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PODatagridview bound to object - Making the new rows appear blank
 

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  1. PODatagridview bound to object - Making the new rows appear blank
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    <p>I have a Datagridview that changes its content according to a selection the user makes in a listBox. The DGV consits of 2 comboboxes (Country, Product) and 1 textbox (Quantity).</p> <p>I've created a class combined of 3 integers. This class is used as a type of list, which is the datasource for the DGV. There is also another list containing the prior list, so I have a list of datasources.</p> <p>The DGV's datasource is a BindingSource that changes whenever the SelectedIndex of the listBox is fired.</p> <p>My problem occurs whenever a new row is added to the DGV: I use the BindingSource.AddNew which calls the constructor of the class, but <strong>it must assign values to each item in the class</strong>. That way, whenever I click any cell in the DGV I don't get a blank row. Moreover, when the BS changes and then returned, another row is added.</p> <p>What I want to get is a blank row - empty comboboxes and textbox.</p> <p>Thanks for your help!</p> <p>The class:</p> <pre><code> Public Class PoList Private _CountryID As Integer Private _ProductID As Integer Private _Quantity As Integer Public Sub New(ByVal CountryID As Integer, ByVal ProductID As Integer, ByVal Quantity As Integer) _CountryID = CountryID _ProductID = ProductID _Quantity = Quantity End Sub Private Sub New() _CountryID = 1 _ProductID = 2 _Quantity = Nothing End Sub Public Property CountryID() As Integer Get Return _CountryID End Get Set(ByVal value As Integer) _CountryID = value End Set End Property Public Property ProductID() As Integer Get Return _ProductID End Get Set(ByVal value As Integer) _ProductID = value End Set End Property Public Property Quantity() As Integer Get Return _Quantity End Get Set(ByVal value As Integer) _Quantity = value End Set End Property Public Shared Function CreateNewPoList() As PoList Return New PoList End Function End Class Private Sub List_AddRow(ByVal sender As Object, ByVal e As AddingNewEventArgs) Handles AllListBindingSource.AddingNew e.NewObject = PoList.CreateNewPoList End Sub </code></pre> <p>Creating a new inner list:</p> <pre><code>AllList.Add(New List(Of PoList)) AllListBindingSource.AddNew() AllListBindingSource.DataSource = AllList(TableCounter) AddPoDetails.DataSource = AllListBindingSource </code></pre> <p>SelectedIndexChanged event:</p> <pre><code>AllListBindingSource.DataSource = AllList(AddPoList.SelectedIndex) AddPoDetails.DataSource = Nothing AddPoDetails.DataSource = AllListBindingSource </code></pre>
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    1. USGil
    1. USGil
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    1. CODo you have some code?
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      1. PODatagridview bound to object - Making the new rows appear blank
      1. USCarlos Landeras
    2. COEdit my post. Hope I got all the relevant lines
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      1. PODatagridview bound to object - Making the new rows appear blank
      1. USGil
    3. COCan you supply a snippet of how you create the DGV combobox columns and how the item table looks?
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      1. PODatagridview bound to object - Making the new rows appear blank
      1. USWozzeC
 

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