ObjectListView Set first displayed item - c#

Is it possible to programmatically set the first displayed item in a BrightIdeasSoftware ObjectListView?
In other words I want to scroll down the list to make another item than the first in the list displayed at the top.
I cant't find any member that does so.

Found it:
objectListView1.TopItemIndex = n;

Related

How to make a listbox in c# not duplicate items on button click?

Well, i'm using ASP.NET c# listbox. I also have a button, the idea is the following: whenever I click the button an item x has to be shown in the listbox. However, I click the button many times, and instead of replacing the x value in the list for the new value (pretend it's y), it shows the following:
x
y
The expected result would be:
y
I mean, i don't want values to be on top of eachother, just one at a time.
You should be having a code behind file where the selected items (selected by clicking the button) should be getting added to the listBox object.
When you run a loop to add items to this listBox object, use the Contains method to check if the listBox object already contains the current item. Add only if it does not contain.
At code behind :
Before that you need to create list and store all the listbox value. if listbox doesn't have value then keep list as null.
Every time you need to check whether the list contain the value or not if list contain value then you don't need to add, if not contain then you need to add.
in Jquery :
on button click first get all the listbox list item value and check that in that list whether that list contain the value or not which you want to add.
May be this is help full for you.

select listViewItems in listView as text

In ListView there are 3 option of SelectionMode
1.Single - only one item can be selected.
2.Multiple - you can select muliple items, one after the other.
3.Extended - You can select multiple items and used Ctrl or Shift key.
I'm need to select some items in ListView as text in TextBox.
i.e. press with the left button of mouse, until the mouse is up.
and mark all between items as Selected.
How can I make it?
Thanks
1.Single: SelectionMode="Single"?
2 Mutiple : i think use binding
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3
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Or You try this line SelectionMode="Muti..."
Firstly, the porpose of this problem is to display listView of TextBlocks for allow use ItemsSource of ListView for display text for several reasone.
behind each textBlock that contains a word, there are in the ViewModel class named Word. that contains the text of the word and property of IsSelected.
I solve this problem, by adding 3 EventSetter event to the ListViewItem,
1.PreviewMouseLeftDown
2.MouseEnter
3.PreviewMouseLeftUp
and adding a flag of IsInSelection, and two object Word that present the control in the view,1.firstSelectionWord, 2.lastSelectionWord.
and, when the first event raise, i update the current control to be Selected.
and set a flag IsInSelection to true. and set firstSelectionWord = lastSelectionWord = current word pressed.
in the MouseEnter event i checked if IsInSelection is true, and them mark also the current control to Selected=true. set the lastSelectionWord = current word pressed.
and call a method that mark all the Word between them as selected.
in the PreviewMouseLeftUp function, i set the IsInSelection = false.

Adding checkbox controls to list box

I'm new to .NET environment and just a student.
I'm working on User Management. I want to assign multiple roles to one user. For this purpose I've created list box which contains a list of roles from database.
lbRoles.Items.Add(readerRole["RoleName"].ToString());
I just need a check box with each item. Please suggest how to add a checkbox with each item.
I did tried
lbRoles.Controls.Add(checkBox);
lbRoles.Items.Add(readerRole["RoleName"].ToString());
But it was not helpful. I did google but no result :(
There is the CheckedListBox class, its very simple and does exactly what you want. :)
Displays a ListBox in which a check box is displayed to the left of each item.
Instead of using a ListBox, use a ListView instead and set ListView.Checkboxes to true.
This will place a CheckBox next to each item in the ListView, and your users can select specific items in the ListView by clicking the checkboxes, then get the selected items using ListView.SelectedItems.

C# Combobox Displaying Blank Items

I'm coding a combobox in C# and for some reason the items in the drop down don't have text. When I have selected an item, it is shown in the combo box text field (the drop down list is always blank whenever I click the drop down button). The datasource seems bound properly because the proper values are being returned when I select items, and the size of the drop down list will change depending on how many items the datasource has. Everything looks fine except for the fact that it seems like my drop down is populated with a bunch of empty strings, which it clearly isn't since as soon as an item is selected the proper text will display.
This is the relevant code:
if (list.Count > 0)
{
cboCustomers.DisplayMember = "Name";
cboCustomers.DataSource = list;
cboCustomers.ValueMember = "ID";
cboCustomers.SelectedIndex = 0;
}
I have looked for an answer to this but can't find it anywhere...I'm sure it's something really simple, but I can't figure it out. The closest problem I found had an answer suggested to set the display member before the data source, which clearly didn't work.
The list is populated from a database query. This will run on keyUp, the idea is that the list is populated as the person is typing based on the info given. So if I wrote 'S' I'd get a combobox with a dropdown that had all the clients starting with 'S'.
Given you don't have any anomalies in your binding, you are probably being affected by DrawMode property of your ComboBox, which may be set to OwnerDrawFixed or OwnerDrawVariable. Set it to Normal and things should get better.
as soon as an item is selected the proper text will display.
A foreground color the same as the background color will produce the same results you are seeing.

listview c#: how to add items to columns other than the first

My question is an exact duplicate of this:
"To add items to column 1 in my listView control (Winform) I'm using listView1.Items.Add, this works fine but how do I add items to columns 2 and 3 etc? "
Lots of similar Q&A elsewhere, but none of them talk about how to add items using the WinForms interactive listView builder as opposed to coding it directly. I know how to code it, but since you can add items to the first column using the builder, I assume there must be a way to do it for the other columns.
Right-click on the ListView and select "Edit Items..." to get the ListViewItem Collection Editor.
Select a ListViewItem (or click Add to add one and then select it). In the properties pane find SubItems in the Data category. Click on the "..." button to open the ListViewSubItem Collection Editor and you can add sub-items, which appear in the columns after the first.
You need to set the Text property of your ListViewItems and ListViewSubItems if you want to see anything.
I think (not sure) that most simple way is to add array of strings, and the list view knows the column according to the array index.

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