Was the new ViewStateMode property introduced to avoid breaking the existing EnableViewState?
Does setting EnableViewState = false at the page level cause the ViewStateMode setting to be ignored?
PS: What is CW in stackoverflow?
<div runat="server" enableviewstate="false">
<div runat="server" enableviewstate="false"></div>
</div>
What happends if I won't set the enableviewstate property for the second div. Is it inherited from it's parent or not ?
I have an ASP.NET 4 web app that is using the Entity Framework to hold, amongst other things, a hierarchical structure of items that is used for features such as navigation.
One of the functions of the application allows the export of a particular branch of the hierarchy tree to XML, generated using a DataContractSerializer. Once exported, the intention is that the XML can then be uploaded to another instance of the same app, deserialized back into EF objects and then added to the data model on the second server.
When I try and import data in this way, I'm finding that I see the following error:
The object could not be added or attached because its EntityReference has an EntityKey property value that does not match the EntityKey for this object.
Taking a closer look at the XML that is generated by the serializer, I can see that the entity key is among the items that has been serialized. Since I'm importing entities that originate from a different database, some of the ID's clash.
What I'd ideally like to be able to do (unless I'm missing something here) is attach the imported entities to an object context and reset the ID's of the objects being imported.
Is there a smart way to do this? Do I simply have to set the ID for each of my imported entities to 0, attach them to the object context and then save changes?
I have a web page which has both asp.net controls as well as AJAX controls.I am facing a weird issue when I introduce some AJAX controls(Modal popup) inside a tabbed panel, the button onClick event stops firing.
View 6 RepliesI have a ASP.NET 4.0 webforms site where I have the MasterPage so it is set to ViewStateMode="Disabled" along with the content placeholders being set similarly.
When I'd view my page I'd still see a ViewState field rendered, I then tried adding the ViewStateMode="Disabled" to the page level also but that didn't change anything.
For some reason, I can change the property of a control in javascript, but then when their is a postback, it seems as if the control property ignores how I have set the property in javascript and goes by its last asp viewstate.
View 1 RepliesI am working on Vs2005 and asp.net 2.0. I have a solution with 4 projects (business object, components, data access, webclient)When I change any existing method or property in Business object or data access, it is not reflecting in the application. I have deleted the existing references to the project and added them after the new build. I always get errors like "method not found or No overload method "It seems like old verion of dll is still there in the reference.
View 7 RepliesWhat does EnableViewState on a HyperLink do or mean?
<asp:HyperLink ID="RegisterHyperLink" runat="server" EnableViewState="false">Register</asp:HyperLink>
What does it mean? and what will it do if I set it to true.
This problem is stopping me from winding up my project. I have a webform where there is a pop-up page that populates one text box and 2 dropdowns. And I also have a checkbox list that does a postback. Whenever the checkboxlist does a postback, one of the dropdownlist's value is reset. It happens with only one dropdown list. The text box and the other dropdownlist retain their value. I have put enableviewstate = true at both the page level and control level.
View 6 RepliesI have set enableViewState to false, why my textbox still remain my last value after i hit the postback button?
[Code]....
This problem is stopping me from winding up my project.I have a webform where there is a pop-up page that populates one text box and 2 dropdowns.And I also have a checkbox list that does a postback.Whenever the checkboxlist does a postback, one of the dropdownlist's value is reset.It happens with only one dropdown list.The text box and the other dropdownlist retain their value.I have put enableviewstate = true at both the page level and control level.
View 8 RepliesI know how view state works but I do not know how exactly works RegisterRequiresControlState. Where are stored values from control? How exactly does it work?
View 1 RepliesI am trying to avoid enabling EnableViewState..Sample code as you can see has 1 repeater and 2 textboxes inside. I bind the textboxes at page init. After a postback I want to get the updated data from the client & save in a db. The Request.Form contains the data keyed with autogenerated client ids but the repeater has 0 items after the postback. So my options seem limited to.a. Enable viewstate so I can pull the data from the repeater using Control.Find(...)b. iterate through Request.Form and find my textbox values...ultimatly the goal is to to render data from a datatable to some textboxes, allow the user to make changes then save these changes. I'd like to avoid viewstate if there is a clean alternative..ASPX:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Foo.aspx.cs" Inherits="Ads_Foo" EnableViewState="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-
[code]...
My dropdown controls do not keep the values after postback even though their EnableViewState is = true and in Page_Load I fill my controls ONLY if not postback.
My controls are inside a panel and the panel's EnableViewState is set to true as well...
To see the page you can log in as test and password is 12345
click on search page and set a value to say Gender and Ethnicity and click submit.
You will see the results, then navigate to number 2 or 3... You will see that it refreshes the controls and sets them to default.
If we set enable view state = false of a page then can we maintain the view state of that page ?
View 1 RepliesI have some (probably very basic) questions about developing custom controls. I am wanting to derive a set of button controls, and the first one I have started on is a "DeleteButton", that has a additional property (DeleteConfirmationText) that is built into the OnClientClick attribute. To get that added, I overrode the Render method as follows:
[Code]....
This all works well. Now, I will add some logic to make sure that there is some text in the DeleteConfirmationText property, but that isn't the intent of my question.
What I am also wanting to do is to override some of the default property values, so I added that to the default constructor:
[Code]....
Now, in the designer in VS2008, and I look at the properties for the control, there isn't a default value shown in the "Properties" section, and the Causesvalidation still shows the underlying classes default value of "True". As well, in design mode, where the GridView control that containse my DeleteButton control would be displayed, there is an error box "There was an error rendering the control. 'Are you certain you want to delete this attorney?' cound not be set on property 'DeleteConfirmationText'. Here's the markup where I am defining the deletebutton control:
[Code]....
