Order Of Precedence In Setting Properties?
Feb 4, 2010
Some settings in asp.net like viewstate can be controlled at the site (web.config), page, or control levels. What is the order of precedence? What happens, for example, if I set viewstate of site and page levels but on at the control level?
Also, is viewstate for a control the same as control state? Furthermore, what events to use for loading and saving viewstate for controls (is this the same thing as control state?) and also for custom controls?
Similarly, which events should I use to render controls? Is this PreInit and Load? Is this the same for custom controls?
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Jun 4, 2010
I am attempting to use the MapPageRoute feature in Visual Studio 2010 and .NET Framework 4.0 with a asp.net webforms application.
What I have noticed is that if I define a page route called "Default" like below and the page Default.aspx exists in the project, then the route does not work.
routes.MapPageRoute("Default", "default.aspx", "~/Page2.aspx");
routes.MapPageRoute("Test", "test.aspx", "~/Page2.aspx");
If I change the name of the Default.aspx in the project to Default_1.aspx,
then the route works fine.
There seems to be some order of precedence going on. Is there a way to make my route definitions evaluated first so I don't have to rename my pages to use the routing engine?
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May 7, 2010
I am using Microsoft's MVC design pattern and I have a method in my controller, which sets the data source of a gridview. Whilst I can bind all the other values in the gridview, I am stuck setting 4 hyperlinks. The hyperlinks need to work in the explanation given in the link below: [URL]for forcing downloads to keep the location of where files are saved to private, which I want set in the controller.
To fully explain what I am doing, in my controller for the gridview, I am setting the gridview's data source using ICollection, which is an object containing results from a query. From this collection, I extract a value which has the name of a folder which contains a number files. So, what I have done is to cast my collection to a object, to get folder name and then use a foreach loop to get each folder name. Then to get the files inside each folder, I use Directory.GetFiles, which returns a string array - I wrote string[] files = Directory.GetFiles(ConfigurationManager.appsettings["filepath"]+folderName); . I have set 4 properties for each Hyperlink I want to set.
It is at this point where I am stuck, because even though I can get to the files, I am unable to set the Hyperlinks to these files. Each time I try an set the NavigateUrl property, I get the error message Object not set to an instance of an object. Plus, I have two other issues to resolve:1) Even though there are 4 hyperlinks, not every hyperlink will be set. In other words, if there are only two files in the folder, I only want to set the appropriate hyperlinks. So, how can I iterate through the string array, and get each value inside the array to do a check?2) When I set my Hyperlinks in my controller, how do I simply pass the file and keep the file's actual storage location hidden as given in the link [URL]
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Oct 8, 2010
Is there any easy way to set properties of a Page (or UserControl for that matter) from *within itself*?As an example, I have several .aspx pages which inherit from exactly the same code-behind class, but I need to be able to pass different properties to the class to make them do the correct thing for the specific .aspx.
The only way I've found to do this is to create the following - which works fine, but doesn't feel right....
<script runat="server">
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Init
Me.MyProperty = True
End Sub
</script>
It would be a much nicer, simplier and easier solution to be able to be able to set MyProperty = True somewhere... is this possible?The option of hard-coding properties within the class for the "parent" page is not going to work for my situation.
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Dec 6, 2010
I have the following property:
[Code]....
I want to be able to have the user see the available options when they try to do something such as DateRange = .... (i want intelllisense in here and I can set the values). Is this a possible functionality? I am using VS 2008 .NET 3.5
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Apr 20, 2010
I though it would be very simple but I can not get it today.I have a user control, with a grid control contained in it.
public Unit Width
{
get
[code]...
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Jan 15, 2010
i have a WebControl class called ContentFrame that has a Header property and a Content property.
public WebControl Header {get; set;}
public WebControl Content {get; set;}
Now let's say that I have form x and ContentFrame is on the form. What I want to do is be able to set the the Header and Content properties during design time in the source
<cc1:ContentFrame ID="ContentFrame1" runat="server">
<Header>
<WebControl></WebControl>
</Header>
<Content>
<WebControl></WebControl>
</Content>
</cc1:ContentFrame>
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Jan 6, 2011
hyperlink in new windows and setting properties
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Nov 9, 2010
Regarding these two approaches:
<asp:Label ID="Label1" runat="server"><%# DateTime.Now %></asp:Label>
and
Label1.Text = DateTime.Now.ToString();
Which do you use and why?
