value of Master page label not getting updated form content page

Question

I have a content page I am updating the value of asp:Label of Master page from content page . value do get updated but the updated value is not visible. I tried two method using

1). defining a property (on master page) to set and get label value. e.g.

public string setErrorMsg
{        
    get { return lbl1.Text; }
    set { lbl1.Text = value; }
}

2) by finding control (label of master page) from content page and setting its text. e.g.

 Label lblMasterError = this.Page.Master.FindControl("lbl1") as Label;
 lblMasterError.Text="text is updated form content page";

both are updating value if I see it in debug mode but updated label value is not visible on content page.What might be the possible reasons for this behavior?

Answer 1

I don't know why is not finding your label but I've had the same to happen before. this is what works for me:

In the master page cs:

public void SetErrorMsg(string ErrorMsg)
{
    this.lbl1.Text = ErrorMsg;
}

From aspx page code behind (replace myMasterPage name w/ yours):

 ((myMasterPage)Master).SetErrorMsg("Some error text");