"LIST" Form That Calls Another "DETAIL" Form In A DLL?
Feb 21, 2011
I have a "LIST" form that calls another "DETAIL" form in a DLL. This "DETAIL" form DLL runs and needs to call a function in the "LIST" form and provide feedback to a ToolStripStatusLabel on the "LIST" form. I can set a reference to the "DETAIL" form DLL from the "LIST" form so it can
call the "DETAIL" form but a circular reference is caused when I attempt to set the form "DETAIL" project reference to the DLL of the "LIST" form project. I now have a "DETAIL" form project which cannot get a reference to the "LIST" form project to call function and update the ToolStripStatusLabel. There's probably something simple I'm missing here. Does anyone have any ideas on this?
I use a simple master-detail form using Visual basic 2005 express edition and ms sql server 2005 express edition, as well.
The master table is dept (deptno int, dname nvarchar(50)) .
The deail table is emp (empno int, deptno int, ename nvarchar(50)).
The primary key for the dept table is deptno and for the emp table is empno.
There is also a foreign key (deptno on emp table).
I created a new project, connected to a db (called test.mdf) and created a data source consisting the two of the above reffered tables.
I dragged and dropped these tables on the form and i noticed the following:
1)When the form opens... the system queries the database and displays the data on each block on the form.
2)I insert and/or update a record on the master table (dept) and everything goes well...
3)I try to insert and/or update a record on the detail table (emp) and nothing is changed on the detail table - without any error.
4)When i try to insert and/or update a record on the detail table (emp) which violates the primary key constraint or foreign key the system complaints...(as expected).
I designed a form - please see a picture My first intend was to "link" each button on the menu [Employee Management, Contact Information,...] to different forms by coping this form and then designing the contents of the form using many repeated following code
2) Orders Table Contains fields -- Product Code , Product Name (These 2 fields Stores Product ID instade of Code and name.)
In my Orders Form, in datagridview I am showing actual Product Code and Product Name from Product Table using 2 datagridcomboboxcolumns by setting Display Member & Value Member Properties.But now I want to do If I select any Product Code from first combobox in datagriadview the other should display the Product Name of the selected product automatically. this can be in Master-Detail Form as well as normal single data form.Also, please tell me if it can be done in VB2008 Professional Edition.This we can do in Microsoft Access 97 & 2000. And it is very easy.Is it available in VB2008 like MS Access 97 & 2000.
I have 2 datagridviews on my form. One lists products and when you click on a product in the first datagridview the other lists tests for the selected product. I have a products table with a productid,productname and productcode. I have a tests table with a testid and a testname and I have a prodtests table with a prodtestid, productid, testid and a few other fields.
Public Class frmProducts Dim myConstr As String Private WithEvents ProductBindingSource As New BindingSource Private WithEvents TestBindingSource As New BindingSource Private Sub frmProducts_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load [Code] .....
Also I need to add a combobox column to the second datagridview that is bound to my prodtests table and to list the testnames from the test table in a combobox. In my save button, should I just call both adapter.update methods to save all changes. I will add the appropriate update commands etc.
I have a tree that reads its data from SQL Server Express 2008 Database and the script is working great , I need to display the data related to the node clicked in a details list or whatever , meaning that when a use clicks on a node he should see the data relating to it on the right side
I have two forms, A and B, as master/detail forms. A has a grid and a button. When the button is clicked, B is instantiated and shown - at this point, B is a local variable. When stuff happens on B, I want to refresh the grid on A. I had intented to declare B WithEvents and have A monitor for when the event is raised, but that doesn't work, since B is decalred locally.
I am new to VB and to this site so please be gentle. I have a form with a Data Grid View (DGV) control that was created by draging a table to the form (bound?). I want the user to be able to reposition the rows to the one they are interested in, which I have done. Once they have selected the row they are interested in I want them to click a button labeled EDIT. All good so far.
