Show Hide Table Row based database column value using C# and VB.Net in ASP.Net

Refer below code.

HTML

<div class="main">
    <asp:HiddenField ID="hfAutoId" runat="server" />
    <br />
    <asp:Label ID="lblMsg" runat="server" />
    <table cellpadding="2" cellspacing="2">
        <tr>
            <td style="align-content: Center" colspan="6">
                <asp:Label ID="headerLabel" runat="server" Text="Edit Address Information" CssClass="pageTitle" /></td>
        </tr>
        <tr>
            <th colspan="4">Address</th>
        </tr>
        <tr>
            <td colspan="4">
                <asp:TextBox Width="625px" ID="streetAddress" runat="server" /></td>
        </tr>
        <tr>
            <th>City</th>
            <th>State</th>
            <th>Zip</th>
            <th>Water Account #</th>

        </tr>
        <tr id="installCityStateZip" runat="server">
            <td>
                <asp:DropDownList ID="city" AutoPostBack="true" runat="server" /></td>
            <td>
                <asp:TextBox ID="state" runat="server" Text="GA" ReadOnly="true" /></td>
            <td>
                <asp:DropDownList ID="zip" AppendDataBoundItems="true" runat="server">
                    <asp:ListItem Text="--Select--" Value="" />
                </asp:DropDownList></td>
            <td>
                <asp:TextBox ID="waterAccountNo" runat="server" /></td>
        </tr>
        <tr id="mailCityStateZip" runat="server">
            <td>
                <asp:TextBox ID="mailCity" runat="server" /></td>
            <td>
                <asp:TextBox ID="mailState" runat="server" /></td>
            <td>
                <asp:TextBox ID="mailZip" runat="server" /></td>
            <td>
                <asp:TextBox ID="waterAccountNumber" runat="server" /></td>
        </tr>
        <tr>
            <th colspan="2">Address Type</th>
            <th>Year Built</th>
            <th>Toilets
        <asp:Image runat="server" ID="toiletInfo" ImageAlign="Bottom" GenerateEmptyAlternateText="true" ImageUrl="~/Img/Tip_16x16_72.png"
            ToolTip="The total number of toilets in the home (not the number of bathrooms), 3-1/2 bathrooms should be entered as 4 toilets" />
            </th>
        </tr>
        <tr style="border: 1px solid red;">
            <td>
                <asp:CheckBox ID="installation" Text="&nbsp;Installation" AutoPostBack="true" runat="server" /></td>
            <td>
                <asp:CheckBox ID="mailing" Text="&nbsp;Mailing" runat="server" /></td>
            <td>
                <asp:TextBox ID="yearBuilt" runat="server" /></td>
            <td>
                <asp:TextBox ID="toilets" runat="server" /></td>
        </tr>
        <tr>
            <th>No. of Toilets Upgraded</th>
            <th>Address ID</th>
        </tr>
        <tr>
            <td>
                <asp:TextBox ID="ToiletReplaced" runat="server" Text="&nbsp;" /></td>
            <td>
                <asp:Label ID="AUTOID" runat="server" Text="&nbsp;" /></td>

            <td>&nbsp;</td>
            <td>
                <asp:Button ID="updateAddress" runat="server" Text="Update Address" /></td>
        </tr>
        <tr>
            <th colspan="4">Notes</th>
        </tr>
        <tr>
            <td colspan="4">
                <asp:TextBox Width="625px" ID="notes" runat="server" /></td>
        </tr>
    </table>
</div>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        // Set variable from SqlDataReader.
        bool? isSame = false;
        if (isSame == true && isSame != null)
        {
            installCityStateZip.Visible = true;
            installation.Checked = true;
            mailCityStateZip.Visible = false;
            mailing.Checked = true;
        }
        else
        {
            installCityStateZip.Visible = false;
            installation.Checked = true;
            mailCityStateZip.Visible = true;
            mailing.Checked = false;
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        ' Set variable from SqlDataReader.
        Dim isSame As Boolean? = False
        If isSame = True AndAlso isSame IsNot Nothing Then
            installCityStateZip.Visible = True
            installation.Checked = True
            mailCityStateZip.Visible = False
            mailing.Checked = True
        Else
            installCityStateZip.Visible = False
            installation.Checked = True
            mailCityStateZip.Visible = True
            mailing.Checked = False
        End If
    End If
End Sub