About Slider?

Question

Look at![RTNXM0Y2TI2L]FVY$3RUYI9](https://learn.microsoft.com/api/attachments/e4a602f6-a689-4fda-807f-2e6ab9327563?platform=QnA)

if I click the area of 'a',the thumb would 'jump' to my point and can only one forward 'jump',

I want to:

It would directly go at my point and can smoothly move towards all directions if I still Press the left button.

Thanks for any answers.

Answer 1

Hi,@尼龟 杰.I have not been able to successfully reproduce your environment with your code. You could refer to the code below to see if it meets your needs.

Xaml:

  <Slider x:Name="slider"
                PreviewMouseLeftButtonDown="Slider_PreviewMouseLeftButtonDown"
                PreviewMouseMove="Slider_PreviewMouseMove"
                PreviewMouseLeftButtonUp="Slider_PreviewMouseLeftButtonUp" />

Codebedhind:

   
        private bool isDragging;
        private void Slider_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            slider.CaptureMouse();
            double mousePosition = e.GetPosition(slider).X;
            double value = mousePosition / slider.ActualWidth * (slider.Maximum - slider.Minimum) + slider.Minimum;
            slider.Value = value;
            isDragging = true;

        }

        private void Slider_PreviewMouseMove(object sender, MouseEventArgs e)
        {
            if (isDragging)
            {
                double mousePosition = e.GetPosition(slider).X;
                double value = mousePosition / slider.ActualWidth * (slider.Maximum - slider.Minimum) + slider.Minimum;
                slider.Value = value;
            }
        }

        private void Slider_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (isDragging)
            {
                slider.ReleaseMouseCapture();
                isDragging = false;
            }
        }

The result:

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Answer 2

Thanks,I've solve it by myself,but I think my solution is too heavy,I still wanna others.

bool hc = false;         
private void border_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)         
{             
	hc = Mouse.Capture(sender as Border);
    Border father = (sender as Border).Tag as Border;
    double percent = e.GetPosition(father).X / father.ActualWidth;
    Value = Maximum * percent;         

}         
private void border_MouseMove(object sender, MouseEventArgs e)         
{             
	if (!hc)                 
		return;             
	Border father = (sender as Border).Tag as Border;
    double percent = e.GetPosition(father).X / father.ActualWidth;
    Value = Maximum * percent;         
}         

private void border_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)         
{             
	hc = !Mouse.Capture(null);          
}