Web Forms :: Difference Between Page_Init() And Overriding Oninit()
Dec 31, 2010explain the diference between these Page_Init() and OnInit() events and when we should use which one?
View 2 Replies
Similar Messages:
Is Page_Init Method Needs Base.OnInit(e) Line ?
Feb 11, 2011there is PagE_Load code block.Its okay.but If I add Page_Init codeblock, shoud Oninit method is necessary ?
protected void Page_Init(object sender, EventArgs e){
base.OnInit(e);
if so why ? and what may be problem if I wont add this line ? because If I add or not everything seems working.
Web Forms :: Missing System.Web.UI.Page Base.OnInit?
Feb 24, 2011A client of mine developed a base page for their site from System.Web.UI.Page. Unfotunately in the OnInit override they forgot to call base.OnInit().Every page in the web site inherits from this base page class. So this requires them to test their complete site again to release the fix. This is a time consuming process to do a full regression test. Looking for insight into how urgent they should be to release this obvious fix. My opinion is this is a serious issue.Web search didn't really lead me to actually what goes wrong in the base Page class when this is done. I realize default event delegate won't get initialized.I know it is bad, but how bad?Looking into insight of what issues it can cause? How will this cause havoc with the ASP.NET web controls?Will controls down rev to emitting HTML and/or javascript for older browsers by default?
View 2 RepliesWeb Forms :: Why Does Server Side Hiddenfield Not Fire Oninit Event
Jan 19, 2011I have a hidden control and i am adding oninit event from code behind on hidden control,but why does server side hiddenfield not fire oninit event?
Code:
<input type="hidden" runat="server" id="hidden" name="hiddenColConfigure"/>
Code behind:
hidden.Attributes.Add("oninit", "initHiddenConfigure("this");
Web Forms :: Usercontrols Value On Page_init?
Sep 21, 2010In one of my pages I use an usercontrol. The usercontrol has a textbox and a button on it. When someone adds text to the usercontrols textbox, I want to use the entered text in my page_init event. The problem is that in the page_init event, the textbox value is empty. How can I use the entered text in the page_init event?
View 13 RepliesWeb Forms :: Cannot Set Cookie In Page_Init
Jun 11, 2010My code here:
[Code]....
When it runs, it successfully create a cookie thisVisit with today date as value.
However, when I reload the page, the cookie thisVisit becomes null.
Web Forms :: Page_Init Is Not Being Fired?
Oct 28, 2010I am using a baspage class for my session checking by the following code
[Code]....
My rest of the pages are being inherited from above basepage class. but the problem is that all the pages inherited from basepage class are not firing the event Page_Init...?
Web Forms :: Pass Value To Page_Init On Postback?
Jul 28, 2010I have a gridview control with some linkbuttons in.
When the linkbutton is pressed, i want the ID value attached to it, to be usually in the Page_Init where i need to create some dynamic controls, based on this ID.
But since the linkbutton's click event, is fired AFTER the Page_Init, this is a little hard for me to do.
How would i go about doing this, if it is even possible?
The reason behind, is that the linkbutton refers to a calendar event. Once clicked, it will list the details, but it will also list any comments, users have submitted about it. The dynamic controls i need to create, are delete buttons for the comments, so an admin can remove offensive comments.
All done on a single aspx page, with updatepanels (visible toggles, and populating labels). I would like to avoid sending users to another page, with a horrible ?id=6 link.
Web Forms :: Page_init And Page_load Fired Twice?
Jun 13, 2010i was debugging a test page when i noticed that its init and load event handlers are being called twice.
i found out by search that this may arise due to some html tags which im not using in my page,
also some line:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load,Me.Load
may cause this problem.
i use c# in the code behind aspx, if such line is the problem, in which file should i look for?
Web Forms :: Page_Init Firing On Each Postback?
Sep 23, 2010I am having a problem with web pages in a .Net site where the Page_Init is firing on each postback rather than the normal behavior (Page_Init fired initially, and only Page_Load fired on postbacks)
Several comments:
1. AutoEventWireup is set to false on all pages, with a "Handles Me.Init" set on Page_Init. All events are defined with the "Handles" verb as shown below
2. Each web page is subclassed to a parent class which provides strongly-typed access to the contents of session variables.
3. The Page_Load event for most of the pages performs a DataBind operation on a gridview control.
Partial Public Class SamplePage
Inherits PageManager (PageManager inherits from System.Web.UI.Page)
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
...
End Sub
Web Forms :: Page_init Called Twice / How To Find Its Reason
Jun 11, 2010I was working on something with Page_Init. I palce a break point and noticed the event is called twice. What happen was:
1) Page_Init is called
2) Page rendered on browser
3) Page_Init is called again
How do I find out what is casuing it to fire twice? Page_load is also firing twice and this is happening on IE.
