473,804 Members | 3,178 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

C# App: ListView problem

2 New Member
Hello,

I am working on a task in which I have to read line by line from a text file and add it to listview as an item. Since the file is too large (around 10K-15K lines), it was taking hell lot time to populate the ListView. So I used List<ListViewIt em> as well I used VirtualListView property. Now it works absolutely fine.

Now my problem is, I have given an option to user using which he/she can select a file from Open File Dialog.

When user opens the file for the first time, everything goes fine. When user tries to open another file which is having different number of lines, ListView.Retrie veVirtualItem event fails giving some Array out of bound exception for e.ItemIndex in ListView.Retrie veVirtualItem handler. This failure happens especially when I try to scroll in a ListView.

Somebody...plea se help me out...it is very urgent.

Thanks in advance...!
Dec 20 '07 #1
2 1404
nateraaaa
663 Recognized Expert Contributor
Do you set the ListView to null when a user selects a new file then repopulate the ListView with the new data?

Nathan
Dec 20 '07 #2
milindsm
2 New Member
Do you set the ListView to null when a user selects a new file then repopulate the ListView with the new data?

Nathan
no....I am not setting it to null, I am just clearing it off. Let me try setting it to null as well....
Dec 21 '07 #3

Sign in to post your reply or Sign up for a free account.

Similar topics

0
1427
by: Sérgio Almeida | last post by:
Greetings I have a problem using listview control. Well, I belive that this is not realy a problem, but it's consuming me precious time. Here is the scenario (an example of my problem). I have a SqlServer CE table named students that has 2 fields: students name and grade.
6
2887
by: Dan | last post by:
I've created a pocketpc app which has a startup form containing a listview. The form creates an object which in turn creates a System.Threading.Timer. It keeps track of the Timer state using a TimerState object similar to the example in the System.Threading.Timer documentation. The method which handles the timer events, among other things, periodically calls a method in this TimerState object which raises an event to the startup form,...
3
9320
by: MikeY | last post by:
Hopefully someone can help me on this. I am using C#, making Windows forms. I have created a listView with checkbox's. I have enabled the checkboxes under the properties, and all the data, checkbox's and icons are displayed as they are meant to be. My problem is this, I am trying to achieve the same results as I get with CheckListBox(s), where I am able to select (Check-mark) various checkboxs items and able to alter the data. I do...
4
3862
by: firefox | last post by:
Hola Foro!, tengo una rutina que permite agregar varios elementos o items de una sola vez en un ListView. Lo que sucede es que en el momento que se añaden los items al ListView se pone todo blanco, cuando se terminan de agregar los items vuelve a su estado normal. Como impido que esto suceda ?. Gracias Mil.
4
10858
by: Pucca | last post by:
How can I tell a mouse right clicks over a listview item that's in a container panel. I only want to display a popup menu if the user right click the mouse over an item on the Listview. I don't not want to display this menu if a node selected on the listview but user right click over the empty space of the panel that contain the listview. The problem here is when I use the Listview's Click Event, I don't have ways to verify if the...
3
5413
by: Martin Panggabean | last post by:
Hello All, I've kind a logic problem ... I want to fill the listView control in VB.NET with data in my mySql table using Datareader object component. But It seems that the way of how listView being used is quite different from usual column-row component like Grid component. If you kind a familiar using listView, u must have known what i'm talking about. Here is some example i took from MSDN :...
12
3415
by: garyusenet | last post by:
I have had no replies to my previous post so perhaps I didn't write it good enough. Please excuse new thread but i wanted to break from the last thread hopefully this thread will be better. Very simple. I would like to create listviewitem's for display in a listview control. The listview items need to contain properties from Internet Explorer windows i've managed to collect into an arraylist.
4
4523
by: Brian Gaze | last post by:
I have created a ListView control and have bound this to a datasource. Within the ItemTemplate of the ListView I have added another ListViewControl which is databound in the code behind. The idea is that when clicking on the "Show details" button the ListView for the appropriate row binds in the codebehind and displays the detail data for the selected row. I did something similar with a gridview control previously, but want to be able to...
2
3368
by: =?Utf-8?B?UGhpbGlw?= | last post by:
I am attempting to insert a simple record with LinqDataSource from a ListView, however I always get a message saying "....LinqDataSource 'dataSource' has no values to insert. Check that the 'values' dictionary contains values...." I am using a ListView with a DataSourceID of a LinqDataSource. When a new row icon is clicked....the ListView properly enters into the InsertItemTemplate....however when the ImageButton with a CommandName of...
0
9706
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
10583
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10337
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
7622
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6854
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5525
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
5654
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
4301
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
3822
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.