.net - Adding A Record And Updating UI - MVVM Pattern - DataGrid As Master, Other Controls As Detail?
Jan 4, 2011
I have a Master List in the DataGrid that displays all the "Monitors" - think of them as Audits (for context). Basically when a user clicks on a row in the DataGrid the TextBoxes, ComboBoxes, CheckBoxes and DatePickers all show the values and the user can edit them there and that all reflects in the DataGrid just fine.How do i go about using the same TextBoxes, ComboBoxes, CheckBoxes and DatePickers to add a new record?
<Monitor.VB>
Public Class Monitor
Public Property MID As Integer
Public Property FileNumber As String
[code]....
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Jun 16, 2010
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?
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Nov 1, 2011
I am attempting to move from the VBA platform to the VB.Net platform. I have been attempting to learn master/detail structure and have found plenty of examples and help using multiple data grids to display the data in my database.
However I would like to use the detail view from the data set combined with data grids for smaller tables. So part of the form has text box and labels to show the data and the data grids are used to show the detail data.
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Nov 15, 2011
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
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Dec 16, 2010
I'm trying to add a new record in the DataSet in the master table. I'm not including a value in the unique ID field because it is added automatically by the server. At the moment I add second new row it throw me an error �Column 'ContactID' is constrained to be unique. Value '' is already present.� Do I need to set value of id column manually? How?
da.Fill(ds, "tblContactsProfil")
daAddress.Fill(ds, "tblContactsProfilAddress")
Dim relation As New DataRelation("ContactsDetail", _
ds.Tables("tblContactsProfil").Columns("ContactID"), _
[code]...
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Nov 12, 2011
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).
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Jul 13, 2010
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.
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Aug 2, 2009
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.
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Sep 29, 2009
I have a dataset containing 2 tables,Customers and Contacts. Just showing the master-detail is not a problem. Problem occurs when I try to search the master table to bring in the detail table. Searching the master table shows only the master record, but not the related detail records. Adding a 'findby' query on the detail table only shows the records.url.. Normally when the master table is filled, the detail record shows in a form.
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Jan 4, 2011
How do i fill my ObservableCollection(of Monitors) with data so that I can save it in an MVVM friendly manner. I normally use a FileNumber to load a DataSet using a DataAdapter and pass the monitors table via monitorDT - should I be loading it differently? How do I save the changes? Right now I have the following for loading data:
[Code]...
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Jan 13, 2011
How do i fill my ObservableCollection(of Monitors) with data so that I can save it in an MVVM friendly manner. I normally use a FileNumber to load a DataSet using a DataAdapter and pass the monitors table via monitorDT - should I be loading it differently? How do I save the changes?Right now I have the following for loading data:
Public Class Monitors
Inherits ObservableCollection(Of Monitor)
Public Shared Function LoadMonitors(ByVal monitorDT As DataTable) As Monitors
[code]....
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Mar 14, 2012
This is more a conceptual question. Here is my current predicament; I am writing a vb.net WPF application and using the MVVM pattern (love it! maintainability is just amazingly awesome). Currently all the code is written by hand and there is no use of NHibernate or Entity Framework as the backend is an access database (due to policy I cannot use NH and EF doesn't support JET Databases, we may switch to MSSQL at some point but that may be a while from now).[code]...
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Apr 28, 2009
I am trying to update a table based on row selected in a grid (C1TrueDBGrid1.Columns(1).Value), but I am getting the following error:
Update unable to find TableMapping['Table'] or Data Table 'Table'
Code:
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=/DataDirectory/AOPT2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate" Dim objConnection As New
[Code]....
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Jul 25, 2011
This VB.NET rookie is asking for the support of those with expertise. BACKGROUND: Form1 has a Datagrid, Dataset1 create by drag DB into datagrid. Form2 presents the record selected from the datagrid. Within the LOAD_FORM I search the DB with the Key and place data in Dataset2 (DS created manually)
CHALELNGE Record updated in Form2 is saved in DB fine and when Form2 is closed, record updated does not appear in Form1. I�ve tried the following but no sucess In form1 event Ive got the code to load data into the DS Me.TUSERSTableAdapter.Fill(Me.PTDataSet.TUSERS) FINALLY: What should I do to see the datagrid updated?
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Apr 22, 2009
OK - I have worded this search 40 different ways and I seem to be lost here. Every example I find seems so happy that you can easily drag and drop a datagrid and let the user fill it in -- then they stop! I know how to do everything I am asking through LINQ. That obviously won't translate here. I really should have learned ADO.NET first, then LINQ, but NOoooo... I need to know how to do the following in .NETCF (Windows Mobile 5) using a SQL CE database on the device.
