WPF TextBox redraws several times with the mouse

Question

I use the Windows Performance package (which part of the Microsoft Windows SDK) to profile my sample application. I use the “Puncher” with the option “Show chip updates on dirty areas”, which allows me to see when and where areas are redrawn in the application.

When I hover over the TextBox control, I see that it is redrawn several times, and the processor load increases. I tested a very simple window with just a TextBox control and a control button.

Is it normal for WPF to redraw mouse control? Is there anything I can do to keep this to a minimum?

Here are the windows that I use

<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
    <Grid>
        <StackPanel Orientation="Horizontal">
            <TextBox Height="25" Width="150" >
            </TextBox>
            <Button Margin="10,0,0,0" Height="25">1211</Button>
        </StackPanel>
    </Grid>

Answer 1

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