C#微信公众平台开发

// 设置参数 string url =

string.Format(\pload?access_token={0}&type={1}\type);

return HttpRequestUtil.HttpUploadFile(url, path); }

string msg = WXApi.UploadMedia(access_token, \path); // 上图片返回媒体ID

string media_id = Tools.GetJsonValue(msg, \传入的path(aspx.cs文件中的代码)： string path = MapPath(data);

一个图文消息由若干条图文组成，每条图文有标题、内容、链接、图片等

遍历每条图文数据，分别请求微信接口，上传图片，获取media_id

3、上传图文消息素材

拼接图文消息素材Json字符串(ImgItemDal类(操作图文消息表的类))： /// <summary>

/// 拼接图文消息素材Json字符串 /// </summary>

public static string GetArticlesJsonStr(PageBase page, string access_token, DataTable dt) {

StringBuilder sbArticlesJson = new StringBuilder();

sbArticlesJson.Append(\ int i = 0;

foreach (DataRow dr in dt.Rows) {

string path =

page.MapPath(dr[\ if (!File.Exists(path)) {

return \要发送的图片不存在\\\ }

string msg = WXApi.UploadMedia(access_token, \上图片返回媒体ID

string media_id = Tools.GetJsonValue(msg, \

sbArticlesJson.Append(\

sbArticlesJson.Append(\

media_id + \

sbArticlesJson.Append(\dr[\

sbArticlesJson.Append(\dr[\

sbArticlesJson.Append(\+ dr[\

sbArticlesJson.Append(\dr[\

sbArticlesJson.Append(\dr[\ if (i == dt.Rows.Count - 1) {

sbArticlesJson.Append(\ } else {

sbArticlesJson.Append(\ } i++;

}

sbArticlesJson.Append(\

return sbArticlesJson.ToString(); }

上传图文消息素材，获取图文消息的media_id： /// <summary> /// 请求Url，发送数据 /// </summary>

public static string PostUrl(string url, string postData) {

byte[] data = Encoding.UTF8.GetBytes(postData);

// 设置参数

HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

CookieContainer cookieContainer = new CookieContainer();

request.CookieContainer = cookieContainer; request.AllowAutoRedirect = true; request.Method = \ request.ContentType =