Edit Update Dynamic Pages in ASP.Net

Here I have created sample that will help you out.

Default.aspx

<div>
    <h2>
        Dynamic Pages</h2>
    <br />
    <asp:HyperLink NavigateUrl="~/AddPage.aspx" Text="Add Page" runat="server" />
    <hr />
    <asp:Repeater ID="rptPages" runat="server">
        <HeaderTemplate>
            <table>
                <tr>
                    <th>
                        Pages
                    </th>
                    <th>
                    </th>
                </tr>
        </HeaderTemplate>
        <ItemTemplate>
            <tr>
                <td>
                    <%# Container.ItemIndex + 1 %>
                    <asp:HyperLink ID="HyperLink1" NavigateUrl='<%# Eval("PageName", "~/Pages/{0}.aspx") %>'
                        Text='<%# Eval("Title") %>' runat="server" />
                </td>
                <td>
                    <asp:HyperLink NavigateUrl='<%#Eval("PageName","~/AddPage.aspx?PageName={0}") %>'
                        runat="server" Text="Edit" />
                </td>
            </tr>
        </ItemTemplate>
        <FooterTemplate>
            </table>
        </FooterTemplate>
    </asp:Repeater>
</div>

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindPages();
    }
}

private void BindPages()
{
    string query = "SELECT [PageName], [Title], [Content] FROM [Pages]";
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand(query))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                cmd.Connection = con;
                sda.SelectCommand = cmd;
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    rptPages.DataSource = dt;
                    rptPages.DataBind();
                }
            }
        }
    }
}

AddPage.aspx

<div>
    <table border="0" cellpadding="0" cellspacing="0">
        <tr>
            <td>
                Name:
            </td>
        </tr>
        <tr>
            <td>
                <asp:TextBox ID="txtPageName" runat="server" />
            </td>
        </tr>
        <tr>
            <td>
                &nbsp;
            </td>
        </tr>
        <tr>
            <td>
                Title:
            </td>
        </tr>
        <tr>
            <td>
                <asp:TextBox ID="txtTitle" runat="server" />
            </td>
        </tr>
        <tr>
            <td>
                &nbsp;
            </td>
        </tr>
        <tr>
            <td>
                Content:
            </td>
        </tr>
        <tr>
            <td>
                <asp:TextBox ID="txtContent" runat="server" TextMode="MultiLine" />
            </td>
        </tr>
        <tr>
            <td>
                &nbsp;
            </td>
        </tr>
        <tr>
            <td>
                <asp:Button ID="btnSubmit" Text="Submit" runat="server" OnClick="Submit" />
            </td>
        </tr>
    </table>
    <script type="text/javascript" src="//tinymce.cachefly.net/4.0/tinymce.min.js"></script>
    <script type="text/javascript">
        tinymce.init({ selector: 'textarea' });
    </script>
</div>

Code

private string PageName
{
    get
    {
        return Request.QueryString["PageName"];
    }
}

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        if (!string.IsNullOrEmpty(this.PageName))
        {
            PopulatePage();
        }
    }
}

protected void Submit(object sender, EventArgs e)
{
    string query = string.Empty;
    if (string.IsNullOrEmpty(PageName))
    {
        query = "INSERT INTO [Pages] VALUES (@PageName, @Title, @Content)";
    }
    else
    {
        query = "UPDATE [Pages] SET Title = @Title,Content = @Content WHERE PageName = @PageName";
    }
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand(query, con))
        {
            cmd.Parameters.AddWithValue("@PageName", txtPageName.Text.Replace(" ", "-"));
            cmd.Parameters.AddWithValue("@Title", txtTitle.Text);
            cmd.Parameters.AddWithValue("@Content", txtContent.Text);
            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();
            Response.Redirect("~/Default.aspx");
        }
    }
}

private void PopulatePage()
{        
    string query = "SELECT [Title], [Content] FROM [Pages] WHERE [PageName] = @PageName";
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand(query))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                cmd.Parameters.AddWithValue("@PageName", this.PageName);
                cmd.Connection = con;
                sda.SelectCommand = cmd;
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    txtTitle.Text = dt.Rows[0]["Title"].ToString();
                    txtContent.Text = dt.Rows[0]["Content"].ToString();
                    txtPageName.Text = this.PageName;
                    txtPageName.Enabled = false;
                }
            }
        }
    }
}

DynamicPage.apsx,Global.asax will be the same as given in referred article.

Screenshot