SetFocusedIndexSync Method (ImageViewer)

In This Topic

Sets a new value of the FocusedIndex property synchronously.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Sub SetFocusedIndexSync( _
   ByVal newFocusedIndex As Integer _
)

public void SetFocusedIndexSync( 
   int newFocusedIndex
)

public: void SetFocusedIndexSync( 
   int newFocusedIndex
)

public:
void SetFocusedIndexSync( 
   int newFocusedIndex
)

Parameters

newFocusedIndex: New value of the FocusedIndex property.

Remarks

This method sets the value of the FocusedIndex property and waits while new image will be loaded in the viewer.

Example

This example shows how to start animation in ImageViewer if image viewer uses images from Images property.

VB.NET

''' <summary>
''' Shows animation in image viewer.
''' </summary>
''' <param name="viewer">An image viewer.</param>
''' <param name="delay">The animation delay in milliseconds.</param>
Private Sub ShowAnimation(viewer As Vintasoft.Imaging.UI.ImageViewer, delay As Integer)
    ' for each image in image collection of image viewer
    For i As Integer = 0 To viewer.Images.Count - 1
        ' change image in image viewer
        viewer.SetFocusedIndexSync(i)
        ' sleep for a while
        System.Threading.Thread.Sleep(delay)
    Next
End Sub

/// <summary>
/// Shows animation in image viewer.
/// </summary>
/// <param name="viewer">An image viewer.</param>
/// <param name="delay">The animation delay in milliseconds.</param>
private void ShowAnimation(Vintasoft.Imaging.UI.ImageViewer viewer, int delay)
{
    // for each image in image collection of image viewer
    for (int i = 0; i < viewer.Images.Count; i++)
    {
        // change image in image viewer
        viewer.SetFocusedIndexSync(i);
        // sleep for a while
        System.Threading.Thread.Sleep(delay);
    }
}

Requirements

Target Platforms: .NET 6; .NET 5; .NET Core 3.1; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

ImageViewer Class
ImageViewer Members
Image Property

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