URGENTE AYUDA EN update y delete

[mjesus20]

y en delete o eliminar me sucede lo mismo aqui les va el codigo

Sub datagrid_delete(ByVal sender As Object, ByVal e As DataGridCommandEventArgs)
If Not isediting Then
Dim dbConnection As System.Data.IDbConnection = New System.Data.SqlClient.SqlConnection(connectionStri ng)
Dim dbCommand As System.Data.IDbCommand = New System.Data.SqlClient.SqlCommand("DELETE FROM [Inventario] WHERE ([Inventario].[IDDeInventario] = @IDDeInventario)")
dbConnection.Open()
dbCommand.ExecuteNonQuery()
dbConnection.Close()
DataGrid1.CurrentPageIndex = 0
DataGrid1.EditItemIndex = -1
bindgrid()
End If
End Sub