I have a detail view control in my aspx form. I have the following field in my detail view: NameId Name ContactNo But I dont want to allow the user to edit the "NameId" field. So I set it as read only and Insert Visible. But setting it dosen't allow me to update. If all the fields are set to be allow for editing, the update work successfully. How should I go about doing it?
Any right way of selecting data and updating? This code is working, but i wonder if there is a way to have only one update command which will update all tables?
Private cs As New SqlConnection("Data Source=...") Private da As New SqlDataAdapter("Select * FROM tblContactsProfil ORDER BY LastName", cs) Private daLookUp As New SqlDataAdapter("Select * FROM tblContactsProfilAddress", cs) Private ds As New DataSet Private bsMaster As New BindingSource [Code] .....
I am new to VB.net and have created a simple master detail windows form. I created a two table data set and then dropped the master table on the form as a continues form or a detail form with several text boxes to hold the data. The child form is a data grid.
test data that I have added directly to the database shows up with the proper parent child relationships on the form. I can also enter new records into the database using the parent only portion of my form.
When I attempt to enter a complete record with data in both the parent form and the child data grid I get this error. The INSERT statement conflicted with the FOREIGN KEY constraint
[Code]...
I have searched for a possible reason for this error but can not find any explanation. I have noted in earlier versions of VB.net you had to enter code to save the child record, but the VB 2010 code does not seem to use the same syntax so I assumed the UpdateAll eliminated the need for the extra code
Scenario: VB2010 express + Sql Server 2008 express. I have a master/detail form where I can modify a record. With VB 2010, I use the new Table Adapter Manager which handles all Updates/Deletes against the database inside a Transaction. Question is that before I update the modified record (only the master one), I need to insert it in another table (history table). My question is how I make both insert and update inside the same Transaction. By code? Using Stored Procedure?
i have a master detail form with databound datagridviews.my detail datagridview is bound to FKFieldSubFieldLookupTableBindingSource and it shows the linked sub-fields when the main field changes. This datagrid has only one column which is the sub-field names column. this column type is ComboBox.here are this combobox details
DataSource = subFieldLookupBindingSource DisplayMember = sub_field_name value Member = sub_field_id
No Problem until here.When i click on the Cell combobox I get the list of all the sub-fields. I don't want this. because once a sub-field has been associated with a Master field, it should not be available for other Master fields.What i did was, In the SubFieldLookup Dataset, i added a query to get all those sub-fields which haven't been associated yet.but this clears up the detail datagrid and shows blank comboboxes where it is supposed to have the sub-fields.
I simplly want the master-detail mechanism to work and when i want to add a new sub-field, and click the combobox in sub-fields datagrid, i want to have only those sub-fields which are marked False in database in the column 'alreadyAssociated'.
I want to send a PDF form from my program.Sending the form is not the problem.But i would like to fill in the Subject, and some detail information in the E-mail automatically.
I have a MDI Form that has a child form containing a text box. I want to be able to make a call to the TextBox's cut() method on the currentlly active child form. Here's what I have so far, but it is complaining about using ctrl.cut()
I have a form that is set up like a master/detail form - fields on top with a child grid below. The difference here is that the child grid is reflective of a recursive relationship. That is the ID of the master has a one-to-many relationship with another attribute called "parent." the child grid displays all the children for that parent. It works properly except when a new record is being added to the master.My issue is that when the user clicks on the Add New button, the child grid then displays all the available parent records in the system instead of an empty grid. Once the new master (parent) record is saved, the grid reverts to proper behavior.Thus, my question: How do I prevent the child grid from displaying all the parent records when a new master (parent) record is being added?
I have 3 classes: A form that has a button push that calls another class (Runit) to do work. The "Runit" class. It bulids a collection of process classes (see below) and launches them as threads A process class that increments a variable. This is used to build the object that is "collected" in the Runit class.
Here's the code for each. Note that I misnamed ProcessClass. It would be better named ThreadClass, as it contains the Sub that is to be the target of a threaded execution:
Public Class NT_Test
Public Const NUM_THREADS = 3 Public RC As New RunClass Public Processes As New Collection
[code]...
