I have a form in VB with many (over 100 - fields, labels, the form itself etc...) items on. I wondered if there was a way of refering to all the items on the form without having to list them all individually in the Handles keyword, which is extremely long winded! I want to carry out the same action wherever the user clicks on the form. At present I have the following
[Code]...
Protected Sub Menu1_MenuItemClick(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.MenuEventArgs) Handles Menu1.MenuItemClick
End Sub
In VB.net, we have the Handles keyword, I'm wondering if C# has anything comparable. Or do you have to manually wire all the methods to each control's event (in ASP.NET especially)?
When I cut some controls in designer window and paste them in some other container, handles keywoards dissapears from code.
If I have btnOK on form and click event handled like this:
Private Sub btnOK_Click(...) Handles btnOK.Click
and then in designer I cut the button and paste it somewhere else, Handles part just disappears, living the method.
I understand why this happens, cutting like this is like deleting the control but silently removing parts of the code is not nice behavior from editor.
Is there any workaround, preference or plugin to add some warning before messing with my code? Or even better, to keep handlers and leave removing to me?
How would i go about making a form that handles a different forms settings?ei, the Button Forecolours ect.
View 5 RepliesI'm trying to add an item to my object's List(Of, and reference the List(Of using the same property, just like how a ListItemCollection works.
In the second line you are referencing the "Items" property of a ListBox instance called test. That property points to a ListItemCollection, and in the ListItemCollection is the "Add" function. I call the Add function twice.
Dim test As New ListBox
test.Items.Add("item1")
test.Items.Add("item2")
For Each item As ListItem In test.Items
Response.Write(item.Text)
Next
Then in the loop I call "test.Items". This is what i'm trying to figure how to replicate that for my own class. I'm obviously missing something big here, but how can the test.Items property return the ListItemCollection that has the Add function, and returns a list of items that are in the collection like in the loop?
How do i structure my class(es) to do these functions:
myInstance.Items.Add(obj)
For Each obj in myInstance.Items
Next
I have a collection class, say ITEMS, that inherits a Dictionary (of String, SINGLEITEM). From the SINGLEITEM class, I would like to reference a property in the parent ITEMS class, what is the best way to do this? For example, say the ITEMS class has an IsDirty property and I would like to set that if ANY of the contained SINGLEITEM objects is modified, what's the best way to go about doing this?
I know I could add a reference to the collection class in each SINGLEITEM class (since I override the ADD method, I could make this assignment), but this seems like overkill.
We have a vb.net 2010 application with a base form and an inherited form When we change the position of a control coded on the inherited form we lose handles on the events in the inherited form for that control. We also lose the handles on the Load event in the inherited form.
View 9 RepliesI am using Visual Basic 2010 Express. I have 2 forms. A main form which does all the grunt work and then a small supporting form to get some additional user inputs.
Some program background...I am developing a program to characterize solid rocket motors based on test stand data for a hobby project. I load the time, thrust data into lists via a streamreader from a text box.
However, since the data is raw I would like for the user to select the "start" and "end" of the burn. I am currently trying to do it right after I load the data. As I read the data in, I just put it in the listbox of the supporting form as well. My main issue is, I need two values from the user. A start and end time. the index would probably be easiest, as I will rewrite the data list based on the time increment and delete everything before the first listbox selection and everything after the second selection. I can't get the values from the main form. I have exhaustively searched the internet trying to find something that I can apply. If someone could help with a framework on how to do this.
I understand how to get text from this text box on a different form, but this deals in variables and maybe setting up a class? I am having trouble communicating between the two forms.
Linking Comb Box Items to a Button to load a new formCombo box 3 has 2 items.....Item 1, Item 2i want it so if you click on the button when item 1 is selected it will load form3 and if item 2 is selected the same button will load form 4
View 1 RepliesI have this cash register program with separate forms for the items and the display form. The code works untill you press the button 2x. It says 5.5 + 5.5 = 11.5??? Can you fix this code?
CashReg.ListBox1.Items.Add("Item 1")
Dim cash As String
cash = (5.5)[code]....
finally my programme works. It will test the other programme, which is a Bid Tabulation programme allowing up to 10 Supplier Quotes each one having up to 500 line items; handling mixed currencies; many additional lines of specific information; etc.; using any combination of Suppliers and Line Items.However, I thought that I would let you know about some of the things I had to do to make it run.Obviously, the programme can bring up the Bid Tabulation programme very quickly, and then moves on to obtain the handle of the first form. But I had to insert a timing delay in order for the programme to report that it had found the handle; I also had to add the same delay all over the programme in order to see a valid handle number instead of "0".In addition to this I had to cycle through the ChildHandles, as you had indicated in order to get to the handle I needed. This raised another problem. I wanted to enter information in the same sequence as the tab order, but I found that the ChildHandle order was all over the place; generally back to front. In other words the tab order which went from top to bottom, and left to right, whereas the ChildHandle order was sometimes all over the place.
Is there a simple method of rearranging the ChildHandle order, as there is for arranging the tab order? I had to reformat several of my forms in order that entries would make sense. Imagine the table below is a form with 23 TextBoxes. The order that I need them to be filled is from top to bottom, and left to right, but the actual order of the TextBoxes is as below: [code] This message does not really require a resolution to a problem, unless there is a way of re-ordering the handles without having to completely reformat the form.
pvt sub timer1_tick(.....................................................)
dim n as login form
n.show()
timer1.enable=false
end sub
Is there need to set keyword before login form? i m using this code but login form is not showing at runtime.
I have 2 Forms in a VS 2010 Project. Form1 is the Startup Form and can, with intellisense see Form2, but NOT the Controls on Form2.
