Dynamically resizing font to fit space while using Graphics.DrawString

Question

Does anyone have a tip whereas you could dynamically resize a font to fit a specific area? For example, I have an 800x110 rectangle and I want to fill it with the max size f

Answer 1

This is just an update for @Saeed's FindFont function.

GraphicsUnit.Pixel needs to be added to FindFont function return line. Without GraphicsUnit.Pixel, system dpi will effect the drawn string. Problem will arise when the dpi of system and bitmap mismatches. You can see more detail in this Windows DPI setting affects Graphics.DrawString. Since GraphicsUnit of PreferedFont is already set to GraphicsUnit.Pixel and return font is not set with GraphicsUnit.Pixel. In this case text will go out of the Room dimension, if bitmap dpi is larger than system dpi and font size will go smaller than the expected size if bitmap dpi is smaller than system dpi. Here is the updated function.

    private Font FindFont(  System.Drawing.Graphics g , string longString , Size Room , Font PreferedFont)
    {
        SizeF RealSize = g.MeasureString(longString, PreferedFont);
        float HeightScaleRatio = Room.Height / RealSize.Height;
        float WidthScaleRatio = Room.Width / RealSize.Width;
        float ScaleRatio = (HeightScaleRatio < WidthScaleRatio) ? ScaleRatio = HeightScaleRatio : ScaleRatio = WidthScaleRatio;
        float ScaleFontSize = PreferedFont.Size * ScaleRatio;
        return new Font(PreferedFont.FontFamily, ScaleFontSize,PreferedFont.Style,GraphicsUnit.Pixel);
    }