Databinding - Binding Custom Class Property From ASCX Markup?
May 19, 2010
I have an ASCX that inherits from a WebControl that has a 'CustomConfiguration' property of type CollectionConfigurationItem. This configuration gets set elsewhere in the code, so by the time it gets to the ASCX it is set up to how I wish to use the data. At this point I'd like to render out another control using this configuration, like so:
<modules:DataModule runat="server" CustomConfiguration="<%# Model.CategoryListConfiguration %>" />
However, breaking into DataModule always results in 'CustomConfiguration' being null, which is the default value for the property. I've tried adding a Bindable attribute to the property but to no avail, and when I set an EventHandler for the DataBinding event on the DataModule it doesn't even get called.
How can I set this custom-class-typed property from the markup or, failing that what's the second-best method of getting this to work?
View 1 Replies
Similar Messages:
Jul 16, 2010
I'll use Customer and Addresses as an example rather than explain my real objects. Say I have a repeater bound to a collection of Customers and one of the properties of Customer is an array of addresses. How do I bind to the addresses property? I don't even need to display this information I just want to use it in the Repeaters ItemDataBound event. So I tried to bind a hiddenField to the addresses property but all I get for every customer in the hiddenfields value is an empty array of addresses.
View 1 Replies
Sep 15, 2010
So what I'm trying to accomplish is this
[Code]....
The user control has public properties named accordingly and the page has protected properties accordingly which I've verified have the desired values.
For some reason the values are always empty strings or 0s in the usercontrol, no matter what the page property is.
View 1 Replies
Jan 21, 2010
Let's say I have an a .ascx user control. How do I get its HTML markup into a string?
View 5 Replies
Sep 13, 2010
I have a custom class downloaded from internet. In this class, there is a properties where by the value can be either 0, 1 or 2 only and I MUST assign it during run-time. But some how, this assignment only work using VB, and not C#.
[Code]....
In C#, it the compiler said "missing cast or conversion...". But in VB, it works perfectly.
View 12 Replies
Oct 9, 2010
I tried to add a custom property to the data model:
public partial class Department
{
public string ExtensionIdName
{
get
{
return Extension.ExtensionName;
}
set
{
}
}
}
It seems that it works, but when I bind the data to a ListView it shows all the properties except the property I added manualy (ExtensionIdName).
View 2 Replies
Aug 20, 2010
I created a GridView in code with a DataTable as its data source which worked fine. I have now moved the GridView creation into a .ascx file to make it easier to format.
For some reason this has started triggering the HttpParseException:
Databinding expressions are only
supported on objects that have a
DataBinding event.
System.Web.UI.WebControls.HyperLinkField
Original code:
// Set up columns for datagrid
var boundField = new HyperLinkField
[code]...
View 1 Replies
Jan 29, 2010
I'm building form validation controls for our C# ASP application. The bulk of the work is handled by a BaseValidator control (subclassing System.Web.UI.UserControl), which also has the markup for the validation output. This is then extended by subcontrols like PasswordValidator, that provides the Validate method and any extra fields needed by that validator control.
(The end goal is to have controls like <uc1:PasswordValidator ControlId="txtPassword" /> which we can plop into any form with minimum duplication.)
However, PasswordValidator.ascx.cs cannot access the form elements defined in BaseValidator.ascx; the only way I've found to do so is to duplicate the markup in each subcontrol's *.ascx file. How can I extend BaseValidator.ascx.cs and access BaseValidator.ascx's markup in the subclass?
