这篇文章讲述Introduction to permanent material management in asp.net WeChat development的相关内容，需要的朋友可以参考下
除了3天就会失效的临时素材外，开发者有时需要永久保存一些素材，届时就可以通过本接口新增永久素材。
最近更新，永久图片素材新增后，将带有URL返回给开发者，开发者可以在腾讯系域名内使用（腾讯系域名外使用，图片将被屏蔽）。
请注意：
1、新增的永久素材也可以在公众平台官网素材管理模块中看到
2、永久素材的数量是有上限的，请谨慎新增。图文消息素材和图片素材的上限为5000，其他类型为1000
3、素材的格式大小等要求与公众平台官网一致。具体是，图片大小不超过2M，支持bmp/png/jpeg/jpg/gif格式，语音大小不超过5M，长度不超过60秒，支持mp3/wma/wav/amr格式
4、调用该接口需https协议
先来看我自己自定义的后台永久素材管理效果图，如下：
再看看微信官网后台上的显示界面，同步的哦！
首先我们来分析一下步骤：
第一步：如果想让图片在自己的页面显示，首先得先建个实体类吧，用来存储素材的信息吧
/// <summary>
/// 微信永久素材实体类，用于保存永久素材上传至微信服务器后返回的数据
/// </summary>
public class WxSuCaiInfo
{
public int SuCaiId { get; set; }//自增列序号
public string SuCaiUrl { get; set; }// 存储文件名
public string SuCaiType { get; set; }//素材类型，可分为image,voice,video,thumb(缩略图)
public string SuCaiTitle { get; set; }//图文消息的标题
public string SuCaiDigest { get; set; }//图文消息的摘要
public string SuCaiauthor { get; set; }//图文消息的作者
public string SuCaishow_cover_pic { get; set; }//图文消息是否显示封面.保存0或1
public string SuCaicontent { get; set; }//图文消息的正文内容
public string SuCaicontent_source_url { get; set; }//图文消息的原文链接
public string media_ID { get; set; }//上传至微信服务器后，返回的永久mediaID
public string Url { get; set; }//上传至微信服务器后，返回的图片URL，仅图片才会返回此属性
public string uploadDate { get; set; }//上传日期时间
}第二步：上传图片至微信服务器，成功后将返回的media_id和url两个字段数据和其他字段数据一并保存到本地服务器，上传的代码如下：
/// <summary>
/// 上传图片至微信服务器,并且本地也保存一份
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinBtnUploadImg_Click(object sender, EventArgs e)
{
if (this.FileUploadImage.HasFile)
{
string fileContentType = FileUploadImage.PostedFile.ContentType;
if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/png" || fileContentType == "image/x-png" || fileContentType == "image/jpeg"
|| fileContentType == "image/pjpeg")
{
int fileSize = this.FileUploadImage.PostedFile.ContentLength;
if (fileSize <= 2097152)
{
string fileName = this.FileUploadImage.PostedFile.FileName;
// 客户端文件路径
string filepath = FileUploadImage.PostedFile.FileName; //得到的是文件的完整路径,包括文件名，如：C:\Documents and Settings\Administrator\My Documents\My Pictures\20022775_m.jpg
//string filepath = FileUpload1.FileName; //得到上传的文件名20022775_m.jpg
string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);//20022775_m.jpg
string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg
//把图片上传至本地服务器
this.FileUploadImage.PostedFile.SaveAs(serverpath);//将上传的文件另存为
//上传图片素材至微信服务器,永久保存
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string url = string.Format("http://api.weixin.qq.com/cgi-bin/material/add_material?access_token={0}&type={1}", Access_tokento,"image");
try
{
string res = HttpUploadFile(url, serverpath);
//判断res结果集里面是否包含media_id
if (res.Contains("media_id"))
{
//如果能进行到这里，那说明图片已经上传至微信服务器，是永久素材哦，
//开始解析json串，使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(res);
//图片上传成功后，返回的是两个字段，media_id和url
//将两个字段开始存入数据库，保存数据，方便获取列表的时候直接从本地服务器读取
WxSuCaiInfo wsc = new WxSuCaiInfo();
wsc.SuCaiUrl = filename;//注意，这里保存的图片名称
wsc.SuCaiType = "image";//文件类型
wsc.media_ID = jsonObj["media_id"].ToString();//这个属性保存的是微信返回的media_id
wsc.Url = jsonObj["url"].ToString();//这个属性保存的才是微信返回的url
wsc.uploadDate = System.DateTime.Now.ToString();//记录当前文件上传日期时间
//存入数据库
WxSuCaiService wscs = new WxSuCaiService();
int num = wscs.AddWxSuCaiInfo(wsc);
if (num > 0)
{
Response.Write("<script>alert('上传图片素材成功！');location='WxSuCaiMannageImageList.aspx';</script>");
}
else
{
Response.Write("<script>alert('上传图片素材失败！');location='WxSuCaiMannageImageList.aspx';</script>");
}
}
}
catch(Exception ex)
{
Response.Write(ex.Message.ToString());
}
}
else
{
Response.Write("<script>alert('上传文件不能大于2M！')</script>");
}
}
else
{
Response.Write("<script>alert('只支持BMP,GIF,PNG,JPG,JPEG格式的图片！')</script>");
}
}
else
{
Response.Write("<script>alert('请选择图片！')</script>");
}
}走到这其实效果已经出来了，接下来看最后一步就是删除选中的素材，删除微信远程服务器的数据--再删除本地服务器的数据，有人问难道这个还有顺序？
其实你可以想象，如果微信服务器的图片没有删除成功，你先把本地服务器的图片删除了，那就和官网同步不了了。
第三步：删除素材
/// <summary>
/// 全选全不选
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void CheckAll_CheckedChanged(object sender, EventArgs e)
{
foreach (DataListItem item in this.DLSuCaiImageList.Items)
{
CheckBox checkIn = item.FindControl("CheckIn") as CheckBox;
checkIn.Checked = CheckAll.Checked;
}
}
/// <summary>
/// 删除选中项
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinkBtnDeleteSelected_Click(object sender, EventArgs e)
{
Boolean ischeck = false;
foreach (DataListItem item in this.DLSuCaiImageList.Items)
{
CheckBox checkIn = item.FindControl("CheckIn") as CheckBox;
if (checkIn.Checked)
{
ischeck = true;
Label lbSuCaiId = item.FindControl("lbSuCaiId") as Label;
Label lbSuCaiUrl = item.FindControl("lbSuCaiUrl") as Label;
Label lbmedia_ID = item.FindControl("lbmedia_ID") as Label;
//删除微信服务器上的图片
WeiXinServer wxs = new WeiXinServer();
string res = "";
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/material/del_material?access_token=" + Access_tokento;
//POST数据例子： POST数据例子：{"media_id":MEDIA_ID}
string media_id = lbmedia_ID.Text.ToString();
string postData = "{\"media_id\":\"" + media_id + "\"}";
res = wxs.GetPage(posturl, postData);
if (res.Contains("errcode"))
{
//开始解析json串，使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(res);
if (jsonObj["errcode"].ToString().Equals("0"))
{
///获取本地服务器的路径
string serverPathss = Server.MapPath("~/WeiXinImg/") + lbSuCaiUrl.Text.ToString();
//验证本地服务的路径是否存在该图片
if (File.Exists(serverPathss))
{
//如果存在就删除
File.Delete(serverPathss);
}
WxSuCaiService wscs = new WxSuCaiService();
//通过media_id删除本地服务器数据库记录
int num = wscs.DeleteWxSuCaiInfo(lbmedia_ID.Text.ToString());
if (num > 0)
{
Response.Write("<script>alert('图片素材删除成功！');location='WxSuCaiMannageImageList.aspx';</script>");
}
else
{
Response.Write("<script>alert('微信服务器图片删除成功！本地服务器图片素材删除失败！');location='WxSuCaiMannageImageList.aspx';</script>");
}
}
}
}
}
if (!ischeck)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请先选中删除项！！！')", true);
return;
}
}最后是页面的代码一并奉上，大家仔细研究。
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<link href="css/style.css" rel="Stylesheet" type="text/css" />
<style type="text/css">
.meun { width:1100px; height:40px; margin-left:20px; line-height:40px; margin-top:10px;border-bottom:1px solid #d6d6d6;
}
.meun ul { padding:0px; margin:0px;
}
.meun ul li{ float:left; width:100px; text-align:center;list-style:none;
}
.meun ul li:hover{ border-bottom:3px solid #ecd9df; cursor:pointer;
}
a:hover { color:#000;
}
.checkedstyle { border-bottom:3px solid #208008;
}
.meun_imglist { width:1050px; min-height:300px; border:1px solid #d6d6d6; margin-top:20px; margin-left:35px; margin-bottom:30px;
}
.uploadstyle { width:300px; background-image:url('images/inputbg.gif'); background-repeat:repeat-x; height:35px; border:1px solid #d6d6d6; float:left; margin-bottom:10px; line-height:35px;
}
.CheckAll { float:left; padding:5px;
}
.CheckIn { float:left; padding:2px;
}