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Dec 15, 2010
I have some user controls which have properties which need to be set from a form on the page
<uc1:MyPlugin
ID="MyPlugin2"
runat="server"
Property1="Hi"
Property2="0" Property3="<%=Property3%>"
Property4="<%#Property4
%>"
/>
Property3 and Property4 anre both public properties of the page I am on and the user control
Currently the code complaing about Property3 saying it cannot create an object of Int32 from '<%=Property3%>' and Property4 always gets set to 0 (the default)
I do not wish to use the c# code to set these values as this Plugin will be deployed with a CMS which I have no control over
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Mar 16, 2011
I have a DetailsView which has two fields - one that is visible, one that is not. The first the user fills out, the second I want to auto-populate. Unfortunately, I haven't been able to find a way to set the value in this second invisible field. I've tried adding code like this to the Page_Load:
If Not IsPostBack Then
DetailsView1.DefaultMode = DetailsViewMode.Insert
Dim txt1 As TextBox = DirectCast(DetailsView1.FindControl("Type"), TextBox)
txt1.Text = "administrator"
End If
But this returns an error of "Object reference not set to an instance of an object." how to accomplish this - either using the method above or another method? The hoped for end result is that when a new record is inserted via the DetailsView that this record will include the username (entered by the user) as well as the "type" of "administrator"
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Jan 11, 2010
We are trying to use a BasePage class (which inherits from Page) to populate and set the Meta Keywords and Meta Description Tags. I am using masterpages and below is an example code extract... According to examples on the internet, I could then set this also via the Page Directive using the MetaKeywords and MetaDescription properties, but they do not appear.
I have tried setting the CodeFileBaseClass="MyNamespace.UI.BasePage" but this does not work either. Using debug I can see that the BasePage classes' MetaKeywords and MetaDescription properties are not being set within my content page. I can access the properties but not set them.
== BASEPAGE CLASS ==
[Code]....
== PAGE CLASS ==
[Code]....
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Oct 4, 2010
I have a database which holds the path of an image. It also holds the recomended height and width of the image. My question is how can I set the height and width properties from my database? I have tried the following with no avail:
[Code]....
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Jan 25, 2011
I have a user control (i.e. ascx) that comprises of two related list boxes (i.e. once you change the selected item in one list the contents of the other list update). I'm adding this user control dynamically to a page on the click event of a button (i.e. using LoadControl).I wish to set the list box datasource properties, as well as the default selected item of the parent list from my parent page so I created public properties in my user control to accomodate this. I also created an event in my user control that notifes the parent page when the selected item changes in one of the list boxes so I can update the contents of the other list box.
I understand that I have to recreate the user control on every postback in order for it to function correctly but I'm not sure exactly how I should be doing it. I've shown below what I have currently - whilst it works the problem is that on postback I'm always creating the user control with all its default properties and then updating the properties that need to change(?). For example, when the choice in theparent list box changes the datasource of the list box is set twice (once in AddControl and then again in OnParentChanged)? As the contents of the list boxes originate in a database it means I'm making unnecessary calls to the database (unless I do some something like store each unique set of data in the ViewState).
I'd be very grateful if someone could review how I've done things and illustrate how perhaps I should be doing things. I'm not sure if the way I've done this is considered the 'correct' way. For example there may be a better way of doing things would avoid setting the properties twice? I'm a bit unsure of the way I've set the datasource properties of the list boxes and bound them. I wished to set the datasource from the parent page because I might have a second user control on my page that may also use the same datasource and I could reuse it (as opposed to each control making its own call to the database) so I'd like to keep this feature if possible.It would be great if posting code in reply that you use my example as a guide so I know what you're referring to.Here's the code for my user control:
[Code]....
[Code]....
Here's the code for my containing page:
[Code]....
