1) Do you typically allow Deletions, Additions, and Edits in a DataGridView?
2) Have you found any simple way to use combos in a DataGridView? (See edit below.)
3) What type of binding do you typically use on a DataGridView? Do you manually code it? Bind it to an custom BindingSource object?
I'm accustomed to programming in MS Access and I'm now working on learning VB.NET. In Access I typically use updateable DataSheet view bound forms but this doesn't allow me to separate my business logic and create a Data Access Layer. Now I'm trying to figure out how to have an updateable DataGridView in .NET together with separate layers for Business Logic and Data Access. So far I haven't really been able to make sense out the many things I'm reading about this.
I need my DataGridViews to be easily sortable, filterable, and allow up to 10,000 records to be displayed at one time. I've achieved this using ADO.Net with standard DataTables (all written in code) but all my business logic and Data Access is in the code behind my form.
Edit:I guess I was under the impression that ComboBoxes are really difficult to use in DataGridViews so that's why I had posted question #2 above. I think I need to research this a little more as it's probably not as difficult as I thought it was but it doesn't appear to be anywhere as simple as a combo in MS Access. However, I realize that MS Access has many other limitations that VB.NET does not have.
I think I already know the answer to this, but I figured it would not hurt to ask.
Is there any possible way to nest Databound DataGridViews in .NET? What I would like to have happen is for each row in the DataGridView to have a button to expand, which would then give me a DataGridView underneath that. I would like this nested DataGridView to also be able to do this, so I could go n levels deep with them.
Is this possible with the .NET Winforms standard DataGridView? (Or another standard .NET control?) I have seen people reference some third party controls, however they are really expensive, and I don't really want to go that route.
I wrote a program using VB.NET. When I run the executable, it displays a DataGridView that may (or may not) have rows in it. The user can enter data, or hit an Update button to fetch data from a database. (The grid is NOT being used as a DataSource.)The user can also set the font with another button: DataGridView1.font = "..."
If the grid DOES have rows in it, everything works as expected and the font is used in the grid.If the grid does NOT have rows in it, the font does NOT change. Even after the user hits Update, or types in data.He has to entirely exit the program, and rerun it to see the font actually change.
Question: How do I set the font on the grid, regardless of whether it:
Has rows. Doesn't have rows. Will have rows later.
I would think DataGridView1.font would ALWAYS change the font. No?
I have an idea, but i am not sure how to implement it with code.I have an application where a user can view current bookings for rooms.I have two datagridview controls, the first one shows the rooms and the second shows all my current bookings.What I want to be able to do or more the user, is click on a room and the current bookings for that room (datagridview1) to be shown in (datagridview2).What I think I need to do is apply a filter and a sort in a sub routine, then link my tables with a binding source.
I have two relayed tables (teams and players) and two datagridviews. In the datagridview1 i have a combobox with datasource <teams>.In datagridview2 i have a combobox with datasource <players>. In this combo i can see all players. I want to filter and see only the players related to the team of the combo in the datagridview1.
I have 2 forms (form1 and form2). I'm passing 2 numbers from form2 to form1 (see image/attachment). I want to make sure that 1 of those 2 numbers (passed from form2) aren't the same as any number on form1 in column2. For example, if I were to pass the numbers "2, and 3", the program should give an error saying, there is already 3 in column2. It doesn't matter if the first number (in column1) is the same, but the second number should NOT be a duplicate of any number in column2.
I am novice at best with VB. I have a dataset built from a complex query. Well I have a lot more items in the dataset than I wish to show in a datagridview. Some items will be used for other purposes at the time, filling txt boxes, dropdowns, etc...all independent of the dgv. I am lost at how to fill just a 3 or 4 of the items rather than just filling the entire thing. So, instead of just filling the entire ds into the grid, how would I fill in selected columns into the datagrid that has specifically named columns at runtime?
