Memory class - Updated Jorndels.

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

class MemoryClass_Eithan_Jorndel
{
    //Credits:
    //Jorndel < Created original class
    //Me < Edited it a lot. Added new fetures
    //SamTheDope < Being dope

    #region -----Main-----
    //Dll Inports
    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern bool VirtualProtectEx(IntPtr hProcess, IntPtr lpAddress, UInt32 dwSize, uint flNewProtect, out uint lpflOldProtect);

    [DllImport("kernel32.dll")]
    private static extern Int32 ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesWritten);

    [DllImport("kernel32.dll")]
    private static extern Int32 WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesWritten);

    //Storing ProcessName
    IntPtr pHandel;
    Process attachedProcess = null;

    //Attching process
    public bool Process_Handle(string ProcessName)
    {
        try
        {
            Process[] ProcList = Process.GetProcessesByName(ProcessName);
            if (ProcList.Length == 0)
                return false;
            else
            {
                attachedProcess = ProcList[0];
                pHandel = ProcList[0].Handle;
                return true;
            }
        }
        catch (Exception ex) { SetLastError(ex); return false; }
    }

    #endregion
    #region 32 bit
    #region Basic Stuff
    private byte[] Read32(int Address, int Length)
    {
        byte[] Buffer = new byte[Length];
        IntPtr Zero = IntPtr.Zero;
        ReadProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
        return Buffer;
    }

    private void Write32(int Address, int Value)
    {
        byte[] Buffer = BitConverter.GetBytes(Value);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    #endregion
    #region Write Functions
    public void WriteDouble32(int Address, double value)
    {
        byte[] Buffer = BitConverter.GetBytes(value);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    public void WriteInteger(int Address, int Value)
    {
        Write32(Address, Value);
    }

    public void WriteString32(int Address, string Text)
    {
        byte[] Buffer = new ASCIIEncoding().GetBytes(Text);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    public void WriteBytes32(int Address, byte[] Bytes)
    {
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Bytes, (uint)Bytes.Length, out Zero);
    }

    public void WriteNOP32(int Address, int nopLength)
    {
        byte[] Buffer = new byte[nopLength];
        for (int i = 0; i < nopLength; i++)
            Buffer[i] = (byte)0x90;
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    private void WriteFloat32(int Address, float Value)
    {
        byte[] Buffer = BitConverter.GetBytes(Value);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    public void WriteFloat_Protected32(int Address, float Value)
    {
        uint OldProtection;
        VirtualProtectEx(pHandel, (IntPtr)Address, (uint)sizeof(float), 0x40, out OldProtection);
        WriteFloat32(Address, Value);
        VirtualProtectEx(pHandel, (IntPtr)Address, (uint)sizeof(float), OldProtection, out OldProtection);
    }
    #endregion
    #region Read Functions
    public int ReadInteger32(int Address, int Length = 4)
    {
        return BitConverter.ToInt32(Read32(Address, Length), 0);
    }

    public float ReadFloat32(int address)
    {
        return BitConverter.ToSingle(ReadBytes32(address, 8), 0);
    }

    public string ReadString32(int Address, int Length = 4)
    {
        return new ASCIIEncoding().GetString(Read32(Address, Length));
    }

    public byte[] ReadBytes32(int Address, int Length)
    {
        return Read32(Address, Length);
    }

    public double ReadDouble32(int address)
    {
        byte[] buffer = new byte[sizeof(double)];
        IntPtr Zero = IntPtr.Zero;
        ReadProcessMemory(pHandel, (IntPtr)address, buffer, (UInt32)buffer.Length, out Zero);
        return BitConverter.ToDouble(buffer, 0);
    }
    #endregion
    #region Advance
    //Don't use hex
    //Example: PatternScanXX("0 255 212 53 ?? 53 74 ?? 86 ?? ?? 12 ??")
    public int PatternScan32(string pattern, bool mainModule = true)
    {
        string[] splitPattern = pattern.Split(' ');
        bool[] indexValid = new bool[splitPattern.Length];
        byte[] indexValue = new byte[splitPattern.Length];

        byte tempByte = (byte)0x00;

        for (int i = 0; i < splitPattern.Length; i++)
        {
            indexValid[i] = !(splitPattern[i] == "??" || splitPattern[i] == "?");
            if (Byte.TryParse(splitPattern[i], out tempByte))
                indexValue[i] = tempByte;
            else
                indexValid[i] = false;
        }


