DataGridView中的CheckBox值始终为真

// 添加CheckBox列
DataGridViewCheckBoxColumn checkBoxColumn = new DataGridViewCheckBoxColumn();
checkBoxColumn.HeaderText = "选择";
checkBoxColumn.Name = "checkBoxColumn";
checkBoxColumn.ReadOnly = false;
dataGridView1.Columns.Add(checkBoxColumn);

// 设置CellFormatting事件
dataGridView1.CellFormatting += DataGridView1_CellFormatting;

// 设置CellContentClick事件
dataGridView1.CellContentClick += DataGridView1_CellContentClick;

// CellFormatting事件处理方法
private void DataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    if (e.ColumnIndex == dataGridView1.Columns["checkBoxColumn"].Index && e.RowIndex >= 0)
    {
        DataGridViewCheckBoxCell cell = dataGridView1.Rows[e.RowIndex].Cells["checkBoxColumn"] as DataGridViewCheckBoxCell;
        if (cell != null)
        {
            // 设置CheckBox列的值为对应数据源中的值
            cell.Value = dataGridView1.Rows[e.RowIndex].Cells["YourDataPropertyName"].Value;
        }
    }
}

// CellContentClick事件处理方法
private void DataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    if (e.ColumnIndex == dataGridView1.Columns["checkBoxColumn"].Index && e.RowIndex >= 0)
    {
        DataGridViewCheckBoxCell cell = dataGridView1.Rows[e.RowIndex].Cells["checkBoxColumn"] as DataGridViewCheckBoxCell;
        if (cell != null)
        {
            // 修改数据源中对应行的值来改变CheckBox的值
            bool currentValue = (bool)cell.Value;
            dataGridView1.Rows[e.RowIndex].Cells["YourDataPropertyName"].Value = !currentValue;
        }
    }
}