using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Collections.Generic;

namespace GrapeCity.Win.MultiRow.SampleCode
{
    public class DataBindingDemo : Form
    {
        private GcMultiRow gcMultiRow1 = new GcMultiRow();

        public DataBindingDemo()
        {
            this.Text = "DataBinding Demo";

            // Add MultiRow to form
            this.gcMultiRow1.Dock = DockStyle.Fill;
            this.Controls.Add(this.gcMultiRow1);

            this.Load += new EventHandler(Form1_Load);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            InitializeDataSource();

            // The following to lines code can be instead by:
            // this.gcMultiRow1.DataSource = studentInfoDataSet.Tables["BasicInfos"];
            this.gcMultiRow1.DataSource = studentInfoDataSet;
            this.gcMultiRow1.DataMember = "BasicInfos";

            // When data binding, the cells in template should be set DataField property to binding a specific column of data source.
            this.gcMultiRow1.Template = this.CreateDataBindingTamplate();

            this.gcMultiRow1.DataError += new EventHandler<DataErrorEventArgs>(gcMultiRow1_DataError);
        }

        void gcMultiRow1_DataError(object sender, DataErrorEventArgs e)
        {
            // The first id cell only can input number, if user input some invalid value, DataError event will be fired.
            // You should handle this event to handle some error cases.
            if ((e.Context & DataErrorContexts.Commit) != 0)
            {
                // When committing value occurs error, show a massage box to notify user, and roll back value.
                MessageBox.Show(e.Exception.Message);
                EditingActions.CancelEdit.Execute(this.gcMultiRow1);
            }
            else
            {
                // Other handle.
            }
        }

        Template CreateDataBindingTamplate()
        {
            TextBoxCell idCell = new TextBoxCell();

            // Binding a column of data source.
            // The value of DataField property should a exist column name in data source. 
            idCell.DataField = "ID";

            TextBoxCell nameCell = new TextBoxCell();
            nameCell.DataField = "Name";

            CheckBoxCell genderCell = new CheckBoxCell();
            genderCell.DataField = "Gender";

            Cell[] cells = new Cell[] { idCell, nameCell, genderCell };

            return Template.CreateGridTemplate(cells);
        }

        #region Initialize DataSource

        DataSet studentInfoDataSet = new DataSet();

        private void InitializeDataSource()
        {
            // For demonstration purpose, I construct a data source by code.
            // You can connect a database, and create data table or data set by ADO.net technique instead.
            // For more detail information about ADO.net, please refer to MSDN
            studentInfoDataSet.Tables.Add("BasicInfos");
            studentInfoDataSet.Tables.Add("Scores");

            // Initialize BasicInfo table. 
            DataTable basicInfos = studentInfoDataSet.Tables["BasicInfos"];

            // Initialize columns
            basicInfos.Columns.Add("ID", typeof(int));
            basicInfos.Columns.Add("Name", typeof(string));
            basicInfos.Columns.Add("Gender", typeof(bool));

            // Initialize data.
            basicInfos.Rows.Add(0, "Jim", true);
            basicInfos.Rows.Add(1, "Alice", false);
            basicInfos.Rows.Add(2, "Tom", true);

            // Omit Scores table's initializing logic here...
        }

        #endregion

        [STAThreadAttribute()]
        public static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new DataBindingDemo());
        }
    }
}