How do you requery a listbox bound to a dataset after manually adding a row? // Setup binding lbCustomers.DataSource = this.dsCustomerOrders1.CustomerList; lbCustomers.DisplayMember = "FullID"; lbCustomers.ValueMember = "CustomerID"; // Add row to underlying dataset System.Data.DataRow new...more >>

Hi I have a form with one listbox and couple of textbox controls. I have a custom class 'Customer' and a corresponding collection class 'CustomerCollection'. I have set the 'CustomerCollection' class as the data source for the listbox. I have bound the textbox controls to the listbox (to ...more >>

I have a TextBox bound to a column of of a DataTable. When I scroll through the DataTable the TextBox updates just fine. When I refresh the data based on a new query that returns 0 rows, the TextBox still shows the value of the row from the previous DataTable. Refresh event handler looks lik...more >>

I am trying to add records to a table using a windows form created in vb with a dataset object. I have dragged and dropped the fields I want onto my form. A BindingNavigator is created and am trying to add a new record. I click the add button, fill out the necessary fields and attempt to updat...more >>

I have been experimenting with object databinding in .NET 2.0, using Mike Weinhardt's great MSDN columns as a guide: Part 1: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnforms/html/winforms11162004.asp Part 2: http://msdn.microsoft.com/library/default.asp?url=/library...more >>

I've created a User Control to display data from a Dataset, and was wondering if it were possible to bind a FlowLayoutPanel so that I can display an instance of my User Control for each record in a dataset? Is there another way that I could accomplish this task? I'd prefer to use the FlowL...more >>

I have a windows application I am creating. It is using a local MDF / SQL Express DB as it data source. It is all .NET 2.0 (VS2005). I am new to the windows side of things on this, and I have only done a few web site with it. I looked at the TableAdapter documentation in the help file, and...more >>

Which datagridview method updates the checkbox state? I have tried overriding MouseDown, MouseUp, MouseClick, and in each one the Displayed cell value remains the same before and after the base method is called... Or maybe there is a better way to get instant checkbox changed feedback? ins...more >>

Hi all, I have parent/child datagrid (showing transactions and transaction details when the (+) sign is clicked on the grid. There is a method to "expand" the row, and an event to fire when you click "back to parent record", but i see nothing (no property or event) in this stupid grid to...more >>

I have two datasource's bound to objects. I'm using one of the datasources (PermCampers) to fill a detail information that I drug to the winform. In that PermCampers is a property called WeekId that I have made into a combobox.before I drug that datasource to the form. Now on that weekid c...more >>

Hi, Can anyone help with the following problem, it is with BindingSource in .net 2.0? This is probably to do with the way that I am trying to set things up, but I have created a UserControl called SqlTable, which contains a panel for the name of the table, and a listbox for the fields i...more >>

I am building a custom data binding control that derives from BindingList<of T> and provides transparent persistence mechanism of the objects to the database like a datatable. To do this I override the appropriate events in my custom control class. e.g. adding object to the datagridview adds it...more >>

I've got a dataset and a windows form I've bound my controls too. I have two fields that are True/False in the SQL server and wanted to use checkboxes for those... Everything looks fine, you can navigate through existing records, etc, right up until you try to add a new record: this.BindingCo...more >>

How do I save the appearance of the toolbox for future projects? Is there anyway to save the appearance of the total workspace? MBS ...more >>

I'm uisng a custom class to fuel my datasouce. I've draged the datasource over in detail view and put in the Me.CampersBindingSource.DataSource = oCampers the data appears fine. now what I'm trying to figure out is how to wire the textbox in the binding navigor toolstrip so that when...more >>

Suppose: * I have a class Name with two properties: FirstName, LastName. Both string. * I have a form with one TabControl with 2 TabPages, with one TextBox on each TabPage. * I bind an instance of the Name class on the Form's Load event. For each Binding object (one for each TextBox), I ...more >>

Hi. I'm fairly new at C# and .NET Framework. I'd really appreciate your advice. I'm using 2.0. I would like to have many read-only controls on my form, each using a different portion of data from my data source. I have a Class (called MyClass) containing a Property named DisplayValue. ...more >>

I understand how to get the current row, position, etc from a DataView given that it may be bound to a WinForms control and using BindingManagerBase/CurrencyManager, but what if you have a Dataview class independant of any technological platform? I'd like to be able to get and set some kind o...more >>

2 questions 1.) When inserting a new datasource in VB 2005 the tables are listed in the Datesources window with an icon showing a circle with a line through it. Why doesn't VB assign a default data control type to each table. (Datagrid, Details, etc.) 2.) I create a simple database appli...more >>

