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POFormView.FindControl works for one form but not the other on the same page
 

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  1. POFormView.FindControl works for one form but not the other on the same page
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    <p>I have two Formviews on the same page. I can use FindControl on the first without issue, but it always fails on the second one.</p> <p>I am using the ItemTemplate for both, both default to ReadOnly, both are bound to SQLDataSources (different ones) but I cannot for the life of me work out why FindControl works for one and not the other.</p> <p>I have removed a lot of the plain text from the code below.</p> <pre><code>&lt;asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="&lt;%$ ConnectionStrings:SoftSaleDBConnectionString %&gt;" SelectCommand="SELECT * FROM [Apps] WHERE ([AppID] = @AppID)" &gt; &lt;SelectParameters&gt; &lt;asp:FormParameter FormField="AppID" Name="AppID" Type="Int32" /&gt; &lt;/SelectParameters&gt; &lt;/asp:SqlDataSource&gt; &lt;asp:FormView ID="FormView1" runat="server" DataKeyNames="AppID" DataSourceID="SqlDataSource1"&gt; &lt;ItemTemplate&gt; &lt;h1&gt; &lt;asp:Label ID="AppNameLabel" runat="server" Text='&lt;%# Bind("AppName") %&gt;' /&gt; &lt;asp:Label ID="VersionLabel" runat="server" Text='&lt;%# Bind("Version") %&gt;' /&gt; for &lt;asp:Label ID="OSLabel" runat="server" Text='&lt;%# Bind("OS") %&gt;' /&gt; &lt;/h1&gt; &lt;p&gt;Text here&lt;/p&gt; &lt;p&gt;&lt;asp:TextBox ID="LicenseTextBox" runat="server" Text='&lt;%# Eval("License")%&gt;' TextMode="MultiLine" Width="800px" Rows="25" ReadOnly="True"&gt;&lt;/asp:TextBox&gt;&lt;/p&gt; &lt;asp:HiddenField ID="AppLocation" runat="server" ViewStateMode="Inherit" Value='&lt;%# Bind("AppLocation") %&gt;'/&gt; &lt;/ItemTemplate&gt; &lt;/asp:FormView&gt; &lt;p&gt;&lt;asp:Literal ID="SizeLiteral" runat="server"&gt;&lt;/asp:Literal&gt;&lt;/p&gt; &lt;asp:SqlDataSource ID="SqlDataSource4" runat="server" ConnectionString="&lt;%$ ConnectionStrings:SoftSaleDBConnectionString %&gt;" SelectCommand="SELECT * FROM [Installations] WHERE (([AppID] = @AppID) AND ([Username] = @Username))" &gt; &lt;SelectParameters&gt; &lt;asp:FormParameter FormField="AppID" Name="AppID" Type="Int32" /&gt; &lt;asp:FormParameter FormField="Username" Name="Username" Type="String" /&gt; &lt;/SelectParameters&gt; &lt;/asp:SqlDataSource&gt; &lt;asp:FormView ID="DLFormView" runat="server" DataSourceID="SqlDataSource4" DataKeyNames="AppID,Username"&gt; &lt;ItemTemplate&gt; &lt;p&gt; &lt;asp:Label ID="DLAppNameLabel" runat="server" /&gt; &lt;br /&gt; &lt;br /&gt; &lt;asp:Label ID="NumberOfInstallations" runat="server" Text='&lt;%# Bind("Installations") %&gt;'&gt;&lt;/asp:Label&gt; &lt;br /&gt; &lt;asp:HiddenField ID="TotalInstallations" runat="server" /&gt; Number of New Installations: &lt;asp:DropDownList ID="NumberOfNewInstallations" runat="server"&gt; &lt;/asp:DropDownList&gt; &lt;br /&gt; &lt;asp:Label ID="TotalNumberOfInstallations" runat="server" Text="Label"&gt;&lt;/asp:Label&gt; &lt;/p&gt; &lt;/ItemTemplate&gt; &lt;/asp:FormView&gt; </code></pre> <p>And the FindControl coding is as follows...</p> <pre><code>TextBox LicTextBox = (TextBox)FormView1.FindControl("LicenseTextBox"); HiddenField AppLocCode = (HiddenField)FormView1.FindControl("AppLocation"); Label AppNameCode = (Label)FormView1.FindControl("AppNameLabel"); </code></pre> <p>These always work...</p> <pre><code>Label DLAppNameCode = (Label)DLFormView.FindControl("DLAppNameLabel"); </code></pre> <p>This always returns null. I've read a million bosts about the controls not being rendered until databinding has completed, but surely if the two FOrmViews are set up the same way, the result should be the same.</p> <p>Any help would be much apreciated :)</p> <p>Matt :)</p>
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    1. USMatty W
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    1. COI'd just like to add that I've also checked whether the SqlDataSources are returning records and they both are.
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    2. COI've noticed that when I step through the code and reach `TextBox LicTextBox = (TextBox)FormView1.FindControl("LicenseTextBox");` The debugger jumps into the aspx page and looks through all the asp fields in FormView1. When I reach `Label DLAppNameCode = (Label)DLFormView.FindControl("DLAppNameLabel");` The code does not jump to the aspx page adn therefore does not search for any asp controls. Anyone know why?
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    3. COI have tried a few more things now to no avail. I have tried putting DLFormView first in the aspx page and trying to find the label in DLFormView before FormView1; I have tried to use FindControl on other controls on the page but it won't find any at all, even at the page level (This idea here was to find the parent of the label and then use that object to find the label). FindControl only works for FormView1 and I can't work out why. Some help would be much appreciated. :)
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