i want to hold data at runtimeEx-I have a 3 Services A,B,C and in A,B,C contain services list,then if user select A service and 3 services in a A Listagain user select B service and 2 services in a B Listand again user Select C Service and select 1 services in a C listSo How i can hold data A,B,C services ID'S value with respect to services listID'S value at runtime.
View 1 RepliesIm binding the gridview in page load.After i click the link button in the gridview it displays another gridview.I have a checkbox in that gridview.I check some of the checkboxes.while i click the save button i want to get that checkbox state whether its checked or not.Bt for me its showing no records in the grid.How do i persist my data and get the checbox's state.
View 3 RepliesI'm trying to create a page that will display a survey that has multiple pages... everything displays fine, but I'm doing something wrong on the timing as my dynamic controls (for the answers) are disappearing when I post back. (so I can't get the answers or perform validation)
1) I have a Repeater control on my page that is populated in Page_Load !IsPosBack that is acting as navigation. It displays each page name, and each Repeater Item contains a LinkButton whose OnCommand event does:
2) There is a second Repeater on the page that is populated with Questions corresponding to the selected Page (from the step above) This is just a DataTable created and then DataBound to the Repeater.
3) The Questions Repeater control has an OnItemCreated event that dynamically generates the proper control for the Answer (TextBox, DropDownList, RadioButtonList, etc...) and places that control in a Placeholder in the Repeater Item.
This all works for displaying, but when I attempt to click a Button, I cannot access the controls generated in step three, and all of those controls disappear from the Repeater.
I have tried creating databinding the Questions repeater in Page_Init as well as dynamically creating the answer controls in a (foreach RepeaterItem...) statement as opposed to OnRepeaterItemDataBound... but now my buttons (located in the FooterTemplate) refuse to post back at all...
added a Test button for postback, but that doesn't work either.
I have an aspx page with a bunch of aspx controls, nothing unusual.
In this page I also have an html select control and a simple input control with type="submit". When I hit submit, the request goes back to the server, where I am trying to get hold of the value of the select control, but how can I do that? I tried looking for it in the Request.Form scope, no luck. My code looks like this:
<div id="divSearch_ctl00_ctl01_CustomContent_BasicCustomContent_RoyaltiesGrid1" style="display:none;">
<span>From</span>
<select> [code]....
I bind textbox to a property of an object. After running the app, if the value of textbox is changed, I expect the object to update this property .This does not happen. I also understand that I am recreating the object from viewstate on postback, which is wrong. how to persist the state of object on postbacks all.
[Code]....
I have a grid view whose 1st column is Image Field. Now I assign 1 out of 4 images to each row at runtime. I have this gridview in ajax updatepanel. Now how can i persist the images in the first column after a postback.
View 6 RepliesI have a repeater that displays financial data and prices for various stocks.
On this page, I also have an "export" button that needs to take the data ~on the screen~ and convert it into a CSV for the user.
The problem is, after I databind my list of "Stock" entities:
List<Stock> stocks = GetStocks()
rptStockList.DataSource = stocks;
rptStockList.DataBind();
The data is not persisted on postback.
Also, the data on this page is constantly being updated via an UpdatePanel and a Timer control (being re-databound each time). Every 30 seconds the prices displayed for the various stocks in the repeater control change.
Now, I have a linkbutton that has a click event method in the code-behind that is supposed to export the ~data on the screen~ for the user. I need to grab the current values for the list of stocks last databound to the repeater. I can't simply go grab the latest values from the database because those will have been changed in the time between the last refresh.
protected void lbtnExportStocks_Click(object sender, EventArgs e)
{
// No longer have the stock data used in the repeater control
ExportStocksToExcel();
}
I know that ASP.NET doesn't persist the datasource for the repeater on post-back but I need to still be able to either re-construct this list of Stock entities so I can send them the CSV or I need persist it in some way.
I don't want to do anything that is too heavy handed in terms of performance because during certain days of the week this application can have some heavy usage.
What is the proper solution to this type of situation? Should I iterate through the Repeater's "Items" collection and reconstruct the Stock entities?
I am trying to figure out how to persist the playing of a Silverlight MediaElement playing within a Silverlight User Control embedded in an ASP.NET during postback.
