ASP.NET

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Src="~/DI_UserControls/AppForm0602.ascx" TagName="AppForm602" TagPrefix="AppForm602" %>
<%@ Register Src="~/DI_UserControls/AppForm0719.ascx" TagName="AppForm719" TagPrefix="AppForm719" %>
<%@ Register Src="~/DI_UserControls/AppForm0466.ascx" TagName="AppForm466" TagPrefix="AppForm466" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

    <div>
    <table>            
        <tr>
            <td>
                <asp:PlaceHolder ID="DIPlaceHolder" runat="server"></asp:PlaceHolder>
               
            </td>
        </tr>
    </table>
    </div>

protected void Page_Load(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["con1"].ConnectionString.ToString());
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "sp_GetPages";
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Connection = con;
        cmd.Parameters.AddWithValue("@PageID", 12);
        cmd.Parameters.AddWithValue("@ApplicationID", 157);
        SqlDataAdapter adpt = new SqlDataAdapter(cmd);
        DataTable dt = new DataTable();
        adpt.Fill(dt);
        cmd.CommandText = "sp_GetPageDependency";
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Connection = con;
        cmd.Parameters.Clear();
        cmd.Parameters.AddWithValue("@PageID", 12);
        SqlDataAdapter adpt1 = new SqlDataAdapter(cmd);
        DataTable dt1 = new DataTable();
        adpt1.Fill(dt1);
         foreach (DataRow row in dt.Rows)
        {
            int colValue = Convert.ToInt32(row[4].ToString());
            switch (colValue)
            {
               
                case 602:
                    obj602 = LoadControl("~/DI_UserControls/AppForm0602.ascx") as DI_UserControls_AppForm0602;
                    obj602.ID = "602";


                    DIPlaceHolder.Controls.Add(obj602);
                    DIPlaceHolder.Controls.Add(InsertLineBreaks(1));

                    break;
                case 466:
                    obj466 = LoadControl("~/DI_UserControls/AppForm0466.ascx") as DI_UserControls_AppForm0466;
                    obj466.ID = "466";


                    DIPlaceHolder.Controls.Add(obj466);
                    DIPlaceHolder.Controls.Add(InsertLineBreaks(1));
                    break;
}
}

Quote:

Error 20 The type 'System.Web.UI.ExtenderControl' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'

Quote:

<ajaxtoolkit:toolkitscriptmanager runat="Server" id="ScriptManager1">

Delete all existing files prior to publish

The project targets '.NETCore' while the file reference targets '.NETFramework'. This is not a supported scenario