.DLSuCaiImageList { margin-top:10px; margin-left:10px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<p class="place">
<span>位置：</span>
<ul class="placeul">
<li><a href="WelCome.aspx" target="rightFrame">首页</a></li>
<li>微信管理</li>
<li>德桥员工服务中心--素材管理</li>
</ul>
</p>
<p style="height:30px; line-height:30px; margin-top:10px; margin-left:45px;"><span style="float:left; font-size:16px;">素材管理</span><span style="color:red; float:left; margin-left:20px;">永久素材和微信官网同步，您在这里所操作的任何一项，将影响到官网后台素材管理，谨慎操作！</span></p>
<p class="meun">
<ul>
<li><a href="WxSuCaiManageList.aspx">图文消息</a></li>
<li class="checkedstyle"><a href="WxSuCaiMannageImageList.aspx">图片库</a></li>
<li><a href="#">语音</a></li>
<li><a href="#">视频</a></li>
</ul>
</p>
<p class="meun_imglist">
<p style="margin:5px auto 10px 10px; height:36px; line-height:36px;">
<asp:FileUpload ID="FileUploadImage" CssClass="uploadstyle" runat="server" />
<asp:LinkButton ID="LinBtnUploadImg" runat="server" OnClick="LinBtnUploadImg_Click"><span style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; margin-bottom:10px; font-weight:bold; text-align:center; float:left; margin-left:10px; color:#fff;">上传</span></asp:LinkButton>
<span style="margin-left:30px; color:red;" > 支持jpg,gif,png,bmp格式图片，大小2M内，如上传成功后，图片未能显示，请将图片重新命名后再尝试上传.</span>
</p>
<p style=" clear:both;line-height:35px; margin:10px auto auto auto; height:35px; width:1030px; background-color:#f6f6f6; border-radius:5px; border-bottom:1px solid #d6d6d6;">
<asp:CheckBox ID="CheckAll" CssClass="CheckAll" AutoPostBack="true" runat="server" OnCheckedChanged="CheckAll_CheckedChanged" /> <span style="float:left; padding:3px;">全选</span>
<asp:LinkButton ID="LinkBtnDeleteSelected" runat="server" OnClick="LinkBtnDeleteSelected_Click"><span style="width:111px; height:25px; line-height:25px; font-weight:bold; text-align:center; float:left; margin-left:15px; color:#000; background-color:#fff; margin-top:5px; border:1px solid #ecd9df; border-radius:3px;">删除选中</span></asp:LinkButton>
</p>
<asp:DataList ID="DLSuCaiImageList" CssClass="DLSuCaiImageList" runat="server" RepeatColumns="6">
<ItemTemplate>
<p style="width:150px; height:180px; margin-right:22px;margin-bottom:15px; border:1px solid #d9d9d9;">
<img src='../WeiXinImg/<%# Eval("SuCaiUrl") % alt="Introduction to permanent material management in asp.net WeChat development" >' style="max-width:90%" />
<p style="width:150px;height:25px; line-height:25px; text-indent:3px; border-top:1px solid #d9d9d9;">
<asp:CheckBox ID="CheckIn" CssClass="CheckIn" runat="server" />
<asp:Label ID="lbSuCaiUrl" ToolTip='<%# Eval("SuCaiUrl")%>' runat="server" Text='<%# Eval("SuCaiUrl").ToString().Length>8?Eval("SuCaiUrl").ToString().Substring(0,8)+"...":Eval("SuCaiUrl").ToString() %>'></asp:Label>
</p>
<p style=" clear:both; width:150px;height:25px; line-height:25px; text-indent:5px; border-top:1px solid #d9d9d9;">
<%# Eval("uploadDate").ToString().Length>20?Eval("uploadDate").ToString().Substring(0,20)+"...":Eval("uploadDate").ToString() %>
<asp:Label ID="lbSuCaiId" runat="server" Visible="false" Text='<%# Eval("SuCaiId") %>'></asp:Label>
<asp:Label ID="lbmedia_ID" runat="server" Visible="false" Text='<%# Eval("media_ID") %>'></asp:Label>
</p>
</p>
</ItemTemplate>
</asp:DataList>
</p>
</form>
</body>
</html>其他素材上传都类似，就不一一介绍了。
新建图文素材界面如下：
从图片库选择图片素材如下：
这是就是从已上传过的图片库中选择的，和图片素材管理界面的功能基本相似，只不过多了一个确认选择的按钮，因为确认选择了之后，要关闭本页，回到新建图文页面，主要代码：
/// <summary>
