DrawString problem.

I'm writing a small game using GDI+ and I'm using the DrawString method of the Graphics object to write letters to a bitmap, one by one, in order to give the impression of a string being displayed letter at a time.

The gist of it is:

Code:

---

// Sentence to be drawn.
string strText = NPC.Name + ": " + NPC.GetDialogElement(DialogCounter);
// Split the sentence into letters.
char[] CharacterArray = strText.ToCharArray()
string strBuildingString = "";

foreach (char Character in CharacterArray)
{                                       
        strBuildingString += Character.ToString();
        GFX.DrawString(BuildingString,fntFont,beigeBrush,130,413);
        Form.Invalidate()
}

---

The problem is that after about 20 to 30 characters being printed, the DrawString method appears to start drawing the string with a greater space between each letter. After about 50 characters, it goes back to normal spacing. I have no idea what's causing this. I assume it's to do with the framework, rather than my own code because I can't see anything wrong with my own.

Thanks for your help!

Try to draw the same letter over 20 or 30 and see if it produce the same result. also try using another font .