echart 图表在.net中生成图片的方法

经过中午近两个小时的努力，终于可以实现了：echart 图表在.net中生成图片

以下源代码：

前台页面：

<!DOCTYPE html>
<html>
<head>
    <title>生成图片</title>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
</head>
<body>
    <div class="maincontent">
        <div + data,
                            cache: false,
                            success: function (msg) {

                            }
                        });
                    });
                }
            );
    </script>

</body>

</html>

后台ajax代码：

using DataService.Framework.BaseFramework.Helper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Autofac;
using DataService.Framework.Ioc;
using System.Collections;
using System.IO;
using System.Text;

public partial class ajax_save : System.Web.UI.Page
{
    private string strAction = "";
    public ajax_save()
    {
        strAction = RequestHelps.Post("action");
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (strAction != null && strAction.Trim() != "")
        {
            switch (strAction)
            {
                case "saveImage":
                    SaveImage();
                    break;
            }
        }
    }
    /// <summary>
    /// 修改问卷皮肤
    /// </summary>
    protected void SaveImage()
    {
        int returnid = 0;
        string ImageSend = RequestHelps.Post("ImageSend");
        ImageSend=Server.UrlDecode(ImageSend);
             ImageSend = ImageSend.Replace(" ", "+");
              try {
                  string[] url = ImageSend.Split(',');
                  string u = url[1];
                  // Base64解码
                  byte[] b = Convert.FromBase64String(u);
                string name = "E:\12.png";
                FileHelper.ByteStreamToFile(name, b);
              } catch (Exception e) {

              }

        System.Web.HttpContext.Current.Response.Write(returnid.ToString());
        System.Web.HttpContext.Current.Response.End();
    }
}

//二进制数组Byte[]生成文件
        public static bool ByteStreamToFile(string createFileFullPath, byte[] streamByte)
        {
            if (!File.Exists(createFileFullPath))
            {
                FileStream fileStream = File.Create(createFileFullPath);
                fileStream.Write(streamByte, 0, streamByte.Length);
                fileStream.Close();
                return true;
            }
            return false;
        }

echart 图表 在.net中生成图片的方法

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echart 图表在.net中生成图片的方法