/// 确认选择，选中之后，跳转至新建图文页面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinkBtnSubMitSelected_Click(object sender, EventArgs e)
{
Boolean bools = false;
int num = 0;
foreach (DataListItem item in this.DLSuCaiImageList.Items)
{
CheckBox checkIn = item.FindControl("CheckIn") as CheckBox;
if (checkIn.Checked)
{
num += 1;
bools = true;
}
}
if (!bools)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请选择一个图片素材！！！')", true);
return;
}
if (num >= 2)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('您只能选择一个图片素材！');", true);
return;
}
else
{
foreach (DataListItem item in this.DLSuCaiImageList.Items)
{
CheckBox checkIn = item.FindControl("CheckIn") as CheckBox;
if (checkIn.Checked)
{
///获取选中图片media_id
Label lbmedia_ID = item.FindControl("lbmedia_ID") as Label;
Session["imgmedia_id"] = lbmedia_ID.Text.ToString();
Response.Write("<script>alert('已选择！');window.opener.location.reload();window.close();</script>");
}
}
}
}新建图文的页面在接收的时候可以这样：
if (Session["imgmedia_id"] != null)
{
WxSuCaiService wscs = new WxSuCaiService();
WxSuCaiInfo wscinfo = wscs.GetWxSuCaiInfo(Session["imgmedia_id"].ToString());
if(wscinfo!=null)
{
this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString();
this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString();
this.ImgTuWen2.Visible = true;
Session["imgmedia_id"] = wscinfo.media_ID.ToString();//图片的media_id
Session["fileNameimg"] = wscinfo.SuCaiUrl.ToString();//图片的文件名称
}
}最后新建图文信息的效果图如下：
官方后台如下：
关于编辑图文信息的关键代码如下：
/// <summary>
/// 绑定事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void DLMpNewsList_ItemDataBound(object sender, DataListItemEventArgs e)
{
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
{
LinkButton LinkBtnDeleteSucai = e.Item.FindControl("LinkBtnDeleteSucai") as LinkButton;
LinkBtnDeleteSucai.Attributes.Add("OnClick","return confirm('您确定删除该图文素材？？？删除后将和微信官网同步删除！！')");
HyperLink HyperLinkEdit = e.Item.FindControl("HyperLinkEdit") as HyperLink;
HyperLinkEdit.Attributes.Add("OnClick", "return confirm('即将进入编辑模式！！是否执行下一步操作？？')");
Label lbmedia_ID = e.Item.FindControl("lbmedia_ID") as Label;
HyperLinkEdit.NavigateUrl = "WxNewTuWen.aspx?media_id=" + lbmedia_ID.Text.ToString();//把图文消息的media_id传参到新建图文界面
}
}
新建图文页面关键代码如下：
if(!Page.IsPostBack)
{
///编辑模式
if (Request.QueryString["media_id"] != null)
{
string media_id = Request.QueryString["media_id"].ToString();
Session["sucaimedia_id"] = media_id;
WxSuCaiService wscs = new WxSuCaiService();
WxSuCaiInfo wscinfo = wscs.GetWxSuCaiInfo(media_id);
if (wscinfo != null)
{
this.txttuwen_title.Value = wscinfo.SuCaiTitle.ToString();
if (wscinfo.SuCaiTitle.ToString().Length > 15)
{
this.biaoti_yulan.InnerText = wscinfo.SuCaiTitle.ToString().Substring(0, 15) + "...";
}
else
{
this.biaoti_yulan.InnerText = wscinfo.SuCaiTitle.ToString();
}
this.txttuwen_author.Value = wscinfo.SuCaiauthor.ToString();
this.txtzhaiyao.InnerText = wscinfo.SuCaiDigest.ToString();
this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString();
this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + wscinfo.SuCaiUrl.ToString();
this.ImgTuWen2.Visible = true;
Session["imgmedia_id"] = wscinfo.SuCaithumb_media_id.ToString();
this.LinkBtnDeleteImg.Visible = true;
if (!String.IsNullOrWhiteSpace(wscinfo.SuCaicontent_source_url.ToString()))
{
this.txtYuanWenUrl.Text = wscinfo.SuCaicontent_source_url.ToString();
this.txtYuanWenUrl.Visible = true;
this.CheckYuanWen.Checked = true;
