Alternatives To SelectedIndexChanged That Don't Fire On Form Load?

Jan 16, 2011

I'm developing in VB.NET with Visual Studio 2005.I have a ComboBox (myCombo) on a form that gets populated within the Load method.I also have handled myCombo.SelectedIndexChanged to change a label on the form.Edit: The way I added the event handler was by double-clicking on the combo box on the designer. Skeleton code then came up in the code view.

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.net - Alternatives To SelectedIndexChanged That Don't Fire On Form Load?

Dec 24, 2009

I'm developing in VB.NET with Visual Studio 2005.I have a ComboBox (myCombo) on a form that gets populated within the Load method.I also have handled myCombo.SelectedIndexChanged to change a label on the form.

Edit: The way I added the event handler was by double-clicking on the combo box on the designer. Skeleton code then came up in the code view.It looks like what's happening is when the form loads, SelectedIndexChanged gets fired each time an item is added to myCombo.This isn't what I want, but I'm thinking there's another event handler that only gets called when the user changes the selection.

Here's some code for what I have:

Private Sub myDlg_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' this is all I do with myCombo in this sub
list = GetListOfItemsToAdd()

[code].....

Update: The solution I used was to remove the Handles clause after the event generator, and add this before the "End Sub" above:

AddHandler myCombo.SelectedIndexChanged, AddressOf myCombo_SelectedIndexChanged

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Asp.net - SelectedIndexChanged Event Doesn't Fire?

Nov 2, 2010

I have added the AutoPostBack = "true" attribute to the drop down list. It doesn't work.

<asp:DropDownList CssClass="dropDownList" ID="ddlBusinessUnit"
AutoPostBack="true" runat="server" Width="250px"
OnSelectedIndexChanged="ddlBusinessUnit_SelectedIndexChanged">

[Code].....

How can I ensure that the event method is called?

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Why Doesn't GridView SelectedIndexChanged Event Fire

Dec 2, 2011

I have a GridView which you can click on a row and it should call the SelectedIndexChanged method (which updates another part of the page based on which row was selected). I have done something similar to this before and it worked, but I can't seem to get the SelectedIndexChanged part to be called for some reason.The page is held in a master page which has a form runat="server" tag, and an <asp:ScriptManager> tagI am using e.Row. Attributes.Add("onclick", ClientScript.GetPostBackClientHyperlink(Me.gridMessages, "Select$" & e.Row.RowIndex)) to allow the SelectedIndexChanged to fire by clicking anywhere on the row.To check that the code does work apart from that, I added a CommandField with a SelectButton and that successfully fires, but i would prefer to find a solution without having to use that.[code]

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Combo Box On A Tab Control SelectedIndexChanged Event Doesn't Fire Until Tab Is Selected?

Jan 24, 2012

I am using VS2008, vb.net, Windows forms project.I have a combo box control on a tab control.The selected value of the combo box is bound to a binding source.The data source of the binding source is a typed dataset.I set the datasource of the binding source when a record is chosen in a data grid control.Since the combo box is bound to the binding source, this should set the selected value of the combo box, and fire the initial SelectedIndexChanged event.Therefore, I remove the SelectedIndexChanged event handler for the combo box before I set the datasource of the binding source, and add the handler again after the datasource is set.

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Fire SelectedIndexChanged Event Programatically In Combo Box Of WebBrowser Control

Jun 20, 2009

I am using visual studio 2005. i am using webBrowser control to automate third party website.My problem is SelectedIndexChanged event is not getting fired. I used the code.[code]This code is changing the value in combo box but it is not firing the selectedindexchanged event. If i manualy select the item then after selecting a item it shows different message. How should i do it programatically.

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Get Combobox SelectedIndexChanged Be Executed On Load?

Jul 5, 2006

What is the method to not allow combobox SelectedIndexChanged to be executed on load. and only make it to be executed when a "USER" changes the selection value.

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Asp.net - Use GridView SelectedIndexChanged Instead Of RadioButtonList SelectedIndexChanged?

Jun 8, 2012

I have a few reasons that I need this to happen, but suffice it to say that when I use the event handler for the RadioButtonList the sender object returns as just the RadioButtonList, and I need more information from the GridView because that's how I can uniquely identify which record my RadioButtonList is tied to.I added an "OnSelectedIndexChanged" property to my GridView but it doesn't fire/handle when I want it to. I'm assuming this has something to do with the way the GridView is designed to work. I also thought about using a hidden field, but I can't add it to the RadioButtonList so it won't help unless it's global. The problem with it being global is that I can't set the value uniquely to the record that has it's RadioButtonList being altered.

