无刷新 切样式 同步更新未读消息数
A.aspx
<asp:Repeater ID="rptMessageList" runat="server">
<ItemTemplate>
<tr id="trReaded_<%#Eval("RecordID")%>" class="<%#getReadClass(Eval("IsRead").ToString())%>" onclick="MarkMsgRead(<%#Eval("RecordID")%>)">
<td class="messcen_tabtd1">
<asp:CheckBox ID="chkItem" runat="server" />
<asp:Label ID="lblID" Visible="false" Text='<%# DataBinder.Eval(Container.DataItem, "RecordID")%>' runat="server"></asp:Label> </td>
A.aspx
public string getReadClass(string pIsRead)
{
string mReturn = "";
if (pIsRead == "False")
mReturn = "messnoread";
return mReturn;
}
D.js
function MarkMsgRead(pRecordID) {
try {
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (err1) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (err2) {
xmlHttp = new XMLHttpRequest();
}
}
//
var mUrl = "SyschangeStyle.aspx?MsgID=" + pRecordID;
xmlHttp.open("GET", mUrl, true);
xmlHttp.onreadystatechange = OnHandlerMsg;
xmlHttp.send(null);
}
function OnHandlerMsg() {
//0 (未初始化)： (XMLHttpRequest)对象已经创建，但还没有调用open()方法。
//1 (载入)：已经调用open() 方法，但尚未发送请求。
//2 (载入完成)： 请求已经发送完成。
//3 (交互)：可以接收到部分响应数据。
//4 (完成)：已经接收到了全部数据，并且连接已经关闭。
if (xmlHttp.readyState == 4) {
var isValid = xmlHttp.responseText;
var mMsgCount = document.getElementById("_Header1_lblMsgCount");
mMsgCount.innerHTML = isValid.substring(isValid.indexOf(':') + 1, isValid.indexOf(']'));
var mTrID = isValid.substring(0, isValid.indexOf(':'));
var mTrReadID = "trReaded_" + mTrID;
var exists = document.getElementById(mTrReadID);
exists.removeAttribute("className");
}
}
B.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
int msgID = int.Parse(this.Request.QueryString["MsgID"]);
if (Request.QueryString["MsgID"] != null)
{
if (this.changeTrue(msgID))
{
string customerID = myShare.GetAObject(true, 0, "CustomerID", "Customers", "UserID='" + Session["UserID"].ToString() + "'").ToString();
int ReceiverID = int.Parse(customerID);
string mMsgCount;
mMsgCount = myShare.GetAObject(true, 0, "count(RecordID)", "MessagesRecord", "IsRead=0 and Deleted=0 and Receiver = " + customerID).ToString();
int mmMsgCount = int.Parse(mMsgCount);
Response.Write(msgID + ":" + mMsgCount + ']');
}
else
{
Response.Write(msgID + "messnoread;修改失败");
}
}
else
{
Response.Write("请重新尝试");
}
}
private bool changeTrue(int pmsgID)
{
return myShare.SetAField(0, "IsRead", "1", "MessagesRecord", "RecordID=" + pmsgID) != null ? true : false;
}
C.ascx
<i>(<a href="SysMessageOld.aspx" title="新消息"><asp:Label ID="lblMsgCount" runat="server"></asp:Label></a>)</i>
C.ascx.cs
string customerID = myShare.GetAObject(true, 0, "CustomerID", "Customers", "UserID='" + Session["UserID"].ToString() + "'").ToString();
int ReceiverID = int.Parse(customerID);
lblMsgCount.Text = myShare.GetAObject(true, 0, "count(RecordID)", "MessagesRecord", "IsRead=0 and Deleted=0 and Receiver = " + customerID).ToString();