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[译]如何在.NET Core中使用System.Drawing?

程序员文章站 2022-05-25 14:23:26
你大概知道System.Drawing,它是一个执行图形相关任务的流行的API,同时它也不属于.NET Core的一部分。最初是把.NET Core作为云端框架设计的,它不包含非云端相关API。另一方面,.NET Core是跨平台框架,它不包含任何操作系统特定的API,例如Windows上的 "Ac ......

你大概知道System.Drawing,它是一个执行图形相关任务的流行的API,同时它也不属于.NET Core的一部分。最初是把.NET Core作为云端框架设计的,它不包含非云端相关API。另一方面,.NET Core是跨平台框架,它不包含任何操作系统特定的API,例如Windows上的 。再者,.NET Core也不包括类似,作为.NET framework一部分的,ConfigurationManager这样的诸多API。

在我之前的中,我已经描述了如何将这些API用于.NET Core和.NET标准应用程序。

为了实现这一点,有一个称为Windows Compatibility Pack的元包。但是,这个元包包含许多与Windows相关的API(作为包分发)。在这个元包里面有一个System.Drawing.Common包。

为了在.NET Core中使用绘图功能,请在Nuget包添加引用:

<PackageReference Include="System.Drawing.Common" Version="4.5.0-preview1-**" >

在这之后,你将可以运行例如以下的代码。

int x = 100;
Image image = new Bitmap(2000, 1024);

Graphics graph = Graphics.FromImage(image);

graph.Clear(Color.Azure);

Pen pen = new Pen(Brushes.Black);

graph.DrawLines(pen, new Point[] { new Point(10,10), new Point(800, 900) });

graph.DrawString("Hello drawing from .NET Core :)", 
new Font(new FontFamily("DecoType Thuluth"), 20,  FontStyle.Bold), 
Brushes.Blue, new PointF(150, 90));

image.Save("graph.jpeg", System.Drawing.Imaging.ImageFormat.Png);

在你运行上述代码之后,你将看到如下图片:
[译]如何在.NET Core中使用System.Drawing?

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