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 WindowsFormsApplication1
{
    public partial class FrmLogin : Form
    {
        public LoginInfo[] array;
        public FrmLogin()
        {
            InitializeComponent();
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {

        }

        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            FrmRegist fr = new FrmRegist();
            fr.Show();
        }

        private void FrmLogin_Load(object sender, EventArgs e)
        {
             array=new LoginInfo[10];
             LoginInfo info1 = new LoginInfo();
             info1.Name = "孙丽丽";
             info1.Id = "120185198005088521";
             info1.Email = "lili@;
             info1.Password="lili1980";
             array[0] = info1;

             LoginInfo info2 = new LoginInfo();
             info2.Name = "郑福疆";
             info2.Id = "120185198005088522";
             info2.Email = "fujiang@;
             info2.Password = "fujiang1997";
             array[1] = info2;

             LoginInfo info3 = new LoginInfo();
             info3.Name = "罗鹏";
             info3.Id ="120185199601068522";
             info3.Email = "luopeng@;
             info3.Password = "luopeng1996";
             array[2] = info3;

           
        }
        private void btnLogin_Click(object sender, EventArgs e)
        {
            if (txtEmail.Text.Trim() == "" || txtpwd.Text.Trim() == "")
            {
                MessageBox.Show("用户名或密码不能为空！", "提示");
            }
            else
            {
                string pwd = this.txtpwd.Text;
                string UserName = this.txtEmail.Text;
                bool isOK = false;
                foreach (LoginInfo item in array)
                {
                    if (item != null)
                    { 
                        if(item.Email==UserName && item.Password==pwd)
                        {
                           
                            isOK = true;
                            FrmMain FM = new FrmMain();
                            FM.lblName.Text = "欢迎" + item.Name;
                            FM.Show();
                            break;
                        }
                    }
                }
                if (isOK == false)
                {
                    txtpwd.Text = "";
                    txtpwd.Focus();
                }
            }
        }

    }
}
====================================
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 WindowsFormsApplication1
{
    public partial class FrmRegist : Form
    {
        public FrmRegist()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        public FrmLogin f1;
        private void button1_Click(object sender, EventArgs e)
        {
            string Name= this.txtName.Text;
            string ID = this.txtId.Text;
            string Email = this.txtEmail.Text;
            string password = this.txtpassword.Text;
            string Pow =this.txtpow.Text;
            string EM = this.txtEm.Text;
            if(txtName.Text.Trim()=="" || txtId.Text.Trim()==""
                || txtEmail.Text.Trim()=="" ||txtpassword.Text.Trim()==""
                ||txtEm.Text.Trim()==""||txtpow.Text.Trim()=="")
            {
                MessageBox.Show("注册各项信息不得为空","提示");
            }
            else if (txtEmail.Text.Trim() != txtEm.Text.Trim()
                    || txtpassword.Text.Trim() != txtpow.Text.Trim())
            {
                MessageBox.Show("两次输入邮箱地址及密码必须相同", "提示");
            }
            else
            {
                MessageBox.Show("恭喜，通过验证！","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
            LoginInfo info=new LoginInfo();
            info.Name=Name;
            info.Id=ID;
            info.Email=Email;
            info.Password=password;
            for (int i = 0; i < f1.array.Length;i++ )
            {
                if (f1.array[i] == null)
                {
                    f1.array[1] = info;
                    break;
                }
            }
            f1.Visible = true;
            this.Close();
        }
    }
}
我是新手，运行不了，错误信息显示：可访问性不一致   我好想两边都用的public啊 就是想把二段代码中的数据放入到 第一段中的数组中去   求大神指点