C# / Winform- maintaining text quality in changed DPI situation

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C#

WinForms

how maintaing text quality in serveral DPIs.

e.g)

First, do task in 96DPI Environment.

So i make layout(frame) 100 * 100. i add label (Font size 10)

Second, i excute that programms in 200DPI Windows.

it will show layout size (400* 400) [actually 400*400 is not exactly, just example] font size also changed property size[example 40].

what i want is maintain frame size 400*400 and font size 40 in 200DPI. just fix text blurry.

how maintaining that size and fix text blurry?