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c#winformstext-size

Increase and decrease text size in a textbox using buttons

I have a form with a textbox and 2 buttons. I need the 2 buttons to increase and decrease the text size when clicked. Is there a way I can do this?

Solution

  • Assuming you are using winforms
    Create two buttons named: btnFontSizeUp and btnFontSizeDown use the following code on click events:

    btnFontSizeUp on click:

    float currentSize;

currentSize = textboxName.Font.Size;
currentSize += 2.0F;
textboxName.Font = new Font(textboxName.Font.Name, currentSize, 
textboxName.Font.Style, textboxName.Font.Unit);

    btnFontSizeDown on click:

    float currentSize;

currentSize = textboxName.Font.Size;
currentSize -= 2.0F;
textboxName.Font = new Font(textboxName.Font.Name, currentSize, 
textboxName.Font.Style, textboxName.Font.Unit);