如何在类的数组中设置类值

我正在使用Visual Studio创建一个Windows Forms C#项目，并试图设置一个类型类的数组，并使数组中的条目与该类的构造函数字符串相对应。我使用的是一个带有变量索引的数组，每当向数组中添加新的类实例时，索引就会增加。

我遇到了索引调用超出数组范围的问题。此外，我不确定是否为每个实例设置了类变量。有人能给我指正确的方向吗？以下是我的代码：

public partial class MainMenu : Form
{
    //int that will be used to alter the index of the array
    public static int acctcount = 1;
    //array of class Account
    Account[] accounts = new Account[acctcount];
    public MainMenu()
    {
        InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
        //check through each element of the array
        for (int i = 0; i < accounts.Length; i++)
        {
            string stringToCheck = textBox1.Text;
            foreach(Account x in accounts)
            {
                //check to see if entered name matches any element in the array
                if (x.Name == stringToCheck)
                {
                    //set variables in another form so that we are using the class variables for only that class
                    Variables1.selectedAccount = x.Name;
                    //is this calling the CheckBalance of the instance?
                    Variables1.selectedCheckBalance = Account.CheckBalance;
                    //same thing?
                    Variables1.selectedSaveBalance = Account.SaveBalance;
                    //switch to form
                    AccountMenu acctMenu = new AccountMenu();
                    this.Hide();
                    acctMenu.Show();
                }
                else
                {
                    /*insert new instance of Account
                    the index element should be 0, since acctcount is set to 1
                    and we are subtracting 1 from the acctcount
                     we are using the string from the textbox1.Text as the constructor
                     for the new instance*/
                    accounts [acctcount-1] = new Account(stringToCheck);
                    //increase the index of the array by 1
                    acctcount += 1;
                }
            }
        }
    }
}
class Account
{
    private string name;
    public string Name
    {
        get
        {
            return name;
        }
        set
        {
            name = value;
        }
    }
    private static int acctNum = 0;
    public static int AcctNumber
    {
        get
        {
            return acctNum;
        }
        set
        {
            acctNum = value;
        }
    }
    //initialize the CheckBalance value to 100.00
    private static decimal checkBalance = 100.00M;
    public static decimal CheckBalance
    {
        get
        {
            return checkBalance;
        }
        set
        {
            checkBalance = value;
        }
    }
    public Account(string Name)
    {
        this.Name = Name;
    }
    private static decimal saveBalance = 100.00M;
    public static decimal SaveBalance
    {
        get
        {
            return saveBalance;
        }
        set
        {
            saveBalance = value;
        }
    }
}