How to get index of selected item in ListBox?
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How to get index of selected item in ListBox?
If you want to obtain the index position of an item that is currently selected in the ListBox, instead of the item itself, use the SelectedIndex property. In addition, you can use the SelectedIndices property if you want to obtain the index positions of all selected items in a multiple-selection ListBox.
What property is used to return the index of a selected item in a ListBox?
MultiExtended (which indicates a multiple-selection ListBox) and multiple items are selected in the list, this property can return the index to any selected item. To retrieve a collection containing the indexes of all selected items in a multiple-selection ListBox, use the SelectedIndices property.
What property should be used to determine the number of items in a ListBox?
Count Property (System.
Which method of a listbox will remove just one item at a time?
Items. RemoveAt is the method of listbox will remove just one item at a time.
What is selected index?
selectedIndex is a long that reflects the index of the first or last selected element, depending on the value of multiple . The value -1 indicates that no element is selected.
What is the method used to look for an index of a given string in a ListBox or combobox?
The FindString method is used to find a string or substring in a ListBox. The following code snippet finds a string in a ListBox and selects it if found: private void FindItemButton_Click(object sender, EventArgs e)
How do you add and delete items to a ListBox control explain?
Now drag and drop one TextBox, an Add Button and a Delete Button control on the form. When a user enters some text into a TextBox and clicks on the add Button, text will be shown in the ListBox. After that, select text from the ListBox and click on the Delete Button to remove the text from the ListBox control.
Which property is used to return the index value of the selected item?
The Select selectedIndex property in HTML DOM is used to set or return the index of the selected option in a drop-down list.
How do I select certain items?
To select items that are not next to each other, follow these steps:
- Select the first item that you want. For example, select some text.
- Press and hold CTRL.
- Select the next item that you want. Important Be sure to press and hold CTRL while you select the next item that you want to include in the selection.
How do I get the index of a selected item in listbox?
If the SelectionMode property of the ListBox is set to either SelectionMode.MultiSimple or SelectionMode.MultiExtended (which indicates a multiple-selection ListBox) and multiple items are selected in the list, this property can return the index to any selected item.
How do I add a selected field to a listboxitem?
One way you can do this is to add a Selected field to your data object. Then you need to overide the default listboxitem style and bind the isselected property to the Selected property in your object. Then you just need to go through your data items and update the Selected value.
What is a-1 value in listbox?
Gets or sets the zero-based index of the currently selected item in a ListBox. A zero-based index of the currently selected item. A value of negative one (-1) is returned if no item is selected. The assigned value is less than -1 or greater than or equal to the item count.
What is a zero-based index of the currently selected item?
A zero-based index of the currently selected item. A value of negative one (-1) is returned if no item is selected. The assigned value is less than -1 or greater than or equal to the item count. The SelectionMode property is set to None.
