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POWebForms Model Binding: Automatically map updated values to Item
 

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  1. POWebForms Model Binding: Automatically map updated values to Item
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    <p>I'm currently working on a little dummy application to get my head around the new (awesome) model binding in WebForms. I've succesfully listed data both in a ListView and a FormView, however I'm stuck on updating the data.</p> <p>I have a very simple FormView control:</p> <pre><code>&lt;asp:FormView runat="server" ID="formViewOrderDetail" ItemType="ModelBindingDummy.Models.Order" DataKeyNames="Id" SelectMethod="GetOrder" UpdateMethod="UpdateOrder"&gt; &lt;ItemTemplate&gt; &lt;p&gt;Supplier Order Number: &lt;%#: Item.SupplierOrderNumber %&gt;&lt;/p&gt; &lt;asp:LinkButton Text="Edit" runat="server" ID="linkEdit" CommandName="Edit" /&gt; &lt;/ItemTemplate&gt; &lt;EditItemTemplate&gt; &lt;p&gt;Supplier Order Number: &lt;asp:TextBox runat="server" ID="SupplierOrderNumber" Text='&lt;%#: Item.SupplierOrderNumber %&gt;' /&gt; &lt;/p&gt; &lt;asp:LinkButton Text="Cancel" runat="server" CommandName="Cancel" /&gt; &lt;asp:LinkButton Text="Save" runat="server" CommandName="Update" /&gt; &lt;/EditItemTemplate&gt; &lt;/asp:FormView&gt; </code></pre> <p>My <code>UpdateOrder</code> method looks like this:</p> <pre><code>public void UpdateOrder(int id) { ModelBindingDummy.Models.Order item = GetOrder(id); if (item == null) { ModelState.AddModelError("", String.Format("Item with id {0} was not found", id)); return; } TryUpdateModel(item); //All data in the app is in-memory, so no need to actually update //the item as it is only a reference } </code></pre> <p>Now my problem is that the TryUpdateModel doesn't work. It simply ignores the value in the TextBox <code>SupplierOrderNumber</code></p> <p>I've tried adding a parameter to the update method, <code>[Control] string supplierOrderNumber</code>, and while that works, I'd really like to see a way to automatically map that value.</p> <p>I've also seen solutions using the <code>&lt;asp:DynamicEntity /&gt;</code> control, but that seems somewhat overkill.</p> <p>So my question is: Is it possible to get the <code>TryUpdateModel</code> method to map the TextBox value, or do I need to go all the way with the <code>DynamicEntities</code> control, or are there any other fancy solutions?</p> <p>Thanks!</p>
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    1. USChristoffer Mansfield
    1. USChristoffer Mansfield
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