Have A Modal Form But Be Able To Access Another Already Open Form

Jul 20, 2010

I have designed my app for multiple gridviews. When a user double clicks a row it opens up the data in a modal form and when they commit changes the row gets updated.While they have that modal window open they can not go back to the grid.But I have a alerts/messages window always running (like outlook tasks). As soon as I open the modal window I can not access that tasks window. (Default behaviour)How can I open the modal form and still let the user access/view the tasks window while they work on the modal window.(I tried creating it in a differant thread, but got a lot of cross thread errors so decided to abandon that approach.I thought that 2 modal form can run at the same time as long as they have differant parents. But aparently the main GUI thread pauses as soon as you open a modal window on it.

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Open A Form As Modal Without Using Showdialog()?

Feb 11, 2011

I want to open a form as modal without using showdialog()Problem with showdialog() is we can not open the form as mdi child with it. i want to open few forms as modal but as mdi child forms. but i want to make sure user cannot go anywhere else without closing thst form.if we set parent form enabled = false then i can not set it as mdi child otherwise that form also becomes enabled=false.

if we write showdialog() then so many form icons will appear on taskbar. it we open as mdi child then only one icon appear i don't want to appear so many icons on taskbar so i want to open as mdi child but as modal

for eg. Mainform = mdi form
from mainform open formA = as mdi child of main form (but modal)
from formA open formB as child (modal)
from formB open formC as child (modal). if i use showdialog() then so many form icons on taskbar.
h2007

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Jan 26, 2010

I'm new in .Net and I have an application with windows form "LOGIN" When users enter the user and password and click "ok", then if user passes validation then I have the code Show(MDIMainMenu) (I'm trying to open an mdi form), but I receive the following error: "Form that is already visible cannot be displayed as a modal dialog box. Set the form's visible property to false before calling Show. Error Number 5"

[Code]...

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Oct 28, 2010

I have a VB. Net App where I want the user to open a modeless form which contains reference information about items in a select box. If the user double clicks the item selected in the list box a modal form is opened to edit the item.I want the previously opened reference form to remain active/enabled, that is, I want the user to be able to click on it, move it, etc.I was able to get the form to at least show up on the task bar by setting it's "ShowInTaskBar" property to true, however, when it comes to the front the user can still not move it to the side to view all of the Edit Forms information.

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Aug 7, 2009

I'm having an interesting issue that I can't reproduce on a different project, but can consistently on this one.  I have no clue what might be causing it, but am hoping that someone may have seen it before.

I have a main form, from which I run a series of checks.  On this form, I have a listview control. Because of some issues with the refreshing of this listview control, I had to create my own messagebox.  It's just a form that displays some text ( it also happens to look nicer than MsgBox; in my opinion, anyways ).  It's been working great for months, until recently.

My problem is that on my main form's load event, I run this check, which returns an error within a try/catch block. I then call my custom messagebox with a message.  It in turns calls it's ShowDialog() function.

In any other situation ( after the main form has been loaded ), I have no problems. The messagebox goes on the screen and behaves appropriately ( ie: waits for my input and acts as a modal dialog ( stops execution of my main form's thread ) ). However, on this onload event, my messagebox comes up and goes away almost  immediately afterwards.

I've traced it all the way to the showdialog() call.  For no explicable reason, it appears to skip right over this call, without me doing anything on the form.

Here's what the inner trace looks like ( when I put a breakpoint on the onclosing event for this messagebox form ):

CODE:

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Feb 3, 2010

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Apr 18, 2012

I have a form in a vb.net windows form application called PolicyRefreshStatus.vb that has a ProgressBar control on it. From the main form called EditPolicy.vb I need to show PolicyRefreshStatus.vb over top of EditPolicy.vb - but the way things are wired I'm controlling the the ProgressBar and it's steps from logic inside EditPolicy.vbIf I display the PolicyRefreshStatus.vb bar using the .show() method things work fine.The problem is if the user clicks back on the main form then PolicyRefreshStatus.vb losses focus. If I show PolicyRefreshStatus.vb as a modal form using .ShowDialog() then execution halts in EditPolicy.vb after the .ShowDialog() statement.

so for example in the code:
mPolicyRefreshStatus = New PolicyRefreshStatus
mPolicyRefreshStatus.pbMax = mPolicy.ClaimsUpdateMax

[code]....