Form2 can with intellisnse, see Form1 AND the Controls on Form1.
Why can't Form1 see the Controls on Form2? I've not seen this issue before in VS or VB6.
The error message is :-
Reference to a non-shared member requires an object reference.
The Controls on Form2 have the Property of Friend.
I have 2 forms in my project. Form1 does all the grunt work and Form2 is a setup form.
In a module I have placed this
Public myForm2 As New Form2
In Form1 I have this in a routine
For Y = 0 To myForm2.lstCallWatch.Items.Count - 1
The listbox has 12 items in it but the items count is ALWAYS 0
What am I doing wrong to read the number of items in the Listbox?
example:textbox1.text = "frmHelp"...is it possible to go to the form (.show) by simply using the form's name, also how?
View 2 RepliesI am new to using Visual Basic 2008. I have been programming in VBA for years. In VBA I used the following type of 'For ... Next' statement to go thru multiple controls in a form which are named the same except for a number at the end of the control name. [code]...
View 3 RepliesHow do you reference a variable in another Class?
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
TextBox1.Text = "Class1_Text" ' Would like to replace w/correct code
End Sub
End Class
Public Class Class1
Public Class1_Text As String = "Class1 Text"
End Class
I can reference the Form1 data in Class1 but not vice-verse.
Imports System.Collections.GenericI
mports System.Net
Imports System.IO
Public Class Form2
'Dim filename As String
Public ftpSettings As FtpClient
[Code]...
I don't know what's wrong, i can only move the 1st item but the second and so on doesn't make any changes. It remains in a listbox.
This is bugging me. I have a "main" form named frmMain with a DataGridView object named objDataGrid.When a user double clicks on a row or clicks another button, I hide the main form, open a new form and want to reference the values in the row selected by the user but I keep getting an error when I try to access some, but not all, of the datagridview's properties.
[Code]...
Usually I would just do Form.Control.Property but that doesn't work.It just seems overly complicated with public classes, etc.Is there a more simpler way to do this? I'm ready to throw in the towel and just use a global variable at this point.I have the form containing the control I want to reference, frmGenerate which has a textbox called txtCustomerNo.From this form through a button's click event I want to show another form, frmCustomers, and have that form reference the value in txtCustomerNo.
frmCustomers.ShowDialog()
We have an application that has a main form with a map on it. Right now the paradigm is to have forms that are displayed using menu items to display information to the user. Most of these forms are modal forms, but a couple are non-modal forms that interact with the map. For some of the forms, it really would make for a better user experience if we could dock them in the main form of the app and allow the user to see both the form and the map. For instance. We could have a list of map features in a docked window, and select one of the items on the list and have the map zoom to that feature. Or do the reverse: let the users select a map item and have a docked window that shows details of the feature. Sounds great, but I wonder about what sort of gotchas we may encounter. In particular, what if we have two windows docked at the same time? Could we get tangled up in our event code?
View 2 RepliesOkay I have this two Forms.. one for the parent and one for the mdichild. I have a toolstrip menu in the parent with a button(with a pic) named close document.
View 2 RepliesIs there a way to basically merge a Windows Forms Application with a Windows Service Application and allow the passing of parameters on start up to determine if it should start the standard GUI or launch as a system service
View 4 Repliesi created a validation procedure on a textbox_validating event. the procedure goes something like [Code] but somehow it doesn't stop the system from continuing. what happens is on my Save Button where i have. [Code] i'm assuming that when i click the save button, the Textbox1_Validating event is also fired since it also brings up the MessageBox. but then after pressing OK on the MessageBox, it continues to try and Update the DataTable where I get an error from the database saying that the Column does not allow null values.
also when i click Save Button, i noticed that the Textbox1_Validating Event is only fired when the cursor is on that item. basing from this, it seems that the not all Validating Events are fired when an Adapter.Update is executed. what's the best way to validate items? should it be on the Save Button and not on the Validating event of each items?
I have a listbox on my form, and a procedure that scans a certain directory for sub-directories, it then adds each subdirectory as a item in the listbox.
ex :
g:movies2010Clash of The Titans
g:movies2010Date Night
g:movies2010Red Dawn
[code].....
I remember in the old VB6 that there was something simple as listbox.add("my string", 1 This '1' would meant the position I want it to be added, which means 'the top'I'm sure it sounds newbie... but hey, what a heck... I'm only been programming .net for a few months.
View 3 RepliesI am totally new to VB.NET and Visual Studio. I am creating a new form, which includes a combobox. I have figured out how to add the items to the combobox using the properties box, but I would rather code them. I tried the below code, but no luck. Any ideas what I am doing wrong? Me.cboSTATUS.Items.Add("A")
View 5 Repliessimple problem that i just cant figure out. here is the code
[Code]...
this code works fine as long as i dont remove ALL items, the error i am getting is index is out of bounds of the array, i have tried -1, -2 0 +1 +2 and all are still giving this error, i cant just create code for remove all as i wont always need all removed so i kinda of have to get this code or something similar to remove only checked items. the code below is code i have tried
[Code]...
I want my ComboBox to display items from the AutoCompleteSource AllSystemSources.
Basically, I want the Items property to get its items from the AllSystemSources.
But I don't know how to do this.
I am using Visual Studio 2008 Express (Not the WPF forms though)
I am trying to get the items out of a listbox and put into a text box .. I am putting the listbox items into an array and I keep getting this error: InvalidArgument=Value of '1' is not valid for 'index'. Parameter name: index
bolded code where this occurs here is my
Private Sub btn_BuildText_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_BuildText.Click
Dim delimiter As String 'Holds the String character representing the chosen delimiter
Dim i As Integer 'Loop counter
[code]....