.Net provide us very good functionality to Create image from text, here is function that return Bitmap and take string as a parameter.

private Bitmap CreateBitmapImage(string TextImage)
{
    Bitmap objBmp = new Bitmap(1, 1);
    int Width = 0;
    int Height = 0;

    // Create the Font object for the image text drawing.    
    Font objFont = new Font("Arial", 20, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Pixel);

    // Create a graphics object to measure the text's width and height.
    Graphics objGraphics = Graphics.FromImage(objBmp);   

    // This is where the bitmap size is determined.
    Width = (int)objGraphics.MeasureString(TextImage, objFont).Width;
    Height = (int)objGraphics.MeasureString(TextImage, objFont).Height;

    // Create the bmpImage again with the correct size for the text and font.
    objBmp = new Bitmap(objBmp, new Size(Width, Height));

    // Add the colors to the new bitmap.
    objGraphics = Graphics.FromImage(objBmp);

    // Set Background color
    objGraphics.Clear(Color.White);
    objGraphics.SmoothingMode = SmoothingMode.AntiAlias;
    objGraphics.TextRenderingHint = TextRenderingHint.AntiAlias;
    objGraphics.DrawString(TextImage, objFont, new SolidBrush(Color.FromArgb(102, 102, 102)), 0, 0);
    objGraphics.Flush();
    return (objBmp);
}

From this We get direct Image of the text.

Enjoy...

Jay Ganesh.