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Aug 11, 2011

I am trying to pass information to parent form from modal form in vb.net winforms application.

1.) I created a copy of a form and displayed it using following code.

dim f=new frmParent()
f.show()

2.) Depending on conditions a button on frmParent opens a modal child form and asks for some informations. I used following code for that:

dim f = new ChildForm()
f.showDialog()

Both code works fine. When user press saves in child form i need to close childForm and use the user types values in parent form. I know how to close the childform but not sure how to pass info from childform to parent form.

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May 10, 2009


I've been trying to open Access reports from my application. The code I've been using opens the report but also prints it. I only really want the report to open.Here's the code ...

Dim accRpt As Object
accRpt = CreateObject("Access.Application")
accRpt.Application.OpenCurrentDatabase(strFileName)[code]....

Going through the code line by line I'm pretty sure I understand whats happening, but I'm totally stuck on why the report is sent to the printer. why the report prints?

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Mar 20, 2009

I have a main form that has a button with which a smaller form is shown. Think of the smaller form as the Find/Replace dialog in many applications, such as Notepad. It's important that the form is (what I believe is called) modal. What I mean is that it always stays on top of the main form. I ensure that by calling the Show method with "Me" as the owner argument. Whenever the small form loses focus it will not disappear into the background but stay visible (albeit out of focus). If you don't understand open up Notepad and have a look at the behavior of the Find/Replace dialog.

Here's my problem: instead of actually closing the form when the X is pressed, I want it to simply Hide itself, so its position and the state of any controls (checkboxes etc) is preserved automatically.To achieve this I simply cancel the FormClosing event and Hide it:

vb.net
Private Sub Form2_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing

[code]....

To show the form, I use the following (note the (Me) to make the main form the owner of the form; this ensures that it remains visible even when it is out of focus):

vb.net
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form2.Show(Me)
End Sub

Now. When I run my project, and open the Form2 (small form), then hide it again (by 'closing' it), I can no longer close the main form (Form1)! It seems the main form cannot close when the small form still exists (albeit invisible)...?? When I don't use the Me argument in the Show method, I don't get the behavior I want. I know I can set the TopMost property to True but that will also cause it to become visible on top of all the other forms, even windows not part of my application.

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Jun 12, 2009

get a button on form A to open form B and then close (not hide) form A when clicked?Background:  I am coding a VSTO application for Excel in VB2008.

Private Sub FormAButton_Click(ByVal sender As System.Object, _     
ByVal e As System.EventArgs) Handles FormAButton.Click     
Dim FormB As New FormB     

[code]....

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I've looked at using Microsoft Internet Controls(shdocvw) and MSHTML(IHTMLDocument2) but I am struggling on how to access elements of the browser window (e.g. body.innnerHTML).

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form2.ShowDialog()

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Feb 23, 2009

How I Can open the same form in my application one time only can not open the form tow time in same time

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Mar 29, 2009

I've created an Excel COM add-in that has several forms. The application has the following forms:

FormA (Modeless): Excel.Application is parent
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[code].....

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Nov 17, 2009

I have a situation where I need to display a Modal Window from a vb.net module and feed the contents to that modal form from the module.I am showing the form , feeding  data to it from a class module and trapping the events in it using a timer control from the module.It works fine with Show() method but it doesn't with ShowDialog().If I used ShowDialog() then I was not able to continue with the code followed by it and not able to update any contents in the modal form.

I am using VS2003 version.Is there any workaround to this?

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Sep 20, 2010

If I have a form open already that is not modal, can I turn it modal by the click of a button on that form.

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Nov 17, 2009

I have a situation where I need to display a Modal Window from a vb.net module and feed the contents to that modal form from the module.I am showing the form , feeding  data to it from a class module and trapping the events in it using a timer control from the module.It works fine with Show() method but it doesn't with ShowDialog().If I used ShowDialog() then I was not able to continue with the code followed by it and not able to update any contents in the modal form.

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Apr 1, 2010

As part of my design for a re-write of some vb6 code, i've got some business rules that check the data being entered. These rules run on the business layer, but if they find any data that is incorrect, they need to display a modal form showing the 'violation' (or could be a warning, a question or some information).

So what i'm after doing is to somehow display a modal form in my presentation layer triggered by my business layer.