View 3 Replies
Nov 14, 2010
I have a control that looks along the lines of this:
public class MyControl : Control
{
[Bindable(true)]
public MyControl MyControlParent { get; set; }
// snip
}
In my markup I want the following:
<tag:MyControl ID="foo" runat="server">
<tag:MyControl ID="bar" MyControlParent="foo" runat="server"></tag:MyControl>
</tag:MyControl>
The reason for me wanting to be able to name a parent like this is because I would also like to be able to do something like this:
or
<tag:MyControl ID="foo" runat="server">
<tag:MyControl ID="foobar" runat="server">
<tag:MyControl ID="bar" MyControlParent="foo" runat="server"></tag:MyControl>
</tag:MyControl>
</tag:MyControl>
or
<tag:MyControl ID="foo" runat="server"></tag:MyControl>
<!-- snip -->
<tag:MyControl ID="bar" MyControlParent="foo" runat="server"></tag:MyControl>
I've tried adding a type converter, but it fires before HttpContext.Current.Handler is set which means I can't search the page controls for the desired MyControl instance. Parent-child relationship in this control imparts certain inheritance of property values and doesn't (read shouldn't) necessarily imply a parent-child relationship in the control tree.
View 1 Replies
Dec 31, 2010
private ListDictionary parameters;
public ListDictionary Parameters
{
get
{
if (parameters == null) parameters = new ListDictionary();
return parameters;
}
set
{
if (parameters == null) parameters = new ListDictionary();
parameters = value;
}
}
can i set such property in the markup of ASP.NET page? and how?
i mean something like <uc1:CustomControl Parameters="?"
View 2 Replies
Mar 7, 2010
I'm just testing a simple databind expression with:
<div>
Now: <%# DateTime.Now.ToString()%>
</div>
According to MSDN:
[URL]
literal text <%# data-binding expression %>
should work.
When I compile, it's OK but I got a blank instead of Now DateTime.
View 1 Replies
Sep 3, 2010
Is there a way that I can extend asp.net to accept the markup
<c:MyControl runat="server" MyList="1,2,6,7,22" />
Where MyList is a List<int> or List<string> or even List<someEnum>?
So I want asp.net to parse automatically all lists (that can be parsed) generically.
I know I could take the way around it and make MyList a string, then parse that into a list, but then I just end up with more properties than I want tbh.
View 1 Replies
Feb 2, 2010
I've seen various controls in ASP.NET with "collections" of objects, which you can use markup to define. For example:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<Triggers>
<asp
/Triggers>
</asp:UpdatePanel>
In the above example, you can add any number of triggers, and they can be of any type that extends UpdatePanelTrigger. I'd like to do something similar, but with only a single item instead of a collection
View 2 Replies
Feb 25, 2010
I have a CheckBoxList in my page, with the DataTextField and DataValueField attributes set, is there an attribute that I can use to specify a property that indicates if it should be checked?
I'm hoping to just set the datasource, and not have to have any code behind to set the checked property. Possible?
View 1 Replies
Mar 9, 2010
I'm new to ASP.NET and can't figure out how to accomplish this...My code (that needs fixing):
<asp:HyperLink runat="server"
NavigateUrl="~/EditReport.aspx?featureId=<%= featureId %>" />
featureId gets defined as an integer in the backing code. I want href's like...
/EditReport.aspx?featureId=2224
...but instead I am getting...
/EditReport.aspx?featureId=<%= featureId %>
View 2 Replies
Mar 31, 2011
I have developped a usercontrol, but I can't seem to find how to databind on a property of the usercontrol in a detailsview.The property is defined this way:
<Bindable(True, BindingDirection.TwoWay)>
Public Property Value As String
Get[code].....
View 1 Replies
Mar 2, 2011
I have an asp.net repeater control with a series of asp:hyperlink's
<asp:HyperLink runat="server" ID="name" NavigationUrl="~/Pages/display.aspx?fileid={0}&user={1}" />
and then on the OnItemDataBound method:
fullname.NavigationUrl=string.Format(name.NavigationUrl, user.fileid, user.userid);
So that gives me a series of URLs in the repeater:
[URL]
OK, so with a simple proxy tool someone can replace either of the parameters with some OTHER number to get access to what they shouldn't see.
server-side validation and authentication aside, is there a better method other than passing parameters when trying to create a dynamic URL within a repeater?
