Page Load being called before Button Event in .net

Question

I have the following code:

protected void Page_Load(object sender, EventArgs e) { //get questions List<Question> questions = Question.GetQuestionsForTesting(); //for each question foreach (Question currQuestion in questions) { //display the questionAnswer control QuestionAnswer newControl = (QuestionAnswer)LoadControl("~/Account/QuestionAnswer.ascx"); newControl.newQuestion = currQuestion; questionAnswerPanel.Controls.Add(newControl); } } protected void submitAnswers_Click(object sender, EventArgs e) { //for each control foreach (QuestionAnswer questionAnswerControl in questionAnswerPanel.Controls) { //get ID of question and correct/incorrect Tuple<Boolean, int> correctIncorrectANDquestionID = questionAnswerControl.isAnswerCorrect(); //save in DB } }

and

<asp:Panel runat="server" ID="questionAnswerPanel"></asp:Panel> <asp:Button runat="server" ID="submitAnswers" OnClick="submitAnswers_Click" Text="Submit Answers"/>

When I click the submitAnswers button the page load gets called and then the button event. I need some way of checking the answers submitted but I am not able to do this currently as my controls disappear on the postback along with the questions and their answers. So when the event method finally gets called I am just checking answers from new questions with no user input.

I have looked at various other questions but I can't find a similar question.

Community · Accepted Answer · 2017-05-23 11:45:22Z

2

You can find the answer here: Which control caused the postback?. But you should use !Page.IsPostback check in the Page_Load Event.

edited May 23, 2017 at 11:45

CommunityBot

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answered Mar 1, 2015 at 22:18

Ibrahim ULUDAG

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Comments

Community · Accepted Answer · 2017-05-23 12:07:37Z

You can restructure your actions on several point in the page cycle. You can read more info on ASP.NET page life cycle explanation.

In your situation I would recommend to add the Page_PreRender step. Add move your current Page_Load actions to it.

So it will be like:

Step 1: Page_Load is called, where you can do general actions
Step 2: Button Clicks are processed
Step 3: Page_PreRender is called, where you can load the dynamic controls with questions. At this point you can reload the data from database.

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