how to access master page control from content page

Question

I have a master page which contains a label for status messages. I need to set the status text from different .aspx pages. How can this be done from the content page?

public partial class Site : System.Web.UI.MasterPage {     public string StatusNachricht     {         get         {             return lblStatus.Text;         }         set         {             lblStatus.Text = value;         }     }      protected void Page_Load(object sender, EventArgs e)     {                  } } 

I have tried this, but was unsuccessful in making it work:

public partial class DatenAendern : System.Web.UI.Page {     var master = Master as Site;      protected void Page_Load(object sender, EventArgs e)     {                        if (master != null)         {             master.setStatusLabel("");         }     }              protected void grdBenutzer_RowCommand(object sender, GridViewCommandEventArgs e)     {                        try             {                 //some code                  if (master != null)                 {                     master.setStatusLabel("Passwort erfolgreich geändert.");                 }             }             catch (Exception ex)             {                 if (master != null)                 {                     master.setStatusLabel("Passwort konnte nicht geändert werden!");                 }                                                    }         }     }                    } 

Answer 1

In the MasterPage.cs file add the property of Label like this:

public string ErrorMessage {     get     {         return lblMessage.Text;     }     set     {         lblMessage.Text = value;     } } 

On your aspx page, just below the Page Directive add this:

<%@ Page Title="" Language="C#" MasterPageFile="Master Path Name"..... %> <%@ MasterType VirtualPath="Master Path Name" %>   // Add this 

And in your codebehind(aspx.cs) page you can then easily access the Label Property and set its text as required. Like this:

this.Master.ErrorMessage = "Your Error Message here";