Windows Forms

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at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.EnsureDocument(IDesignerSerializationManager manager)
at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
at System.ComponentModel.Design.Serialization.BasicDesignerLoader.BeginLoad(IDesignerLoaderHost host) 

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics.CodeAnalysis;
using System.Diagnostics;

namespace MyProject.Gui.Docking
{
	public class DockContent : Form, IDockContext
	{
		public DockContent()
		{
            InitializeComponent();

			//...
		}

//...
	}
}

using System;
using MyProject.Gui.Docking;
using MyProject.Core;

namespace MyProject.Gui.Windows
{
    public partial class ToolWindow : DockContent
    {
        public ToolWindow()
        {
            InitializeComponent();
        }

...
    }
}

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);

public const int MOUSEEVENTF_LEFTDOWN = 0x02;
public const int MOUSEEVENTF_LEFTUP = 0x04;
public const int MOUSEEVENTF_RIGHTDOWN = 0x08;
public const int MOUSEEVENTF_RIGHTUP = 0x10;

public void MouseClick()
{
int x = 100;
int y = 100;

mouse_event(MOUSEEVENTF_LEFTDOWN, x, y, 0, 0);
mouse_event(MOUSEEVENTF_LEFTUP, x, y, 0, 0);
}

	[DllImport("user32.dll", CallingConvention=CallingConvention.StdCall, SetLastError=true)]
	public static extern IntPtr SendInput(int count, ref INPUT2 input, int size);

	[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, SetLastError = true)]
	public static extern IntPtr SetCursorPos(int x, int y);

	public struct MOUSEINPUT {
		public int dx;
		public int dy;
		public int mouseData;
		public int dwFlags;
		public int time;
		public IntPtr dwExtraInfo;
	}

	public struct INPUT2 {
		public uint type1;
		public MOUSEINPUT mi1;
		public uint type2;
		public MOUSEINPUT mi2;
	}

mirzamujib wrote:

The variable TextBox1 is either undeclared or was never assigned