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POOldValues collection in event "ItemUpdating" of DetailsView is always empty
 

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  1. POOldValues collection in event "ItemUpdating" of DetailsView is always empty
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    <p>I´m using a DetailsView but when updating, I cannot get the OldValues because the DetailsViewUpdateEventArgs.OldValues of ItemUpdating event is always empty. The NewValues has the values ok.</p> <p>Note: I´m not using a datasource component in my application (SqlDataSource, ObjectDataSource, EntityDataSource, etc.). In this case should I do something manually?</p> <p>Any ideas will be welcome!</p> <p>Thanks!</p> <h1>Complementing the information:</h1> <p>I´m using ASP.NET 4.0 (WebForms)</p> <p>A snippet of code that I believe to be relevant below:</p> <pre><code>&lt;asp:DetailsView ID="customerDetails" runat="server" AutoGenerateRows="False" EmptyDataText="No data..." meta:resourcekey="customerDetails" onitemdeleting="customerDetails_ItemDeleting" oniteminserting="customerDetails_ItemInserting" onitemupdating="customerDetails_ItemUpdating" onmodechanging="customerDetails_ModeChanging" CssClass="customerDetails" DataKeyNames="CustomerID"&gt; &lt;FooterTemplate&gt; &lt;asp:LinkButton ID="lnkNew" Text="New" ToolTip="New Customer" CommandName="New" meta:resourcekey="lnkNew" runat="server" /&gt; &lt;/FooterTemplate&gt; &lt;EmptyDataTemplate&gt; &lt;p&gt;&lt;asp:Label ID="lblNoDataHasBeenFound" Text="No data has been found." meta:resourcekey="lblNoDataHasBeenFound" runat="server" /&gt;&lt;/p&gt; &lt;asp:LinkButton ID="lnkNew" Text="New" ToolTip="New Customer" CommandName="New" meta:resourcekey="lnkNew" runat="server" /&gt; &lt;/EmptyDataTemplate&gt; &lt;Fields&gt; &lt;%--CustomerID--%&gt; &lt;asp:TemplateField HeaderStyle-CssClass="detailsHeader" ItemStyle-CssClass="detailsField"&gt; &lt;HeaderTemplate&gt; &lt;asp:Label ID="ltrCustomerIdLabel" meta:resourcekey="ltrCustomerId" Text="CustomerID:" runat="server" /&gt; &lt;/HeaderTemplate&gt; &lt;ItemTemplate&gt; &lt;asp:Label ID="lblCustomerId" Text='&lt;%# Eval("CustomerID") %&gt;' runat="server" /&gt; &lt;/ItemTemplate&gt; &lt;EditItemTemplate&gt; &lt;asp:Label ID="lblCustomerId" Text='&lt;%# Eval("CustomerID") %&gt;' runat="server" /&gt; &lt;/EditItemTemplate&gt; &lt;InsertItemTemplate&gt; &lt;asp:TextBox ID="txtCustomerId" Text='&lt;%# Bind("CustomerID") %&gt;' MaxLength="5" width="50px" runat="server" /&gt; &lt;cc1:DataAnnotationsValidator ID="CustomerIdValidator" Type="String" runat="server" ControlToValidate="txtCustomerId" PropertyName="CustomerID" Text="*" SourceType="DataLayerPOCO.Customer, DataLayerPOCO" CssError="validationError" Display="None"/&gt; &lt;/InsertItemTemplate&gt; &lt;HeaderStyle HorizontalAlign="Right" /&gt; &lt;ItemStyle HorizontalAlign="Left" /&gt; &lt;/asp:TemplateField&gt; &lt;%--CompanyName--%&gt; &lt;asp:TemplateField HeaderStyle-CssClass="detailsHeader" ItemStyle-CssClass="detailsField"&gt; &lt;HeaderTemplate&gt; &lt;asp:Literal ID="ltrCompanyNameLabel" meta:resourcekey="ltrCompanyName" Text="Company Name:" runat="server" /&gt; &lt;/HeaderTemplate&gt; &lt;ItemTemplate&gt; &lt;asp:Literal ID="ltrCompanyName" Text='&lt;%# Eval("CompanyName") %&gt;' runat="server"/&gt; &lt;/ItemTemplate&gt; &lt;EditItemTemplate&gt; &lt;asp:TextBox ID="txtCompanyName" Text='&lt;%# Bind("CompanyName") %&gt;' MaxLength="40" Width="310px" runat="server" /&gt; &lt;cc1:DataAnnotationsValidator ID="CompanyNameValidator" Type="String" runat="server" ControlToValidate="txtCompanyName" PropertyName="CompanyName" Text="*" SourceType="DataLayerPOCO.Customer, DataLayerPOCO" CssError="validationError" Display="None"/&gt; &lt;/EditItemTemplate&gt; &lt;InsertItemTemplate&gt; &lt;asp:TextBox ID="txtCompanyName" Text='&lt;%# Bind("CompanyName") %&gt;' MaxLength="40" Width="310px" runat="server" /&gt; &lt;cc1:DataAnnotationsValidator ID="CompanyNameValidator" Type="String" runat="server" ControlToValidate="txtCompanyName" PropertyName="CompanyName" Text="*" SourceType="DataLayerPOCO.Customer, DataLayerPOCO" CssError="validationError" Display="None"/&gt; &lt;/InsertItemTemplate&gt; &lt;HeaderStyle