控制图片按比例显示（1）

最新推荐文章于 2022-09-13 14:57:14 发布

原创最新推荐文章于 2022-09-13 14:57:14 发布 · 1.2k 阅读

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文章标签：

#string #image #url #server #asp #html

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CS代码：

/// <summary>
  /// 宽度
  /// </summary>
  public int GetWidth(string url)
  {
   string urrl = Server.MapPath("../cmall") + url;
   double k;
   double width=0;
   double height=0;
   System.Drawing.Bitmap imgObj = new Bitmap(urrl);
   if ((imgObj.Width != 0) && (imgObj.Height != 0))
   {
    width=imgObj.Width;
    height=imgObj.Height;
    k=Convert.ToDouble( width/height);

    if(k>=1)
    {
     if (width>=80)
     {
      width=80;
      height=width/k;
     }
    }
    else
    {
     if (height>=80)
     {
      height=80;
      width=k*height;
     }
    }
   }
   int wid = Convert.ToInt32(width);

return wid;
}

  /// <summary>
  /// 高度
  /// </summary>
  public int GetHeight(string url)
  {
   string urrl = Server.MapPath("../cmall") + url;
   double k;
   double width=0;
   double height=0;
   System.Drawing.Bitmap imgObj = new Bitmap(urrl);
   if ((imgObj.Width != 0) && (imgObj.Height != 0))
   {
    width=imgObj.Width;
    height=imgObj.Height;
    k=Convert.ToDouble( width/height);

    if(k>=1)
    {
     if (width>=80)
     {
      width=80;
      height=width/k;
     }
    }
    else
    {
     if (height>=80)
     {
      height=80;
      width=k*height;
     }
    }
   }
   int hid = Convert.ToInt32(height);
   return hid;
  }

HTML代码：

<asp:Image id=Image2 runat="server" Width='<%# GetWidth(DataBinder.Eval(Container.DataItem, "BigImageURL").ToString())%>' ImageUrl='<%# "../CMALL"+ DataBinder.Eval(Container.DataItem, "BigImageURL") %>' BorderWidth="1px" Height='<%# GetHeight(DataBinder.Eval(Container.DataItem, "BigImageURL").ToString())%>' BorderStyle="Solid" BorderColor="Gray" ToolTip="查看详细信息">
</asp:Image>