I have created an ITemplate property, I can set the layout in the aspx page, and I am doing ITemplate.InstantiateIn(myControl).
But I can't figure out how to insert controls at the placeholder. I'm guessing it would be something like MyTemplate.FindControl("itemPlaceholder").Controls.Add(myControl). I tried casting to the type of my ITemplate, but I get the error:
Unable to cast object of type 'System.Web.UI.CompiledTemplateBuilder' to type 'MyNamespace.MyLayoutTemplate'
Edit: I just found this: http://www.nikhilk.net/SingleInstanceTemplates.aspx Control developers can define templates to be single instance using metadata which causes the ID'd controls within the template contents to be promoted to the page level... The parser and code-generator together work behind the scenes to add member fields, and initialize them at the right time.. It seems to be only for user controls? I tried Page.FindControl() after doing this but it didn't find anything.
how to maintain state of placeholder. i have a placeholder in which i add many image controls dynamically but when my page get refresh all controls from placeholder gets removed from it. the enableViewstate of placeholder is set to true.
I have an <asp:ListView> but for some reason the LayoutTemplate section does not show when the list is empty, although the <EmptyDataTemplate> section shows. The LayoutTemplate contains the headers for the table, and I want to show an empty table when there are no items in the datasource, not just the content of EmptyDataTemplate.If there is no choice I will copy the LayoutTemplate into EmptyDataTemplate.
I am using list view to display the the data but i am getting an error like An item placeholder must be specified on ListView 'ListView1'. Specify an item placeholder by setting a control's ID property to "itemPlaceholder". The item placeholder control must also specify runat="server.Even i have specified the itemplaceholder id but no use still same error.
I am using ASP.NET MVC 2 in Visual Studio 2010. I have a ASP.NET MVC application with a master page that contains 3 content placeholders. When I create a new view from a controller by right-clicking the action method and selection "Add View", I end up with a ASPX page that does contain the 3 content placeholders but in the wrong order. This is by design because in the T4 template used to create views "TitleContent" will be used first followed by the "MainContent" and after that all the other content placeholders are put.
I have a subtitle content placeholder in my master page that I want to put before the "MainContent" placeholder. Is there a way to achieve this with modifying the Create.tt T4 template?
I've created a simple ASPX-page, added a ListView control to the page and created two implementations of the ITemplate; one for the LayoutTemplate and one for the ItemTemplate. The trick here is that I specify a collection of columns I want to display in the ListView and supplying the collection as a parameter to my LayoutTemplate class. Here's the whole code (the call to "Columns.Skip(1)" in "LoadDataSource" is merely to verify that I can render the ListView with a arbitrary number of columns):
public partial class ListViewITemplate : System.Web.UI.Page { private static IList<string> Columns { get {
i am usingVWD 2010 andwant to create a website supported under .net 3.5. The deafault mater page has the loging pgaes already set up (.net 4.0) which is very good and helping to start. But once i changed my project to run under .Net 3.5 , i could not have the account register webpage working and getting this error : Parser Error Message: Type 'System.Web.UI.WebControls.CreateUserWizard' does not have a public property named 'LayoutTemplate'.
I have a repeater and within that repeater, I have an item template. Now this template is formatted with a couple of tables, but for this question I have removed them to make things easier to read:
My application generates report which lists blocks of information within placeholders. When the text is very long it is wrapping around with no indentation.
I have a #placeholder in a page .I want to redirect to this page form a link that should take me to #placeholder section.in firefox this works fine,but in ie i am not getting #placeholder
A little pseudo code to provide some background:I have an ASPX with a placeholder and a buttonWhen the button is clicked it adds a web user control (uc1) to my placeholderhe uc has a buttonWhen clicked it adds a different user controls (uc2) to the placeholderStepping through the code, if I look at the placeholder.controls.count before and after the button-click in #4 the count increases by one, as you would expect.The problem is that the uc2 added in #4 doesn't appear on the screen. So, I wrapped my placeholder in an UpdatePanel. I've never used one before. So, I could refresh the placeholder after the uc2 was added.relevant ASPX code
In code behind I added controls (htmlheadercells) to the contentholder:
Dim tableHeaderCell As New TableHeaderCell() tableHeaderCell.Text = "Test" additionalHeaderColumns.Controls.Add(tableHeaderCell)
When I try to do the same in the databound event for each row I get an errormessage that tells that its not possible to put asp:PlaceHolder inside the row. it expects tablecells.
