C# と VB.NET の質問掲示板

ちょっとしたアイデアでしかありませんが、DataGridViewにBindするデータにFilterをかけるのではいかがでしょうか。
こんな感じです。RowFilterはStringなので、生成方法を考えれば希望される動作はしそうですが。


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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        private DataSet data = new DataSet();

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            DataTable table = data.Tables.Add("data");
            table.Columns.Add("number", System.Type.GetType("System.UInt32"));
            DataRow row;
            row = table.NewRow();  row["number"] = 1;   table.Rows.Add(row);
            row = table.NewRow();  row["number"] = 2;   table.Rows.Add(row);
            row = table.NewRow();  row["number"] = 5;   table.Rows.Add(row);
            row = table.NewRow();  row["number"] = 6;   table.Rows.Add(row);
            row = table.NewRow();  row["number"] = 9;   table.Rows.Add(row);

            dataGridView1.DataSource = table;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            DataTable gridTable = (DataTable)dataGridView1.DataSource;
            gridTable.DefaultView.RowFilter = "number NOT IN (2, 5)";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            DataTable gridTable = (DataTable)dataGridView1.DataSource;
            if (gridTable.DefaultView.RowFilter != "")
            {
                gridTable.DefaultView.RowFilter = "(" + gridTable.DefaultView.RowFilter + ") and (number NOT IN (1, 9))";
            }
            else
            {
                gridTable.DefaultView.RowFilter = "(number NOT IN (1, 9))";
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            DataTable gridTable = (DataTable)dataGridView1.DataSource;
            gridTable.DefaultView.RowFilter = "";
        }
    }
}