HorizontalAlign="Right" /&gt; &lt;/asp:TemplateField&gt; ... ... other fields goes here ... ... &lt;%--Edit/Insert--%&gt; &lt;asp:TemplateField HeaderStyle-CssClass="detailsHeader" ItemStyle-CssClass="detailsField"&gt; &lt;ItemTemplate&gt; &lt;asp:ImageButton ID="imgEdit" ImageUrl="~/img/pencil.png" meta:resourcekey="imgEdit" AlternateText="Edit" ToolTip="Edit Customer" CommandName="Edit" runat="server" CausesValidation="false"/&gt; &lt;asp:ImageButton ID="imgDelete" ImageUrl="~/img/delete.png" meta:resourcekey="imgDelete" AlternateText="Delete" ToolTip="Delete Customer" CommandName="Delete" OnClientClick="return confirmDelete();" runat="server" CausesValidation="false"/&gt; &lt;/ItemTemplate&gt; &lt;EditItemTemplate&gt; &lt;asp:ImageButton ID="imgUpdate" ImageUrl="~/img/accept.png" meta:resourcekey="imgUpdate" AlternateText="Update" ToolTip="Update Customer" CommandName="Update" runat="server" /&gt; &lt;asp:ImageButton ID="imgCancel" ImageUrl="~/img/cancel.png" meta:resourcekey="imgCancel" AlternateText="Cancel" ToolTip="Cancel Edit" CommandName="Cancel" runat="server" CausesValidation="false"/&gt; &lt;/EditItemTemplate&gt; &lt;InsertItemTemplate&gt; &lt;asp:ImageButton ID="imgSave" ImageUrl="~/img/disk.png" meta:resourcekey="imgSave" AlternateText="Save" ToolTip="Save Customer Data" CommandName="Insert" runat="server" CausesValidation="true"/&gt; &lt;asp:ImageButton ID="imgCancelInsert" ImageUrl="~/img/cancel.png" meta:resourcekey="imgCancelInsert" AlternateText="Cancel" ToolTip="Cancel Insert" CommandName="Cancel" runat="server" CausesValidation="false"/&gt; &lt;/InsertItemTemplate&gt; &lt;/asp:TemplateField&gt; &lt;Fields&gt; &lt;/asp:DetailsView&gt; </code></pre> <p>The event ItemUpdating is like below:</p> <pre><code> protected void customerDetails_ItemUpdating(object sender, DetailsViewUpdateEventArgs e) { repository = repository ?? new NorthwindRepositoryEF(); string id = e.Keys["CustomerID"] as string; DataLayerPOCO.Customer customer = repository.GetCustomer(id); string companyName = (string)e.NewValues["CompanyName"]; string contactName = (string)e.NewValues["ContactName"]; string contactTitle = (string)e.NewValues["ContactTitle"]; string address = (string)e.NewValues["Address"]; string city = (string)e.NewValues["City"]; string region = (string)e.NewValues["Region"]; string postalCode = (string)e.NewValues["PostalCode"]; string country = (string)e.NewValues["Country"]; string phone = (string)e.NewValues["Phone"]; string fax = (string)e.NewValues["Fax"]; // Update Customer with the new data customer.CompanyName = companyName; customer.ContactName = contactName; customer.ContactTitle = contactTitle; customer.Address = address; customer.City = city; customer.Region = region; customer.PostalCode = postalCode; customer.Country = country; customer.Phone = phone; customer.Fax = fax; repository.UpdateCustomer(customer); repository.Save(); //--- customerDetails.ChangeMode(DetailsViewMode.ReadOnly); BindCustomerDetails(); BindCustomersList(); } </code></pre> <p>The problem is that if I want to handle the old values, I can´t:</p> <p>this, evaluates to 0: int oldValuesCount = e.OldValues.Count;</p> <p>and this, evaluates to null, even if I alter the value to a new one: string companyNameOld = e.OldValues["CompanyName"] as string;</p>
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    1. USoutlookrperson
    1. USoutlookrperson
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      1. POOldValues collection in event "ItemUpdating" of DetailsView is always empty
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      1. VTUpMod
    1. COcan you post your code, how you are doing?
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      1. POOldValues collection in event "ItemUpdating" of DetailsView is always empty
      1. USMuhammad Akhtar
    2. CO@MuhammadAkhtar, thanks for your interest. I´ve added new complementary informations as you have asked.
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      1. POOldValues collection in event "ItemUpdating" of DetailsView is always empty
      1. USoutlookrperson
 

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