Web Forms :: Delete Controls By ID In Placeholder?

Jun 14, 2010

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.

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Forms Data Controls :: Create A Placeholder For Drop Down Lists?

Aug 25, 2010

I'm using VWD with a database back end. I have a list of teams which are marked off by league, level, division, teamid and then using gridview for the list of players per teams.I've got the drop downs working correctly but running into a little snag and that is on the auto postback.When I only have one option come up in a list, i obviously don't change that list and thus it doesn't change the next drop down because there is no post back. is there a way to use a "header" value?

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MVC :: How To Put A Placeholder Before The "MainContent" Placeholder In The Generated View

Jun 3, 2010

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?

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Forms Data Controls :: DetailsView Delete Method Passing Null Values To Objectdatasource Underlying Object Delete Method

Apr 12, 2010

I am using VS 2008 SP1. My also have included CSS Friendly adapter [URL] in my project ( I mentioned this because my GridView Empty data template is not showing when using GridView's CCS Friendly adapter). I have a GridView and a DetailsView. When a record in GridView is selected its details information is shown in the Details View. Type of Data source I am using is ObjectDataSource. My Insert and Update methods works perfectly. It is only the Delete method that is passing null values to the underlying object delete method. My source codes for both the UI, BLL, DAL is shown below

[Code]....

My Business Object code is below :

[Code]....

My Data Access Layer Code is:

[Code]....

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Forms Data Controls :: Databinding Dropdownlist Added To Form Via Placeholder?

Mar 31, 2011

I have a formview that has several dropdownlists in the EditItemTemplate. Some of the dropdownlists are added using placeholders. I can add and populate their listitems without any problem. But when I update the record, none of the controls can be found--even though when I look at the page source they are there. I first strated out using asp:ControlParameter in my sqldatasource updateparameters, but even referencing the control as myform$mycontrol did nothing. So then I moved to code behind on the sqldatasource.updating event (code is attached). The only controls I cannot seem to bind to the update are those added via the placeholder.

[Code]....

The item at the dim statement is not an item added using a placeholder and does not get a null reference exception (I used that to prove during debbugging that I wasn't losing my mind)--however, all the items being used to get the parameter values are getting null reference exceptions and are added via placeholders. Here is the code I'm using to set up the dropdownlists:

[Code]....

how to get the value of these controls so they can be used in my update?

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Forms Data Controls :: Find Control Added To PlaceHolder During OnItemDataBound Event

Jul 15, 2010

I add one or more textbox controls to a repeater itemtemplate during OnItemDataBound.

The textbox controls are instantiated and then added to a placeholder.

My problem is getting the user entered values from those dynamically added textboxes. They do not seem to exist in the repeater items collection.

[Code]....

[Code]....

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Data Controls :: Delete With Confirmation Using Details View Delete Command Button

Nov 7, 2011

I am interested in building an intranet document management system to be used from Internet Explorer using ASP.net, VB.net, and MS SQL Server but have no experience in doing a project like this. Supported file types would be txt, pdf (from scanner or imported from file system), or jpg. What concepts I should look at researching/learning about to build the system in a way that files will be stored as small as possible, retrieved and displayed quickly, and secured. The users would be spread out over a regional area covering 4 states.

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Data Controls :: Delete With Confirmation Using DetailsView Delete Command Button

Jan 7, 2014

I want to make an conformation dialog on auto generated delete button in detail view that when user press delete dialog or conformation box appear that u sure u want to delete how can i do this? 

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Forms Data Controls :: How To Hide Empty Columns In A Repeater - Write The Logic For Hiding And Showing The Placeholder

Oct 20, 2010

I have a repeater control having columns in it.When I bind the control to a data source then some of the columns become empty when there is no data associated with it.I want to hide the column if there is no data associated with it.I was trying to implement a solution given in this thread:

[URL]

However,I am not sure how to write the logic for hiding and showing the placeholder.I have written some code for the same but that clearly doesn't work.The following is the .aspx as well as the code behind which I am using:

[Code]....

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Forms Data Controls :: Dynamic Delete LinkButton In ListView Error "Delete Can Only Be Called On A Valid Data Item"

Feb 22, 2010

I need you assistance, Dynamic Delete LinkButton with CommandName=Delete gives me an error: Delete can only be called on a valid data item. nfact I am designing a Complex Grid using .Net 3.5 ListView Control with Scrollbar and Fixed Toolbar: This grid consist of 3 Tables:

1- footer
2- Toolbar Control
3- Scrolling Data Grid with Header

ListView give us only one ItemPlaceHolder to Bind Data as per LayoutTemplate, so I cannot able to manupulate my Toolbar Controls with ItemTemplate :(, therefore I decide to use ItemDataBound to add ImageButtons Dynamically using Init Page Event and I am able to get the result as you saw above:

ImageButton with funnel icon is with CommandName="Filter"
ImageButton with magnifier icon is with CommandName="View"
ImageButton with stop icon is with CommandName="Delete"

Now I can able to handle Filter and View with OnItemCommand Event but when I click Delete button I am getting an error as shown below: The grid used CSS I am sending you the HTML and code behind to resolved this problem: HTML CODE:

[Code]....

CODE BEHIND VB.NET

[Code]....

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C# - Add Custom Control To A Placeholder All Controls

Jul 31, 2010

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.

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Data Controls :: Radio Button In Placeholder

Jul 24, 2012

In place holder i have radio button, and  label box --->getting values form dataset,

if i click the radio button in placeholder i want to get the value of label box

Radio button index changing--->i got the radio button value but how to get the lable value while radio button index changed

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