Error 3 The type or namespace name 'AjaxControlToolkit' could not be found
in the global namespace (are you missing an assembly reference?)
D:\My App\table\PopUpdata.aspx.designer.cs 58 27 table.
<%@ Page Title="Show Data From Menu" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="PopUpdata.aspx.cs" Inherits="table.PopUpdata" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>Answer1:
Way to reference a
An <a href="http://msdn.microsoft.com/en-us/library/fwawt96c%28v=vs.110%29.aspx" rel="nofollow">article</a> on <strong>MSDN</strong> to include installed libraries.
an There is <a href="http://www.asp.net/ajaxlibrary/GetFile.aspx?Page=act&File=AddToolbox.gif" rel="nofollow">another way</a> to do it.Answer2:
To have the needed references for AjaxControlToolkit
<strong>Right Click project/solution > Manage NuGet Packages..>install Ajax control Toolkit.</strong>
This will add needed assemblies to your solution.Answer3:
I have faced the same issue. I have deleted all the files from the bin folder and then added the files back to the folder. It worked successfully. Hope it resolves your issue.Answer4:
You're missing an assembly reference. So you need to reference AjaxControlToolkit.dll in your project.Answer5:
This is general issue of dll
for solving this you must have 3 dll in your Bin folder
2--AjaxControlToolkit.dll.refresh (Refresh file)
3--AjaxControlToolkit (Program Debug database)
<a href="https://i.stack.imgur.com/uetR9.png" rel="nofollow"><img alt="enter image description here" class="b-lazy" data-src="https://i.stack.imgur.com/uetR9.png" data-original="https://i.stack.imgur.com/uetR9.png" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" /></a>
Now just add the AjaxControlToolkit.dll refrence in your application.