Disposed object

[Tracey]

HI , I posted the problem in this newsgroup before. And I
couldn't solve it completely.

My startup form say Form1 has a datagrid say datagrid1,
when I click a grid item in datagrid1, I wanna show
form2. In my code, I achieved that with:

Public class Form1
Inherits System.Windows.Forms.Form
DIm frm2 as Form2
...
Private sub Datagrid1_currentCellChanged(ByVal sender
As Object, ByVal e As EventArgs)
Dim bm As BindingManagerBase =
DataGridBTerm.BindingContext(DataGridBTerm.DataSou rce,
DataGridBTerm.DataMember)
Dim datarw As DataRow = CType(bm.Current,
DataRowView).Row
//click an item
If sender.currentcell.columnnumber = 0 Then
Me.close()
Dim frm2 as new form2()
frm2.show()
End sub
....
End Class

My problem is when I click the item in form1,form2
showed up but with an error massage window says:
Cannot access disposed object named "DataGridTextBox"
Object name: "DataGridTextBox"
Here is the debug information:
************** Exception Text **************
System.ObjectDisposedException: Cannot access a disposed
object named "DataGridTextBox".
Object name: "DataGridTextBox".
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.TextBoxBase.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.TextBox.GetLength()
at System.Windows.Forms.TextBoxBase.set_SelectionStar t
(Int32 value)
at System.Windows.Forms.TextBox.SelectInternal(Int32
start, Int32 length)
at System.Windows.Forms.TextBoxBase.SelectAll()
at System.Windows.Forms.DataGridTextBoxColumn.Edit
(CurrencyManager source, Int32 rowNum, Rectangle bounds,
Boolean readOnly, String instantText, Boolean
cellIsVisible)
at System.Windows.Forms.DataGrid.Edit(String
instantText)
at System.Windows.Forms.DataGrid.Edit()
at System.Windows.Forms.DataGrid.set_CurrentCell
(DataGridCell value)
at System.Windows.Forms.DataGrid.OnMouseDown
(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseDown(Message&
m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage
(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc
(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
Any help will be appreciated.
Thanks

[Tracey]

I'm sorry for the typo I made in above post.
(In class Form1)
Dim frm2 as new form2

should be changed to be

frm2 = new Form2

-----Original Message-----
HI , I posted the problem in this newsgroup before. And Icouldn't solve it completely.

My startup form say Form1 has a datagrid say datagrid1,
when I click a grid item in datagrid1, I wanna show
form2. In my code, I achieved that with:

Public class Form1
Inherits System.Windows.Forms.Form
DIm frm2 as Form2
...
Private sub Datagrid1_currentCellChanged(ByVal sender
As Object, ByVal e As EventArgs)
Dim bm As BindingManagerBase =
DataGridBTerm.BindingContext(DataGridBTerm.DataSo urce,
DataGridBTerm.DataMember)
Dim datarw As DataRow = CType(bm.Current,
DataRowView).Row
//click an item
If sender.currentcell.columnnumber = 0 Then
Me.close()
Dim frm2 as new form2() (I'm sorry, it should be
frm2 = new Form2
)

frm2.show()
End sub
....
End Class

My problem is when I click the item in form1,form2
showed up but with an error massage window says:
Cannot access disposed object named "DataGridTextBox"
Object name: "DataGridTextBox"
Here is the debug information:
************** Exception Text **************
System.ObjectDisposedException: Cannot access a disposed
object named "DataGridTextBox".
Object name: "DataGridTextBox".
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.TextBoxBase.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.TextBox.GetLength()
at System.Windows.Forms.TextBoxBase.set_SelectionStar t
(Int32 value)
at System.Windows.Forms.TextBox.SelectInternal(Int32
start, Int32 length)
at System.Windows.Forms.TextBoxBase.SelectAll()
at System.Windows.Forms.DataGridTextBoxColumn.Edit
(CurrencyManager source, Int32 rowNum, Rectangle bounds,
Boolean readOnly, String instantText, Boolean
cellIsVisible)
at System.Windows.Forms.DataGrid.Edit(String
instantText)
at System.Windows.Forms.DataGrid.Edit()
at System.Windows.Forms.DataGrid.set_CurrentCell
(DataGridCell value)
at System.Windows.Forms.DataGrid.OnMouseDown
(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseDown(Message&
m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage
(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc
(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
Any help will be appreciated.
Thanks
.