I have an array of variables called VolumeArray(12) which is declared as publlic shared in the main form1.I have a second form2 which allows the user to input various values. When this form2 is closed, I need the data the user has entered to update the values for VolumeArray(12) within Form1.
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I am trying to access a control (statusbar panel) on my MDI parent form from a child form.
Here's my
(located in child form)
Dim frmParent As frmMain
frmParent = DirectCast(Me.MdiParent, frmMain)
[Code]....
Object reference not set to an instance of an object.
I have an issue when I place a label box in the MDI Parent form and then open a child form the label box highlighted in child form?
View 6 RepliesI have a program I've been working on for some time now and I'd like to try to streamline it somewhat. I have a main menu form that has a split panel, in the left panel is a treeview that displays forms you can open and when one is selected, it opens in a child window in the right panel. Each time I open form I called DWNForm, it does a series of dataset loads which are the populating items for a series of listviews.
What I would like to do is have these datasets load once during the mainMenu load and then have the DWNForm be able to access the datasets once it is called from the treeview selection.
Here is the pertinent part of my code:
Public Class Form1
Inherits System.Windows.Forms.Form
Private Sub MenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
i am having some trouble in my Windows form application. i have 2 forms1st Main / Parent Form2nd Sub / Child Form (Menu)
View 7 RepliesIt has to be a simple line of code but I do not know how to construct it. Using VB 2010 Express, I have a MDI parent form and many child forms. I want the parent form to determine what child form is active and load data into the RichTextBox1 on the child form. Each Child form has a RichTextBox1. The parent form gets its data by loading a file.
I am close to a solution but just can't get there. You will see in the code below, if I make a direct reference to a specific child form, it works great. What I want to do is to use the Active Form function to determine which form to write to. I have looked at the MS tutorial which gets me close.
Private
Sub OpenToolStripMenuItem_Click(ByVal sender
As System.Object,
[Code].....
I 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.
[Code]...
I have a MDI Parent form created with a MenuList, I also have the MDI child form created.ow do I go about using the MenuList to open the MDI child form within the parent form?
View 1 RepliesBasically I have two forms - Form1 has a DataGrid on it (Infragistics) and in the double-click row event it creates an instance of the EditForm and passes along the UniqueId for editing. Once the user saves the changes (if they make changes) - I want the DataGrid on Form1 to refresh. Here is how I thought I could get this to work ... I create a public property called RefreshRequired as boolean. Before unloading the EditForm it sets this property to true. Then Unloads. This continues the code in Form1 (which showed the EditForm as modal) but RefreshRequired is still showing as False? Why isn't my EditForm able to set the property?
FORM 1
Private Sub grdList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdList.DoubleClick
' TODO Ignore Double-Click Event when Right Mouse Button Triggers Event
[code]....
form1 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 RepliesI have a date selector on mdi parent that updates a property when date is changed. When I open a child form, it grabs the property just fine. However if I change the date again after the child is open the date does not change on the child unless I close and reopen the form as expected. What would be the best way to automatically update all open child forms when the date is changed on the parent at anytime? running a timer to parse the date property is impractical.
View 2 RepliesI have two forms....Mainform is filled with controls that are databound to a datasource.....then I have a child form that is used to edit data from parent form.......the data that is displayed on the child form uses the Filter() method of the binding source to display data only for the customer selected......
The child form has the standard OK and CANCEL buttons set up as dialog result.......after I edit the content in child form, the changes are displayed on the child form correctly......but when closing the child form and going back to the parent form the changes dont appear there unless I restart the application.....I also tried adding the tableadapter.update/fill method in the 'OK' dialog result event handler and it still doesnt work......
How can I make the changes take effect on the parent form without restarting the application?
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.
View 10 RepliesI have a parent form that has a list of items and each item has a unique ID. The user can open one or many of the items in a child form (it is set up in a tabbed MDI), but it can only open one instance of each item at a time.
In the parent form, I was going to make a collection (or something like that, maybe there is a better way) to keep track of which items are open in the child forms. I need to know when each child is closed so that it can be removed from the collection and reopened at a later time. I was thinking that when the child form closes, it somehow does something (like raise an event) that tells the parent form to remove the unique ID from the list of current open child forms.
