I have a master page and i am changing the masterpage file property to some other master page dynamically in the page PreInit event and that changing url is taken from a viewstate. but the view state is not getting in the pre init event.
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how can we add Page's PreInit event programatically in code behind with c# language ? More precisely i would like to say if AutoEventWireup is set to false then how to handle Page's PreInit event ?
View 4 RepliesI have a content page with a grid view control in it. In the page preinit event of this page, i am trying to add a column to the grid view. But the value of the grid view shows up as null. Is there something i am missing or how do we add properties to the grid view in the page pre init of the content page.
View 3 Repliesi have one method which save datatable in viewstate.i am calling this method in. page_load2. Prerenderthe page was every heavy,i did tracing of page i found due to calling of method from preprnder it doubled the viewstate sizewhat was the reseon behind this.
View 2 RepliesHow to get control in ASP.NET PreInit event? Pointers are null and FindControl method returns null.
I am using master and content pages. Markup of the content page looks like this:
<asp:Content ID="Content2" ContentPlaceHolderID="ContentBody" runat="server">
<asp:Table ID="Table1" runat="server" Width="100%">
.....
</asp:Table>
</asp:Content>
And code like this:
private void Page_PreInit(object sender, EventArgs e)
{
Control table = this.FindControl("Table1");
//table is null here
}
So table still is null after this.FindControl("Table1"). NamingContainer of the page is null too. What am I doing wrong?
UPDATE I have to use this event to create controls. As said in the ASP.NET Page Life Cycle Overview this event should be used for dynamic control creation. I need to create a list of links in my table. May be there is another way to do it?
I am having a ASP.net application it having three pages ,page 1,page 2,page 3,when the user navigating between this pages I want to maintain the view state in page level after postbacks(i.e.) .If a user visits page 3, passing some query loads some data .then he moves to page 1 doing some entries .after that he once again moves to page 3 now I want to display the data previously available at the time he moves to page 1, same
way I want to do to my three pages up to the user logging out.
How to get postback data in page preinit stage? Can I do that?
View 2 Repliesi am writing a login page in asp.net c# not using login control.i can create account and log in without problems as a user.the pages that require login has a separate master page.and i want to check if the user is logged in in masterpage page_preinit function but the problem is that child page event functions are called before masterpage's so i could experience a problem like session expire in child page before i get to check it in master page.is there anyway around this?
ok found the event im looking for. second one on the list
http://msdn.microsoft.com/en-us/library/dct97kc3.aspx
I'm having troubles remembering how to grab the list view's state, or page, so that when you leave the list, you can return to the list view page you left on. I have a data pager, and I have hyplerlinks for items in the list view that take you to a file upload or file delete page, and then returns to the list view. It returns to the list view's initial state (first page).
View 1 RepliesI have a textbox control i disabled view state at page and control level.i entered a value in the text box and click a button there is a postback,no business logic in the button click event.The values in the testbox are persisting though i disabled at the control level and page level.
View 5 Repliesi am using window.opener.location.href = window.opener.location.href; to refresh a page from another page
and it s working fine but i need to preserve state because i am loosing any ViewState on the first page when i do this. It will be as if the user typed in the url in the browser again instead of hitting refresh.
Recently I had migrated my ASP.net 1.1 based application from a IIS5.1 based platform to a IIS 6.0 based Platform.The new platform has 4 nodes with a load balancer.
One of the page of my application, which is perhaps the heaviest one in terms of form components like textboxes, dropdown is not behaving properly.Some times the users only get a "Blank White Screen" and some time they get a "Invalid ViewState" , Invalid length for a Base-64 char array.
Based on the KB
http://support.microsoft.com/kb/831150 I understand that the view state is getting truncated.
I had been facing this issue since we migrated to the new platform and the application was working perfectly fine on the old platform.
How can we pass the View State properties from one ASP.NET page to another in ASP.NET?
View 4 Replies1) I know there are lots of web sites that describe in what order events are called during the Asp.Net page life-cycle. But is there also a tool, perhaps Reflector, that would enable me to figure out by myself in what order are ALL the page's events and their event handlers called during the page's life cycle? 2) Would you say that trying to figure out exactly what is going on under the hood is a good idea or a waste of time? To clarify - I'd like to figure out exactly what is going on when a control tree is build - thus all the method calls, all the events called etc needed for control tree to be build ( I imagine there are hundreds or perhaps thousands lines of code written just for building a control tree).
View 4 Replieswhere the static variables are stored in asp.net aspx page.Is it in the view state? If so I guess you wouldn't want to stored big complex objects?
