I open a form using .showdialog and load some info onto it. I have code that runs on the MyBase.Load event. Basically, I have a Try, Catch, End Try block and if the Catch executes in preparing my information, I want the form to stop loading i.e. give a message and not show at all.
View 20 RepliesI fear that there is something obviously wrong with my code, but I have come across a situation where the Form.Load event is not firing when I create and show my form. The form is not subclassed (as I've seen some problems with that in some searches), and I am not getting any errors thrown when I step through the code in the debugger.
I have a break point set on the IDE-created form load function (which does have the Handles MyBase.Load signature suffix) but the breakpoint is never reached and the form does display and work.The form is passed three arguments in the constructor but the IntializeComponent() function is called before anything else is done.
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I am trying to open a MDI child form in some presenter class. In the form load handler I perform a number of initializations. If any of them fails I want to cancel opening the form. The current code does not prevent the form from opening.
Private Sub OnFormLoad(ByVal sender As Object, ByVal e As System.EventArgs)
Try
Me.mGridBindsource = New BindingSource()
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I am getting this error on showing the form from another form. [code]
View 2 Replieshenever I attempt to open a form, an error has been popping up;
An error occurred creating the form. See Exception.InnerException for details. The error is: Index was outside the bounds of the array.
For simple code like;
formbooking.show()
Whenever I reference this form in anyway, that error pops up. I haven't done anything related to that form recently and I don't know what the problem is.
I get the following exception when showing a form: InvalidOperationException was unhandled
Mixed mode assembly is build against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.
I am checking emailId exists in DB, If ExistsI am looking to create a Ok/Cancel confirmation dialog.if user say "Ok" I am redirecting to some other form.[code]...
View 3 RepliesI have a DataGridView which populates from an SQL query just fine in default mode
using these table names
[firstName] [varchar](20) NOT NULL,
[lastName] [varchar](20) NOT NULL,
[code]....
I have edited the column headers and set the column names to the same values as my table names yet the data is not showing in form load I have set datagridview.AutoGenerateColumns = False I know the data is there if I delete datagridview.AutoGenerateColumns = False then the data is shown with the default headings?
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand
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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.
I have the following code in the Load event of my form and the 3rd statement obviously fails. My question, why does the code fail and not tell me about it? In other words, it fails and then simply displays the form without crashing. It also doesn't execute my 4th statement.[code]...
View 12 Repliesi am working on Scrollable form, when i am trying to print this form with PrintForm object its printing only the showing part not all the form this the code which am using. Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Me.PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable) End Sub
View 7 RepliesHow 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.
View 3 RepliesI have a form which has crystal report viewer. On form load it gives the following errorAn error occurred creating the form See Excpetion.innerException for details. The error is :Could not load file or assembly 'CrystalDecisons.Windows.Forms, Version = 10.5.3700.0, Culture=neutral, PublicKeyToken = asdad or one of its dependencies. The System cannot find the file specified.
View 7 Repliesi was wondering i have a picture box which is controlld by the keyboard, and the picture is able to leave the form. i was wondering how to stop it leaving the form without knowing the exact size of the form and using multiple points on the edge of the form.
View 3 Repliesform1 has datagridview, when I click "add new", form2 appears(details view, allowing me to add new records into datagridview on form1). when I click "add new" again, form2 appears again, if I click x times, form2 will appear x times. How do I stop the add new button and all the functions on form1 from working until form2 is closed?
View 6 RepliesIn VB.NET I've got two forms, on first one I have button, on second - two textboxes and "OK" button. I want to run procedure (Sub) on first form, then stop in the middle of it and wait for input on the second form. After that i want to process the data received from second form.
It looks something like this:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Open form2 for input
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The question is how to call the Form2 so that procedure is stoped till the second form is closed?
I want a stopwatch thing, to start on the forst form, and stop on the last form, and to show the time.
View 2 RepliesI got the below code from Deborah Kurata one of the msdn moderator on her webpage. Her code is to save the form size at runtime but i would like to modify it to save the buttons which i have dragged and drop. I tried to modify the code but i tend to when i put the Dim theButton = DirectCast(sender, Button) under the form load method. It put there cannot cast object. something like that.