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Oct 23, 2010
im using a webusercontrol (hide.ascx) it has 2 buttons btn_hide,btn_expand
and in my other forms of all like(products.aspx)customers.aspx,orders.aspx
im using a panel conrol(pnl_products) where in im placing all the input controls.
i want to find the panel control in hide.ascx page and to set that
panel.visble=true/false property in this page.
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Nov 7, 2010
In my ASP.NET application I am using a lot of ObjectDataSource controls. I want to set the following three properties globally for all ObjectDataSource controls:
EnableCaching="true"
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Mar 11, 2011
eI am using themes to set the Gridview font size and font name. I need to set the boundfield to the same font and size as I want it to be application to all the columns in gridview. How can I specify the boundfield properties in the themes.
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Jan 6, 2010
[Code]....
Once the template is loaded and cast back to the TabHeader class, it's null. How can I load that control, set the properties, and use it as the template? Or is the only way to go about doing this to create a custom class?
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Jan 7, 2010
I am in need of some assistance in regards to how to best set the values of properties for a Web User Control which is being included into a cell of a GridView with dynamically created columns. I have tried a few different approaches, but can't seem to get a satisfactory result. Also, to be completely honest, I am not really sure if I am using best practices for what I am trying to accomplish.
First off a little background:I have a GridView for which we will never know the exact number of columns at run time. The columns are predicated by user selection. I am creating the command text for the DataSet on the fly and then looping through the columns of the resulting DataTable in order to use custom TemplateFields. This works ok for just printing out the row values but not so much for when I need to insert the Web User Control into a cell.The Web User Control is in essence a collection of image links which are used as a "Quick Nav" tool. I need to pass the values of 2 fields from each DataRow to the control via properties (for example, CustID and ProductID). I am using custom TemplateField classes inheriting from ITemplate for displaying my fields and extending the DataBinding event like so: [Code]....
This won't work for my User Control as DataBinding is called after the control is loaded into the page and I need the properties to be set before the Page_Load event of the control is fired.Is there a GridView event I should be looking into instead such as RowCreated or RowDataBound? Or should I modify how I loop through the DataTable by doing rows first, then the resulting columns as I've seen done elsewhere?
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Feb 4, 2010
In ASP.NET, what is the order of precedence with setting viewstate and similar properties? These can be set at web.config, page level and also at the control. If I turn it off at both web.config (global), page level, but on at the control level, for example, what is the result?
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Jan 14, 2011
I need to set file extension precedence. I want the browser to show default.html before default.aspx. Is there a way to set this up in a web.config file?
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Nov 29, 2010
I am having the doubt in string manipulation. I am having the following string value string input="(Grade=A && Standard='12')||(City='ABC' || Region='India')&& (Name=='John')"; I would like to do the precedence condtion so that i want to split the above string in the followung form to identify the precedence group.
Grade=A && Standard='12' --arr(0)
|| --arr(1)
City='ABC' || Region='India' --arr(2)
&& --arr(3)
Name=='John' --arr(4)
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Jan 23, 2010
I have 5 hard corded texboxes in a page in a sequence with sequence Number . Now i want to add re-order /re-arraning functionaly .. but i can't use ajax reorder list because i have 5 hard corded texbox. how can i maintain the order in Insert/Update cases. And also suggest me control that i can use, another than ajax re-order list. coz i not using any list items i have hard corded items on the page.
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Feb 7, 2011
The AjaxToolkit has a ReorderList. I'm searching for a jQuery solution that does the same and found this page. I would like to change the order of divs (vertically) and upload the new order to the database (ajax).
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Oct 22, 2010
I have two table Order and Order Detail.
What i need is i need to bind last 10 Order in Gridview/details view with paging, and the same order detail also fetch from database and shown in another gridview.. if user click any oderNo in first Gridview/DetailView then i need to show Respective order detail in anther gridview..
without postback coz we already fetch 10 order with orderdetails from the database..and if user click next 10 orderNo using paging then again we need to load 10 orderNo with respective orderdeatils from database like this going on....as well as let me know how to take print of particular oder and order detail....?
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