The only solution i've come up with is to raise an event to get the modal form displayed, catch the event in the presentation layer and display the form (all items on the form would be bound and so would display the correct information). Problems with this is that i would then have to put the code to sleep in the business layer until i got a responce from the presentation layer.

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Aug 17, 2011

All of my forms are MDI children. I have one form that is collecting input parameters for a report. One of the parameters needs to come from another form. For the life of me, I can't get it to work.

[Code]...

I have to message box code just to verify the selection. glbPart is just a hand off parameter to tell the frmVendorList code to come back to this form rather than where it was origianlly programmed to go.I tried a do until glbVendor <> "", but that put me into a death loop and I never got to select a vendor from the vendor list form. Obviously, the easiest would be if I could make frmVendorList Modal, but I can't see how to do that once it's been created modally.

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May 18, 2011

I have a form with a browser inside. When loading this form I set the browser.navigate to a url.Now to display this form I used the: form. ShowDialog()to have the form modal (which is what I want).But now when I close this form and reopen it, the browser doesn't refresh (the navigate doesn't start)this is beacuse closing a Showdialog() form doesn't unload it from the memory. To empty the memory I used the.[code]It closes and when reopened it reload the page, but it's not modal anymore and also closing the main form doesn't close this form.So what I would like is to have the form with the browser modal, but every time I load it, it should navigate to the url set.

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Jun 4, 2010

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EDIT: Ok, I suppose some code is necessary? In I would like to return the "longPath" string variable(near bottom of second pic) to form1(first pic).

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I'm trying to create a child form that helps the user to enter data for a field in the parent form. I want this child form to be modal, but I don't know what I need to do to make this form modal. Perhaps there's a different type of item I need to use; if so,

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[code]...

I am going to simply assign the value to a global variable inside the PropertySettings Class but everything I try seems to fail in one way or another...

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Dec 18, 2009

I have a modal form that does double duty.When a user wants to add a new object to a database, I open the form blank and they fill it out. When the form closes, all of the data is passed back to my main form and is used to create the new object in the database.When a user wants to edit an existing object, I open the form and pre-populate all of the fields with the object's data.I'm running checks on the form as they edit the fields, only enabling the "OK" button (which will update the database) if the form has actually been changed. If they make a change and then undo it, the "OK" button is reset to Enabled = False.At the bottom of the form are a ComboBox, two buttons and a ListBox. The intent is to allow the user to select an item from the ComboBox and "Add" ("Add" button) to the ListBox, or select an item in the ListBox and "Remove" ("Remove" button) it FROM the ListBox.

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Jun 5, 2010

I have a parent form, which can lanch a dialog box. A wrong selection in the box launches a message box with an error message. When the message box pops up, the dialog box disappears, so the messagebox is sitting on top of the parent form.Once the user clicks "OK" in the messagebox, the box disappears, and only the parent form remains.How do I make it so that the dialog box remains when the messagebox is displayed? And also, I want the dialog box to remain when the user closes the message box. The user should have the option to make the right selection in the dialogbox once the messagebox disappears.I tried to hunt for a property for the dialog box to achieve this, but couldn't find any.

Here is the code in the parent form to lauch the dialog box, and to also launch the messagebox, when the user has made a selection in the dialogbox:[code]Am I having this problem because all the code to launch the dialog and message boxes reside in the parent form? If I put the code to launch the messagebox in the dialog box, would that make the dialog box persistent when the messagebox is launched? I am putting all the code in the parent form because it can process the DialogResult.

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Although I found the control from the modal popup with the below code
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This is being called on button click when the user has finished selecting from the Checkboxlist.

When the parent page is shown again though the textbox is empty.

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[Code]...

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Based on our tests primarily done in VB.NET in VS2010 it seems that when you close a WinForm the "RowValidating" event of the DataGridView on that form behaves differently depending on whether the form is MODAL or NON-MODAL. What we did was open the form (MODAL and NONMODAL) and changed a value of a cell and then immediately clicked the "X" to close the form. It looks like the "RowValidating" event DOESN'T fire if the grid is on a MODAL form but it DOES fire when the grid is on a NON-MODAL form. We can't figure out why that is... Is this a known bug in .NET?

[Code]...

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[Code].....

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Using the code below:

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[Code]...

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ETA: The problem does not occur if I open the form using a key.

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