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Questions tagged [controlcollection]

28 questions
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Linq To Select All controls where DI contains some text from ControlCollection

Linq has always befuddled me. I am trying to extract all controls from an ASP.Net form page where the ID of the control contains a specific string. The control collection is hierarchical and I want to return any matching controls from all levels. Am…
tjams
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C# Unable to loop through control collection and set properties on a user control in Windows Forms

Hi I have a Forms application that uses a custom control based on a Track bar called colorSlider. This control was obtained from code project and added to the tools in VS2017. All aspects of the control work fine. I can change any properties as I…
Tom
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Why are all the pictureBoxes in flowLayoutPanel controls collection displaying the same image?

I have a flowLayoutPanel that has pictureBoxes in it. I add multiple PictureBoxes at run time like this: while (flowLayoutPanel1.Controls.Count < 10) { flowLayoutPanel1.Controls.Add(new PictureBox()); } I have a…
Eric Snyder
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Manage a ControlCollection - display a new element at the bottom

I need to add a simple at the bottom of an existing view. It is composed of nested panels in a code which I know is not proper. But what I want given my available time is (simple as it sounds) to add my link below what is existing. In a few words,…
Gaël
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Delphi, Show button in a different TGridPanelLayout cell

Hi I am working with XE6 and I am using a TGridPanelLayout with 4 col and 4 rows. On the first cell I am displaying a Button. What I would like to do is, that when I click on this Button, get that Button to appear in a different cell. But I cannot…
petter
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Create and loop through collection subset of controls

Im making a small vb.net windows form application in which I have 4 ComboBoxes. I would like to add the ComboBoxes to a collection and be able to loop through that collection to refer to each one. There are other ComboBoxes on the form so I cannot…
Toby
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What would cause a ControlCollection to be reordered after Show()?

I'm at a loss to explain why the items in a ControlCollection would be reordered after a Show() method - maybe some here might know. I'm working on an older application written in VB.NET using .NET 2.0/VS2008 (yuk, I know ... but it's work) There…
HiDefLoLife
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Cell Edits to SpreadsheetGear WorkbookView aren't persisting

What's going wrong: When I edit a cell in a SpreadsheetGear WorkbookView, and initiate the CellEndEdit event by either hitting Enter, Tab, or any of the arrow keys, the value I just typed is wiped out. Context: It seems that when editing a cell in…
Jake Smith
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How do I join two control collections for use with foreach statement

As per the question I have two panels on my form one called leftPanel and one called rightPanel. These control a two column layout on my form. I also have collapsing/expanding groupboxes inside these panels and I wish to iterate over each one to…
Ryan Buddicom
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cannot convert from 'System.Web.UI.ControlCollection' to 'System.Collections.Generic.IEnumerable'

I would like to clear and dispose of all the components inside of an asp:panel. I am receiving the error: cannot convert from 'System.Web.UI.ControlCollection' to 'System.Collections.Generic.IEnumerable' Heres my code: List ctrls = new…
CodeMan5000
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Using CreateControlCollection() from within a WebMethod

my code calls a WebMethod. Within that WebMethod I have the need to create a new control collection. In VB I would normally write: Dim cc As System.Web.UI.ControlCollection = CreateControlCollection() But because I'm inside a WebMethod, I get…
wotney
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runat="server" div causes System.Web.HttpException when accessed from control collection

I have a div that is runat="server". The div is contained in a panel, and within the div are some controls. All of the controls outside of the div (but within the panel) are cleared when I run my "ClearControlsInPanel()" method, which looks like…
CptSupermrkt
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Is duplicate string index in ControlCollection possible? And how does it work?

I'm starting a small project in WinForms C# and have something like this: UserControl uc1 = new UserControl(); UserControl uc2 = new…
HiImEins
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