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POSelected row GridView won't extract data
 

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  1. POSelected row GridView won't extract data
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    <p>I have a GridView which I am filling with data from my database. The data displays perfectly. My problem is that I want to be able to click on a row and then display the information that is in that row elsewhere (eventually I'll have a splitscreen to format the selected data nicely). The selection works, because it highlights the current row. However, I cannot figure out how to display that data elsewhere. For now, I'm trying to display the content of a single cell in a label called testLabel. I've tried many different methods, and the testLabel never updates when I click a new row. Can anybody see what is going wrong here?</p> <p>C#</p> <pre><code>protected void DefaultGrid_SelectedIndexChanged(Object sender, EventArgs e) { GridViewRow row = DefaultGrid.SelectedRow; testLabel.Text = row.Cells[2].Text; } </code></pre> <p>ASPX</p> <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head runat="server"&gt; &lt;title&gt;&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;asp:ScriptManager ID = "ScriptManager" runat="server" /&gt; &lt;div&gt; &lt;div&gt; &lt;asp:Label runat="server" id = "orderByLabel" Text = "Order By: " /&gt; &lt;asp:DropDownList runat="server" ID="orderByList" AutoPostBack="true"&gt; &lt;asp:ListItem Value="fName" Selected="True"&gt;First Name&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="lName"&gt;Last Name&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="state"&gt;State&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="zip"&gt;Zip Code&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="cwaSource"&gt;Source&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="cwaJoined"&gt;Date Joined&lt;/asp:ListItem&gt; &lt;/asp:DropDownList&gt; &lt;/div&gt; &lt;div&gt; &lt;asp:Label runat="server" ID="searchLabel" Text="Search For: " /&gt; &lt;asp:TextBox ID="searchTextBox" runat="server" Columns="30" /&gt; &lt;asp:Button ID="searchButton" runat="server" Text="Search" /&gt; &lt;/div&gt; &lt;div align="center"&gt; &lt;asp:UpdatePanel ID = "up" runat="server"&gt; &lt;Triggers&gt; &lt;asp:AsyncPostBackTrigger ControlID = "orderByList" EventName="SelectedIndexChanged" /&gt; &lt;asp:AsyncPostBackTrigger ControlId="searchButton" EventName="Click" /&gt; &lt;/Triggers&gt; &lt;ContentTemplate&gt; &lt;asp:GridView ID="DefaultGrid" runat = "server" DataKeyNames = "fName" onselectedindexchanged = "DefaultGrid_SelectedIndexChanged" autogenerateselectbutton = "true" selectedindex="0"&gt; &lt;SelectedRowStyle BackColor="Azure" forecolor="Black" font-bold="true" /&gt; &lt;Columns&gt; &lt;asp:ButtonField CommandName="Select" Visible="false" /&gt; &lt;/Columns&gt; &lt;/asp:GridView&gt; &lt;/ContentTemplate&gt; &lt;/asp:UpdatePanel&gt; &lt;/div&gt; &lt;/div&gt; &lt;div&gt; &lt;asp:Label runat="server" ID="testLabel" Text="test" /&gt; &lt;/div&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. USHani Honey
    1. USHani Honey
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    1. This table or related slice is empty.
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    1. COAt first glance, it should be working. Can you show the code that populate the data?
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      1. POSelected row GridView won't extract data
      1. USAdrian Carneiro
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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