Develop Reference

Syntax Error 'Helper' does not exist in the current context

I am building a form where i can drag and drop button controls.
I followed the tutorial from this link but the code generates an error difficult for me to debug.
Syntax Error
Error code CS1030, "The name 'Helper' does not exist in the current
context
I have tried adding and removing namespaces, using System and using System.Drawing but the same error code is still present.
In a much more extensive code like the actual example, Helper.ControlMover does work, and it is very easy to use. What exactly am i missing in the code below?
Thank you for your time and help.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace MovingControls
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Helper.ControlMover.Init(this.button1);
}
}
}

The type or namespace name does not exist in the namespace (are you missing an assembly reference?)

I know that this question has been already asked, but I cannot find anything that can help solve my problem.
I want to connect my aspx page (Retete.aspx) to a Microsoft SQL database. I'm getting this error on Retete.aspx.cs:
Error 1 The type or namespace name 'GlobalClass' does not exist in the namespace 'ProiectSera' (are you missing an assembly reference?)
The error points to this line of code:
ProiectSera.GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text);
Where ProiectSera is the project name, GlobalClass is the file where I make the operation on the db.
My using statements are:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using ProiectSera;
The Target Framework is set to .net-4.5.
What should I do to solve this error?
Update
My GlobalClass.cs is:
using System;
using System.Data;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using System.IO;
using ProiectSera;
using System.Data.Services;
namespace ProiectSera.App_Code
{
public static class GlobalClass
{
static public void Update(string _param1, string _param2)
{//function to update}
}
}
App_Code is a folder where GlobalClass.cs is. I tried and
ProiectSera.App_Code.GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text); //
but I had the same error. And I put the GlobalClass.cs in the project's root. I also removed the .App_Code from namespace ProiectSera.App_Code
UPDATE1
My Retete.aspx.cs is
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using ProiectSera;
using ProiectSera.App_Code;
namespace ProiectSera
{
public partial class Retete : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSave_Click(object sender, EventArgs e)
{
string intValRefTempSol;
string intValRefTempAer;
// intValRefTempSol = ValRefTempSol.Text;
// intValRefTempAer = ValRefTempAer.Text;
// ProiectSera.App_Code.GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text);
GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text);
}
}
}

Your GlobalClass is in the namespace ProiectSera.App_Code.
So the class name is ProiectSera.App_Code.GlobalClass
Make sure you don't have a ProiectSera class in the ProiectSera namespace also, otherwise if declaring using ProiectSera on top, it'll try to use it (as a general rule, don't name any class the same as your namespace).
If that still doesn't work, you may want to try using the global namespace:
global::ProiectSera.GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text);
and see if that works: if it doesn't, and GlobalClass is in the same project, then there's something else you haven't shown us
Update
The only other thing that comes to mind, if you are positive that both files are on the same project/assembly, is that GlobalClass.cs is not being actually compiled. Make sure the Build Action is set to Compile (you can see the build action right clicking on the GlobalClass.cs in the solution explorer and selecting Properties).

If you are using VS.NET:
Right click on the References folder on your project.
Select Add Reference.
Select the .NET tab (or select the Browse button if it is not a .NET Framework assembly).
Double-click the assembly containing the namespace in the error message.
Press the OK button.

Ensure the following...
That you have a project reference to ProiectSera from your web application, if it's in a separate library. If GlobalClass is in the web application project itself, you won't require this, but if GlobalClass is defined in a separate library in the same solution or elsewhere, then you're going to need to add a reference to that external library in your web application.
Ensure that ProiectSera should not be ProjectSera (if it's a typo).
Ensure that you have your ProiectSera using statement in place at the top (using ProiectSera;). Assuming that this is the correct namespace. Check the namespace of your GlobalClass class and use that using accordingly in the class that wishes to use its functionality.
Then, simply call this in your code, assuming that Update is a static method of GlobalClass.
GlobalClass.Update(ValRefTempSol.Text, ValRefTempAer.Text);
EDIT: given that you've now posted your GlobalClass code, you can see that the namespace for this class is ProiectSera.App_Code;. So you need to have that as your using statement in the other class using ProiectSera.App_Code;. And then call it via simply GlobalClass.Update, as mentioned above.
If you don't understand how namespacing works in C#, then I recommend you check this out (https://msdn.microsoft.com/en-us/library/dfb3cx8s.aspx).

