Im having a bit of a problem passing variables from one form to another. Oh and for some reason my saveing sub routine dosent work, i cant get it to save the file in text format.
Public Class DijkstrasAlgorithmFinal
Dim x As Integer
Dim Dijkstras(4, 3) As Integer
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I am using Visual Basic 2008 for this assignment. I have a project that I am working on and I need to be able to use form variables across the entire project.
I have looked on other forums but no definitive answers.iI have declared variables as such Public StrV21true As String and "Public StrV21False As String
Now apon assigning a string to the variable with an If Then Else Command, I go to the next form expecting that the assigned variable will be available for use in this second form but to my dismay it tells me that the variable has not been declared and will not even show up in Intellesence. Like I said before from research on the net I am using the public class in Form 1 to hold the variables and am kind of expecting the public class variables to be available through all the forms in the project. I would really like to know how to do this so as I can finish my project for class.
I've got a form in my MDI container. Lets call it Form1. I now want to show a dialog box (Form2) and pass the primary key from Form1 to Form2. Do i create a public function on Form2 called SetMe() or Do I create a public on Form1 And read from it? From a best Practice point of view, How would you go about it?
View 1 RepliesI am passing 2 variables from form1 to form2. In form2 I want it to where it will filter my dataset according to the variables in form1, before it's displayed. In form1 it works, but when passing those values (JT & WRID1) to form2, it doesn't work.
Form1:
Public Class Form1
Friend JT, WRID1 As String
Private Sub ShowForm2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowForm2.Click
JT = Me.dgvWLog.Rows(dgvWLog.CurrentRow.Index).Cells("dgvJT").Value.ToString
WRID1 = Me.dgvWLog.Rows(dgvWLog.CurrentRow.Index).Cells("dgvWRD1").Value.ToString
End Sub
End Class
Form2:
Dim s As New Form1
Dim JT As String = s.JT
Dim WRID1 As String = s.WRID1
Me.DataSet.Form2_Get.DefaultView.RowFilter = "WT = '" & JT & "' And WRID1 = '" & WRID1 & "'"
I'm upgrading a project from VB6 to VB2008.I have a routine that clears a combo box, named 'cmbDataTable' which could be on any form. I pass the form and the combo box is cleared.
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I assumed it would be the same in VB2008 but I get the error.'cmbDataTable' is not a menber of 'System.Windows.Forms.Form'I am working my way through the project, first updating the global procedures - this is one - I haven't written the calls so cmbDataTable doesn't yet exist.
This is what I have..Dim frmSettings As New frmOptionsfrmSettings.ShowDialog(Me)frmSettings is a settings form that you can choose the color for background of form1(Me)
View 1 RepliesI 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.
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.
View 3 RepliesI have code, shown below, that works all except for 1 thing: The variables being passed byRef get passed, but once modified in the else section of the "if me.invokerequired" code of RecordData, the variables are never updated in the calling function. To reiterate, the calling function does not receive the updated data that is in the variables custid and amt.When debugging, I see the data change in the else section of "if me.invokerequired", but once it returns from the callback the data is missing.[code]
View 15 RepliesQuestion 1: What is the difference between "Background Worker" and "Worker Pool" as indicated within the MSDN samples provided.
Question 2: I noticed while using, AddressOf _Function_, variables cannot be passed; what would be an efficient solution to this?
Question 3: While using multithreading is it required to invoke before setting variables, or only form properties?
Question 4: While using System.Net.Sockets is it safe/efficient to use Application.DoEvents while waiting for new data; or would be using a Do While loop be fine without DoEvents since the action would be multithreaded? Note: there can be up to 2000-3000 sockets in use at a time.
i am try to pass the text input into the text boxes in form ( OrderScreen) into the text boxes in ( PrintOrderScreen)I don't get any error it just does not pass the text over to the second screen.
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When working with a collection of forms that the user must step through, is it better to pass the data foward when creating a new instance of that form, or is it better to call a function from the previous form? I have some code written that calls the previous routine, and it looks ugly, and I can't quite think of a reason why it was done that way. The only reason I could come up with was if the data was large, and there was a good chance that the user wouldn't use the data except in a special case.
View 7 RepliesI have a form with 2 dropdownlists and a submit button. I want to pass the values of the lists in a URL when the list is submitted but for some reason the initial value of the ddl is getting passed. Here's my code:
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I have a form which contain Two textbox control. When I passing the Form to Procedure the textbox controls of the form not getting say I am giving Exaple.
Code:
Public Class Myform
'This Form Contains Two Controls TextBox1 And TextBox2
'Calling the Procedure
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I am in great trouble. I have a form which contain Two textbox control. When I passing the Form to Procedure the textbox controls of the form not getting say I am giving Exaple
Public Class Myform
'This Form Contains Two Controls TextBox1 And TextBox2
'Calling the Procedure
[code]......
I have 3 forms, the form one is an intro, form 2 loads a user and form 3 displays a user. i use the streamread / writer to load values on form 2, then when successful it loads form 3 and the vaules are transferred perfectly, now to save time i changed the start up form from form1 to form2 (saves having to skip every time). so after having all the code load and transfer i wanted to see it in action and then the issues started.
