Tutorial: how to add watermark to a picture using built-in .NET functionality

 
 

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This tutorial demonstrates how to add a red text (watermark) to the photo file using .NET built-in functionality without any 3rd party components and libraries (like our Watermarking SDK) in Visual C# application

Download source code for this example: HowToAddWatermarkToImageInDotNetWithout3rdPartyTools_cs.zip (300 KB)

Input image:

sample input image

Output image:

output image

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Text;

namespace WithoutDotNet
{
class Program
{
static void Main(string[] args)
{
// Load image
Image image = Image.FromFile(“my_sample_image.jpg”);
// Create graphics from image
Graphics graphics = Graphics.FromImage(image);
// Create font
Font font = new Font(“Times New Roman”, 42.0f);
// Create text position
PointF point = new PointF(150, 150);
// Draw text
graphics.DrawString(“Watermark”, font, Brushes.Red, point);
// Save image
image.Save(“my_sample_output.jpg”);
// Open generated image file in default image viewer installed in Windows
Process.Start(“my_sample_output.jpg”);
}
}
}

Download source code for this example: HowToAddWatermarkToImageInDotNetWithout3rdPartyTools_cs.zip (300 KB)