Web Forms :: Adding "UserControl" In PlaceHolder Dynamically (at Run Time) ?
Mar 26, 2010
I have a user control which I am adding to the page dynamically. UserControl is being added "n" times in PlaceHolder.
"n" depend on the number of records pulled from the database.
[Code]....
All the UserControls are added in a single column. (Issue, if n = 50, it looks very poor since half of the page is empty)
I want to add in multiple columns (eg if n=30; 10 in each column).
I am not using GridView or MultiView because user actually does need to modify any data.
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Jul 28, 2010
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[Code]....
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Jan 17, 2011
I have basically something like this:
<asp:datagrid id="DGrid" runat="server" AutoGenerateColumns="false">
<asp:TemplateColumn HeaderText="Stuff">
<ItemTemplate>
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</ItemTemplate>
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</asp:datagrid>
I need to add a Button to the PlaceHolder depending on the values of the data I am binding. At the moment I am adding the Button after the data is bound in Page_Load. The problem is that the data binding methods are not called in postbacks, so the Button disappears when I click on it.
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May 13, 2010
I am trying to add an instance of UserControl each time on button_click event, it works for the first time only. I am adding IDs to user control by appending integers from ViewState. Why does it not add work for subssequent clicks. Here is the simplified version with the same behavoir.
protected void Button1_Click(object sender, EventArgs e)
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Feb 6, 2010
Here is what I am trying to do. I have a page with two link buttons and an updatepanel (the two linkbuttons trigger the updatepanel). I have two usercontrols which have labels with same ID's. When I click the first link button, I add the first usercontrol to the updatepanel and set the label value to datetime.now
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Jan 13, 2010
I've been searching for hours trying to figure this out. I understand that somehow I need to recreate the control in page_load. I think seeing the code will let us better understand what I'm trying to do.
[Code]....
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Oct 23, 2010
How can I load a usercontrol into a placeholder on the parent page when a button on the currently loaded usercontrol, in thesame placeholder is clicked: I have a page called default.aspx that has a placeholder called placeholder1 on it into which I want to dynamically load a usercontrol I have 2 usercontrols, user1.ascx and user2.ascx user control user1.ascx has a linkbutton, when the linkbutton is clicked, I want the event to load the usercontrol user2.ascx into thesme placeholder, that is placeholder1
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Jun 5, 2010
Can a placeholder control be created dynamically such that you can add controls to it later on?
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Mar 17, 2011
I've a ASP.Net page (Default.aspx) which will load UserControl (ucontrol.ascx) dynamically into an UpdatePanel. By using UpdatePanel, we believe we're able to prevent the entire page to be posted-back.
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[code]....
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Dec 28, 2010
txtbox.TextMode = TextBoxMode.MultiLine;
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Feb 17, 2010
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Jan 15, 2010
I am a generic markup which I load at runtime froma file as follows:
<div id="pagewidth" >
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<div id="twocols" class="clearfix">
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Footer
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Nov 14, 2010
i have code to get values from textboxes that were added in placeholder on fly at run time
Code:
[code]....
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Mar 30, 2011
I'm creating an ASP.NET control dynamically based on a value selected in a dropdown; for instance the field can be a textbox or a checkbox (for now), and then it gets added to a placeholder control. However, I'm unsure how to retrieve the value - using the placeholder's FindControl method returns null although I'm specifying the ID when I create the control.
Here's my code:
[code]....
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Oct 14, 2010
I know the content palcehlder does not have a size ,I have a masterpage and content page, the master page has a table with a header, content area, and footer, header and footer are fixed size, content area is 100%. As the user sizes the browser the content area grows and shrinks and the footer stays at the
bottom of the browser window - perfect!
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So is there a way to get a SL object hosted on a master page to size itself based on the size of the browser window?Or more generally, a way to size the contents (like a div or panel) of a contentplaceholder based on the browser? on a standard aspx page (not a master page) I CAN get the SL object to size itself based on the broswer, the problem seems to come from the fact that I'm hosting the SL object in a content placeholder.
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Nov 15, 2010
I would like to load UserControl dynamically from DLL in the bin directory.
The dll contains several usercontrols which dynamically create webcontrols within them.
I do not have Virtual Path of the UserControls to use in LoadControl(String virtualpath) and LoadControl(Type, object[]) does not work(why the heck is it there in the first place anyways).
provide me some sample code which takes either the path of dll or assembly name "ServerControls" to load usercontrol "UserControl1" dynamically into placeholder "PlaceHolder1"
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Aug 13, 2010
As you said that for storing use data table and make property in the .ascx.cs file but I have problem that I m not able to get that property in the .aspx page. How to add multiple instances of web usercontrol on page on button click event?