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I have a 2nd form that is minimized to the taskbar, I can click on the tab and the form opens and shows all of the data fine, but
From the main form, I am maximizing the second form and trying to pass a value to a toolstrip textbox on the second form then press a button on the toolstrip from the second form, I can get this to work fine, but where I am having a problem is
The button searches through a treeview, when I step through my code, I can see the value that I am passing, my code does execute, but the treeview is showing no nodes(but they are really there). At the begining of the code, I put a message box to give me a count of the nodes in the treeview, it shows 0, but I can see all 10000+ nodes. What the textbox is on the toolstrip is a search box. When the form is maximized, I can enter whatever and it finds it with no problems, but if I pass a value it doesnt find anything because the treeview is saying there are no nodes when there is.
I have simple app with Form1, Form2 and Form3. Form 2 is being opened with button form Form1. Form3 is being opened with button from Form2. Form1 is startup form. I can call any public sub on Form1 from Form2,(using on Form2 command "form1.mypublicsubname". If I try to call public sub on Form2 from Form3 nothing happens. If I put simple Msgbox "Hello" in public sub on Form2 and I call it from Form3 I do get Msgbox saying Hello. If I put in same public sub something like me.mydatagrid.refresh nothing happens. Also if I try calling me.mydatatableadapter.fill nothing happens. I guess it has something to do with invoke but I just don't know where to start.
View 10 Repliesi got 2 forms.there are 2 buttons in the 1st form and what i wan is,when a user click button 1,then will show form 2 will related data,click button 2 will show related data which is different with form 1.so far wat i get is,i oni manage to make when a user click button 1,then show form2 n in d form 2 there is another button to click n get d data...which mean i nid 2 create more forms...erm...u can say that i would like to make the form 2 to become a template...and send data into it.[code]i just wana make like i click button1 in form1,it will pop out form2 wit related data.
View 7 RepliesI am having trouble passing my summary info from my main form to the summary form. Only thing I have been able to have it do is show me the OK button to exit the program which is essentially no progress
View 11 RepliesI have a form with 2 dateTimePickers and a SHOW button which gets data from an sql server database and displays it in a DataGridView. this works ok. I also have an EDIT button which brings up another form with textbox and comboBox controls displaying this one record. I want to be able to click in the DataGridView to select a Name and then click on the EDIT button to bring up the selected record. I don't know how to pass the ID as a parameter to this second form. Apart from that the EDIT button works, in the sense that I hard coded the ID (32 or 35 etc.) and it brings up the appropriate record. But how do i pass the selected ID. [Code]
View 2 RepliesI have a DB with ~25,000 records that I keep in memory, and I need to pass one record to a second form for display.
code snippet follows:
Structure User
Dim First As String
Dim Middle As String
Dim Last As String
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The second form opens on second screen (Dual monitor) but I'm not sure what I did is correct. I have hit a wall on how to pass the single record from the structure to the form.
i have a listview control on form1. I want to send the selected value to form2.
I tried couple of ways but nothing seems to work correctly.
I know in VBA you could pass an entire form as a varible. Since using global variables are not advised in .net 2008, is there anyway to do this ?
View 9 RepliesI am trying to develop a .NET class that updates a VB6 Form and its controls with various new captions (It is in an assembly that is COM visible).
I pass a VB6 form ByRef as an object to the .NET class and then update the caption etc on the form as follows:
Public Sub AddFormRefLegacy(ByRef objForm As Object)
Try
objForm.Caption = "some new caption"
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I have a Form1 with a query, and I want to display the results in a DataGridView in Form2, like this:
Form1:
VB
Dim Db As New DataClasses1DataContext
Dim Qry = From country In Db.Countries
Select country
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I hav a datagridview,which looks like this:ID
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i doubleclick a row,lets say highlited row...then this row value should appear to another form which hav 4 textboxes ( id , name, marks and grade).
I have a CheckingAccountForm and a CheckingAccount class. I have 2 variables AmountEntered and TotalAmount. The user enters an Amount and hits the calculate button. So now I send the AmountEntered to the CheckingAccount class where it is added to the TotalAmount and I have to send the TotalAmount back to the CheckingAccountForm so it can be displayed in a textbox. Can someone give me an example on how to do that? I get the AmountEntered to the CheckingAccount Class and managed to calculate, but not sure how to get the TotalAmount back so I can display it in the GUI's TextBox for the TotalAmount.
View 3 RepliesI am returning to programming after a long absence (last real work done in VB5.0). I'm trying to do a small customer management project. I'm starting off with a DataGridView on one form showing a reduced number of fields. When the customer is selected a second form gives the full details. I struggling to find a clean way of passing the selected record to the second form. Both forms are using the same dataset.
View 5 RepliesDoing a small project where I would like to be able to print the results of certain calculations. I want to open a new form where the data can be neatly presented and printed. I just can't seem to make the data get passed along to the new form when I open it..
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