In my project,, I have three forms. In my main form, I have a DataTable filled with some data from a MySQL-server.In the two other forms, I have a DataGridView which is bound to a BindingSource, which again is bound to the same DataTable in the main form. So It looks something like this:
I have a datagridview with two columns; one named Names the other named Scores. This is my code so far Dim hScore As String() = New String() {strName, lblPercent.Text}
[Code]....
What I want it to do is sort the scores by greatest value to least value, but the problem I'm having is that the scores are stored as strings so they are being read and sorted from left to right. My question is, how do I store the scores in a numeric array and place them in the same row as the name, but in the second column? The names and scores only need to be stored as long as the program is running so I don't want to add anything to the registry or create new files to store them.
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.
VB 2010 form has 1 panel, 1 DGV in the panel, 1 TabControl with 3 tabs in the panel each tab has a DGV all 4 bound to the same DataSet through code.
I have a form that has multiple Datagridviews on it, 1 in the main portion of a panel and the other 3 in a tabcontrol. If I click on cell 0,4 of DGV1 cell 0,4 of DGV2 is also "hilighted" and the same goes in the reverse order. If I click on cell 1,4 in DGV 1, cell 0,1 is hilighted in DGV2 (basically it stays with the last selected col and what ever row for that DGV).
This isn't the functionality I'm really looking for here, when I single click or change cells on any of the DGV's I don't want any of the others doing anything.
As you can see there are 2 cells selected this was created by a single click in the 4th cell of Param0
I have a problem with my DataGridViews, actually i have a form with a TabControl with 8 tabs, each tab have a DataGridView control. I'm populating them when the form load, the problem is that i got kind of a limit here, only 3 DataGridViews are getting populated, not 3 specific ones but any 3 i put first on my code. I'm populating them manually, doing a mysql query, filling a DataTable and then making the data source equal to the DataTable.
I have a Form with a TabControl with 8 tabs, each tab have a Datagridview that needs to be populated each one from a different table of my database. I'd like to know if i need to make all the 8 connections and queries or i can apply the DRY principle and how i can do it.[code]...
I use Visual Basis 2008 With MySQL. I Have one from with 6 (six) Datagridviews controls I Have the following problem: If i use Form1.Show method than the form1 is only show if data connections are made and all the datagridviews are filled with data What i want is to first show Form1 with alle the empty Datagridviews (6)controls and then After that i want that the program make the data connections and fill DataGridView with data. form1.show ' call form other Form
Private Sub Form1_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load 'in this Load event i make all the data connections en fill the datagridviews
i have a datagridview on my winform that is bound on the click of a node in a tree this is the binding code...
Dim myDocList As IList(Of DocumentTemplate) myDocList = CorrespondenceHelper.GetDocumentTemplateByCorrespondenceId(Convert.ToInt32(e.Node.Name.ToString())) 'add new blank row at bottom myDocList.Add(New DocumentTemplate())
[code].....
i added a blank row in because if i bound without it then i was unable to add new row.
AllowUserToAddRows = True is set also
but when i populate the blank row and tab of it i would like another blank row to be created below but unsure where/how i go about this?basically im aiming for teh user to be able to edit or add numerous records to the datagridview then commit all changes on one click (Save) at the end.
I discovered a problem in C# (boo hiss!!!) but it applies to VB.NET as well.I decided to build a little app to load info from some audio files using Taglib-sharp (nice little thing it is!) and create a Winamp playlist from the loaded files. (I know it's lame, don't laugh! I just wanted to learn some C#!)I have a form with 2 DataGridViews. I load the first dgv with some tag info from the selected files. I then move those files from 1 grid to the other, shuffling their positions along the way.The annoyance I found is during form design. If I try and name a column in the second DGV the same as in the first (eg. "Filename") I get an error that says the name is already in use by another component.To me this is not right. The column is part of a separate object, shouldn't this mean that "Filename" in object1 isn't the same as "Filename" in object2? I even have to refer to the specific object to get the column's value in a row. [code] to access the column's value in the first row of dgvMine or dgvOther, then why does the darn designer care if "Filename" exists in dgvMine and also in dgvOther? Shouldn't they be separate declarations "within" each of dgvMine and dgvOther?
