CODEWITHSUNDEEP
c#visual-studio-2010listview
3D-kreativ
3D-kreativ

Reputation: 9299

Creating columns in listView and add items

I'm learning how to use the listView in a windowsForm and I have some problems that I hope to solve here. The first thing is when I'm creating the columns with the code below:

private void initListView()
    {
        // Add columns
        lvRegAnimals.Columns.Add("Id", -3,HorizontalAlignment.Left);
        lvRegAnimals.Columns.Add("Name", -3, HorizontalAlignment.Left);
        lvRegAnimals.Columns.Add("Age", -3, HorizontalAlignment.Left);
    }

When I run the program, the name of the columns are not visible, they are all at the left corner, and I have to "drag" them to be able to read the text. What have I done wrong?

And finally I wonder how I add items to the columns. Do I first create a object like 

ListViewItem item1 = new ListViewItem(???);
item1.SubItems.Add("text");

Is each listViewItem objects a column or a row? How do I add rows of info? Preciate some help! Thanks!

Upvotes: 21

Views: 183600

Answers (4)

U Zay Yar
U Zay Yar

Reputation: 11

            listView1.View = View.Details;
        listView1.Columns.Add("Target No.", 83, HorizontalAlignment.Center);
        listView1.Columns.Add("   Range   ", 100, HorizontalAlignment.Center);
        listView1.Columns.Add(" Azimuth ", 100, HorizontalAlignment.Center);

i also had same problem .. i drag column to left .. but now ok .. so let's say i have 283*196 size of listview ..... We declared in the column width -2 for auto width .. For fitting in the listview ,we can divide listview width into 3 parts (83,100,100) ...

Upvotes: 0

Navin Pandit
Navin Pandit

Reputation: 179

You need to set property for the control:

listView1.View = View.Details;

Upvotes: 6

IamBatman
IamBatman

Reputation: 1015

I didn't see anyone answer this correctly. So I'm posting it here. In order to get columns to show up you need to specify the following line.

lvRegAnimals.View = View.Details;

And then add your columns after that.

lvRegAnimals.Columns.Add("Id", -2, HorizontalAlignment.Left);
lvRegAnimals.Columns.Add("Name", -2, HorizontalAlignment.Left);
lvRegAnimals.Columns.Add("Age", -2, HorizontalAlignment.Left);

Hope this helps anyone else looking for this answer in the future.

Upvotes: 42

Tom
Tom

Reputation: 2390

Your first problem is that you are passing -3 to the 2nd parameter of Columns.Add. It needs to be -2 for it to auto-size the column. Source: http://msdn.microsoft.com/en-us/library/system.windows.forms.listview.columns.aspx (look at the comments on the code example at the bottom)

private void initListView()
{
    // Add columns
    lvRegAnimals.Columns.Add("Id", -2,HorizontalAlignment.Left);
    lvRegAnimals.Columns.Add("Name", -2, HorizontalAlignment.Left);
    lvRegAnimals.Columns.Add("Age", -2, HorizontalAlignment.Left);
}

You can also use the other overload, Add(string). E.g: 

lvRegAnimals.Columns.Add("Id");
lvRegAnimals.Columns.Add("Name");
lvRegAnimals.Columns.Add("Age");

Reference for more overloads: http://msdn.microsoft.com/en-us/library/system.windows.forms.listview.columnheadercollection.aspx

Second, to add items to the ListView, you need to create instances of ListViewItem and add them to the listView's Items collection. You will need to use the string[] constructor. 

var item1 = new ListViewItem(new[] {"id123", "Tom", "24"});
var item2 = new ListViewItem(new[] {person.Id, person.Name, person.Age});
lvRegAnimals.Items.Add(item1);
lvRegAnimals.Items.Add(item2);

You can also store objects in the item's Tag property. 

item2.Tag = person;

And then you can extract it

var person = item2.Tag as Person;

Let me know if you have any questions and I hope this helps!

Upvotes: 47

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