What is the solution for "The Type or namespace 'AjaxControlToolkit' could not be found..."?

user_3064392 0
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 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.

I have Declared this javascript but what is the problem.

<%@ 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" %>
textbox asp.net javascript database c#
6 Answers

Way to reference a dll is:

  1. In Solution Explorer, select the project.
  2. On the Project menu, click Add Reference. The Add Reference dialog box opens.
  3. Select the tab indicating the type of component you want to reference. (If you don't find your .dll in the list, then go to the browse tab and find it in your directory)

An article on MSDN to include installed libraries.

And there is another way to do it, too.

user_19109200

You're missing an assembly reference. So you need to reference AjaxControlToolkit.dll in your project.

user_30300580

Add AjaxControlToolkit.dll in your bin folder and then clean solution and rebuild your solution

user_100946360
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