Public Class Form1
Dim tm As New Timer
Dim Index As Integer = 0[code].................
I created a windows form which contains a datagridview. I named one of the columns in the grid 'location' which appears to have generated an error. The problem is I cannot load the form to remove the column as an error is generated and when I load the designer code it says do not modify with the code editor but use the windows form designer.
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Why is my MDIChild form not being displayed in my MDIParent form? I want to click a button on form frmStudyResultsFilter which will then display an MDIContainer form frmCalculatedResults (maximized). When frmCalculatedResults is shown I want a small dialog modal form to be in the center of frmCalculatedResults. For some reason frmCalculatedResults will not show on top. Plus I get this error"Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling ShowDialog." Here is my code:
Public Class frmStudyResultsFilter
Private Sub btnCalculated_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculated.Click
Dim frm As New frmCalculatedResults
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am trying to figure out why my 2nd form is not displaying the value i recived in my first form.The code for the first form is:
Private Sub scannerOnCom_DataReceived(ByVal sender As Object, ByVal e As SerialDataReceivedEventArgs)
responceBack = scannerOnCom.ReadLine
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I'm sure I'm doing my login process for my app in a not so perfect way, but as with lots of things, it works. The issue is to make it work I have to use the very unpopular DoEvents thing. I would like my application to show a login screen before loading my main form. Currently I have a login dialog box with a FormOpen boolean property and an authenticated boolean property. If a user logs in successfully, I hide the login form, set formopen to false, and authenticated to true. If they cancel out, then I do the same and just set the authenticated property to false. If authenticated=false then I end the app, else I show the main form via application.run(MainForm)
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I'm currently using VB.Net 2008. The project has the "make single instance application" checkbox checked. The application works by hiding the form when the form is minimized.
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I am making a Sport Carnival timer for a local school. Currently, I have the results go into another form that I want to get printed. I tried using the PrintForm method, but it did not work as I have to show, and have that window open to print it. This form also has graphics that I want to print too.
View 3 RepliesI'm trying to figure out how to set the form's location/size before calling the .show method. I figured out the location part, but still can't figure out the size part. No matter what size I set the form to in the designer, it never uses that, so I figured I would set it with code right after setting the location.
'set location before .show
Form2.StartPosition = FormStartPosition.Manual
Form2.Location = New Point(103, 449)
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How do i load the Main form of a WPF so that a seperate thread goes and gets data from the database while the form is in an apartmentstate? (drag-able / movable) I Know this is possible with opening a new window from your main form like this :
Private Sub openOrderWindow()
Dim OrderWindow As Orders = New Orders
OrderWindow.ShowDialog()
End Sub
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I've tried putting MyBase.ShowDialog() and .Show() and .9000+ other things The only benefit I've got out of using a seperate thread to load from the databse is i can see the screen right away (as oppose to it being a transparent box until it loads) but i cannot move it around or minimize it?is there any way to make it Movable while it loads?
i am asking about using the progress bar into the status bar to move when i load any child form inside the MDIParent form.
View 1 RepliesI have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be refreshed and show the newly added record when I close form B and go back to the parent.
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i am having an issue populating two combo boxes on form load. The program will connect to an access database and pull data as instructed. Then as it pulls each record it puts it into the combo box.
This was working.. atleast i think it was. i dont recall it ever not working, however i wasn't looking for it.
My problem is that if when i load the MDI parent form and have it skip the selection form and the login form and load the next form in the sequence, it loads everything perfectly. However if the select form is loaded first, then the login form and then the form i need loaded, it will not populate. The only difference between the two different loads is that the login form calls a function that loads the form as a new project.form
I did this so that I can have multiple forms open at a time. I am assuming my problem is that I need to get the child forms handle then populating controls using that handle? but i think if I had to do that then I would beable to populate the comboboxes on the first form load using the login method of opening the form.
Here's my code.
vb.net
Private Sub frmLine1t5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Text = "Line " & LineNumber & " Test Form"
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I want to load a child form which is a login form by default when the parent form is loaded.Right now when I click new file on the toolbar of the parent form, then only the login form is loaded but i want it be loaded by default without clicking anything.
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