, DBConnection)
        DBDataSet = New DataSet
        DBAdapter.Fill(DBDataSet)
        DBDataSet.Tables(0).Rows(0).Delete()
        DBCommandBuilder = New OleDbCommandBuilder(DBAdapter)
        DBAdapter.Update(DBDataSet)
 
    End Function
End Class
 
**************************************** default.aspx**************
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
   <asp:ObjectDataSource id="BookIDSource" Runat="Server"
  TypeName="DSClass"
  SelectMethod="Select_BookIDs"/>
 
<asp:DropDownList id="DropList" DataSourceID="BookIDSource" Runat="Server"
  DataTextField="BookID"
  DataValueField="BookID"
  AutoPostBack="True"/>
  
  <asp:ObjectDataSource id="BookSource" Runat="Server"
  TypeName="DSClass"
  SelectMethod="Select_Book"
  DeleteMethod="Delete_Book">
  <SelectParameters>
      <asp:ControlParameter ControlID="DropList" Name="BookID" PropertyName="SelectedValue"
          Type="String" />
  </SelectParameters>
      <DeleteParameters>
          <asp:Parameter Name="BookID" Type="String" />
      </DeleteParameters>
</asp:ObjectDataSource>
 
<asp:DetailsView id="BookView" DataSourceID="BookSource" Runat="Server"
  AutoGenerateEditButton="True"
  AutoGenerateDeleteButton="True"
  AutoGenerateInsertButton="True"
    RowStyle-VerticalAlign="Top"
    RowStyle-Font-Size="10pt">
    <RowStyle Font-Size="10pt" VerticalAlign="Top" />
</asp:DetailsView>
    </div>
    </form>
</body>
</html>
Attachments:
 
Norow.GIF (64 KB) (File Type Details) 
Norow
Norow
 
[+][-]04.18.2008 at 06:08AM PDT, ID: 21385378

Assisted solutions are selected by the member who asked the question as a comment that contributed to their question's solution.

Start your 7-day free trial to view this Assisted Solution or ask the Experts your question.

 
[+][-]04.18.2008 at 06:20AM PDT, ID: 21385454

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:21AM PDT, ID: 21385471

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:25AM PDT, ID: 21385505

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:29AM PDT, ID: 21385526

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:33AM PDT, ID: 21385558

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:50AM PDT, ID: 21385696

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:54AM PDT, ID: 21385736

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 06:56AM PDT, ID: 21385764

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 07:03AM PDT, ID: 21385816

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 07:13AM PDT, ID: 21385922

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 08:22AM PDT, ID: 21386606

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.18.2008 at 09:00AM PDT, ID: 21386976

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.21.2008 at 12:25AM PDT, ID: 21399324

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04.21.2008 at 01:32AM PDT, ID: 21399553

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04.22.2008 at 02:28AM PDT, ID: 21409262

View this solution now by starting your 7-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zones: Visual Studio .NET 2005, Programming for ASP.NET, ADO.Net Class Library
Tags: vb.net 2005(Web programming)
Sign Up Now!
Solution Provided By: fosiul01
Participating Experts: 1
Solution Grade: A
 
 
 
Loading Advertisement...
20080716-EE-VQP-32 / EE_QW_2_20070628