How do I hide a <tr> table row inside a Grid

Question

User1279376247 posted

I am able to hide a table row like this:

<tr id="testrow2" runat="server">

and then in my vb code:

testrow2.visible=false.

But how do I do it if my table is inside a grid and I need to do DirectCast

DirectCast(e.Row.FindControl("testrow2",????).visible=false

What kind of object is it?

Answer 1

User283571144 posted

Hi DaveBF，

DaveBF

But how do I do it if my table is inside a grid and I need to do DirectCast

DirectCast(e.Row.FindControl("testrow2",????).visible=false

What kind of object is it?

As far as I know, HTML server controls' class is 'HtmlControl'.

More details, you could refer to follow codes:

Code-behind:

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        For Each row As GridViewRow In GridView1.Rows
            'Dim Control1 As HtmlControl = row.FindControl("aaa")
            'Control1.Visible = False
            DirectCast(row.FindControl("aaa"), HtmlControl).Visible = False
        Next
    End Sub

ASPX:

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Id" DataSourceID="SqlDataSource1">
            <Columns>
                <asp:BoundField DataField="Id" HeaderText="Id" InsertVisible="False" ReadOnly="True" SortExpression="Id" />
                <asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
                <asp:BoundField DataField="password" HeaderText="password" SortExpression="password" />
                <asp:BoundField DataField="State" HeaderText="State" SortExpression="State" />
                <asp:TemplateField HeaderText="City" SortExpression="City">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("City") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("City") %>'></asp:Label>
                            <table  >
                            <tr  id="aaa" runat="server" clientidmode="Static"  >
                                <td>
                                    aaaa
                                </td>
                                <td>
                                    bbbb
                                </td>
                            </tr>
                                  <tr >
                                <td>
                                   cccc
                                </td>
                                <td>
                                    dddd
                                </td>
                            </tr>
                        </table>

                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

Link:

https://msdn.microsoft.com/en-us/library/system.web.ui.htmlcontrols.htmlcontrol(v=vs.110).aspx

Best Regards,

Brando

Answer 2

User-63706186 posted

Hi

if your "tr" having as runat="server" tag and then you can access them directly  in code behind

if you can use this approach of benefits as the "tr" space will be remove at the runtime.

testrow2.Attributes.Add("style","display:none");

this approach of drawback as the "tr" space will be occupied at the runtime

testrow2.visible=false;

I know C# only man i think you can refer solutions tips