The scenario goes:
Have a media player on a site, press play, continue navigating through site while the music continues playing.
What it does right now:
Obviously the object gets loaded anew on each postback or page redirect (even if it's back to the same page IE: default.aspx).
I've seen samples of how to persist the state of a Control on postback and even complex data through cross-page postback. But nothing that covers my specific case.
Other particulars:
Silverlight 2
ASP.NET
C#
My default.aspx:
[code]....
I have a div lets say :
<div id="foo">
</div>
Now I inserted some html content inside this div on some button click(without postback) . Now when I perform a postback on some action say on server control submit button , I want the html(which I inserted via javascript) be persisted in the foo div. Right now I am thinking to take an hidden input server control and when the form will be submitted I will insert the content of foo div in that hidden control, the next time when the page loads after the postback I will fill the foo div with the content inside the hidden field. Am I going with correct approach or is their any other good approach which I should opt ?
I ve been searching for this on various forums and came through a number of supposed solutions which didnt work for me.
My web form works perfectly for me when on development and after publishing on IIS but when I try to access remotely the session value is always null.
I do these things in the following order and when accessing remotely I always get the exception i throw when session is null.
I debugged it and my list is never null when reaching the assignment point.
[code]....
in webconfig I have the following tag which I saw as an answer in many forums
<sessionState mode="InProc" cookieless="true" timeout="200" />
I'm implementing IHttpHandler and IRequiresSessionState and I'm using context.Session but after I set up a value in Session, it's lost in the next request. What can I do to persist the values ?
$.ajax({
url: "/test.test",
type: "POST",
data: "{'type':'GetStep'}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {...}
});
The second call is similar to this, but the values that get set when I call this function are also lost on the next request.
public void ProcessRequest (HttpContext context)
{
context.Session ["Game"] = new Game (); // next time it is null
}
How do I persist values in Session state in ASP.NET ?
i have created a user control UserControl.ascx, in Code behind file of UserControl.ascx i have created an object of a class MyClass.cs,
Like
if(!Page.IsPostback) {
objMyClass= new MyClass();
}
but when i click on button of UserControl.ascx page and try to access objMyClass object then it set as null, so how to persist MyClass object when page PostBack, i wanted to keep object persist till the user access the page, when user goes out of this page then object should distroy?
[code].....
I have an object to hold some specific state information in my web application - I pass it back & forward between pages by making it a property of a basepage which works fine, but I lose it on postback.
Is there any way to persist this property without manually adding & reading it again from viewstate?
I'm building a web application that has a particular model representing some events. Users need to be able to add N number of people to a given event. Choosing people is handled by a partial view.
I'm trying to build a menu that displays when users click "add a person" to the event. Because the event hasn't been filled out completely yet, there is nothing in the database to persist between requests.
I also have validation logic on the event page.
My proposed solution is to add the form to search or add for people on the event form itself and have a submit button that sends the values that have been added back to the server, where I can store them in ViewData or Session.
Unfortunately, doing this flags the validation.
My second solution is to load a partial view responsible for loading the UI to add/search for a person. I could add a little code on the method in the controller that returns a partial view storing the existing data in a session variable or viewdata. Trouble is, I have to submit the form to do it--again tripping the validation!
I'm wondering if perhaps I chose the wrong tool to do this...because in webforms, there would probably be a postback and you would just perform an operation on that postback. I'd like to avoid rewriting the application in webforms and am wondering if there are ways I'm overlooking in ASP.NET MVC.
I have web service with reference of BO library in same application. My BO contains classes with some private members and respective public properties.
All of these private members had default values in a perticular class say Contact.cs.Now when I consume this webservice into Windows Application, these already assinged values to BO does not persists in the Windows Application code.
Is there any limitation such that you can serialize the default values assosiated with private members ?
Even I have tried to assign these values directly to the properties in a constructor of Contact class.
I have created a really simple custom control to render panels into a page. The code is below. When I use my control and add any webcontrol to it, after each page postback the contents of these child controls vanishes.
I must have missed something really simple but run the example to reproduce this. Can anyone please enlighten me as to why the controls are being 'emptied' of their contents, and how I stop this occuring?
