ASP.Net Label control's Text property not updating text under button click event

Question

I have developed a small application in SharePoint. I am using custom application page and load .ascx Control over that page under Page_Load() method. In .ascx Control, I have created a small form with text boxes and a button Control. under this button click event, I want to change the text property of label like: lblConfirmation.Text = "Confirmation is OK"; but it did not change the text. It shows nothing because i set text property empty in label Control.

<asp:Label ID="lblConfirmation" runat="server" Text="" ></asp:Label>

Any Idea, what is wrong ?

Answer 1

Probably you need to check if it's a real postback or a first page load in your Page_Load() method... like this

if(!IsPostback)
{
    // code to only run at first page load here 
}

Otherwise you will initiate the label.Text to an empty string on each postback of the page and the page will be (more or less) static.