I have a strange problem; on my form there is a TabControl, and every tab contains a DataGridView.I set all DataGridViews Autosize column property to DataGridViewAutoSizeColumnsMode.Fill and then I set for every column the width with FillWeight, using the same set of values for every DataGridView.Although all these DataGridViews should look the same, the one on the first TAB looks different, it looks like I used different FillWeight values.All others DataGridViews on subsequent tabs looks the same, only the one on the first tab looks different..
I'm trying to generate my own dataset and create parent/child relation on the fly so that the subsequent datagridviews (dgv) that will be displaying the information will filter each child dgv by the record chosen in the parent dgv (I hope this makes sense).
So far I am able to display info in each dgv, but every record from each corresponding table is displayed in each dgv- no filtering is occuring. I think the problem might be in how I'm creating the relation and/or how I'm linking it to the dgv. Here's the code I have on the UI:
I wrote a function that allows me to retrieve data from a single SQL table and place it into 3 datagridviews. The problem i am having is as follows:* Whenever a user types something in anyone of the datagridviews that information is recorded in all three of the datagridviews.I am seeking partnership to address my issue. I have enclosed my function that is called to populate the 3 datagridviews
Function SetupColumns(ByVal str As String) As BindingSource Data_set.Clear() Try
I have an MDI application that shows MDI forms with a single DataGridView on each form. The grid is bound to a List(Of Item), where Item is some class. Now I need to be able to drag (possibly multiple) items from one grid (in one form) to another grid (in another form).
Unfortunately, I know nothing about DataGridViews and even less about drag and drop, so this is turning into a real pain for me...I have been looking at examples for ages, but none of them work for me. Most of them don't deal with databound items, others don't seem to work at all, and yet others can only deal with a single row at a time (pretty useless for me).
This must be something that people need a lot, so I can't understand why the examples are so 'bad'.
I am developing a program in which I add the payments for my bills on a monthly basis. I have the design layout and the logic thinking, but having a little difficulty getting the database codes in place. I have 2 comboboxes that act as drop down boxes (1 lists all 12 months and the other lists the years, only 2009 for now for testing).
My access database has 3 columns (name, dates, amount). The names are pre-populated and the only columns displayed in the datagridview are name and amount.
When I choose a month and year, the datagridview should populate with the amounts entered from that month. I am having trouble debugging which lines of code are not working because there are no errors showing, just seems that it stops running at some point.
Dim Connection As OleDb.OleDbConnection = New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Administrator\My Documents\BillTracker.accdb;Jet OLEDB:Database Password=password")
So im using the inno installer to set up my project and i found a nice script that will check and download 3.5 framework, but can't get it to work for 4.0 so my question is would i be able to compile my project in 3.5 and everything still work correctly?
My program just uses basic math functions and display the data in datagridviews. It uses webbrowser and other toolbox options. It doesn't use the registry and only creates one txt file.
This is for a winform vb.net 2008 app. I'm bringing data back from a database and based on some static conditions... i want to change the color of the background and the text. There is no rowdatabound event in winform...
I have a dgv with a column type = DataGridViewAutoFilterCheckBoxColumn. I want to know if there's a way to I can get that entire column to become disabled (or Enabled = False) so it won't let the user click on the checkboxes. I tried looking in the "Bound Column Properties" but there isn't an option to disable the entire column.
I have a product table with ProductId,ProductName,ProductCode as fields. I've populated a combobox with productnames. Next I have two other tables called Result_Header and Result_Detail. The Result_Header table has ProductId as a foreign key and BatchNo,TestDate etc. The Result_Detail table has ResultId as a foreign key which is the ResultHeaders Primary Key and other fields such as Result,SpecHi etc. What I need is when I select a Product from my combobox my two datagridviews must be populated via the Result_header and Result_detail tables respectively.
