zoukankan      html  css  js  c++  java
  • 在c#中图片原比例缩放

    在c#中图片原比例缩放
    cs中的一种写法.要引用using System.IO;

      string image_path = this.MapPath("~/work/" + Logo.jpg);
                    ImageButtonLogo.Width = 120;
                    ImageButtonLogo.Height = 90;
                    ImageButtonLogo.ImageUrl = ResolveUrl("~/work/" + Logo.jpg);
                    if (File.Exists(image_path))
                    {
                        System.Drawing.Image img = System.Drawing.Image.FromFile(image_path);

                        double _width = img.Size.Width;
                        double _height = img.Size.Height;
                        double _zoom_factor = _width / 120;
                        if (_height / 90 > _zoom_factor) _zoom_factor = _height / 90;
                        if (_zoom_factor > 1)
                        {
                            ImageButtonLogo.Width = Convert.ToInt32(_width / _zoom_factor);
                            ImageButtonLogo.Height = Convert.ToInt32(_height / _zoom_factor);
                        }
                    }
                    else
                    {
                        ImageButtonLogo.ImageUrl = ResolveUrl("~/work/default.jpg");
                    }

  • 相关阅读:
    win8 连接到OneDrive时出现问题-感叹号
    让tp6显示详细的错误信息及行号
    TP6出现错误 No input file specified.
    Git 访问慢 解决办法
    mysql5.7当两个字段名类似,查询时会出错
    linux停止进程
    mysql更新数据时:当想mysql某插入有某字段设置了unique且和之前相同时,会报错,并停止运行
    php升级版本后的影响5.5->7.1


  • 原文地址:https://www.cnblogs.com/qfb620/p/1083980.html
Copyright © 2011-2022 走看看