Web Forms :: HiddenField And Viewstate Not Accessible During Page_Init Method?
Nov 26, 2010I have a GridView and a TabControl. On click on the row of grid, I store the EmpId in a hiddenfield in javascript. Now in Page_Init, I am trying to load a usercontrol for a EmpId stored in hiddenfiled. But I am not able to access hiddenfield value in the Page_Init. It display empty. If I have to load the usercontrol during Page_Init, then I have to access the HiddenField value first and it is give problem.
View 2 RepliesWeb Forms :: Wizard.ActiveStepChanged Method Is Called Before The Page_Init?
Feb 1, 2010I'm debugging right now and it seems the Wizard.ActiveStepChanged method is called BEFORE the Page_Init method?!?
I've tried it several times now.
If thats the case: what is called BEFORE Wizard.ActiveStepChanged?
Web Forms :: A Zone Can Only Be Added To The Page In Or Before The Page_Init Event?
Jan 12, 2010I m trying to load a new tab which should load WebUserControl2.ascx on button_clickbut I m coming across this eror: A Zone can only be added to the Page in or before the Page_Init event.I have a webpart in WebUserControl2.ascx which should load FeaturedControl.ascx.Well, i m getting the error when i click on button at :
Private Sub LoadTab2()
Dim uc2 As UserControl = CType(LoadControl("WebUserControl2.ascx"), UserControl)
tp2.HeaderText = "Tab2"
tc1.Tabs.Add(tp2)
tp2.Controls.Add(uc2)
End Sub
Where, tc is tabcontainer, tp is tab panel.
C# - Having Two Page_Load Without Overriding?
Jul 7, 2010I have a class named PageBase inheriting from ASP.NET Page. I want to do something in PageBase's Page_Load.All pages in my application have their logic done on their Page_Load. I'm thinking of a way that Page_Load of both of PageBase and other pages run without having to override Page_Load in pages. Is it possbile?
View 1 RepliesOverriding Alternatingrowstyle In Gridview
Feb 1, 2011I have a GridView which uses the Alternatingrowstyle property, but I also would like to higlight each row when the user Edit the row, but using this code, it only highlights the rows that don't have the Alternatingrowstyle.
protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
{
gv.Rows[e.NewEditIndex].BackColor = System.Drawing.Color.Yellow;
gv.EditIndex = e.NewEditIndex;
if (e.NewEditIndex % 2 == 0)
{
gv.Rows[e.NewEditIndex].BackColor = System.Drawing.Color.Yellow;
}
}
ADO.NET :: Overriding A EF Object Property Set?
Dec 7, 2010I've generated an entity framework class to handle my users from a custom db table. Now I'd like to override the password property of the EF object to Encrypt the value when it is set. From what i understand of MVC this should be done in the model where the EF object lives. I am able to do this easily in the controller but that doesn't seem like the most appropriate place as it will lead to duplicate code anywhere that needs to edit this user class. Is extending the partial class generated from EF possible for generated DB column properties?
View 1 RepliesC# - Cannot Get Values In OnInit Event
Sep 30, 2010I understand the order the events occur with page life cycle but it is not helping with my situation. I have a checkboxlist that is populated by a directory filled with forms. When I check a box next to the name of the form I would like it to dynamically create a wizard step and insert the form.
Order of events:
OnInit:
GatherForms() - Checks directory and loads all form names into checkbox
LoadForms() - Checks "Selected" Session and loads forms that were collected
CheckBoxList:SelectedIndexChanged #AutoPost = true#
PopulateForms() - Loops through the checkboxs and adds them to session state
When the user clicks the checkbox it does a postback and hits the OnInit which pulls from the session. The problem is that PopulateForms() was not ran yet so it populated nothing even though it is checked. If I click another item it will postback and appear. I cannot seem to be able to pull any kind of useful information from the checkbox before the refresh which means I cannot see the forms appear immediately. I have also tried looping the checkbox but unfortunately viewstate hasnt posted yet. sigh.
P.S: I cannot use Request.Form[] because I have to get all the selected items out of the checkbox. maybe i can but i cannot find a way :/
Web Forms :: Retrieving Item Values From A Dynamically Populated CheckListBox During Page_Init
Jan 15, 2010i have a checklistbox that is databound during Page_Init in an
If (!Page.IsPostBack)
block. the user can then check off certain values, and click an asp.net button which posts back the form and renders a crystal report on the same page.
i need to be able to determine which items were checked in the control so that they can be used as parameters in the crystal report. rendering must be done during Page_Init.
the checklistbox object is on the page during design time; only the items are dynamic.
i tried using the Request.Form object during Page_Init to obtain the checkboxlist's items but either i didn't code it correctly or it can't be done that way...
can the checkboxlist items' values be obtained during Page_Init, and if so, how?
Overriding The Editindex After A GridView Update?