How do i get the exe file name of the second added project? EDITED

In Form1 i did this:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Diagnostics;
namespace test
{
public partial class Form1 : Form
{
WindowsFormsApplication1.Form1 f1;
public Form1()
{
InitializeComponent();
MessageBox.Show("Oops something went wrong sorry");
f1 = new WindowsFormsApplication1.Form1();
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
Where f1 is the second project i just added.
Now i added the seocnd project as a reference.
In the second project i did:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Diagnostics;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
string[] hardDrivedInfo;
string applicationFileName;
public Form1()
{
InitializeComponent();
applicationFileName = Path.GetDirectoryName(Application.ExecutablePath);
But the applicatioFileName show me the path of the exe file of the first project while i need to get the directory + file name of the second project wich is in directory: D:\C-Sharp\test\test\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
The directory of the first project is: D:\C-Sharp\test\test\test\bin\Debug\test.exe
But i need to make that applicationFileName will show: D:\C-Sharp\test\test\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
EDIT **
What i want to do is to run the first main project then after the messagebox is popup and i close it it will run the second project will copy the second project exe file to another location like D: and will run the exe file of the second project. So if i delete the first project exe file the second one on D: will keep running.

You could try using
string file = typeof(Form1).Assembly.Location;
See Assembly.Location for more information:
The location of the loaded file that contains the manifest. If the loaded file was shadow-copied, the location is that of the file after being shadow-copied. If the assembly is loaded from a byte array, such as when using the Load(Byte[]) method overload, the value returned is an empty string ("").

Your text is a bit unclear, but I'm guessing you're trying to get the name of the referenced assembly, rather than the one that started the process, right?
Try using Assembly.GetExecutingAssembly(). Then you can get the full path from the Location property.

WPF User Control Error

I've search the forum, but I coundn't find anything that quite satisfied me.
In Microsoft Visual Studio 2010, when I try to add a WPF User Control I get this error:
"Value cannot be null. Parameter name: objectType"
Then when I want to select the hosted content, I get this error :
"An error occured trying to add references for type 'PolyPuttZe.GameCanvas', or finding the type. Make sure the project references are correct."
I followed this tutorial : http://www.switchonthecode.com/tutorials/wpf-tutorial-using-wpf-in-winforms
Thanks!
EDIT:
This is the code I wrote :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.Integration;
namespace PolyPuttZe
{
public partial class Game : Form
{
public Game()
{
InitializeComponent();
}
}
}

Here's a more useful answer for the next person that has this issue - you need to create your WPF user control and build the solution first. Then open/create the form and add an Element Host and set it to your control. This is likely what the accepted answer means as starting over would work as well if you create the WPF control first.

Determining labels from another partial class/windows form

I'm bit new at this so excuse me if my question is a bit novice. I'm designing a Windows form application to basically replace an old excel spreadsheet then email system(not that its much of a system). After the forms are filled out the answers are saved in terms of public variables, which is fine since it's a small program. Im having trouble referencing my variable from another windows form. Basically, I would like to have the filled out form close and a new "review" window pop up. I'm just using labels that will be show what the value of the variable is. If it was in the same class it wouldn't be a problem but im using two different forms that are partial classes of the same namespace. A bit of code:
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace OPS_PictureLoader
{
public partial class Points_Screen : Form
{
public int DevJobStandardsTotal = 0;
And the label I would like to show a "0"(or whatever the program has added to it)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace OPS_PictureLoader
{
public partial class Review : Form
{
public Review()
{
InitializeComponent();
label14.Text = DevJobStandardsTotal;
Again, thanks and feel free to tell me Im totally wrong :D

You need to pass the instance of the first form to the second form's constructor:
public Review(Points_Screen owner)
{
InitializeComponent();
label14.Text = owner.DevJobStandardsTotal;