i've got a project requirement in which a webpage developed in asp.net+C# - (used for information gathering from the end user) can be changed to a report view of the same page (after submitting) with dynamic html formatting without affecting the original page can it be done by creating an object of that webpage and modifying its properties or creating an instance of the page or something like that.
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apologies beforehand for what can possibly be a daft conceptual question. I have an ascx control that has a bunch of ASP labels and buttons in the ascx page and some other public methods and properties in the code behind. When I drop this ascx control in a page it all works fine. I now have a page with a placeholder and I am trying to dynamically create an instance of my ascx control and put it there. I then reference this control in code and while all public methods and properties are available (ie MyControl.TitleString = "Hello";MyControl.DoSomething();) none of the ASP controls are. Rather, they are all null. So MyControl.buttonSave is null, MyControl.LabelTitle is null, etc. Is this by design? Am I missing something? If not, what's the point of being able to create dynamically do this?
View 8 RepliesI am building a .net page and need to display some data residing in a database. Some of it's working, some not. I would like to use a table to display the data with the format below..
Table
row - question data
row - answer (count)
row - next answer (count)
row - BarChart representing the answer counts for question
row - next question data
row - answer (count)
row - next answer (count)
row - BarChart representing the answer counts for question
The question data and answer count rows are generated with no issue. However, the rows containing the barchart are problematic. Not sure how to create a new instance of a chart on the fly and hook in all the methods, etc. and get the control added to and displayed in the tablecell. Been looking for examples to create the chart on the fly with no real results.
I have been tasked to create a simple box-to-box diagram using some data I retrieve from a SQL database. I will have to apply text tag names to the boxes and connectors.
Anyone ever build a Visio diagram dynamically on a web page?
I Have written code to create instance of an AUTOCAD application.
private void InitializeAutocad()
{
try
{
acApp = (Autodesk.AutoCAD.Interop.AcadApplication)Marshal.GetActiveObject(progID);
}
catch
{
try
{
Type acType = Type.GetTypeFromProgID(progID);
acApp = (Autodesk.AutoCAD.Interop.AcadApplication)Activator.CreateInstance(acType, true);
}
catch(System.Exception ex) { }
}
}
but it throws the above error.
I am trying to create a generic list of objects using reflection. The below code throws an error Cannot create an instance of an interface. . I could change the IList to List and it works fine, but I was wondering if there is way to get this working with an IList.
var name = typeof (IList<T>).AssemblyQualifiedName;
Type type = Type.GetType(name);
var list = Activator.CreateInstance(type);
I need to create .net membership user instance for a database living in a different server than the one I'm coding in. What is the best way to do this?Should I do it though Sql Server stored procedure? or should I use a separate provider (therefore having 2) in my web.config?
I need to create this user without using the "create user wizard".
The way we have to update our site now is to create a copy of the website project locally. Make changes. Then take the dll and any other new files and copy them to the project on the server. Sometimes they want us to work on something they need uploaded right away and other times work on something that needs to be uploaded in the future. So I have to do silly things to give them what they want now and exclude what I am working on for later. What is the best way to resolve this? I just wanna have to upload a piece of the project and certainly not the a whole new dll everytime.
View 1 RepliesSuppose that I have a text box where I am asking for a customer number. I would like to create a lookup option. Where another webpage comes up and I can search for my customer using various options: by name, city... whatever and I would like the webpage to return the customer number and place it into that text box. How do I go about creating this? In addition I do not want this to be browser dependant. I don't want it to be for IE only. (I already know how to make the one for IE only) I am hoping there is an AJAX functionality here or something...
View 5 Repliesvs asp2008 instance cant recognize the sqlExpress 2008 instance on my machine
I have wonder if you could try to help me with the fallowing issue:When trying to add a new sql server connection (local or remount) from VS(visual studio) 2008 express - on the add connection dialog
box: server name: are Empty!!
The vs couldn't point to any database, like dont recognize the sqlExpress 2008 instance i got on my machine.
1. Have tried to "play" with sa property's(from sqlS: Databases: security: login tree folder) and with the sql
s windows service: stop and restart
2. And so with the target db.
3.
On the services.msc
The sql server express the status is started.
The sql server agent status is disabled and don't have the option to start.
The sql server explorer status is disabled and don't have the option to start.
4. And so reinstalled the asp.
I am working on a financial portal and I am having a problem..I don;t know what to call it so i mentioned it as an 'unknown to me' problem..I have a webpage..whenever I click on any button on my webpage, the request goes through..but nothing show up on the webpage..then If I click on another link and then again come back to previous link,then only I see the results of button_click..
e.g.
