public static string SEARCH_STRING = "searchkey";
string key=Request.QueryString.Get(SEARCH_STRING);
How to change the above code to make SEARCH_STRING be accessed using a Property(get; set;) instead of a public variable
How do declare a public variable .aspx web page that can be used in all the pages within my web application? And/or create a Public Sub?
View 3 RepliesI have a question about C Sharp ASP.NET:Is there a difference (in code speed, resources) between:public static variable declared in public static class MyGlobals in a 'Code File' template;and the variable declared in a normal 'Class File' template;I use this variable in 2 different Class Files and also in _Default Page codebehind cs file.In fact in my case I need about 20 global variables of type List<string>.
View 9 RepliesI have a web application which uses a session variable to store the logged in userid. If no user is logged in, of course this variable will be empty and the contents displayed on my website are meant for guests. If there is a user logged in, the user specific controls/access/links will then be a displayed.
I am now having issues with my hosting where on shared application pool, the worker recycle is triggered every 90 minutes, this will clear sessions causing all my users to be logged out. I opted for a dedicated application pool, which got worse because I am only allocated 50MB memory limit and if this is reached, the worker recycle is triggered and I lose my sessions again. I have tried as much as possible optimization techniques, e.g. dispose where possible, close connections, disable viewstate for static controls etc but my memory per instance keeps building up from page to page without any signs of improvement. I don't use loops nor store huge objects like bitmaps etc but my sessions are now gone even faster than 90 minutes in shared application pool before.
I have considered using SQL Session State but there isn't a simple guide on using this with MySQL. I am getting desperate and considering using a public variable, a string as a replacement to store logged in user id instead of in a session variable. I am pretty sure this will solve my issue with sessions being recycled but are there any negative consequences of doing this? One problem I can think of is if the user closes the browser, the system will never know that the user is now logged out and this public variable should be nothing. In this scenario, will the GC eventually clear this abandoned public variable.
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The variable is assigned a value in another class like this:
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I like to handle and compare a lot of date times in my repeater even I have to work more than one time with the same.
It's a bit ugly, to cast everywhere the Eval("MyDate") like ((DateTime)Eval("MyDate")) to substract 2 datetimes or to compare it, even if you have to do this more than in one operation.
I thought of saving all the evals in a var at start of the repeater?
DateTime mydt1 = Eval("myDate");
DateTime mydt2 = Eval("mydate");
after that, it's easy to do any operations in the whole repeater. Hope you understand my idea. Is this possible? I tried short but everytime errors.
mydt1 - mydt2....
I want client access a data center but without use database , so I want my web app can retain a global or Application session variable, that contains the data, every client can access the same data... I am try to declare in golabl, but seem it only can store String but others ..
View 5 Replies to define a variable/property of more than one type. Let's say i want a property TextWebControl that is a WebControl and also implements Web.UI.ITextControl(f.e. like a TextBox or Label). But i don't want to enforce that it is a TextBox or Label, but only one that inherits from WebControl and also implements ITextControl so that it also would work with controls added in future releases of .Net-Framework.
.Net-Framework 4.0
Edit: I have retagged the question and added VB.Net because it's my default language. Normally it's no problem for me to understand C# also, but i must admit that it's difficult to translate generic stuff to VB.Net without experiences and it's also better documentated in C# than in VB. So i would appreciate(and aceept) a working example of a VB.net generic type of ITextControl/WebControl.
From Marc's answer i understand that i need a generic class. But how do i instantiate it in SomeClass? This won't compile:
Class SomeClass
Public Property info As InfoControl(Of WebControl, ITextControl)
End Class
Is it possible to set the property of a server tag from a c# expression, i.e. something like <asp:TextBox Width='<%= [some c# expression] %>'/> I though this would be pretty straightforward, but I can't get such an expression to run.
View 2 RepliesI have to define a global and unchangeable variable in a web page. I used static variable but its content is the same for all users that use the page and it is bad. I dont want use Session variable.
View 5 RepliesHow can I define a Dynamic ViewModel property in MVC 3 inside an action filter?
I am looking to have something like but inside the ActionFilter and not in the controller:
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How could i set compulsory property of a user control to be set when user adds user control to form.
View 1 RepliesIm trying to learning asp.net & c# and am working through a tutorial that asks me to:
"Add 9 public properties of type TextBox to the code-behind file. There should be one public property for each TextBox control on the page. Each property should have only a get accessor that simply returns the TextBox object that it corresponds to." Ive added code below but im not really sure if what ive added is what is asked for,
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I have a publice variable to be used in the same webpage. when the user click on button 1, it does some process and assign a value to my public variable. After that, the user can click on button 2 which needs the public variable value to function. However I see the value of the public variable is 0 when I click on button 2.