        //searching memory part
        int startOfMemory = 0;
        int endOfMemory = 0;

        if(mainModule)
        {
            startOfMemory = attachedProcess.MainModule.BaseAddress.ToInt32();
            endOfMemory = attachedProcess.MainModule.ModuleMemorySize;
        }
        else
        {
            for (int i = 0; i < attachedProcess.Modules.Count; i++)
                endOfMemory += attachedProcess.Modules[i].ModuleMemorySize;
        }

        for (int currentMemAddy = startOfMemory; currentMemAddy < endOfMemory; currentMemAddy++)
        {
            bool complete = false;
            for (int i = 0; i < splitPattern.Length; i++)
            {
                if (!indexValid[i])
                    continue;

                tempByte = ReadBytes32(currentMemAddy + i, 1)[0];

                if (tempByte != indexValue[i])
                    break;

                if (i == splitPattern.Length - 1)
                    complete = true;

                if (complete)
                    break;
            }

            if (complete)
                return currentMemAddy;
        }

        throw new Exception("Pattern not found!");
        return 0;
    }
    #endregion
    #endregion
    #region 64 Bit
    #region Basic Stuff
    private byte[] Read64(long Address, int Length)
    {
        byte[] Buffer = new byte[Length];
        IntPtr Zero = IntPtr.Zero;
        ReadProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
        return Buffer;
    }

    private void Write64(long Address, int Value)
    {
        byte[] Buffer = BitConverter.GetBytes(Value);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    #endregion
    #region Write Function
    public void WriteInteger64(long Address, int Value)
    {
        Write64(Address, Value);
    }

    public void WriteString64(long Address, string Text)
    {
        byte[] Buffer = new ASCIIEncoding().GetBytes(Text);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    public void WriteBytes64(long Address, byte[] Bytes)
    {
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Bytes, (uint)Bytes.Length, out Zero);
    }

    public void WriteNOP64(long Address)
    {
        byte[] Buffer = new byte[] { 0x90, 0x90, 0x90, 0x90, 0x90 };
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    public void WriteFloat64(long Address, float Float)
    {
        byte[] Buffer = BitConverter.GetBytes(Float);
        IntPtr Zero = IntPtr.Zero;
        WriteProcessMemory(pHandel, (IntPtr)Address, Buffer, (UInt32)Buffer.Length, out Zero);
    }

    #endregion
    #region Read Functions
    public int ReadInteger64(long Address, int Length = 4)
    {
        return BitConverter.ToInt32(Read64(Address, Length), 0);
    }

    public string ReadString64(long Address, int Length = 4)
    {
        return new ASCIIEncoding().GetString(Read64(Address, Length));
    }

    public byte[] ReadBytes64(long Address, int Length)
    {
        return Read64(Address, Length);
    }

    #endregion
    #endregion
    #region Advanced
    /// <summary>
    /// This will read the hole string until it's ended.
    /// Notes:
    /// This isn't the fastest method
    /// </summary>
    /// <param name="offset"></param>
    /// <returns></returns>
    public string ReadString_Advanced32(int offset)
    {
        string output = null;

        int i = 0;
        while (true)
        {
            byte[] currentByteRead = ReadBytes32(offset + i, 1);
            char currentCharRead = Encoding.ASCII.GetChars(currentByteRead)[0];

            //Check is valid char
            if (IsValidChar(currentCharRead))
                output += currentCharRead.ToString();
            else
                break;

            i++;

            if (i > 10000)//You need some sort of limit
                break;
        }

        return output;
    }

    /// <summary>
    /// This will read the hole string until it's ended.
    /// Notes:
    /// This isn't the fastest method
    /// </summary>
    /// <param name="offset"></param>
    /// <returns></returns>
    public string ReadString_Advanced64(long offset)
    {
        string output = null;

        int i = 0;
        while (true)
        {
            byte[] currentByteRead = ReadBytes64(offset + i, 1);
            char currentCharRead = Encoding.ASCII.GetChars(currentByteRead)[0];

            //Check is valid char
            if (IsValidChar(currentCharRead))
                output += currentCharRead.ToString();
            else
                break;

            i++;

            if (i > 10000)
                break;
        }

        return output;
    }
    #endregion


    #region Misc
    #region Error Handling
    private string lastError = null;

    public string GetLastError()
    {
        return lastError;
    }

    private void SetLastError(string error)
    {
        lastError = error;
    }

    private void SetLastError(Exception error)
    {
        lastError = error.ToString();
    }
    #endregion
    #region Char Checks - Used for "ReadString_Advanced"
    char[] validCharList = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*()_+-=` ".ToArray();//All the valid ascii chars I could think of

    private bool IsValidChar(char toCheckVar)
    {
        toCheckVar = ((toCheckVar.ToString()).ToLower()).ToCharArray()[0];
        for (int i = 0; i < validCharList.Length; i++)
            if (toCheckVar == validCharList[i])
                return true;
        return false;
    }
    #endregion
    #endregion
}