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c# how to use custom button in another project

I'm using Visual Studio 2015 and created a new class project where I inherited a button and modified some it features. I now want to use this button in another project. In this project, I've added a reference to it but when I try adding it to the toolbox I'm told that there are no components in the dll for it to be added to toolbox.
Is it possible to add this button without going down the route of the windows form control library?
The reason I don't want to go down this route is that I don't really need a container and want full access to all the buttons properties in any project I use it.

In the blank space at the bottom of the toolbox (you may have to collapse everything first) you can right-click to bring up the toolbox context menu. Select "Choose Items" and browse to your button you created.
In case you haven't already I would create the new button class in a new class library project. Make sure that it is public or it will default to internal which means it can't be used outside that assembly. change to release mode and compile it. Use that dll

Change a Toolbox for new component

ALL,
I have created a new component in Visual Studio inside the solution I'm working on my application.
Now I want that component to appear in the Toolbox of Visual Studio.
How can I do that?
I tried to close and re-open the solution and its not there.
Thank you.

When you rebuild your solution after creating the control, Visual Studio automatically adds the control by creating a new category named after your application. If for some reason, VS doesn't adds it, you can manually do it by right clicking in the toolbox and choosing Customize. A dialog box will appear listing assemblies to be added to the toolbox. Since you have a custom control, you need to browse for your control's DLL (You have it under Bin folder of your application). This will add the control to the toolbox.

You right click on the toolbox and choose "Customize" , you will have a dialog that lets you browse to the assembly of your control .

An error when adding a user control to the project

I created a UserControl in my project. After that I change it to be inherited from combobox instead of UserControl -
public partial class EprComboBoxControl : System.Windows.Forms.ComboBox
Then I build the project and that control appears in the tool box. Then I created a new windows from and add the item from tool box. When I am adding the control it says an error as follows.
failed to load the toolbox item 'EprComboBoxControl'.It will be removed from the tool box.
I am using VS 2005

Try to add application exe in toolbox item.
Or
Create instance of control and use.
Please follow this for more reference.

Can I use a UserControl from the same project without making a DLL?

I made a User Control and already was able to use it by adding it to a form in the C# code. The User Control is in the same VS2005 Project as the main form.
The problem is that I can't see the User Control in the gui editor ([Design] window) with this implementation. I tried many things but I wasn't able to add the user control to the real form desing.
I read some things about making a control lib dll and then add this dll to the toolbox but I don't want to have an additional project and an additional binary file.
How can I use a User Control in an form Design, if both are in the same VS Project? I think somehow this should be possible?
Edit 1:
Sorry I have Visual Studio 2005 not 2010

It's certainly possible to use a UserControl in design mode when it's part of the same project.
Do note, however, that it will only show up in your toolbox if you have enabled the "AutoToolboxPopulate" setting. Go to the "Tools" menu and select "Options". Expand "Windows Forms Designer", and click on "General". Make sure that the "AutoToolboxPopulate" property is set to True. When you rebuild your solution, your UserControl should show up at the top of your toolbox, ready to add to your form.
Alternatively, you can add the UserControl to your toolbox manually. To do that, right-click on your toolbox and select "Choose Items" from the context menu. Navigate to your control, ensure that it is checked in the list, and click "OK".
In the event that an exception is thrown (like MacX mentioned), you will still be notified by the designer. The control will still show up in the toolbox, and you'll still be able to attempt to add it to your form.

As APShredder already mentioned the control should automatically appear in the toolbox. If it doesn't check your Visual Studio Settings:
Tools - Options - Windows Forms Designer - General - AutoToolboxPopulate - True
For further informations just read the Walkthrough in the MSDN.

You should be able to use a custom User Control in the Winforms designer. You have to build your project first however. You can do this by going to Build --> Build Solution or by pressing F6. Then your control should appear in the Toolbox.

Yes, in the toolbox, right-click and choose "Choose items...". Then navigate to the ".NET Framework Components" - your controls should be listed in there. Just choose to add them.

There should be no Problem with the Control, except you have an exception which is thrown within the constructor or the Load-Event. The the Designer is not able to display the control correctly.

In VS2010 after you create a User Control and compiled it, VS add automatically your component and make it visibile in his namespace on ToolBar.
This can be done in Both WPF and old style code/Components...

C# Custom Control doesn't show up in the toolbox

I have created the custom control which is just a panel that I will be using to render my DirectX code. However, I am unable to see the control in my toolbox for when I try to add it into the designer. I right clicked on my project then clicked on add new item. From there I clicked on custom control, renamed it to CustomPanel, and placed my code in it. I tried everything from restarting VS to deleting and creating a new custom control. Is there anything that I am missing? This is being done in Visual Studio 2005.

Right click the Toolbox, then Choose items and browse for the .dll file that contains your control. The Toolbox will add all the components found in that dll. Also check in Tools -> Options -> Windows Forms Designer if the AutoToolboxPopulate setting is set to true.

Is the control class public ? The default template creates an internal class.
Is there a public parameterless constructor ? The designer needs it.

Did you right click on the toolbox and click "Choose Items", and then browse to the built assembly that contains your custom control?
That's what I always have to do, and then my custom controls show up in the "General" section of the toolbox.

C# custom control will automatically populate once you build the project in which it is created & add reference of that project to the project having Form which needs that custom control.
Faced the same problem myself. Once dll is made for that project and included using add references in the project you want its use, It is sure to see it in Toolbox.

and check that you mustn't stay in the custom control's designer window.