I have a web form and i'm creating tables including radiobuttons dynamically according to a number entered from a textbox,this tables created in placeholders.I'm using update panels so when i click the radiobuttons the radiobutton dissappear and a textbox is created at the same place,if one cell is created there's no problem but at multi creation there's a problem,when i click one radiobutton,all of them disappear and textboxes created,btw there's a checkedchanged event created dynamically also.I try many ways but i can't find the selected radiobutton,what do i have to do?
I've created a usercontrol in asp.net webforms (c#) called 'Article' which contains a general layout for an article and has a public property called datasource. the datasource will be populated by a subsonic (DAL) activerecord. In the controls pre-render event it will read the record and populates the labels. I think this is a flexible solution with easy maintenance. My problem however is that when I try to add the control to a placeholder all my controls like labels, literals and the like receive a null reference exception. I'm trying to spawn the controls as followed:
foreach (DAL.Article item in coll) { p7.Controls.General.Article.Article article = new p7.Controls.General.Article.Article(); article.datasource = item; phContent.Controls.Add(article); }
Is there something I've completely missed? It's driving me crazy heheh! Another question is do you guys know if this method will have a big impact on performance. I'm only adding 10 of those article controls per page.
I'm working with a website written in aspx.net over vb.
I have a placeHolder, and I create a table of names inside this PlaceHolder, each name has an HtmlInputCheckBox next to it.
Im doing this in the aspx.vb file, when the page is uploading.
Then, when the user wants to send mail, he presses a button and than I need to access the checkboxes, and I'm having problems with this, the Sub doesn't know the checkBox object.
I've problem with validating all text boxes in PlaceHolder. I made PlaceHolder and I've no idea how to check that all textboxes have integer numbers as a text.
public void Made_Matrix (PlaceHolder Matrix, int Size){ for(int row=0; row < size; row++){ for(int col=0; col < size; col++){ TextBox TB = New TextBox(); Matrix.Controls.Add(TB); TB.ID = TB + Convert.ToString(row) + Convert.ToString(col); TB.AutoPostBack = "true"; } Matrix.Controls.Add(new LiteralControl ("<br/>")); } } public void TB_Validate (PlaceHolder Matrix, int Size){ for (int row = 0; row < size; row++){ for (int col = 0; col < size; col++){ string Ident = TB + Convert.ToString(row) + Convert.ToString(col);
how can i find text hidden in TextBox with ID from Ident? And how to check if it's numeric? I suppose that in .NET there's no function like IsNumeric(), am I right?
TThis time I'm facing some unusual behavior with a web page that I'm developing. I have a table with several controls and gridviews and stuff. At some point of the table, i have to show some rows (they were hidden) when the users clicks a button. I was doing this with a PlaceHolder, but now i have to do it without the postback being displayed. I thought: "That should be easy, all i have to do is to put the PlaceHolder inside an UpdatePanel, and that's it" but no, no no nooo!! NOTHING IS THAT EASY!!! It actually works but it puts the hidden rows at the top of the page, not where they suppose to go!!My code is the following:
I have a repeater and within that repeater, I have an item template. Now this template is formatted with a couple of tables, but for this question I have removed them to make things easier to read:
I have an .aspx form that has a place holder that allows a user to add controls on button click. Upon button click of "Remove last added control" the user will see the last control be removed. I have searched this and can capture the control that they are wanting to delete but am having trouble actually removing the darn thing!!
Here is my code that I have that iterates through the controls and finds the specific ID that i want to delete but does not seem to delete it due to my syntax I believe (Coded in C# in .Net envirnomnet).
foreach (Control c in myPlaceHolder.Controls) { if (c.ID == "myTextBox" + Convert.ToString(Session["Control_Count"])) { this.Controls.Remove((c)); } }
The session["Control_Count"] is the highest or greatest value that is added to the page. (example of 2 control ID's: myTextBox1, myTextBox2.) I want to be able to Delete TextBox2 and leave TextBox1 and thought thi swas a way of doing so.
It looks to me that the ASP.Net PlaceHolder control doesn't emit any HTML, and therefore can't be used by clientside javascript or JQuery to add items to the PlaceHolder. Does anyone know of a way around this limitation, or of an ASP.Net control that can be used to dynamically add items by client side code?
I am adding controls dynamically to PlaceHolder which within ContentPlaceHolder
var t = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1"); var t1 = (PlaceHolder)mpContentPlaceHolder.FindControl("PlaceHolderName"); var t2 = (DropDownList)t1.FindControl("ControlID");
It looks like I am missing something because t2 is always null
