ListView problem: it does not Jump to the selected item - c#

Ok I am saying lsvAvailable.Items[index].Selected = true;
and HideSelection is false so it shows the gray back color on the selected item, which is what I want .. but if the found item is somewhere down the list so I need scrolling to SEE it. it does Not JUMP to that item...and still I need to ba able to continue typing ( let's say I am typing in a text box like a search box and it is showing the item in the listView)

Call the ListViewItem.EnsureVisible method:
lsvAvailable.Items[index].EnsureVisible();

Related

Selecting a checked list box item control in coded UI when the text contained within will not be known at runtime

Is there a method of going about selecting items from a checked list box in coded ui when the exact text contained within the list box item will not be known until runtime? Perhaps a method of selecting a list box item at a certain index?..
I've tried using click list box at point (x,y) but whenever a list item is in its place it throws and error because it is in the way, And i cant try clicking the list box item itself as the full text it displays is a randomly generated ID and i am not sure if there is another method of finding items.
Another possibility would be passing in the text of the list box item to select at run time?
This is currently what I am trying to do in order to grab the control although it's throwing errors due to type mismatch
Managed to get it working with the following:
WinList uIItemList = UIMainwindowWindow.UIClbxSearchResultsWindow.UIClbxSearchResultsList;
WinCheckBox listItem = (WinCheckBox)uIItemList.Items[0];
listItem.Checked = true;
Just set the SelectedIndex property of the list box after its been populated. The below very simple example sets it to item 3 ( Zero based index)
lstBox.SelectedIndex = 2;
As per your comments, the same can still be achieved on checked list box with the below.
chkListBox.SelectedIndex = 2;
chkListBox.SetItemCheckState(2, CheckState.Checked);
Hope that helps.

list view selection mode none in windows form applications

i am working on windows form application ..i have a list view.
in the list view some time i will select some row then i will click add button .that time selected rows will add to list view.
after that i want to make my listview selection mode none so i wrote code like this
List_Item.Select = Nothing ..
but this code throwing error? how i can make my list view selection mode none?
any help is very appreciable.thanks in advance
loop every item and set the selected field to false
For Each item As ListViewItem In Me.List_Item.Items
item.Selected = false
Next

How do I properly select a row in ObjectListView?

I'm using ObjectListView with C# and .Net 4.0. I wrote code that reloads the listview and then re-selects the last selected index.
The re-selection code is quite simple:
olvListView.SelectedIndex = i;
This appears to work, because the item is selected. However, if I then click the up or down arrow, the selection jumps up to the second row (no matter what row I selected), suggesting that the selection was actually set on the first row, no matter what was the value of i.
What am I doing wrong here?
The underlying ListView Control distinguishes between 'selection' and 'focus'.
olvListView.SelectedIndex = i; changes the selection but not the focus. But the focused row is the one that the keyboard input relates to.
Either change the focus the as well
olvListView.SelectedIndex = i;
olvListView.FocusedItem = olvListView.SelectedItems[0];
or call
olvListView.SelectObject(aModelObject);
The second solution would be the preferred way to select an item when working with OLV, however you say you "wrote code that reloads the listview", so the reference to the original item is probably different. Maybe you should just refresh the items that changed, instead of reloading everything. That way you could preserve the selection.
Example if your olv have datasource from "class_z.list" and foreach have only one result.
foreach(class_z a in class_z.list.Where(x=>x.id==id_value))
{
olv.SelectedObject = z;
}

Set focus in Listbox in MVVM pattern

I am trying to set a focus on the first Item of listBox. I am binding the value to listbox, contaning a textbox by a onpropertychange method and I want to set focus in the first item. how can I achieve that?
you can set focus on the first item with the following:
listBox1.Items[0].Focused = true;
you may also want to have the item that is focused to be selected, if you do then:
listBox1.Items[0].Selected = true;
Just remember the [0] above means the first index. [1] would be the second and so on.

selection issue in listview or TreeView

Hello i have a list view control,
While the form is being loaded i fill the list, i have aprrox. say 100+ items.
While filling i check some parameters and decide which item/row need to be selected.
i set the Selected property to true... refer the code below:
some lines here .....
ListViewItem listViewItem = new ListViewItem("COL1");
listViewItem.SubItems.Add("COL2");
check for some condition and then
listViewItem.Selected = true;
this.m_lstViewCtrl.Items.Add(listViewItem);
This does select the item, there are no issues with it...
however, say the ctrl is sized to see onlu say some 15 items, but the selection is say some 35th item.... currently the scroll bar appears the item is selected but i have to scroll to see what was selected?
is it possible to scroll to the selected item so that is selection is clearly visible...
Will the same apply for a Treeview?
Use the EnsureVisible property on the ListViewItem.
UPDATE: So, your code would be as follows:
listViewItem.Selected = true;
listViewItem.EnsureVisible();
this.m_lstViewCtrl.Items.Add(listViewItem);

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