I have a currency conversion and investment form..so after filling up the form in following way and if I click on "INVEST" then nothing shows up..
so now if i click on any other link and go back to 'buy currency' link I see the result as 'investment successful'
I developed an application form which includes some textboxes for input. When the user click on the button the following tasks has to be done.
1) If page is valid all data should be stored in database
2) A new webform should appear on the same window and the some content of the application form should be displayed in it.
3) When clicking on browser back button it should not post back to previous page.....
I did the first task..and i don't know the code for the remaining tasks. Here is some information
.aspx button control code
[code]....
I opened new webform by using Response.Redirect ("submit.aspx"). Where submit.aspx is the form to be opened after data stored upon the button click in application form.
I would like to allow users to call my ruby on rails app as a service which returns a 'div' with html content in it, and embed that div into their app (which will not be a rails application).
For example, assume someone has their own php website that has a header/footer template that gets rendered, and a content area of the page that they need to fill based on some html I generate in my rails app. I would like to allow them, from php, to call to my website, get the 'div' I generate, and embed that as html in their php page.
What I'm trying to do is host a service on my site that returns some html content, but actually show that content as part of another site, so that the end user only sees the other site and never really knows about mine.
Also, I can use javascript on the client to do this if that is the only way, but I would prefer the php app to handle this at the server if possible so the client gets the html embedded from the original server and it looks like it all was generated by the php script that generated the entire page. I also want to avoid using an iframe.
am trying to get URL of the page that referred the request to my page, i tried the "
[Code]....
[Code]....
[Code]....
[Code]....
I want to create a web page that will allow user to create a web page. The admin user should be able to give access rights to the controls which the user will place on his web page.
View 3 RepliesI have a user control with the following in the ascx page: <asp:TextBox ID="TextBox" runat="server /> And in the codebehind page, I have the following (Height and Width are public properties):
[Code]....
However, I'm getting a "object reference not set to an instance of an object" every time this method runs, and when debugging, it seems that TextBox is still null, even at the PreRender stage.
Is it possible to restrict users from adding more than one isntance of a webpart on a page?
View 1 RepliesI am getting this error (Object Reference Not Set To An Instance) when trying to add a new record to a gridview. Kindly have a look and suggest what could be the problem here:
The Code:protected void Button1_Click(object sender, EventArgs e)
{
BeginAdd();
[code]....
I get the error in string order_code defination line.
The web app in question provides a UI for editing a client (in the business sense, not the browser sense), identified by a ClientID. I store the ClientID in Session, which gets passed from page to page, along with a number of other pieces of data in Session. Works great.
The problem is that if the user opens a new browser window using Ctrl N or File->New Window (in IE), the new window comes up with the same page as the current page, with the same session info. Then if the user navigates to a different client in the 2nd window, the ClientID in session refers to the new client. If they go back to the original browser window and save, the original client gets saved using the 2nd ClientID, and all hell breaks loose, because now the data from the two jobs are intertwined.
I have enabled trace and verified that the new browser window uses the same SessionID as the original. If an entirely new instance of IE is opened, it has a different SessionID, so is not a problem. I have not yet investigated other browsers, such as Chrome or Firefox.
Is there any way to determine if a browser instance is opened for a web app which is already open in another window or tab? Or to prevent that from happening?
I have window application and I want to use same instance of opened forms from application. I know this is possible with singleton pattern so if you have code example of singleton pattern then
View 2 RepliesFor 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 trying to get dropdownlist value in cs page but getting error "Use the new keyword to create object instance".
DropDownList tn = (DropDownList)Page.FindControl("DropDownListTRAIN_NO");
string t1 = tn.SelectedValue.ToString();
i am trying to enter a value into a texbox that is placed inside a user control called CollectionRequest. i have referenced this user control in my code behind and created an instance of it but i seem to get the above error when i try to enter some manual text. code as follows:
protected CollectionRequest collReq;
protected void Page_Load( object sender, EventArgs e )
{
collReq = (CollectionRequest)LoadControl("~/CollectionRequest.ascx");
TextBox _txt_address = (TextBox)collReq.FindControl("txt_Address");
_txt_address.Text = "thisi is an address";
control has been referenced in source file
<%@ Reference Control="~/CollectionRequest.ascx"%>
i am caling this code in my Approval.ascx.cs code. both the user controls are displayed together in the default.aspx page one above the other.
I have hosted my web forms files and reports files two different IIS instance in same server. When user login i keep username inside session variable. According to that session variable i checking roles each web forms page load event. i share session variable between two difereent IIS instance in same server?
View 1 RepliesI got this error.
This application for delete multiple record in gridview using Check Box.
. I tried before one application, that one finally worked,
That application also error occurred, but after some time it execute(automatic I didnt do anything) correctly,
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error: [Code]....
Source File: c:InetpubwwwrootAdditionUpdateDefault.aspx.cs Line:155