Feb 12, 2010I have a GridView control hooked up to a datasource that I allow row editing on. I use the standard edit/save/delete buttons that point to the Update, Cancel, and edit GridView commands.
I would like to add an additional button, "Next" inline with the save/cancel button. This would function the same as the save button, but would also add an additional row to the grid, and place that row into edit mode. To do this, I've added code to the Updated event of the GridView, which adds a new record to the db, rebinds the grid, and sets the editindex. This seems work, but the grid does not actually return in edit mode. I stripped out the new record code and simply left the statement to set the editindex, but the grid still will not stay in edit mode.
Is it possible to force the grid to stay in edit mode in this scenario? It appears that unless you set the cancel property of the GridViewUpdatedEventArgs, the Grid is going to flip to view mode. I don't want to set the cancel property in this case, because I want the GridView to trigger my datasource object to save the record.
If this doesn't work, it appears that I will need to allow the update to occur normally, return to the client, and then send another server request to add the record. I'd prefer not to do it this way, I would like to perform the necessary operations in context of one roundtrip.
Here's what the code (simplified) looks like:
protected void Button1_Click(object sender, EventArgs e)
{
// Works Fine
this.sampleDataSource.Insert();
this.sampleGridView.DataBind(); [code]...
C# - IIS Overriding Custom 404 Error Page
Feb 18, 2011I am trying to create a 404 error page and currently I have all of the following/tried all of the following to try and accomplish this. When the user types in :
http://name/something.aspx
It works just as its supposed to. But if the user types in:
http://name/NotAFile
with no .aspx then IIS7 takes matters into its own hands and I get the lovely error page that IIS7 comes with. The goal is that the site redirects with only a 404 status code (so not a 200, or a 302 redirect). I have tried in both the web config with:
<customErrors mode="On" defaultRedirect="~/error/Default.aspx redirectMode="ResponseRewrite">
<error statusCode="404" redirect="~/error/NotFound.aspx" />
</customErrors>
This works for the url with a .aspx file extension but not for no extension. Same with this approach in the global.asax
void Application_Error(object sender, EventArgs e)
{
var serverError = Server.GetLastError() as HttpException;
if (serverError != null)
{
if (serverError.GetHttpCode() == 404)
{
Server.ClearError();
Server.Transfer("~/error/NotFound.aspx");
}
Server.Transfer("~/error/Default.aspx");
}
}
The same results are present for this :( My final attempt was to apply this to the web config:
<system.webServer>
<httpErrors existingResponse="PassThrough" />
</system.webServer>
With this I just get a plain white screen with nothing on it...
MVC :: Custom Exceptions - Overriding OnException?
Jun 18, 2010I've created a custom exception that inherits from Exception. I initially tried using the HandleError attribute with it, but too many things to list went wrong with that. I read about overriding OnException in a base Controller class, and decided to give that a try. This is the code:
[Code]....
This works, but I have a few questions. First, does an error page have to derrive from 'System.Web.Mvc.HandleErrorInfo'? I added a few new properties to my exception, and thought I'd be able to send it as a model to the error View where I could display those properties as usual when populating a View, but when I changed the type that the error View derrives from I get the yellow screen of death.
Also, I read that the above code would cause MVC to look first in the Views folder that correspondss to the controller that threw the exception. This was not the case. I placed the Error.aspx file in that Views folder and was treated to the YSOD again. I simply cut and pasted the file into the base shared folder and it worked. I am using Areas, and wonder if that could be a bug.
The last question I have is about the exception object as it's thrown. After throwing an exception, in the OnException method I thought I'd be able to see and manipulate the exception, but if that is possible I don't know how. What I would really like to do is to treat the exception object like any other object. I want to intercept its handling in the OnException method and send it to a View.
Forms Data Controls :: Writing Event Handler For Nested Grid In Page_Init()?
Jul 19, 2010my nested Grid Rowupdating Event is not fired., so i want to declare event in code., how can i do this/
[Code]....
C# - How To Call A Javascript Function Before OnInit()
Sep 26, 2010I'm calculating the screen size of the browser and storing it in a hidden field and i'm dynamically creating controls on the page OnInit() based on the sizes. But OnInit() is getting fired before javascript function fires to calculate the screen size.
View 3 RepliesArchitecture :: Overriding Aspx Pages - Best Design?
Jan 25, 2011I would like to provide my client with a aspx pages, with code behind provided, etc. But in some cases they will want to write their own markup - I'm thinking of having 2 directories [siblings of each other], one for the pages I provide, and the other for their custom markup. At page serve time, check to see if the client wrote their own markup and if so use it. Otherwise use the default provided.
In a nutshell I would like for my clients to be able to modify the pages I provide, but if they blow it up have a very easy way to back it out. Or to put it in a more positive light, allow them to override my pages easily.
