Suppose I have a user control MyControl.ascx, and I put it in the Default.aspx like this:
<uc1:MyControl id="MyControl" runat="server">
Now in the code-behind of Default.aspx I do this:
[code]....
The problem is that even I do not render MyControl, it is still being initialised and goes through the entire ASCX life cycle (OnLoad, etc). Is there a way to prevent the control from being initialised at all?
I have a page on which I have two forms, which really act as a main form and a subform. I can put a Cancel button (which removes any inputs I have made in the form) on each form. But I want to put just one Cancel button that Cancels the input for both forms. I know that there is a Form.UpdateItem, Form.InputItem, and Form.DeleteItem, but I can find no Form.CancelItem. Is there a way to emulate the Form.CancelItem programmatically?
View 3 RepliesI am using a LINQ to SQL data source for a ListView and perform a validation check in the Listview ItemUpdating event:
[Code]....
This works great and keeps the user from updating the record with invalid data.However, when I hit cancel after this operation, it saves the text in the box rather than cancelling the operation. Here's my code for the update button:
[Code]....
Update Function:
[Code]....
I do not handle the cancel button event, as the cancel operation has worked fine... unless someone enters incorrect information and e.Cancel is set to true.What am I doing wrong? Is it the mixture of using the LINQ Datasource and doing my own updating?
I have a text box that I am reading mulitple employee names into. If the user enters a name that does not belong to an employee I want to cancel the item_updating function. Here is my code:
Dim RECIPIENTS() As String
RECIPIENTS = RLIST.Split(";")
Dim NAME As String
[code]...
is it possible to have a cancel button on a LoginView control ? If so, how can this be done?
View 4 RepliesWithin a repeater control, is there a way of de-binding certain items before the page is rendered?
Currently we have a collection of items being bound to a repeater and if the item is not part of the current language, we hide the item.
I'm wanting to be able to do a count on the repeater and get a valid number back. A count that doesn't also include the hidden items.
Is it possible to de-bind specific items perhaps in the ItemDataBound event?
Update
For each item in the collection we're binding, we check the database during the ItemDataBound for further information about the item, such as language etc. This is currently stopping us from filtering the bound data before binding it.
When the webpage is in Edit mode, I need to warn the user "Do you want to continue, You may lose you changes" with Ok cancel buttons.I want only one ConfrimButtonExtender control, and I can use some kind of delegation. If any of the Navigation links are clicked, I want to call a javascript method which will trigger the click event of the main Orginal extender button. The code works fine. When I click the any of the navigation links, the Extender controls are fired and Confirm popup is shown. But the Issue is Cancel button is not working. If I click the Cancel button, the page still navigates to other pages
View 2 Replieshow reset the value of asp testbox and dropdown list on button click event by using j query.
The button code is
[code]...
Is there a way to check if a user clicked the "Cancel" link button in a DetailsView control?
View 1 RepliesI've a control
<asp:Button ID="btnAjax" runat="server" Text="Ajaxified" OnClick="btnAjax_Click" />
Now from the code behind I want to change the ID of the button
btnAjax.ID = "newButtonID";
But it is now working. Is it possible at the first place?
EDIT
I've created the control in the HTML mark up and not through code.
I am trying to add controls on the page from the backend in the page_load stage. Here is my code:
foreach (FileInfo fi in dirInfo.GetFiles())
{
HyperLink hl = new HyperLink();
hl.ID = "Hyperlink" + i++;
hl.Text = fi.Name;
hl.NavigateUrl = "../downloading.aspx?file=" + fi.Name + "&user=" + userIdpar;
Page.Controls.Add(hl);
Page.Controls.Add(new LiteralControl("<br/>"));
}
The error which I am getting is on 'Page.Controls.Add(hl);' and here is the explanation: The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases. What can I do so I can fix this issue.
I have a blank/unbound GridView control on my form and I am binding it in the code behind like this:
GridView1.DataSource = _dataSet
DataBind()
Running this code populates my GridView control with all the columns and data that _dataSet has. I want to display only some of the columns, change the column names, and rearrange some of these columns too (i want the last column from the actual sql database table to be displayed first in my GridView).
I have a custom templated control as follow:
[Code]....
