using System.Windows.Forms;
using Syncfusion.Windows.Forms.Tools;

public partial class Form1 : Form
{
    private CurrencyTextBox currencyTextBox1;
    
    public Form1()
    {
        InitializeComponent();
        
        // Create and configure CurrencyTextBox
        currencyTextBox1 = new CurrencyTextBox();
        currencyTextBox1.Location = new System.Drawing.Point(10, 10);
        currencyTextBox1.Size = new System.Drawing.Size(200, 25);
        
        // Set currency format
        currencyTextBox1.CurrencySymbol = "$";
        currencyTextBox1.CurrencyDecimalDigits = 2;
        currencyTextBox1.CurrencyGroupSeparator = ",";
        currencyTextBox1.CurrencyGroupSizes = new int[] { 3 };
        
        // Set value constraints
        currencyTextBox1.MaxValue = 999999.99m;
        currencyTextBox1.MinValue = 0m;
        currencyTextBox1.DecimalValue = 100.00m;
        
        // Set colors for value states
        currencyTextBox1.PositiveColor = System.Drawing.Color.Black;
        currencyTextBox1.NegativeColor = System.Drawing.Color.Red;
        currencyTextBox1.ZeroColor = System.Drawing.Color.Gray;
        
        this.Controls.Add(currencyTextBox1);
    }
}

// For collecting currency amounts (payments, invoices, etc.)
currencyTextBox.MaxValue = decimal.MaxValue;
currencyTextBox.MinValue = 0m;
currencyTextBox.CurrencySymbol = "$";
currencyTextBox.CurrencyDecimalDigits = 2;
currencyTextBox.AllowNull = false;

// Color-code by sign (green for profit, red for loss)
currencyTextBox.PositiveColor = System.Drawing.Color.Green;
currencyTextBox.NegativeColor = System.Drawing.Color.Red;
currencyTextBox.MaxValue = decimal.MaxValue;
currencyTextBox.MinValue = decimal.MinValue;

// Allow null values with custom placeholder text
currencyTextBox.AllowNull = true;
currencyTextBox.NullString = "(Not Specified)";
currencyTextBox.Text = "";

// Handle KeyDown event to add multiplier shortcuts
private void currencyTextBox1_KeyDown(object sender, KeyEventArgs e)
{
    decimal value = currencyTextBox1.DecimalValue;
    switch(e.KeyCode)
    {
        case Keys.G: // Giga (billion)
            currencyTextBox1.DecimalValue = value * 1000000000m;
            break;
        case Keys.M: // Mega (million)
            currencyTextBox1.DecimalValue = value * 1000000m;
            break;
        case Keys.K: // Kilo (thousand)
            currencyTextBox1.DecimalValue = value * 1000m;
            break;
    }
}