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POHow does FormView EditTemplate update values in ObjectDataSource UpdateParameters under the hood?
 

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  1. POHow does FormView EditTemplate update values in ObjectDataSource UpdateParameters under the hood?
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    <p>I have a FormView bound to an ObjectDataSource.</p> <p><strong>* ObjectDataSource definition (omitted portion of it for simplicity)*</strong></p> <pre><code>&lt;asp:ObjectDataSource ID="odsHousehold" runat="server" TypeName="BLL.Households" ConflictDetection="OverwriteChanges" UpdateMethod="UpdateHousehold" &gt; &lt;UpdateParameters&gt; &lt;asp:Parameter Name="sName" Type="String" Direction="Input" /&gt; &lt;asp:Parameter Name="sAddress" Type="String" Direction="Input" DefaultValue="" /&gt; &lt;asp:Parameter Name="sCity" Type="String" Direction="Input" DefaultValue="" /&gt; &lt;asp:Parameter Name="sState" Type="String" Direction="Input" DefaultValue="" /&gt; &lt;asp:Parameter Name="sZip" Type="String" Direction="Input" DefaultValue="" /&gt; &lt;/UpdateParameters&gt; &lt;/asp:ObjectDataSource&gt; </code></pre> <p><strong>* FormView definition (omitted portion of it for simplicity) *</strong></p> <pre><code> &lt;asp:FormView ID="fvHousehold" runat="server" DataKeyNames="HouseholdID" DataSourceID="odsHousehold" HorizontalAlign = "Left" &gt; &lt;EditItemTemplate&gt; &lt;asp:TextBox ID="txtHouseHoldName" runat="server" MaxLength="50" Width="100%" Text='&lt;%# Bind("HouseholdName") %&gt;'&gt;&lt;/asp:TextBox&gt; &lt;asp:TextBox ID="txtAddress" runat="server" MaxLength="50" Width="100%" Text='&lt;%# Bind("Address") %&gt;'&gt;&lt;/asp:TextBox&gt; &lt;asp:TextBox ID="txtCity" runat="server" MaxLength="50" Width="100%" Text='&lt;%# Bind("City") %&gt;'&gt;&lt;/asp:TextBox&gt; &lt;asp:TextBox ID="txtState" runat="server" MaxLength="50" Width="100%" Text='&lt;%# Bind("State") %&gt;'&gt;&lt;/asp:TextBox&gt; &lt;asp:TextBox ID="txtZip" runat="server" MaxLength="50" Width="100%" Text='&lt;%# Bind("Zip") %&gt;'&gt;&lt;/asp:TextBox&gt; &lt;asp:Button ID="btnUpdateHousehold" runat="server" Text="Update" CommandName="Update" /&gt; &lt;/EditItemTemplate&gt; &lt;/asp:FormView&gt; </code></pre> <p><strong><em>I'd like to know: how does the FormView know which UpdateParameter to populate with which EditTemplate TextBox when the Update button is clicked?<br/> For instance, I haven't instructed "txtAddress" in the FormView to populate the UpdateParameter "sAddress" but InputParameters["sAddress"] contains the Text value of txtAddress. How does it know to do that? <br/></em></strong> <br/> Could any guru enlighten me?</p> <p>Thank you so much,</p> <p>Cullen</p>
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      1. POHow does FormView EditTemplate update values in ObjectDataSource UpdateParameters under the hood?
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    1. COSo, does this code work for you or not? Are you just asking "how" for academic reasons, or because it's not binding for you the way you want?
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      1. USJon Adams
 

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