}
this.txtYuanWenUrl.Text = wscinfo.SuCaicontent_source_url.ToString();
this.tbContent.InnerText = wscinfo.SuCaicontent.ToString();
if (wscinfo.SuCaishow_cover_pic.ToString().Equals("1"))
{
this.CheckFengMianShow.Checked = true;
}
else
{
this.CheckFengMianShow.Checked = false;
}
}
}
}
编辑提交关键代码如下：
/// <summary>
/// 保存图文素材和修改按钮公用
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinkBtnSaveYongjiu_Click(object sender, EventArgs e)
{
//非空验证
if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题！');", true);
return;
}
if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);
return;
}
if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);
return;
}
//对各项进行赋值
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
//根据session判断media_id是否为空，也可根据request.queryString["media_id"]进行判断是否为空
if (Session["sucaimedia_id"] != null)
{
//执行更新操作
//{
// "media_id":MEDIA_ID,
// "index":INDEX,
// "articles": {
// "title": TITLE,
// "thumb_media_id": THUMB_MEDIA_ID,
// "author": AUTHOR,
// "digest": DIGEST,
// "show_cover_pic": SHOW_COVER_PIC(0 / 1),
// "content": CONTENT,
// "content_source_url": CONTENT_SOURCE_URL
// }
//}
string isshow_cover_pic = "";
if (this.CheckFengMianShow.Checked)
{
isshow_cover_pic = "1";
}
else
{
isshow_cover_pic = "0";
}
string description = NoHTML(this.tbContent.InnerText.ToString());
string postData = "{\"media_id\":\"" + Session["sucaimedia_id"].ToString() +
"\",\"index\":\"0\" ,\"articles\":{\"title\":\"" + this.txttuwen_title.Value.ToString() +
"\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() +
"\",\"author\":\"" + this.txttuwen_author.Value.ToString() +
"\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() +
"\",\"show_cover_pic\":\"" + isshow_cover_pic +
"\",\"content\":\"" + description +
"\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() +
"\"}}";
///修改永久图文素材
string url = string.Format("https://api.weixin.qq.com/cgi-bin/material/update_news?access_token={0}", Access_tokento);
string jsonres = PostUrl(url, postData);
if (jsonres.Contains("errcode"))
{
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(jsonres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
//修改本地数据
//保存数据，方便获取列表的时候直接从本地服务器读取
WxSuCaiInfo wsc = new WxSuCaiInfo();
wsc.SuCaiUrl = Session["fileNameimg"].ToString();//注意，这里保存的图片名称
wsc.SuCaiTitle = this.txttuwen_title.Value.ToString();//图文消息的标题
wsc.SuCaiDigest = this.txtzhaiyao.InnerText.ToString();//图文消息的摘要
wsc.SuCaithumb_media_id = Session["imgmedia_id"].ToString();//图文的消息封面media_id
wsc.SuCaiauthor = this.txttuwen_author.Value.ToString();
wsc.SuCaishow_cover_pic = isshow_cover_pic;
wsc.SuCaicontent = description;
wsc.SuCaicontent_source_url = this.txtYuanWenUrl.Text.ToString();
wsc.uploadDate = System.DateTime.Now.ToString();//记录当前文件保存图文素材日期时间
//修改数据库信息
WxSuCaiService wscs = new WxSuCaiService();
int num = wscs.UpdateWxSuCaiInfo(Session["sucaimedia_id"].ToString(), wsc);
if (num > 0)
{
Session["sucaimedia_id"] = null;
Response.Write("<script>alert('图文素材修改成功！');location='WxSuCaiManageList.aspx';</script>");
}
else
{
Response.Write("<script>alert('图文素材修改失败！');</script>");
}
}
}
}
else
{
//新增图文素材
}
}需注意：新建图文页面和修改图文页面是公用的一个页面.......
编辑提交按钮和保存按钮是公用的一个按钮.....
精彩专题分享：ASP.NET微信开发教程汇总，欢迎大家学习。
以上就是本文的全部内容，希望对大家的学习有所帮助。
The above is the detailed content of Introduction to permanent material management in asp.net WeChat development. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