Add a new record and populate some or all of the fields with data I supply. I don't need to add a record to a datagrid - sometimes the user will not even see the record. How do I add a new record -- put data into it and save it? For example: Create a new delivery record, say, and have the program store the date in one field and a number in another field. Search for a record, then update data in it. Again, using LINQ I can do this easily -- I cannot for the life of me find any examples of doing it without it.
I can find lots of examples of populating a grid of databound fields, letting the user make changes then saving it out. I don't need to do that. Say I need to search for the one record that meets a criteria (customerID=10 and orderID=1234), then when (if) that record is found, update a field in it.
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Jul 7, 2010
I have a database with 2 tables master and detail, the detail has a picture field and the PK and FK. I use this code to navigate through the records, is there any simpliest way?
me.bindingcontext(dataset11,"Table1").position += 1
me.bindingcontext(dataset11,"scan").position = textbox1.text
where scan the detail and textbox1.text the PK of the master, it is a little slow.
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Jul 1, 2009
I am working on a project where I need display a list of items in a combobox and then display the details for each item in some textboxes.For example.I have a medications table,
ID (uniqueid), Name (varchar), Prescribed(bit), Usage(varchar), StartedTaking(datetime), HowTaken(varchar)
In the combobox I want to display the Name, and use the ID as the value. Then when an item is selected it will show the Prescribed, StartedTaking, HowTaken and Usage values in the textboxes.Heres the code i started writing..
Imports System
Imports System.Drawing
Imports System.Collections
[code]....
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Mar 31, 2010
I have created data sources from my objects in my project, some of which have other objects as members. When I want to bind a some objects to a data grid I would like to display some of the values from the member objects in the data grid as well but the examples I have come across seem to use an entire other datagrid or controls to display these member object values.
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Jan 14, 2009
I have a table in which I populate a datagridview from. Now, I want to display certain info like Batchnumber in the first datagridview. And then in the second datagridview I want to display different data from the same table. Is it possible to have a master/detail scenario in this situation
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Apr 29, 2009
I have VB2005 Professional Edition.I have Two tables in my SQL2000 database.
1) Products Table contains fields --- Product ID, Product Code & Product Name
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.
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May 28, 2009
In my app I have a main form listing basic customer info in a datagridview. When the user single-clicks a customer, I want all the customers info to appear on the right side of the main form for viewing/editing/deleting, etc. Also, if the user double-clicks a customer I want a new form to appear (not an MDI child, but an external form) to appear with the same info for viewing/editing/deleting, etc. (Kind of like MS Outlook where you can open an item in the main Outlook window or externally).Since the external form and the right side of the main form need to show the same info and have the same functionality, I created a User Control to house all the customers detail controls and the ability to edit or delete.
Questions: Is using a User Control the best way to go?
The customer data on the main form is brought in via dataset, tableadapter and bindingsource. When a user single or double clicks a customer, that customers ID needs to get to the details User Control, regardless of whether it's in the main form or external form. What's the best way to get that customer ID to the User Control? Or should the main form "pass" the data binding source to the User Control?Once the customer ID has been received in the User Control, what's the best way to show that customer's details and prepare it for editing?
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Mar 17, 2012
I have a SQL db with an order master and order details table. For simplicity here is the basic schema:
Header:
id int
Customer nvarchar(50)
[code].....
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Jul 27, 2010
I'm looking for such control in order to represent a hierarchical list that I can sort separately each set of master (parents) and his details.url...I think that such a control does not provided in .NET..Do you know for a good 3rd-party for such purpose?
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Jan 5, 2009
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.
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Sep 15, 2009
Is it feasible to do master detail in textbox control? If I do it with datagridview control, I have no problem. However, when I tried to use textbox control, I had running error. I have googled it for a month and don't see anybody dealing with this questions so hope somebody can give me a definite answer. Maybe it's not possible to use textbox control at all.
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Jul 20, 2010
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
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May 17, 2010
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.
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Jul 26, 2010
I have a data structure that I want to represent in a master-detail (hierarchical) grid. Is there any such control in .NET or I have to purchase a 3rd-party ?
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Jun 16, 2012
I have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
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May 17, 2012
I have an inventory system I am making for my business. I have a form that has a listbox control that lists all the orders that have been submitted. I also have a datagrid that lists the items in the order based on what is clicked in the listbox.
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