Andrus,
Have you found an answer to your question? I've played with this some and found that if you create a Collection and add your Array to the Collection and bind to the Collection, it seems to work just fine.
Is that a workable solution for you or did you come up with something else?
~~Bonnie
>I need to add row in DatagridView based on array of business entities.
>Error "Collection is read only" occurs.
>
>I'm using NHibernate.
>NHiberante returns array of business objects.
>
>So my source type is System.Array and I cannot change it.
>
>Joe Stegman "DataBinding FAQ - Updated.doc" describes that BindingList
>AddingNew event should be used in this case.
>Also there is CoreAddNew method which is not documented in VCS 2005 Express
>documentation.
>
>I expect that BindingList or some of its implementation can maintain
>separate list of added objects by implementing custom Add() method.
>
>How to fix ?
>
>Andrus.
>
>Using .NET 2.
>
>Code to reproduce:
>
>using System.Windows.Forms;
>using System.Collections.Generic;
>using System.ComponentModel;
>
>class TestApplication {
> static void Main() { Application.Run(new TestForm()); }
>}
>
>class TestForm : Form {
>
> DataGridView DataGridView = new DataGridView();
>
> public TestForm() {
> Controls.Add(DataGridView);
>
> BindingSource BindingSource = new BindingSource();
> IList list = new Customer[0];
> BindingList bindingList = new BindingList(list);
> BindingSource.DataSource = bindingList;
>
> BindingSource.AddingNew += delegate(object sender, AddingNewEventArgs e) {
> e.NewObject = new Customer();
> };
>
> DataGridView.DataSource = BindingSource;
> }
>}
>
>class Customer {
> string name;
> public string Name {
> get { return name; }
> set { name = value; }
> }
>}
>
>Observed:
>
>System.NotSupportedException was unhandled
> Message="Collection is read-only."
> Source="mscorlib"
> StackTrace:
> at System.ThrowHelper.ThrowNotSupportedException(ExceptionResource resource)
> at System.Collections.ObjectModel.Collection`1.System.Collections.IList.Add(Object value)
> at System.Windows.Forms.BindingSource.Add(Object value)
> at System.Windows.Forms.BindingSource.AddNew()
> at System.Windows.Forms.CurrencyManager.AddNew()
> at System.Windows.Forms.DataGridView.DataGridViewDataConnection.AddNew()
> at System.Windows.Forms.DataGridView.DataGridViewDataConnection.OnNewRowNeeded()
> at System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCell& dataGridViewCell, Int32 columnIndex, Int32 rowIndex, Boolean canCreateNewRow, Boolean validationFailureOccurred)
> at System.Windows.Forms.DataGridView.SetCurrentCellAddressCore(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick)
> at System.Windows.Forms.DataGridView.SetAndSelectCurrentCellAddress(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick, Boolean clearSelection, Boolean forceCurrentCellSelection)
> at System.Windows.Forms.DataGridView.MakeFirstDisplayedCellCurrentCell(Boolean includeNewRow)
> at System.Windows.Forms.DataGridView.OnEnter(EventArgs e)
> at System.Windows.Forms.Control.NotifyEnter()
> at System.Windows.Forms.ContainerControl.UpdateFocusedControl()
> at System.Windows.Forms.ContainerControl.AssignActiveControlInternal(Control value)
> at System.Windows.Forms.ContainerControl.ActivateControlInternal(Control control, Boolean originator)
> at System.Windows.Forms.ContainerControl.SetActiveControlInternal(Control value)
> at System.Windows.Forms.ContainerControl.SetActiveControl(Control ctl)
> at System.Windows.Forms.ContainerControl.set_ActiveControl(Control value)
> at System.Windows.Forms.Control.Select(Boolean directed, Boolean forward)
> at System.Windows.Forms.Control.SelectNextControl(Control ctl, Boolean forward, Boolean tabStopOnly, Boolean nested, Boolean wrap)
> at System.Windows.Forms.Control.SelectNextControlInternal(Control ctl, Boolean forward, Boolean tabStopOnly, Boolean nested, Boolean wrap)
> at System.Windows.Forms.Form.set_Active(Boolean value)
> at System.Windows.Forms.Form.WmActivate(Message& m)
> at System.Windows.Forms.Form.WndProc(Message& m)
> at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
> at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
> at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
> at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
> at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
> at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
> at System.Windows.Forms.Control.set_Visible(Boolean value)
> at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
> at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
> at System.Windows.Forms.Application.Run(Form mainForm)
> at TestApplication.Main() in C:\test\test\Program.cs:line 20
> at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
> at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
> at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
> at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
> at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
> at System.Threading.ThreadHelper.ThreadStart()