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SelectedIndexChanged To Open A New Form?

Mar 11, 2011

I have a datagrid view on a page that I'm making and I want to be able to open another form when a user "selects" an entry. I've tried looking through the documentation on how to do that but can't seem to find any. Does anyone know of an easy way to accomplish this task?

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Get Form Click Or Form Control Mouse Events To Fire DURING Form LOADing

Aug 26, 2011

Im Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.

[Code]...

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Fire A Method On A Different Form When Closing A Form?

Jun 22, 2010

I have a unique challenge that I just cannot seem to get by...I have a form with a series of listboxes that allows the user to rename items in the listbox (I probably should be using a listview control instead). When the user right-clicks and selects rename from the context menu I show a simple form with two labels & text boxes showing the selected list box item in one textbox...the other is blank waiting for the user to enter a new name. What I'd like to do is when the user closes the rename form, the information is passed back to the calling form and a listbox refresh method is fired to show the changed name. Couple question:

First, is there an easier method to implement the renaming concept in a listbox (probably should be using a list view) i.e., have I overcomplicated things?

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VS 2005 - Form Load - Retains The Previous Values During The Form Load

Jul 27, 2009

Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand


[CODE]...............

The insertion part of the form works great. But my problem is in the form load part......If i leave a field blank(Null),then perform Save operation,close the form after successful insertion and then reopen the form,then it retains the previous values during the form load......This is only in case where i leave a field blank in the previous data entry in the database.......But if i enter values in all fields then form load is working great.

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Can't Seem To Get Form.GotFocus Event To Fire

Oct 21, 2009

I can't seem to get the Form.GotFocus event to fire.I have two forms - a main window and a debug window.The debug window will always be shown with the main window. But, I don't want the debug window to appear in the task bar - it's unnecessary.While my program is running, when I select another program, my main window and the debug window are placed behind the program that I selected. From the task bar, I can bring my program back to the front by clicking on it in the task bar. The problem is, that now my debug window is behind the other program.I have code that will "DebugWindow.BringToFront", and it works. But I need some way to run do this when the main form gets the focus.I do not wish to make any of my forms Modal. At least not permanently. If the solution is to change the modal property of the form temporarily, then that wouldn't be a problem.

I tried Me.Enter, Me.Activated, Me.Click and a few other events. Me.Click only works when I click within the Form window, not the form's title bar. Me.Activated caused problems - The code ran, but it would always end with the focus on the Debug window. When I tried to click on the main form, the Activated event would fire again, sending the focus back to the debug window.[code]

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Event Won't Fire On Form Exit

Jan 19, 2009

I have a MDIcontainer form witch handles MDIchildren. The problem I'm having is when i open a new Mdi child and close the Main form , The app is supposed to ask if i want to save the current MdiChild. Heres my code

[Code]...

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Fire A Method If Key Is Pressed Outside Of Form Focus?

Sep 26, 2011

I am making some sort of panic program where if any key is pressed while the person is using the process in the combobox, it will kill the event....

I.e lets say i am playing a game (or googling something) and I press control-alt

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Prevent An Event To Fire While Loading Form?

Mar 3, 2012

I have a form contains NumericUpDown1, TextBox1, TextBox2, at design time i set NumericUpDown1.Value to 4 and TextBox2.Text to 100, and i have this sub[code]...

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VS 2005 : Load A Form And Allow It To Run It's Code In The Form Load But Keep It Not Visible?

Dec 14, 2009

How can I load a form and allow it to run it's code in the form load but keep it not visible. I want it to do what it needs to but but not display.

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Tabbed Control Form - Procedure Call Does Not Fire

Mar 6, 2012

My main form is a tabbed control with 2 tabs. The first tab is has two listview controls which display information about the current machine. The second tab contains a treeview control and two listview controls. This tab recreates the device manager in windows. I created a Machine class to gather the information about the machine that I want to display to the user. When I call the Display() Method from my form's load event everything appears to be fine the first tab's information is displayed in the listview controls.

Here's the kicker, when I click to the device manager tab there's nothing there. The LoadTree() procedure never fires. This code works, I've seen my device tree display a thousand times in the past. When I comment out the call to Machine.Display() my device tree reappears no problem. The code compiles fine no errors. I know the problem has to be in my Machine class but I have no idea what could cause this kind of response. I've never seen a program compile clean and then refuse to fire a procedure call but not produce some kind of runtime error.

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VS 2010 Fire Event On Any Textbox Change On Form?

