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POHow to set DropDownList's selected value inside a Repeater?
 

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  1. POHow to set DropDownList's selected value inside a Repeater?
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    <p>I need to create a group of <code>DropDownList</code>s to show and allow change of a property group for an item.</p> <p>I have the following code on my ASP page.</p> <pre><code>&lt;asp:Repeater runat="server" ID="repeaterProperties"&gt; &lt;ItemTemplate&gt; &lt;p&gt;&lt;asp:DropDownList runat="server" ID="ddProperty" OnInit="ddProperty_OnInit" /&gt;&lt;p&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; </code></pre> <p>The <code>ddProperty_OnInit</code> populates the <code>DropDownList</code> with all the possible values with a database query.</p> <p>How can I set the selected value of each created <code>DropDownList</code> according to the <code>Repeater</code>'s source data?</p> <p>Let's say, for example, that we have the possible property values of <code>A</code>, <code>B</code> and <code>C</code>.<br> If the database output for the <code>Repeater</code> contains two of those values, <code>A</code> and <code>B</code>, the <code>Repeater</code> outputs two <code>DropDownList</code>s, both with all 3 values availabla and the first one with <code>A</code> as selected value and the second one with <code>B</code> as selected value.</p> <p><strong>Edit:</strong><br> It seems that adding <code>OnItemDataBound="repeater_ItemDataBound"</code> to the <code>Repeater</code> and selecting the appropriate value in there is not the way to go in my case. This is because I also need to save the possibly changed values to a database.</p> <p>The <code>ItemDataBound</code> event of the <code>Repeater</code> is fired before the <code>OnClick</code> event on a <code>Button</code> and changes the selected values to their old values before the new selections can be saved.</p> <p>Any suggestion on how to work around this?</p> <p><em>Current code:</em></p> <pre><code>&lt;asp:Repeater runat="server" ID="repeaterJako" OnItemDataBound="repeater_ItemDataBound"&gt; &lt;ItemTemplate&gt; &lt;asp:DropDownList id="ddJako" runat="server" OnInit="ddJako_OnInit"&gt; &lt;/asp:DropDownList&gt;&lt;br /&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; &lt;asp:Button runat="server" id="updateButton" Text="Save" OnClick="update_OnClick" /&gt; </code></pre> <p>In the code-behind, <code>ddJako_OnInit</code> populates the drop down list with all the possible choises, while the <code>repeater_ItemDataBound</code> uses the method suggested by Bryan Parker to select the proper value.</p>
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