无刷新切样式同步更新未读消息数

昵称10504424 2013-03-25

展开全文

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

1	`<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();

enjoy code,enjoy life.