View 2 RepliesI haveMaster Page -> ASPX page -> User ControlUser control page is contains all dynamic bind controls (e.g Repeater) depended on ASPX Page (Only one parameter say ItemNo)The problem is, if I bound user control on page load event with passing respective parameters then it's create to much view state (I checked source file and it's almost 1.5 MB)In other way if I put one textbox, and a command button and I pass required parameter on button click and load the control then page size is ok (I checked and it's < 500KB)
View 2 RepliesUsing C#
Table
ID Name
001 Raja
002 Ramu
003 Ravi
004 Sajuee
Detail View Code:
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" Height="50px" Width="125px" AllowPaging="True" EnableViewState="False">
<Fields>
<asp:BoundField DataField="ProductName" HeaderText="Product" SortExpression="ProductName" /> <asp:BoundField DataField="vehiclename" HeaderText="Category" ReadOnly="True" SortExpression="vehiclename" /> <asp:BoundField DataField="platecode" HeaderText="Supplier" ReadOnly="True" SortExpression="platecode" /> <asp:BoundField DataField="inscom" HeaderText="Qty/Unit" SortExpression="inscom" /> <asp:BoundField DataField="inedate" HeaderText="Price" SortExpression="inedate" /> </Fields>
</asp:DetailsView>
When i run the code, Details View is Displaying First ID, First Name from the table.
Detail View Displaying like this
ID 001
Name Raja
Link: 1 2 3 4
But when i click the link2 it showing errors as "The DetailsView 'DetailsView1' fired event PageIndexChanging which wasn't handled."
Details View is not displaying all the data.
I have a gridview in which I have the autopaging option set to true, when i load the grid everything works on the first page, i can even go to second page , but when i click the edit button nothing happens and after that any click blows up the page giving me error Faile to load view state.
View 5 RepliesI am developing a custom control that needs it's viewstate to be loaded on init. Can I antecipate the view state loading at any time?
View 1 RepliesIn vb.net code behind we can go the code view and from right dropdown box we can view the page events. But i c# code behind i can find events for controls like button and other controls. but in c# how to view the page events.
View 3 RepliesIn my web application, I have to load different Master pages depending on the user log-in information. When I say different, I mean not just the colors but a whole new look[including navigation options]. So I am using 2 Master pages [one of them is set as default] and depending on the user information the other page will be used.
I got it to work by storing the user information in a Session variable and applying the master page dynamically using the Page_PreInit event. But the issue is, if I hit the back
button, sometimes [yeah, only sometimes !!!] the master page is reset to the default page. Initially I thought it is a Session timeout issue. But it isn't, as some of the session variables still have data. Can anyone explain whats actually happening?
Can not fire Grid View RowEditing event in page load?
I have a grid view , select the grid line item from popup when click the image button which is located in header template. When click the select button in popup window , fill up the grid row and allow to edit the quantity text box.
In page load
If Page.Request.Params("__EVENTTARGET") = "ctl00_popupField" Then
AddHandler grdDOLineItem.RowEditing, AddressOf grdDOLineItem_RowEditing
End If
Protected Sub grdDOLineItem_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs)
'bind the grid view row
End Sub
I know the basic of view state. But I dont understand the functionality of view state at a control. For example, a texbox has a property view state. what is the purpose ? what it wiil act for true or false value.
View 3 RepliesI have two radio button list:
*1* report views -- 4 options -- NOT in updatepanel
*2* pagination views -- 2 options -- IS in updatepanel
The situation goes as follows: Refresh WORKS in default setting but when I select *2* radio button options and refresh the page renders the state that the (1) was entered in.
Example: () are the radio buttons
Report Viewing: () (x) () () Pagination View: (x) () REFRESH works!
Report Viewing: () (x) () () Pagination View: () (x) REFRESH fails to display Report Viewing: () (x) () () Pagination View: (x) ()
Report Viewing: () (x) () () Pagination View: (x) () REFRESH works!
OR: () are the radio buttons
Report Viewing: () () (x) () Pagination View: () (x) REFRESH works
Report Viewing: () () (x) () Pagination View: (x) () REFRESH fails to display Report Viewing: () (x) () () Pagination View: () (x)
Report Viewing: () () (x) () Pagination View: () (x) REFRESH works
I am using the session variable to hold the Pagination Viewing option but during page states, I've noticed that when a 2nd option is selected of *2* radio buttons (doesn't matter of 1st or 2nd option was initially selected) that during debugging mode the step over corrects the issue but not the right table viewing. Upon entering Page_Init selection selection index of radio button list returns to 1st option.
What is the maximum size of view state?
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