My questions are, is this a good way to do this and I am pretty sure I would use the form closed event in the child form to update that parent form, but as well, I didn't know if this is the best way of handling it.
If raising the event is a good way, are some examples on how to do it out there? I found some for controls, but not while the form is closing/closed.
How can I disable the parent form when I call a child form?This code doesn't disable the parent form like I thought it would:
frmChild.ShowDialog()
Communication between form can be done in many ways using constructor using delegates etc in .net but my question is how can i access a value that is entered into a child form from a parent form or can a two way communication is possible between windows forms.
View 1 RepliesCould i call the child form events like (closing ,load, activate,closed) .
View 6 RepliesI am having some trouble in my Windows form application. I have 2 forms:
1st Main / Parent Form
2nd Sub / Child Form (Menu)
Problem:
I want to close my 2nd form (which opens on top of 1st form) when I click on the 1st form.
i have a parent form-->frmComparisonTool the child form is-->frmIterationWindow i used the following codes to integrate the second form to the main one:
Private Sub ComparisonTool_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim debuglist As New IterationWindow
debuglist.TopLevel = False
Me.DebugWindowPanel.Controls.Add(debuglist)
[code]....
my application have a main form. i have set the isMDIcontainer to true on the form properties. How do i set other forms to child form of the parent. i need to do this because the other forms start position is CenterParent.but as it is now when i run the program the other forms start position is not the parent form centre.Secondly, how do i disable the parent form when a child form is on display. so that user cannot click on the parent form until the child form is closed.
View 1 Repliesdisable the parent window form as soon as the user will open the child form....
for eg...consider daniweb...when we click on member login the background form gets grayed out....
Disabling the form is not the option cause it will just disable all the controls of the form....but I need a grayed out screen between the current child form and the parent form....
note - the parent form is not the MDI form...it is just a normal window form and when the child form is open and if the user clicks on the main form without closing the child form then the screen should show some movement...
I tried disabling the form...changing the background of the form to opaque....but could not get through it....
I have a form that I inherit from.This form has some event actions like "load".Is there away to get the inherit child form to run that event on itself instead of the parent form.For example if I have frmTemplate.Load and frmChild.Load. The actions inside of frmTemplate.Load should be ran on frmChild changing any references to frmTemplate to frmChild.
View 10 RepliesI have a custom form that I use instead of msgbox for a number of reasons. The initial reason was to keep the message centered on it's parent rather than the screen. There are many articles about this but I still have not found an elegant way to get access to the Parent's properties from inside the Child without passing them in (by one way or another).
In the child form the me.parent, me.parentform are not instantiated and apparently can not be used.
The point is to have this form be totally encapsulated with the logic being self contained. This is not an MDI child, and I do not want it to be due to the limitations on MDI children.
My current workaround looks like this I use a ShowMsg Function in my MyMsgBox form which looks like this:
[Code]....
I have three forms: A, B and C. Upon a button being clicked, A displays B. Similarly, B displays C. Both using the ShowDialog() method.
However when I use the Hide() method (inside a Button Click event) on form C to close it, form B also closes. Why would this be? As far as I can see, it shouldn't be doing this. I certainly didn't write any code to tell it to do that.
[Code]...
UPDATE: I am an idiot. DialogResult was set to Cancel on the button as I'd copy+pasted it from the existing Close button and not realised that property was set
I have two form :
class form1 'parent form dim number as integer
public sub create ()
dim f2 as new form2
f2.MdiParent = me[code]....
In form2.vb how to use variable number and method test
how to minimize child form inside of parent mdi form in vb.net? I change the property of "IsMdiContainer" to "True". but when i minimize parent mdi form, it is not minimize the child form.
View 2 RepliesTake a scenario where I have three forms - B and C. Each of these forms has a text box (could have more than one) There is another form X which has a button. The form X can be called from A, B or C. Now, when I call form X from, say A, form X gets displayed. When I click the button X, a value needs to be written on a textbox of the calling form, i.e. A. Similarly, if B calls X, then on click on the button in X, a value should be written in the textbox of B.
View 1 RepliesI have a picture box created in the parent form.But whenever i call a child form, the picture box will be at the top and cover the child form.I try with SendToBack and then it is completely hidden at back ofthe parent form.
View 3 Replieshow to set location of child form to a specified point of parent form.Below is my code but it is not working for setting the location.[code]
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