How do I programmatically add control into the templateOne?
I am adding validator controls to a page on runtime. When I do this it seems to work except for one thing: the page doesn't get validated (the Validate() method is not invoked) - neither on the client nor on the server. However when I can Validate() myself, the validators do their work and generate the required errors. So it looks like the simple fact of adding a validator programmatically causes the page validation to not take place. My page does have validators in the aspx file - they work fine when I don't add any programatically, but as soon as I do add one programatically, the Validate() method is not invoked.
The way I add the validators is by creating an instance, giving values to all relevant properties, and then adding to the page control collection. I tried this in the PageLoad, and prior page-cycle events. The same result occured. I also tried with or without having a ValidationGroup, and with or without having a ValidationSummary control on the page. The same result occured.
I have a user control that needs to load a child control when a button is clicked. The trouble is that it has to request the control from another class.
So in the button click event, I call the function to get me my control, and add it to the page, like this:
UserControl ctrl = ExampleDataProvider.GetControl(some params...);
myDetailPane.Controls.Add(ctrl);
The GetControl method looks like:
public static UserControl GetControl(some params...)
{
ExampleDetailPane ctrl = new ExampleDetailPane();
ctrl.Value = "12";
ctrl.Comment = string.Empty;
return ctrl;
}
This isn't working due to the page's lifecycle - the Page_Load of the child control gets fired and its controls are null.
I have programatically created a control. Now I want to wrap that in a <span></span> tag.
View 1 RepliesI have code to add a control to page in Init event. I hit error "The control collection cannot be changed during DataBind, Init, Load, PreRender and Unload phrase".
The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases.
This may be a very dumb question but I can't seem to get it working. I use at many places the following syntax for dynamically binding a property of a control in aspx file to the resource entry, e.g.
<SomeFunnyControl Text="<%$ Resources : ResClass, ResEntry %>" />
I want to do a similar thing with a class containing some constants, something like
<SomeFunnyControl Text="<%= MyConstantsClass.MyStringConstant %>" />
But this doesn't seem to work, it simply sets the text to the exact expression without evaluating it. I am using ASP.NET 3.5 btw.
I have tried the databinding approach but I get an HttpParseException saying Databinding expressions are only supported on objects that have a DataBinding event.
I want to add event handlers programmatically to the server controls rather than using their predefined OnClick properties, etc. But which would be considered a better practice for defining handlers:
Define them in Page_Init
Define them in Page_Load
I've an asp menu on my site. I need to dynamically populate this from my database depending on a choice made by the user.
Basically, when entering the site the User chooses a product category and this selection determines the options in my menu. I'm totally lost as to how to populate my menu each time the user changes their category - I've only ever hardcoded in the values to a this menu type so I've no idea how to programmatically populate it.
From what I can gather, it seems that its best to populate the menu via XML - if this is so could someone post a sample of what this XML structure (or let me know ehere I can view this)
Say I am creating a Textbox in the codebehind of a page like this:
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
TextBox test = new TextBox();
test.SkinkId = "MySkin";
placeHolder.Controls.Add(test);
}
and in my skin file I have this:
<asp:TextBox
runat="server"
SkinId = "MySkin"
Width="400"
/>
Why is the skin not beeing applied to the control. If i declare the control in my aspx page it works ok, but if I try to do it programatically it does not work...
I load a webpage into my windows form and load it in WebBrowser control. Then, I need to click on a ahref from the WebBrowser programatically.. i wonder how i do it.. for example:
< a href = "http://www.google.com"> Google me < /a >
< a href = "http://www.facebook.com" id="fbLink"> facebook me < /a >
the above are 2 different conditons. the first one without id, the second one is with id..
I'm creating a custom templated composite control. If there is no 'ItemTemplate' specified in the mark-up, how do I create a default template programmatically?
View 1 RepliesI have a div runing on server in which i programmatically add images. On post back, id like to get some attributtes from those images, but they are nowhere to be found. What am i doing wrong?
[Code]....
[Code]....
I'm trying to programmatically add a user control to an aspx page.
the problem is that any postback that happens on the page(even if i added the user control to an updatepanel) clears the user control from the page.
this happens also if the postback is generated from the user control itself.
