Jan 18, 2012 - A quick and easy way to support in-line (subitems) editing on the ListView control in.NET.
Introduction The inner-workings of a ListView can be somewhat complicated to grasp for an inexperienced programmer. The truth is, it is just a complicated control to fathom. All is not lost though, because once you know what makes a ListView tick, there is literally no project that you can think of not needing a Listview.
It is very powerful, and very versatile, as you will see in today's article. I also battled with the ListView in the beginning of my programming career, so do not feel alone! Today I will demonstrate practically how the ListView works, so sit back and relax, because it might end up being quite a lengthy article! What Is a ListView? The ListView is simply a list control that can also display images.
If you look at normal list controls such as the ListBox and the Combobox, they can mainly show only text. Yes, you can include image functionality in either of them, but that is very complicated and not really part of this article. Another benefit of the ListView is that it has five different ways of presenting data. These are called view modes, which I will cover throughout this article.
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Is a link to all the ListView's methods and properties. Remember, when you do not know something, is the best place to look for information. The ListView has one caveat: It works with an ImageList control. The ImageList control is simply (as its name implies) a list of images.
It is an invisible control, in other words, you will not see it on the form during run time. Its sole purpose is to store a list of images, which can then be use with a ListView or picturebox, to name a few. To get a better understanding of how the ListView works, let's create an application that makes use of ListViews. Our Sample Project Open Visual Studio and create a new Windows Forms VB.NET project. Design it to resemble Figure 1.
The topic for this app is the 12 signs of the Zodiac. If you have never heard that term before, I suggest having a look. Figure 1 - Our design In case Figure 1 is a bit confusing, put the following controls on your form and set the following properties: Control Property Setting ImageList Images Add any Large pictures. I have used the signs of the Zodiac. Try to make the pictures the same sizes. ImageList Images Add any small pictures.
I have used the signs of the Zodiac. Try to make the pictures the same sizes. ListView View LargeIcon LargeImageList ImageList1 - the Large Pictures ListView View Details ListyView View SmallIcon SmallImageList ImageList2 - the Small Pictures ListView View List ListView View Tiles Button Text ListView1 Button Text ListView2 Button Text ListView3 Button Text ListView4 Button Text ListView5 We will use the buttons to show each ListView's content. If you do not have any pictures that you can use, I am including my pictures I have used both small and large versions of the Zodiac signs. Once you are happy with your design, we can proceed to the coding. Code In this program you will make use of arrays to store each zodiac sign, and each starting date and ending date. You will use these arrays to populate the desired ListView with data.
Let's create the arrays now. Add the following code in the General Declaration section: Private arrZodiac(11) As String 'Array To Hold Zodiac Signs Private arrFrom(11) As String 'Each Zodiac Sign's Starting Date Private arrTo(11) As String 'Each Zodiac Sign's Ending Date I mentioned 12 signs, now why are there only 11 elements? Well, it is because arrays start counting at 0.
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In order to make these arrays work, we have to give them some data. The optimal place to add elements to each of these three arrays would be the Form Load event. Double click on the form - this will open up the code window with your cursor placed inside the FormLoad event. Comments. Good Article Posted by Zeyad Ahmed on 12:39pm i like this article it helped me lot. Extras Needed Posted by Yusuf on 07:05pm Thank you for your posting!
I need some extra information about listviews. I try to use a listview for providing feedback to the user while a series of sub procedures running behind.
However, I cannot access the ListView1 at all, cannot change or update any item. I want to use a different sub procedure for updating the listview in the same Form class but it is not possible to access it through Me.ListView1. Do you have an idea how it can be done?. Engineer Posted by shang on 04:44pm This article is very clear and well organizes.
I enjoyed it a lot. Errors Posted by Tonet on 02:36pm The system is running but the controls are not working, especially the buttons.
What could be the solution or wrong with that?. Just saying. Posted by tonet on 11:32am thank you for this, I will try this codes. You must have javascript enabled in order to post comments.
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