public Form1()
{InitializeComponent();// create sequence Item[] items = new Item[] { new Book{Id = 1, Price = 13.50, Genre = "Comedy", Author = "Jim Bob"}, new Book{Id = 2, Price = 8.50, Genre = "Drama", Author = "John Fox"},  new Movie{Id = 1, Price = 22.99, Genre = "Comedy", Director = "Phil Funk"},new Movie{Id = 1, Price = 13.40, Genre = "Action", Director = "Eddie Jones"}};var query = from i in itemsorderby i.Priceselect i;DataTable table = query.CopyToDataTable();BindingSource source = new BindingSource();source.DataSource = table;foreach (DataColumn col in table.Columns){DataGridViewAutoFilterTextBoxColumn commonColumn = new DataGridViewAutoFilterTextBoxColumn();commonColumn.DataPropertyName = col.ColumnName;commonColumn.HeaderText = col.ColumnName;commonColumn.Resizable = DataGridViewTriState.True;this.dataGridView1.Columns.Add(commonColumn);}            this.dataGridView1.DataSource = source;
}

private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{int iCount = this.dataGridView1.SelectedRows.Count;this.toolStripStatus_SelectedRows.Text = string.Format("{0} row{1} selected", iCount.ToString(), iCount > 1 ? "s" : "");
}private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{BindingSource data = this.dataGridView1.DataSource as BindingSource;if (data == null || data.DataSource == null){return;}/* Show total records number*/// Retrieve the unfiltered row count by // temporarily unfiltering the data.data.RaiseListChangedEvents = false;String oldFilter = data.Filter;data.Filter = null;int iTotalNum = data.Count;this.toolStripStatus_Total.Text = string.Format("Total of {0} record{1}.", iTotalNum.ToString(), iTotalNum > 1 ? "s" : "");data.Filter = oldFilter;data.RaiseListChangedEvents = true;/* Show filter information.*/int iFilterNum = data.Count;string filter = data.Filter;if (String.IsNullOrEmpty(filter)){this.toolStripStatus_Separator2.Visible = false;this.toolStripStatus_Filter.Visible = false;this.toolStripStatus_ShowAll.Visible = false;}else{this.toolStripStatus_Separator2.Visible = true;this.toolStripStatus_Filter.Visible = true;this.toolStripStatus_ShowAll.Visible = true;this.toolStripStatus_Filter.Text = string.Format("{0} record{1} found.", iFilterNum.ToString(), iFilterNum > 1 ? "s" : "");this.toolStripStatus_Filter.Text += " (Filter: " + filter + ")";}
}private void toolStripStatus_ShowAll_Click(object sender, EventArgs e)
{DataGridViewAutoFilterColumnHeaderCell.RemoveFilter(this.dataGridView1);
}

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