The way this code looks to me is that when I trace into bDone (it used to be a boolean), I should see "1" on each pass (NUM_THREADS = 3; the size of the collection). What I'm seeing that mystifies me is "3" in all 3 members of the collection. Because of the initial loop, I might expect 1, 2, 3 respectively if either the thread did not update or I was passing through the same block in as opposed to distinct members of a collection. I can upload the project if that would be helpful. I didn't do so only because I edited a bunch of commented code out of this version that I've used for other experiments.
In my program, I created a list of a class that contains 5 picture boxes, a button, a label, an identifier, and some other stuff. I've got roughly 65 of these in this list. I'd be stupid to hard code all that in. The identifier is a 2nd way of identifying which specific location I'm working on.
Anways, all this is created at compile time. Works perfectly fine.
I then manually start a background worker that pings a collection of components. Based off the success of those pings, the picture boxes are enabled or disabled. Basically a proactive way to see if a collection of devices over multiple locations are actually working.
It's the background worker that fails because of thread-safe calls.
Private Sub bgwStatus_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles bgwStatus.DoWork Dim status As Integer
Am new to VB, can anyone tell me very simple how to share the MAIN Bindingsource with an detail form where i want to edit 1 record from the main datasource? andreg
When I double click on a row on a datagrid, a form will appear like the above screenshot.
When I double click on the row which consist of Brian/Kendall, a form will appear and should show Brian in the First Name text box and Kendall should appear in the Last Name textbox.
I need to get a string from an items collection in a list box on one form to a list box on another form in VB 2008. Here is the code (I've tried a couple ways in the code to get the values over).
Public Class frmPrintBooks Private Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnClose.Click
I have a large form that is set up from master-detail datasets in Visual Studio 2008.I havene master table with a large amount of detail tables. Several of the detail tables also have detail tables linked.Now I need to add a master table that sits on top of my existing master table making it a detail table.
I'm doing an assignment with VS 10 that involves making a program for calculating orders but got stuck in trying to link the "invoice" listbox on the invoice sub form to the one in my main form. The list box on the main form is where the user adds, edits and deletes products. It's working perfectly fine it's array and select codes.The receipt form also has a list box, which should display all the products entered in the main form's listbox. My question is, what is wrong with my code? The text boxes seem to be working fine:
Public Class BillForm Private Sub BillForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load lstBikesBill.Items.Add(DavidBicycles.lstBikes)[code]....
When I enter some data into the main form's list box and then click on the bill, the other list box shows up as empty.
I have made several posts on here lately regarding master/detail or parent/child data setups but no one has been able to help. It seems like a subject people don't like to tackle BUT I really need help.
I'm having a real hard with the DataView.RowFilter functionality and it is driving me insane.
For the most part, I have the basic master/detail functionality working. When you select a record in the first grid, it shows the correct data in the second grid. When you enter a record in the first grid, you can enter related data in the second grid. I accomplish this by using a dataview and row filter bound to the 2nd grid. When you change the record in the first grid, the rowfilter for the 2nd grid is restated and reapplied.
The problem arises when I overwrite the primary field value in the first grid and the detail records become orphaned. You would think all I have to do is change the ID in the 2nd grid to match the new ID in the 1st grid but this is where I am having problems. I wrote a loop to change the ID of each record currently loaded in the 2nd grid to match the newly changed ID in the first grid. The code is here:
Code: Dim I As Integer
For I = AuthorizationGroupsDGV.Rows.Count - 2 To 0 Step -1 AuthorizationGroupsDGV.Rows(I).Cells(0).Value = StrEmployeeID Next
I have used this code before and it works great. It has to step backwards through the grid because when the ID's are changed, they no longer match the RowFilter criteria and they disappear from the grid. They still exist in the dataset. The problem is, while the code "works" the intended effect does not. Some of the records completely disappear from the dataset and do not reload when I restate the row filter against the new ID number.
There are a lot of master/detail databinding examples with detail form on the same window than the master, I can't find any example where detail is in a new window.
