Hide DetailsView TemplateField from CodeBehind

Question

I am attempting to hide a DetailsView Row conditionally from code behind. I'd like to be able to call SomeMethod based on some condition and have it to hide Row 12. Does anyone know how I can go about accomplishing this?

I have used the debugger to confirm that Row[12] is the correct row and that the method is being executed.

protected void SomeMethod(object sender, EventArgs e)
{
    DetailsView1.Rows[12].visible= false;

   //Alternative methods I attempted that also did not work.
     //DetailsViewRow row = DetailsView1.DataItem as DetailsViewRow;
     //row[12].Visible = false;
    //DetailsViewRow row = DetailsView1.Rows[12];
    //row.visible = false;
}

This is my aspx.

<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataSourceID="ObjectDataSource2">
...
<asp:TemplateField HeaderText="Item" 
            SortExpression="Item">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Item") %>'></asp:TextBox>
            </EditItemTemplate>
            <InsertItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Item") %>'></asp:TextBox>
            </InsertItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label2" runat="server" Text='<%# Bind("Item") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
...

Answer 1

You have to use Fields collection of DetailsView. Your method should look like:

protected void SomeMethod(object sender, EventArgs e)
{
    DetailsView1.Fields[12].Visible= false;
}

To test create add a DetailsView to page, add a button:

<asp:DetailsView ID="DetailsView1" AutoGenerateRows="false"   runat="server" Height="50px" Width="125px">
    <Fields>

        <asp:TemplateField HeaderText="Id" SortExpression="Id">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Id") %>'></asp:TextBox>
            </EditItemTemplate>
            <InsertItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Id") %>'></asp:TextBox>
            </InsertItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label2" runat="server" Text='<%# Bind("Id") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Name" SortExpression="Name">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox>
            </EditItemTemplate>
            <InsertItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox>
            </InsertItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label2" runat="server" Text='<%# Bind("Name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Category" SortExpression="Category">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Category") %>'></asp:TextBox>
            </EditItemTemplate>
            <InsertItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Category") %>'></asp:TextBox>
            </InsertItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label2" runat="server" Text='<%# Bind("Category") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Fields>
</asp:DetailsView>
<br />
<asp:Button ID="btnHide" runat="server" Text="Hide" OnClick="SomeMethod" />

And add the following code in code behind:

public partial class WebForm1 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DetailsView1.DataSource = GetProduct();
            DetailsView1.DataBind();
        }
    }

    private List<Product> GetProduct()
    {

        return new List<Product>()
        {
            new Product{Id=1, Name="Paper", Category="Stationery"},
            new Product{Id=2, Name="Pen", Category="Stationery"},
            new Product{Id=3, Name="Pencil", Category="Stationery"}
        };
    }

    protected void SomeMethod(object sender, EventArgs e)
    {
        DetailsView1.Fields[0].Visible = false;
    }
}


public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string Category { get; set; }
}

And here's the result: