Handle click on a sub-item of ListView in WinForms/WPF

Handle click on a sub-item of ListView in WinForms/WPF

To handle a click on a sub-item of a ListView in WinForms or WPF, you can handle the MouseClick or MouseDoubleClick event of the ListView control, and then use the HitTest method of the ListView to determine which sub-item was clicked.

Here's an example of how you might handle a click on a sub-item of a ListView in WinForms:

private void listView1_MouseDoubleClick(object sender, MouseEventArgs e) { ListViewHitTestInfo hitTest = listView1.HitTest(e.Location); if (hitTest.SubItem != null) { string text = hitTest.SubItem.Text; // Do something with the sub-item text } }

In this example, we handle the MouseDoubleClick event of the ListView control. We then call the HitTest method of the ListView and pass in the mouse position to determine which sub-item was clicked. If the SubItem property of the ListViewHitTestInfo object is not null, we retrieve the text of the sub-item and perform some action with it.

Here's an example of how you might handle a click on a sub-item of a ListView in WPF:

private void listView1_MouseDoubleClick(object sender, MouseButtonEventArgs e) { ListViewItem item = sender as ListViewItem; if (item != null) { ListView listView = ItemsControl.ItemsControlFromItemContainer(item) as ListView; GridView gridView = listView.View as GridView; GridViewColumn column = gridView.Columns[1]; string text = (item.Content as DataRowView)[column.DisplayMemberBinding.Path.Path].ToString(); // Do something with the sub-item text } }

In this example, we handle the MouseDoubleClick event of the ListViewItem control, which is the control that represents each item in the ListView. We then retrieve the ListView control and the GridView control that define the columns of the ListView. We retrieve the GridViewColumn that corresponds to the sub-item that was clicked, and then retrieve the text of the sub-item from the DataRowView of the clicked item. We then perform some action with the sub-item text.

Examples

  1. "Handle click on a sub-item in WinForms ListView"

    // Subscribe to ListView Click event private void listView1_Click(object sender, EventArgs e) { ListView listView = (ListView)sender; ListViewItem listViewItem = listView.SelectedItems[0]; ListViewItem.ListViewSubItem subItem = listViewItem.GetSubItemAt(e.Location.X, e.Location.Y); if (subItem != null) { // Handle click on sub-item MessageBox.Show($"Clicked on sub-item: {subItem.Text}"); } }

    Description: Uses the Click event of the ListView to determine the sub-item clicked based on the mouse coordinates.

  2. "WinForms ListView sub-item click using MouseClick event"

    // Subscribe to ListView MouseClick event private void listView1_MouseClick(object sender, MouseEventArgs e) { ListView listView = (ListView)sender; ListViewItem listViewItem = listView.GetItemAt(e.X, e.Y); ListViewItem.ListViewSubItem subItem = listViewItem?.GetSubItemAt(e.X - listViewItem.Position.X, e.Y - listViewItem.Position.Y); if (subItem != null) { // Handle click on sub-item MessageBox.Show($"Clicked on sub-item: {subItem.Text}"); } }

    Description: Utilizes the MouseClick event to determine the clicked sub-item in a WinForms ListView.

WPF:

  1. "Handle click on a sub-item in WPF ListView"

    <ListView Name="listView" MouseLeftButtonUp="ListView_MouseLeftButtonUp"> <!-- Define columns and data --> </ListView> 
    // Handle ListView MouseLeftButtonUp event private void ListView_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { ListView listView = (ListView)sender; ListViewItem listViewItem = listView.SelectedItem as ListViewItem; if (listViewItem != null) { // Retrieve clicked sub-item information ListViewSubItem subItem = GetClickedSubItem(listView, e.GetPosition(listViewItem)); if (subItem != null) { // Handle click on sub-item MessageBox.Show($"Clicked on sub-item: {subItem.Text}"); } } } 
    // Helper method to get clicked sub-item in WPF ListView private ListViewSubItem GetClickedSubItem(ListView listView, Point clickPosition) { HitTestResult hitTest = VisualTreeHelper.HitTest(listView, clickPosition); DependencyObject target = hitTest?.VisualHit; while (target != null && !(target is GridViewRowPresenter)) { target = VisualTreeHelper.GetParent(target); } if (target is GridViewRowPresenter rowPresenter) { int columnIndex = rowPresenter.Columns.ToList().FindIndex(column => clickPosition.X >= column.ActualWidth && clickPosition.X <= column.ActualWidth + column.Width); if (columnIndex >= 0 && columnIndex < listView.Items.Count) { // Return the clicked sub-item return new ListViewSubItem(listView.Items[columnIndex], listView.Columns[columnIndex]); } } return null; }

    Description: Handles the MouseLeftButtonUp event in WPF to determine the clicked sub-item by utilizing a helper method (GetClickedSubItem) to navigate the visual tree.

  2. "WPF ListView sub-item click using PreviewMouseLeftButtonUp event"

    <ListView Name="listView" PreviewMouseLeftButtonUp="ListView_PreviewMouseLeftButtonUp"> <!-- Define columns and data --> </ListView> 
    // Handle ListView PreviewMouseLeftButtonUp event private void ListView_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e) { ListView listView = (ListView)sender; ListViewItem listViewItem = listView.SelectedItem as ListViewItem; if (listViewItem != null) { // Retrieve clicked sub-item information ListViewSubItem subItem = GetClickedSubItem(listView, e.GetPosition(listViewItem)); if (subItem != null) { // Handle click on sub-item MessageBox.Show($"Clicked on sub-item: {subItem.Text}"); } } }

    Description: Uses the PreviewMouseLeftButtonUp event in WPF to handle the click on a sub-item in a ListView.

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