C# dataGridView显示图片

核心代码如下：
DataGridViewImageColumn img = new DataGridViewImageColumn();
img.HeaderText = "是否确认";
img.Width = 80;
this.dataGridView1.Columns.Insert(3, img);
for (int i = 0; i < this.dataGridView1.Rows.Count; i++)
{
if (this.dataGridView1.Rows[i].Cells["确认"].Value.ToString().ToLower().Trim() == "true")
{
this.dataGridView1[3, i].Value = Image.FromFile("check.gif");
}
else
{
this.dataGridView1[3, i].Value = Image.FromFile("feedback.gif");
}
}