What am I doing wrong?
I have a little web app, that consumes a web service. the main page runs a search - by passing params to a particular ws method, and then i bind the results to a gridview.
I have implimented sorting and paging on the grid, by putting the datatable that the grid is bound to in the viewstate and then reading/sorting / filtering it when necessary - and rebinding to the grid.
recently - as the amount of data coming back from the WS has increased dramatically when i try to page/sort etc i get
The connection was reset
The connection to the server was reset while the page was loading.
having googled around a bit it seems that a very large viewstate is to blame for this. but surely the only other option is to
Limit the results stick the datatable in the session rather than the viewstate dunno :)
previously i did have the datatable in the session, as some of this data needed to persist from page to page - (not being posted however so viewstate was not an option), but as the amount of data rose, and the neccessity to persist was removed, i used the viewstate instead. thinking this was a better option that the session anyway mostly because of the amount of data the session would have to hold, and the number of users using the app.
i actually thought that when the viewstate got very big, that .net split it over more than one hidden viewstate field, but it seems all im getting is one mamoth one that i have trouble viewing in the source..
can anyone enlighten me as to how to avoid the error im getting.. if it is indeed to do with the amount of data in the viewstate
DateTime.Now.ToString("h:mm tt")
What is the proper way to.. escape if that is the proper term, that html entity so that it will produce the output Code: 8:53 am and the non breaking space is rendered correctly be the browser?
The ASP.NET MVC RC change the GenerateId() behavior in theTagBuilder class. I know you followed the
HTML 4.01 Specification, but there are so many non-standard HTML ID existed in the world.For example, there are columns in the database tables that contains non-ASCII characters ( e.g. Chinese, Japanese, ... ). Due to Model passed to the View, the input field ID will contains that characters. For this new GenerateId() feature will breaking changes our original ASP.NET MVC application. All the ID will just gone.
It appears as though as soon as I intoduce a CPE function which is targeted to a floating panel/DIV, the DIV that has a height/width set to it dimension completely loses it value, or so it appears. In other words the DIV holds it's width and height parameters if the CPE function is not added to the page. see the screenshots and code.
Figure 1
without CPE function
Figure 2.
with CPE function
Here is the code to produce figure 1 result.
[Code]....
Here is the code to produce figure 2 result.
[Code]....
I have spent majority of my day trying to figure out why, I simply do not have and answer and was hoping if somebody has already seen this problem or know how to configure it for the floating DIV to hold it's width and height property when the CPE fucntion is added to the page.
I have an aspx page and when the user clicks a button the following code runs:
Response.Write(string.Format("<script language='javascript'> window.open('DisplayImage.aspx?DocumentID={0}', 'window','HEIGHT=600,WIDTH=820,top=50,left=50,toolbar=yes,scrollbars=yes,resizable=yes');</script>",
id));
The variable id is declared and it's value set eralier in the method.When the new window opens it displays the image properly, but the existing page suddenly loses all of it's styling. The links double in size and change font family. Does anyone know a way to retain styling on the calling page?
I had the same problem and used this posted to fix some of it.Now I had it on
SqlDataSource1.SelectParameters.Add("dateListedSince", TypeCode.DateTime, Date.Now.AddDays(-30))
any ideas how to fix that?
I have used jquery in one omy requirement. I would like to know why this breaking on jscript error will occur?
View 1 RepliesI have an app I am transitioning to MVC3 to see what the upgrade path is essentially. I've hit a snag. I believe I've run into a change that may be due to the changes for Dependency Injection in action filter attributes, but I have been unable to track down the cause, and the "correct" solution.This project uses StructureMap and NHibernate. The NHibernate session is started at the beginning of each request, and ends at the end of each request, thanks to a small module. This is just to give an idea of the stack involved...o I have a few custom Authorize attributes (Inheriting from AuthorizeAttribute) that perform some more complicated authorization logic for specific actions that they decorate. Part of their functionality involves using two repositories which they must either (a) have injected, or (b) get from the StructureMap ObjectFactory themselves. In MVC2 I was using option b, so that the CONSTRUCTOR of the attribute looked like this:
[Code]....
This worked fine, as in MVC2 the constructor was called each time the attribute was evaluated. This BREAKS in MVC3, where it would appear that this is no longer the case. Due to this apparent change, the FIRST time this attribute is evaluated, it runs fine, but each subsequent time, any calls in the repositories fails because it claims the NHibernate Session object hasn't been started! The reason being, as far as I can tell, that the CustomAuthorizeAttribute is created once, and then held in whatever state it exists in at that point for the lifetime of the application... Which means that the dependencies inside of it (Which SHOULD go out of scope at the end of each request, and be reinstantiated / fetched at the beginning of subsequent requests), are instead persisting with it becoming stale after the first evaluation.After banging my head against the desk for a few hours, I realized that simply moving these calls to the ObjectFactory into the AutorizeCore method made everything work again.Now, all of this was of course, a hack, because there wasn't a good easy to do real dependency injection into attributes in MVC2. I hear that is changed in MVC3, and I am wondering if this behavior is in response this change, and if so, what do I need to do to make this work?
Has anyone ever seen an instance where Visual Studio (or possibly SourceSafe) would decide to insert about 9 million non-breaking space characters at the end of a line in an ASPX file?I'm trying to figure out if this could be some weird bug, or if a programmer fell asleep with her head on the space bar, while in design view... and then went ahead and checked the page into SourceSafe without noticing what she'd done.
View 1 Replies