C#实现自动生成图片并保存在本地

最新推荐文章于 2025-05-02 16:05:46 发布

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最新推荐文章于 2025-05-02 16:05:46 发布

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文章标签： c# javascript ViewUI

原文链接：http://www.cnblogs.com/AlphaWu/archive/2006/04/10/371572.html

本文介绍了一种使用C#编程语言动态生成图片的方法，并详细展示了如何根据当前日期和时间创建目录路径来保存这些图片。通过具体代码示例，读者可以了解到如何利用Graphics对象绘制文本到图片上，并将图片保存为JPEG格式。

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1 private void GenerateImagePath()
2         {
3             string Opath =@"D:\Test";//System.Configuration.ConfigurationSettings.AppSettings["ImagePath"];
4             if (Opath.Substring(Opath.Length-1, 1) != @"\")
5                 Opath = Opath + @"\";
6             string path1 = Opath + DateTime.Now.ToShortDateString();
7             string path2 = Opath + DateTime.Now.ToShortDateString() + "\\" + DateTime.Now.Hour.ToString();
8             string path3 = Opath + DateTime.Now.ToShortDateString() + "\\" + DateTime.Now.Hour.ToString() + "\\" + DateTime.Now.Minute.ToString();
9             if (!Directory.Exists(path1))
10             {
11                 Directory.CreateDirectory(path1);
12             }
13             if (!Directory.Exists(path2))
14             {
15                 Directory.CreateDirectory(path2);
16             }
17             if (!Directory.Exists(path3))
18             {
19                 Directory.CreateDirectory(path3);
20             }
21             string _FontName = "verdana";
22             int _FontSize = 25;
23             string _ShowName = DateTime.Now.ToString();
24             Bitmap objBitmap = null;
25             Graphics g = null;
26             Font stringFont = new Font(_FontName, _FontSize, FontStyle.Bold);
27             StringFormat stringFormat = new StringFormat();
28             stringFormat.FormatFlags = StringFormatFlags.NoWrap;
29             objBitmap = new Bitmap(1, 1);
30             g = Graphics.FromImage(objBitmap);
31             SizeF stringSize = g.MeasureString(_ShowName, stringFont);
32             int nWidth = (int)stringSize.Width;
33             int nHeight = (int)stringSize.Height;
34             g.Dispose();
35             objBitmap.Dispose();
36             objBitmap = new Bitmap(nWidth, nHeight);
37             g = Graphics.FromImage(objBitmap);
38             //g.FillRectangle(new SolidBrush(Color.Yellow), new Rectangle(0, 0, nWidth, nHeight));
39             g.FillEllipse(new SolidBrush(Color.Yellow), new Rectangle(0, 0, nWidth, nHeight));
40             g.DrawString(_ShowName, stringFont, new SolidBrush(Color.Black), new PointF(0, 0), stringFormat);
41             objBitmap.Save(path3 + "\\" + DateTime.Now.Ticks.ToString() + ".jpg", ImageFormat.Jpeg);
42         }

参考文章：
http://battler.cnblogs.com/archive/2005/01/26/97880.html

转载于:https://www.cnblogs.com/AlphaWu/archive/2006/04/10/371572.html