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private void demoGrid_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (demoGrid.Columns[e.ColumnIndex].Name.Equals("Image"))
{
string path = System.Windows.Forms.Application.StartupPath + @"/1.gif";
e.Value = GetImage(path);
}
}
public System.Drawing.Image GetImage(string path)
{
System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Open);
System.Drawing.Image result = System.Drawing.Image.FromStream(fs);
fs.Close();
return result;
}
// 全局变量,储存图片
private SortedDictionary<string, Image> slist = new SortedDictionary<string, Image>();
private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (e.ColumnIndex == 显示图片列的索引)
{
if (e.Value is string)
{
// 图片路径
var key = (string)e.Value;
Image img;
// 保存在全局变量中,避免重复加载
if (!slist.TryGetValue(key, out img))
{
img = Image.FromFile(key);
slist.Add(key, img);
}
e.Value = img;
e.FormattingApplied = true;
}
}
}