When a user selects a row in a Grid that selected Row Hiding column value have to retrieve.

How to Hide a column in a Gridview:

To hide a column we have to use a hidden filed as follows:

E.g.: <asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Bind("ProductId") %>' />

Above I am using a Value attribute to retrieve a data from a 'ProductId column.

Here I am displaying 4 columns values in a Gridview. In a Gridview i am using 'select 'link, when a user selects a row in Grid that selected Row id value have to retrieve.

How to create a' select 'link column in Gridview :

'Select' Link can be build by using 'CommandField' as follows:

<asp:CommandField ShowSelectButton="True" />

In .aspx page

<asp:GridView ID="Gridivew1" runat ="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" AllowPaging="True" BackColor="White" BorderColor="#CC9966" BorderStyle="None" BorderWidth="1px" CellPadding="4" OnRowDataBound="Gridivew1_RowDataBound" OnSelectedIndexChanged="Gridivew1_SelectedIndexChanged" >
<Columns>

<asp:CommandField ShowSelectButton="True" />

<asp:TemplateField HeaderText ="ProductName">
<ItemTemplate>
<asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Bind("ProductId") %>' />

<asp:Label ID ="lblProductName1" runat ="server" Text =''>
</asp:Label>

</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="ProductName">
<ItemTemplate>
<asp:Label ID ="lblQuantityPerUnit" runat ="server" Text =''>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="UnitPrice">
<ItemTemplate>
<asp:Label ID ="lblUnitPrice" runat ="server" Text =''>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>

</Columns>
<RowStyle BackColor="White" ForeColor="#330099" />
<FooterStyle BackColor="#FFFFCC" ForeColor="#330099" />
<PagerStyle BackColor="#FFFFCC" ForeColor="#330099" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="#FFFFCC" />

</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT * FROM [Products]"></asp:SqlDataSource>

Next Select your Gridview Events.Double click on SelectedIndexChanged Event and write the below code in .aspx.cs page:

    protected void Gridivew1_SelectedIndexChanged(object sender, EventArgs e)
    {

        string strValue = ((HiddenField)Gridivew1.SelectedRow.Cells[1].FindControl("HiddenField1")).Value;

        string strValue2 = ((Label)Gridivew1.SelectedRow.Cells[1].FindControl("lblProductName1")).Text;

        Response.Write("Product Id=" + strValue + "product=" + strValue2);

    }

Thanks for reading my article!