public Control AddressOutput {get; set;}

//  Please use the following namespace
//  using System.Windows.Forms;
//  using GrapeCity.Win.Editors;

public void CustomizeGcPostal()
{
    // Creates an instance of a GcPostal control.
    GcPostal gcPostal1 = new GcPostal();
    TextBox textBox1 = new TextBox();
    TextBox textBox2 = new TextBox();
    TextBox textBox3 = new TextBox();
    TextBox textBox4 = new TextBox();
    DataGridView dataGridView1 = new DataGridView();

    // Sets the QueryMode property.
    // The input zipcode number will be converted to half width to display in the Fields.
    gcPostal1.ZipCodeCharType = ZipCodeCharType.HalfWidthDigit;

    // Sets the QueryMode property.
    // The input zipcode can't be use general zipcode or company zipcode to search.
    gcPostal1.QueryMode = ZipCodeQueryMode.Both;

    // Sets the GenerateCompanyAddressKana property.
    // The query result for the company data will contains the reading kana for the prefecture, city and town
    gcPostal1.GenerateCompanyAddressKana = true;

    // Sets the SplitAreaDetails property.
    // Split area information contained in the town as independent Area information
    gcPostal1.SplitAreaDetails = false;

    gcPostal1.TextChanged += delegate
    {
        // all searched result will be displayed in the DataGridView control.
        dataGridView1.DataSource = gcPostal1.Addresses;
    };

    // Sets the AddressOutput property.
    // The searched first address information will be output to Text property of textBox1 control.
    gcPostal1.AddressOutput = textBox1;

    // Sets the AddressKanaOutput property.
    // The searched first address kana information will be output to Text property of textBox2 control.
    gcPostal1.AddressKanaOutput = textBox2;

    // The searched first address information will be contained in PostalAddressOutputtingEventArgs.
    gcPostal1.AddressOutputting += delegate(object sender, PostalAddressOutputtingEventArgs e)
    {
        textBox3.Text = e.OutputAddress;
        textBox4.Text = e.OutputAddressKana;
    };
}