Monday, 21 October 2013

Writing Text on Images Using Custom Fonts in ASP.NET C#

Introduction

Sometimes you may want to use third party or custom fonts to write texts over an image within your ASP.NET applications.

This is how you do it.


Create a new website or project

Create an empty Asp.Net project in visual studio.

Add Images and Fonts folders to your project. Then put an image file in the Images and a font file to Fonts folders.

Add Test.aspx page and put the code shown below in the page behind.


The Code

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.Drawing.Text;

public partial class Test : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string fontName = "YourFont.ttf";
        PrivateFontCollection pfcoll = new PrivateFontCollection();
        //put a font file under a Fonts directory within your application root
        pfcoll.AddFontFile(Server.MapPath("~/Fonts/" + fontName));
        FontFamily ff = pfcoll.Families[0];
        string firstText = "Hello";
        string secondText = "Friend!";

        PointF firstLocation = new PointF(10f, 10f);
        PointF secondLocation = new PointF(10f, 50f);
        //put an image file under a Images directory within your application root
        string imageFilePath = Server.MapPath("~/Images/YourImage.jpg");
        Bitmap bitmap = (Bitmap)System.Drawing.Image.FromFile(imageFilePath);//load the image file

        using (Graphics graphics = Graphics.FromImage(bitmap))
        {
            using (Font f = new Font(ff, 14, FontStyle.Bold))
            {
                graphics.DrawString(firstText, f, Brushes.Blue, firstLocation);
                graphics.DrawString(secondText, f, Brushes.Red, secondLocation);
            }
        }
        //save the new image file within Images directory
        bitmap.Save(Server.MapPath("~/Images/" + System.Guid.NewGuid() + ".jpg"));
        Response.Write("A new image has been created!");
    }

}

Finally

Go back to your project Images folder and see the new image with your new fonts on it.


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