View 2 Replies
Oct 15, 2010
I have an ASCX that contains
<my:Foo ID="Bar" runat="server" Value='' />
I want to set Value with textbox1.Text, but Value is an Int32. I am looking for something like this:
<my:Foo ID="Bar" runat="server" Value='<%= Int32.Parse(textbox1.Text) %>' />
But I getParser Error Message: Cannot create an object of type 'System.Int32' from its string representation '<%= Int32.Parse(textbox1.Text) %>' for the 'Value' property.Is there a way to do this on the ASCX file? Do I have to implement a TypeConverter for this property?
View 2 Replies
Feb 16, 2010
I have a gridview databound to an objectdatasource. Everything worked great until I changed 2 columns from asp:BoundField to asp:TemplateField. These are the UPC column and the Part column. I wanted to show a link button for each of these fields that take the user to another page. Now asp.net expects these two fields to be parameters on the update store procedure. Why is this? How do I get it to not assume these columns need to be passed to the store procedure?
Here is the code for the grid view:
[code]....
View 1 Replies
Oct 4, 2010
I have added a ListView to a web form and this code works when the data columns in the bound dataset have values:
<asp:ListView ID="picturesListView" runat="server"
GroupPlaceholderID="groupsGoHere"
ItemPlaceholderID="itemsGoHere"
[code]...
View 1 Replies
Mar 4, 2010
I have two Entity classes: Order and OrderItem. Order contains a navigation property OrderItemSet of type
System.Data.Objects.DataClasses.EntityCollection<OrderItem>
On an aspx page is a FormView bound to this EntityDataSource:
[code]....
When I run the application I get an exception pointing to the line DataSource='<%# Eval("OrderItemSet")%>' in markup and telling me:
DataBinding: System.Web.UI.WebControls.EntityDataSourceWrapper does not contain a property with name 'OrderItemSet'
What is wrong here?
View 1 Replies
Jan 25, 2010
using sqldatasource with a listview to insert and show results from an SQL server db i want to try using the LINQ datasource since it seems to be more flexible in codebehind.
My problem is this: i droped a listview control to the page and i created the Linq datasource in codebehind with vb. the issue that i am having when i ..Select d.columms name i get the error system.string does not contain a property with the name "columname".. if i ommit the column name then its works fine.. i get the error.. code below:
vb code
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim rowsCount As Integer
Dim showSearchForm As String
showSearchForm = Request.QueryString("tab")
If showSearchForm = "1" Then
[code]....
b.dbMake needs to work so that i can use Distinct ,, ia m using asp.net version:3.5 and IIS version 7.0 .. not sure what i am missing ,, but i did try alot of approaches,,1- checked the web.config file and it seems to have two assemblies and two namespaces for LINQ..2- used different databinding syntaxs,,and i searched a lot for the solution.. the last one i read the person ommited the name of the column,, i thought that wasnt the best solution.. also my dbMake column is comming up in the "intellisence" ..
View 1 Replies
Dec 10, 2012
have been using hyperlink field and bind it using eval
NavigateUrl='Test.aspx?cid=<%# Eval("cat_id") %>' but it is not taking eval value.it is showing eval in link
View 1 Replies
Feb 13, 2010
Quick question here. I'm sure it's possilbe, just can't get it to work.
I've got a gridview. In have a gridview. The gridview is bound to a list of my custom class. The class exposes a link to an image as well as the image's height and width. I have a Image Control in the gridview. I've bound the Image Url to the correct property. Now, I'd like to bind the height and width properties as well. But everytime I do that I get the following error:
Cannot create an object of type 'System.Web.UI.WebControls.Unit' from its string representation '"<%#Bind("GetImageHeight()")%' for the 'Height' property.
Here is an example of the tag:
<asp:Image runat="server" ID="imgProduct" ImageUrl='<%#Bind("ImageUrl")%>'
Height="<%#Bind("GetImageHeight()")%>" Width="<%#Bind("GetImageWidth()")%>">
</asp:Image>
[code]....
View 3 Replies
Mar 17, 2010
I am getting the following error :
DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'p2_area_name'.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'p2_area_name'.
Also, I need tp populate data from database in the Area dropdown but not able to do so..
[code]....
View 1 Replies