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Mar 16, 2011
I have what is probably a basic question but I do not understand if/why there is a difference. I have a simple asp.net page with a staticly created DropDownList and Panel control. The user can select one of three options if the drop down (Employee, Company, Address) which should load the respective custom UserControl into the panel below. By default, I have the Employee control selected in the drop down and it should be displayed on the intial Page Load (!Page.IsPostBack).
If I do the following it performs the desired behavior on the intial load:
[Code]....
If I try the following, the User Control does not appear on the initial page load:
[Code]....
I noticed if I do it with a textbox instead of a UserControl, it works however:
[Code]....
I assume there is some sort of behavioral difference in the way the loading is done between a UserControl and WebControl.
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Mar 29, 2010
I am trying to add UserControl dynamically to the page. UserControl is added only once (when the page loads) but on postback it doesn't add again (Only one control is alwasys there).I want to add user control Whenever user clicks "btnAddUCWingControl" so when the page loads for first time, there will be only one control, on postback there must be TWO controls and so on
Here is my .aspx (this is content page)
[Code]....
My .aspx.cs file is
[Code]....
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Jan 19, 2010
Im trying to add a new "Question UserControl" dynamically to my page each time the user presses "Add question". This works fine and the last control gets deleted when the "Delete question" is pressed. My problem is that in each of the "Question UserControls" i have a placeholder where i would like to add a new Textbox when the user presses "Add answer" and then delete it once the "Delete answer is pressed". The way it works now when i press add answer, an Answer Textbox gets added to the placeholders in all the added Usercontrols. But i only want to add it to the one UserControl where the user pressed "Add answer".
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May 3, 2010
i want load a usercontrol dynamically and pass a string to it ho do i do it..
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Jan 19, 2011
I have UserControl that has asp control(<asp:Button runat="server" ID="btn" />) and I want to render it.
I tried 1
[Code]....
It doesn't works because it says that each control that has runat="server" must be in Form.I also tried 2:Because loader.Form is null, I create HtmlForm and added the ctrl to it and then added HtmlForm to loader's Control, BUT it says that it has 2 HtmlForm. So, instead I "injected" HtmlForm to loader like this
[Code]....
Now no error is occurred, BUT StringWriter is empty. don't tell me to add Page to solution and override OnRender. I want to do it as I mentioned above.
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Oct 9, 2010
I was wondering if it is possible to upload the .ascx and .ascx.vb of a custom usercontrol into my project directory at runtime via an upload control and then after that use through a database query point my page to load that newly uploaded control via (LoadControl(<newlyUploadedControl>)?
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Nov 16, 2010
When it comes to the usercontrol specially when they are loaded dynamically on the basis of certain conditions then it becomes a very confusing work. I have read in many forums that the dynamic controls have to be loaded in OnpreInit or OnInit. Some of those links are[URL] But this is useful only when if the we know that we have to load UserControl1, UserControl2 without considering any conditions. But what if I have a Tab control and for each Tab Click I have to load the UserControl dynamically. In that situation how can we add the control in either OnPreInit or OnInit. If I am not mistaken then in such case, then we can add usercontrol in certain events. If we are using a TabControl then we load in Tab_Click , if we are using Menu Control then we use Menu_Click and depending
upon the particular tab or Menu we load associated usercontrols. Hence in these conditions, how can we go with the logic mentioned by above links. I have this confusion for very long time . I am posting little portion of my project here. I am using RadTabControl but it doesnt matter if it is Microsoft TabControl. In the aspx, I have a code to define RadTabControl.
<telerik:RadTabStrip
ID="tabMemberDetails"
runat="server"
Skin="WebBlue"
MultiPageID="tabDetails" SelectedIndex="0"
Align="Justify"
ClickSelectedTab="true"
EnableViewState="false"
ReorderTabsOnSelect="true"
Width="1139px"
OnTabClick="tabMemberDetails_Click" ScrollChildren="true">
</telerik:RadTabStrip>
In the code behind, I am loading usercontrol on the basis of the particular TabClick. tabMeberDetails_Click fires whenever I click on the tabs.ViewState["ControlName"] stores UserControlName on the basis of certain condition and finally i load the usercontrol.
proteced void tabMemberDetails_Click(object sender,
RadTabStripEventArgs e)
{
Conditions......
{
ViewState["ControlName"]=........
}
viewDef=ViewState["ControlName"]
UserControl control = (UserControl)LoadControl("~/Controls/"
+ viewDef + ".ascx");
after this I add control to the RadTabStrip.................. and call bind method.........
}
As you can see from above, I am loading my usercontrol in tabMemberDetails_Click event. I see no other choice to do it in OnPreInit. Can anyone answer if this is the right way to do or there is another way that complies with the logic in the links given above.
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Aug 7, 2010
I have this user control :
[Code]....
and i load it dynamicly in Default.aspx like this :
[Code]....
How can I pass the title value ?
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