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POValidating dropdownlist inside gridview control
 

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    <p>for testing i have tried customvalidation</p> <pre><code>function ClientValidate(sender, args) { //return false for testing... args.IsValid = false; } &lt;asp:CustomValidator runat="server" ID="CustomValidator1" ControlToValidate="ddldetail" Text="Please select" ValidateEmptyText="true" ClientValidationFunction="ClientValidate" Display="Dynamic"&gt; &lt;/asp:CustomValidator&gt; </code></pre> <p>edit: here is what i exaclty wants to happen:</p> <p><img src="https://i.stack.imgur.com/L2lrf.png" alt="enter image description here"></p> <p>how to validate a dropdownlist and i have done this zillion times but what i am doing wrong here? any second pair of eye might spot it? i am trying to validate the dropdownlist if the user have not select any help?</p> <pre><code>&lt;asp:Button ID="btn" runat="server" Text="Submit" OnClick="btn_Click" CausesValidation="true"/&gt; &lt;asp:GridView ID="GVInputMapping" runat="server" AutoGenerateColumns="False" DataKeyNames="Id" EnableModelValidation="True" onrowdatabound="GVInputMapping_RowDataBound"&gt; &lt;Columns&gt; &lt;asp:BoundField DataField="Name" ControlStyle-Width="250px" HeaderText="Name" SortExpression="Name" /&gt; &lt;asp:TemplateField&gt; &lt;ItemTemplate&gt; &lt;asp:DropDownList runat="server" ID="ddldetail"&gt; &lt;asp:ListItem Selected="True" Value="0"&gt;Select me&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="1"&gt;abc&lt;/asp:ListItem&gt; &lt;asp:ListItem Value="2"&gt;GHt&lt;/asp:ListItem&gt; &lt;/asp:DropDownList&gt; &lt;asp:RequiredFieldValidator ID="requiredDDL" runat="server" ControlToValidate="ddldetail" ErrorMessage="Please select" InitialValue="Select me" Display="Dynamic"&gt;&lt;/asp:RequiredFieldValidator&gt; &lt;/ItemTemplate&gt; &lt;/asp:TemplateField&gt; &lt;/Columns&gt; &lt;/asp:GridView&gt; </code></pre>
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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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