Create bitmap from scratch or load from file using C#

Creating bitmap from scratch or loading from file using C# is a common requirement. Aspose.Drawing for .NET lets you create a bitmap from scratch or open from an existing file that can further be edited. 

Create New Bitmap in C#

Creating a new image from scratch is easy using Aspose.Drawing for .NET API. The following C# example shows how to create a new drawing and draw an arc on it.

1. Instantiate an object of Bitmap class
2. Initialize an object of Graphics class from this bitmap
3. Define a Pen object with desired parameters
4. Use the DrawArc method of Graphics class object to draw an arc

// For complete examples and data files, please go to https://github.com/aspose-drawing/Aspose.Drawing-for-.NET

using System.Drawing;

Bitmap bitmap = new Bitmap(1000, 800, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
Graphics graphics = Graphics.FromImage(bitmap);

Pen pen = new Pen(Color.Blue, 2);
graphics.DrawArc(pen, 0, 0, 700, 700, 0, 180);

bitmap.Save("DrawArc.png");

Load existing Image from File into Bitmap

You can also load an existing image from file and save it back to disc using the API as shown in the following C# code sample.

// For complete examples and data files, please go to https://github.com/aspose-drawing/Aspose.Drawing-for-.NET
// Load the image:
Bitmap bitmap = new Bitmap(RunExamples.GetDataDir() + @"Images\aspose_logo.png");

// Save the image:
bitmap.Save(RunExamples.GetDataDir() + @"Images\LoadSave_out.png");