StackPanel.GetInsertionIndexes(Point, Int32, Int32) Method

Definition

Namespace:

Microsoft.UI.Xaml.Controls

Returns the index values of the items that the specified point is between.

public:
 virtual void GetInsertionIndexes(Point position, [Out] int & first, [Out] int & second) = GetInsertionIndexes;

void GetInsertionIndexes(Point const& position, [Out] int & first, [Out] int & second);

public void GetInsertionIndexes(Point position, out int first, out int second);

Public Sub GetInsertionIndexes (position As Point, ByRef first As Integer, ByRef second As Integer)

Parameters

position

Point

The point for which to get insertion indexes.

first

Int32

int

The index of the item before the specified point.

second

Int32

int

The index of the item after the specified point.

Implements

M:Microsoft.UI.Xaml.Controls.IInsertionPanel.GetInsertionIndexes(Windows.Foundation.Point,System.Int32@,System.Int32@) M:Microsoft.UI.Xaml.Controls.IInsertionPanel.GetInsertionIndexes(Windows.Foundation.Point,int@,int@)

Remarks

Call this method when handling a DragOver event to return the indices of the two items between which the DragOver is happening and where a potential drop and insertion would happen.

Version compatibility

The GetInsertionIndexes method is not available prior to Windows 10, version 1607. If your app’s 'minimum platform version' setting in Microsoft Visual Studio is less than the 'introduced version' shown in the Requirements block later in this page, you must design and test your app to account for this. For more info, see Version adaptive code.

To avoid exceptions when your app runs on previous versions of Windows 10, do not call this method without first performing a runtime check. This example shows how to use the ApiInformation class to check for the presence of this method before you use it.

<StackPanel AllowDrop="True" DragOver="StackPanel_DragOver">

private void StackPanel_DragOver(object sender, DragEventArgs e)
{
    if (ApiInformation.IsMethodPresent("Windows.UI.Xaml.Controls.StackPanel", "GetInsertionIndexes"))
    {
        StackPanel stackPanel = sender as StackPanel;
        if (stackPanel != null)
        {
            int preceedingIndex;
            int subsequentIndex;
            stackPanel.GetInsertionIndexes(e.GetPosition(stackPanel), out preceedingIndex, out subsequentIndex);
        }
    }
}