Here is the code for the control
[Code]....
And here's how I am using it in a sample page:
[Code]....
[Code]....
I have a filter on my MVC web site. I display some records in a few different controller actions but when moving from one action to another I want to apply those filter values.
How can I persist values from controller to controller?
Should I use Session? TempData?
I am using Structure Map for IOC.
Maybe I could have a class that contains a Property for each Session Value that I use in my application and inject it on the controllers that need session?
My Problem Simply is when i create a Literal Control and I put at the text property Html Input
(<input type="text" name="textfield17" id="textfield17" />) and create an control button and But at the click event of the control button :
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Response.Write(Literal1.Text)
End Sub
and When I run the application I will find at the literal control a text box when i Type any text at it and click the button it return another Literal have only Html Input control without the text it entered
I have a quicktime movie(Size: 1.5 mb Format: .mov) that I would like to play on the site when the site loads.
This movie will melt in with a backgroundpicture so it is important that there is no borders of any possible control that can hold this QuickTime movie to put the movie in the exact place.
I wonder what control that can hold a QuickTime movie like this ?
i showed two column (Electronics,Photoshop) but i have six. i want to update their checked or unchecked condition in database (0,1) how do i do?
<asp:CheckBox ID="CheckBox1" runat="server" Text="Electronics" />
<asp:CheckBox ID="CheckBox2" runat="server" Text="Photoshop" />
<asp:CheckBox ID="CheckBox3" runat="server" Text="VideoEditing" />
<asp:CheckBox ID="CheckBox4" runat="server" Text="Gaming" />
<asp:CheckBox ID="CheckBox5" runat="server" Text="Coding" />
<asp:CheckBox ID="CheckBox6" runat="server" Text="Miscellaneous" />
How Can I retrieve values from TextBox before RowUpdating function is fired? I have GridView with update panel which is sorted by two dropdownlists and I need autopostabacks to filter and bind gridview. Now I want to update row in my gridview but I can't get values from controls I'm getting old values from database. Do you the way that I can use values from controls before updating the row?
View 5 Repliesi have multiple tables .
I have created one stored procedure where I am selecting the table values.
like
[code]....
I am using LINQ to retrieve the Data. So Using Linq I am calling the stored procedure.
So I ll get the table values in the C# Code the table values.
so in my UI i have 4 gridviews.
I want split the output values into four source and bind it to the grid.
I created a ASP.Net page with dynamic controls. These controls are added by the user. In the Page_Load event a table is created with few controls.
When these dynamic controls do a postback, I can't get the values of these controls, because in my HTML code they are not available.
I only get the id of the control which triggers the postback. But I can't find it with the command FindControl. All other controls, which a are not added dynamicly are searchable.
I have some problems with trying to read values on a postback. The fields, textboxes and dynamiclly created fields doesn't keep their values or I'm doing something wrong when trying to read the values. I get an error message:
System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="App_Web_m-6qot6q"
StackTrace:
at Sikt.RäknaVärden() in C:Visual Studio 2005WebSitesKalibreringscertificatSikt.aspx.vb:line 688
at Sikt.Button1_Click(Object sender, EventArgs e) in C:Visual Studio 2005WebSitesKalibreringscertificatSikt.aspx.vb:line 892
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Also, I get some other errors, such as "Name 'DropDownList1' is not declared" and "Name 'Label1' is not declared" I'm used to classic ASP and this is my first .net 2.0 (vb) application. I'm including some of the code (should be all relevant code)
[Code]....
I just uploaded an asp.net webforms site I've been working on to my ISP's servers. I have a simple page that allows users to enter schedule data. The problem is that when the user clicks the Add button and I try to process the values they've entered in the textboxes and dropdownlist in the click event handler, all the values are blank. For example, there's a DropDownList called uxStartTime on the page and after postback uxStartTime.SelectedValue is blank. However, the Response.Form[uxStartTime.UniqueID] has the proper value. I have EnableViewState="true" in the aspx page. This all works fine on my local machine, just not on the server. Can anyone tell me what's going on? I can use the Respons.Form syntax, but it's a little more verbose and prone to typos.
View 4 Replies