So I have this object I'm creating, just to hold some string and boolean data that I want to pass to the second page. So I have a class file:
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And I'm setting values from form controls, like this:
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So here is the really weird part: if I try to set a label's text property equal to objPrimaryScreeningData.myMemberVariable after selecting it - there is nothing there. I'm sure it's a stupid mistake - being self taught stinks.
I am trying to use a property from the code-behind to populate a textbox instead of using in the code-behind textbox.text=. I am using vb.net. Here is the code for the aspx page:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContentPlaceHolder" runat="server">
<asp:TextBox runat="server" ID="roleTextBox" Text='<%# CurrentRole.Name%>'></asp:TextBox>
</asp:Content>
Here is the code behind code:
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When I run the page the text box is empty.
I have a problem to pass along public variables from C# code to the HTML code. I assign the variables in the Page_Load event and then pass along them to the Panel and Image control in the HTML code. Though I get this compileerror for the Width: "Cannot create an object of type "System.Web.UI.EbControls.Unit" from its string representation '<%setWidthImage%>' for the 'Width' property."
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I'd like to know how to declare a variable in my code behind page that I can use in all the subs of my code behind.
I tried in after the Partial Class declaration to declare a "Public String" :
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and to use it in my subs but when I use it from a sub to another I loose the value affected in another sub.
Is there a way to use a Public variable from a sub to another (I'm actually using a session variable in order to do it and I'm not sure it is the best way)
I have this public property in the codefile of an aspx page:
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Then in that aspx page I have a usercontrol (.ascx), how can I access the above public property form its codebehind?
I am trying to declare a public property and access it from another page. I can't seem to be able to declare it. I'be tried putting in the code behind but it gives me errors.
View 2 RepliesI have a property on my Global.asax.cs class that I need to access from a business class, i.e. using HttpContext.Current. How do I do this? Global.asax.cs (in a web project)
public partial class Global : System.Web.HttpApplication
{
public static ProxyGenerator Generator = new ProxyGenerator();
Business class (in a separate business project)
var generator = ((Sei.Osp.Web.Global)HttpContext.Current.ApplicationInstance)
This obviously doesn't work and I don't want to reference the whole web project in the business project as it will create a circular reference (the business project is already referenced in the web project)
UPDATE:
To clarify - the property I'm creating holds an instance of the Castle Dynamic Proxy Generator class. I've read that you shouldn't just create this all over the place. So I thought I'd create it in my Global.asax.cs and then just use that instance wherever I need to create a proxy class (I'm using it to do AOP) Is there a better way of doing this?
<asp:TextBox ID="TextBox2" runat="server" Width="118px" ontextchanged="TextBox2_TextChanged" TodaysDateFormat="dd/MM/yyyy"></asp:TextBox> <ajaxToolkit:CalendarExtender ID="TextBox2_CalendarExtender" runat="server" Enabled="True" PopupButtonID="ib1" TargetControlID="TextBox2" DaysModeTitleFormat="dd/MM/yyyy" Format="dd/MM/yyyy" > </ajaxToolkit:CalendarExtender>
ajaxcontroltoolkit.calendarextender' does not have a public property named 'DaysModeTitleFormat'
How it will be removed??????
I have a variable in an aspx file I need to use/recover it's value into an ascx web control that's in this aspx file. It's possible to do it? The aspx dynamically loads web controls depending the scenario, so this web control not allways is loaded.
View 2 RepliesI have declared a variable as public (Visual Basic 2008). As a result I can call its value in all subroutines. However I cannot change its value in any of the subroutines?! How to do that? The variable I'm having trouble with (see code below) is called 'antwoordbestand' and I want to change its value in subroutine startKnop_Click.
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I have created a very simple calendar user control that contains a public property which is used to define which month/year to display. My calendar control is placed inside another ascx control (the wrapper control essentially), which includes LinkButton controls used to toggle the calendar control forward and backward one month at a time.
If I explicitly define the SelectedDateTime property of the calendar control in the wrapper control at design time, the proper month/year are displayed by the calendar control. However, when I try to set the property value at run time using a Click event on the previous and next LinkButton controls, the calendar control never picks up the new SelectedDateTime value I try to assign to it.
When I run the code in debug mode, the Click event of the LinkButton always happens last - after the value of the SelectedDateTime property of the calendar control has already been set to default and rendered. What am I missing?
The calendar control is placed in the wrapper control just like any old control:
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