May 10, 2012

I have a form with over 100 textboxes that are set in multiple groupboxes and that number grows as I continue working. I am trying to get an event to fire if there is a keydown on any one of the textboxes. other than individually adding all 100 textboxes to the handler, is there a way for me to create a single event that handles all textbox.keydown events on the form?

I want to run something like the code below every time a textbox on my form changes. The code rules out text boxes within groupboxes that I don't want to fire.

If TypeName(SplitContainer1.ActiveControl) = "TextBox" and InStr(ctrl.Parent.Name, "GroupP1Payoffs") = 0 _
and InStr(ctrl.Parent.Name, "GroupP2Payoffs") = 0 and InStr(ctrl.Parent.Name, "GroupP1LoanDetails") = 0 Then

[Code].....

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Alternatives To RichTextBox?

Sep 8, 2010

For sometime now whenever I am in need of formatted text I have been using RichTextBox control and save data to RTF format. However lately I started using RTF editor control that allows you to insert images into rtf. And although this works, the file sizes grow immensely.I was wondering if nowadays there are any better alternatives (preferably available for free) that people can use in windows applications for viewing and editing documents.

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Any Alternatives To Codedom?

Jan 5, 2011

Are there any alternatives to Codedom? THe reason I am asking is because Codedom is not letting me use pointers(unsafe code) which is a must in my project. I have hear of the System.emit namespace though.

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FileLen And LOF Alternatives?

Nov 19, 2010

give me some alternatives to FileLen & LOF?

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.net Winform Grid Alternatives?

Dec 7, 2010

I am using vb.net / Winform 2010.I am looking for a free (or very cheap) alternative to the DataGridView, one that looks more like what I see on ads for XTraGrid. Something that will multiple lines per records, and for lines to be rolled up, and expanded by clicking, etc.

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C# - Cross Platform Alternatives To WPF?

Mar 31, 2011

I'm thinking of porting my application from VB.net to the C# based MONO project, so it can run on both Windows and Mac. However, I am in need of a Mac-friendly alternative to WPF. It has to have very similar functionality. QML (by QT) is not a viable option, as it costs far too much money for us.

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PaintEventArgs.Graphics Alternatives?

Jan 1, 2010

is PaintEventArgs.Graphics the only way to get the Graphics of a Form?

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VS 2010 Alternatives For The Old Functions?

Sep 21, 2010

When I try to code in VB2010, I usually unmark the reference to Microsoft.VisualBasic. Because I do not want to use the legacy functions of VB6. I want to complete walk in .Net path. And I have found some alternatives for the old VB6 functions. But the rest not. Where can I find the list of those methods or classes (alternatives for the VB6 functions) ?(For eg: when I tried to find the difference of 2 dates, I couldn't find any other alternatives. So, I came back and used the Microsoft.VisualBasic reference for using DateDiff())?

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VS 2008 Drag And Drop And Alternatives?

May 20, 2011

I'm working on a small utility program and found that I have a need to copy the contents of listboxes, textboxes and other control from one to another.

I just started playing around with Drag and Drop but it seems lacking a bit...for instance, if I wanted to drag the contents of a listview to a text box, it doesn't look like I can do that easily if at all.

Can you use a drag and drop to copy the contents of different control types easily?I thought about using the drag and drop method for notification of the intent to copy the contents and then I would code the copying.

The idea (although I know it will be slow but that is okay for this utility) to copy the source to a textbox and then from the textbox to the target. The content won't be that large and speed is not a concern at this point.

Here is my issue if I have to do it this way.

1 - How can I use the control names to do this?

2 - How do I get the target control name?

I figured I would create a function that I would pass the source control name and the target control name and based on type, perform the appropriate method of copying the data.

I haven't figured out a way to get the target control name. I can use activecontrol.name for the source.

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[2005] TabControl: Beautifying It Or Alternatives?

Feb 18, 2009

I have the need to constantly use the TabControl but somehow its current look is boring, is there any tricks out there to make it more interesting? Or what are the alternative controls that I could use to replace it?

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Load Creategraphic Into Picturebox On Form Load

Aug 24, 2009

I would like to load a default created image at start. But seems to not be working on form load any ideas.[code]

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Alternatives For Accurately Representing Decimal Variables In C++

Mar 4, 2010

I am currently working on a program that takes Visual Basic data in the form of a text file, and then stores this data in C++. Some of the data from Visual Basic is of the type Decimal. C++ has no built in type equivalent to decimal. I don't want to use double because there is a possible loss of significant figures if the numbers are large enough.One option is write my own decimal class.

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