Hi all!! I have a MS access database (Customers.mdb) and a table in it (TblCustomers). the table has these fields: Cust_ID, Cust_Name , Cust_City , Cust_State on my form i have an oleDBdataconnection (DC1) and an oledbdataadapter (DA1). now hoc can i programatically create a dataset (DS...more >>

I have DataGridView where I have DataColumn and it's Visible property is False but still it shows it in DataGridView? On some other form it works as supposed but on some forms it doesn't. Is this known bug in form designer generated code? Regards, Oka Morikawa D I G I N E ...more >>

I've been working with a custom data source and implementing IBindingList, ITypedList on the collection object; and for the item in the collection IEditableObject and IDataErrorInfo. In the UI for this the data source is presented in a grid, and other areas of the screen allow editing of the i...more >>

I have a datasource that is bound to a class i created. I changed the datasource so that it woudl be using the detail view, not the datagrid and drug it over.. below is what I'm using to bind the class to the bindingsource With oCampers ..LoadFromDB() oCampers = .Load("") 'load all ...more >>

Hallo, I realy need help! I just started programming with .Net Windows Forms, and i tried to bind a System.String [] to a multiline TextBox to display all elements of the array at once!! I always got the same result. The first element of the array gets displayed and the other not! Why ?? Is i...more >>

Hi, I am developing an application and need to make it so the application data is stored in some manner. I am thinking of an XML file as the data source. I would like to setup 2 way data binding & also make it so the xml file is encrypted. I'm using .NET 2.0. Thanks! Chad ...more >>

Hi, I am receiving data from an external source in form of events. The incoming events are very fast. Initially I was using windows datagrid control to display the data, but it seems to be very slow. Please tell me, how can I create my own custom lightweight grid to solve this issue or poin...more >>

I am writing a navigation control which is bound to a dataset using CurrencyManager. -- code snippet class MyControl : UserControl { CurrencyManager listManager; object dataSource; string dataMember; void BindDataSource() { if(dataMember != null) listManager = (CurrencyMan...more >>

I am Running .NET Framework 1.1.43322 SP1 I have a Windows Form with a tab control and several tab pages and a Save tool bar item. If the user tries to close the form without saving his changes to the database I want to prompt him “Do you want to Save?” All user-entered updates are en...more >>

I get the following error when I try to remove an item from a list control and the update the ds it is bound to. "Concurrency violation: the DeleteCommand affected 0 of the expected 1 records." Code being used. lstControl.RemoverCurrentItem(); lstControl.EndEdit; TableAdapter.Update()...more >>

I have textBoxColor bound to myBoundObject.Color, and it works for two scenarios: If I type in the box, the Color property gets set as soon as I tab out. If I set the Color property, the text gets put in the textbox. But the following code does not work: void UponClick() { textBoxColo...more >>

I'm writing a windows application that requires to display real-time data all the time. Can anyone give me some guidance? Thank you....more >>

Hi, I am working on a winform project to populate a few comboBoxes with Keys differ from the Values. In Framework 1.x, I can do ComboBox.Items.Add(new ListItem("Value","Key" )) But in the VS2005 of framework 2.0, the only close option is new ListViewItem("Value", "Key"). And when this ...more >>

If some would help - I'm trying to use a List<MyClass> collection as the datasource for a DataGridView in a Windows form, and I can't find good enough instructions. I'll be happy with either some 'how-to' steps, or a point at the right documentation. I've gotten as far as creating my class,...more >>

I do all of my databinding at run time. I've always used the CurrencyManager. Now I see a new object, the BindingSource which seems to have the same functionality. Can the BindingSource be used the same way the CurrencyManager is used at runtime or is it more for the Designer? Is the Bin...more >>

Hi, I created a form with I want to update the content of a DB table. I placed some databinded editor objects: text boxes, combo boxes, etc on it: they show one database record. I overwrite the value in the edit box, and I want to save the modifyed data back to the DB. However I don't know...more >>

I have bound a Visual Basic.net Combobox to a Datatable like this: Me.ComboBox1.DataBindings.Add(New Binding("SelectedItem", Me.VehicleDataSet1, "Vehicle.Name")) Me.ComboBox1.DataBindings.Add(New Binding("SelectedValue", Me.VehicleDataSet1, "Vehicle.VehicleID")) Me.ComboBox1.DataSource = Me...more >>

I am trying to populate a drop down from an array. Here is my class: namespace InstallChecklist { interface IListSource {} class checklistLists : IListSource { public class listItems { private int _listValue; private string _listText;...more >>

Where's the best single source for a description of binding, from BindingContext through CurrencyManager. The help files are useful but lack a lot of the 'need to know' details. There has to be a good chapter or white paper somewhere. I need to know things like: If you NameOfControl.DataBin...more >>