How to make Master Page to display a value on its label on each page
Question
I am designing a Change Request(CR) module for our website, which allows users to raise a CR and submit it for review. A workflow gets generated immediately after raising CR, so, user have to submit it by voting to his activity(Say activity as 'Submit to CCB'). Then I am setting a label's value which is added to master page as 'In Review' I can see label value now, and immediately navigating to next activity(next page). But I could not see the label's value there in next page. As I am new to implementing master page concept, unable to find out the reason.
WFLCRMaster.master
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="WFLCR.master.cs" Inherits="MasterPage" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<form id="masterFormMIF" runat="server">
<div id="WorkflowStatus">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UserUpdatePanel" runat="server">
<ContentTemplate>
<asp:Label ID="WorkflowSignoffStatus" runat ="server"> </asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolderMIF" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
And I created a property in WFLCR.master.cs, And added <%@ MasterType VirtualPath="~/WFLCR.master" %> to all pages.
public string CRStatus
{
set { WorkflowSignoffStatus.Text = value; }
get { return WorkflowSignoffStatus.Text; }
}
Here is my Preliminary.aspx.cs
public partial class Preliminary : System.Web.UI.Page
public string WFLCRStatus
{
get
{ object value = HttpContext.Current.Session["CRStatus"];
return value == null ? "" : (string)value;
}
set
{ HttpContext.Current.Session["CRStatus"] = value;
}
}
protected void BtnToCCB_Click(object sender, EventArgs e)
{
WFLCRStatus = "In Review";
Master.CRStatus = "In Review";
Response.Redirect("CCB.aspx");
}
}
Sets value to the label but on navigating to next page the label is empty.
I created a property here in the plan of using it in master.cs's Form_Load event to display the status. But I don't know how to use it there. Unable to create an instance there to access this property.
2 answers
solution1
1 ACCPTED 2015-05-22 02:41:50
Calling redirect after setting a label's value makes no sense.
Master.CRStatus = "In Review";
Response.Redirect("CCB.aspx");
When you redirect, the framework sends an HTTP Redirect to the client browser, and the current request/response cycle ends and a completely new one begins. Meaning the entire page lifecycle is loaded again, including the master page.
To make this work, update your Session, perform the redirect, then in the Page_Load of the next page check the Session to see if that value is there, and update the label accordingly.
WFLCRStatus.Status = "In Review"
Response.Redirect("CCB.aspx");
next page
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
if(!String.IsNullOrEmpty(Session["CRStatus"]))
{
Master.CRStatus = Session["CRStatus"].ToString();
}
}
}
solution2
-1 2015-05-22 02:45:48
尝试将默认值设置为WorkflowSignoffStatus然后检查控件是否在BtnToCCB_Click上返回正确的值。
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