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    在DevExpress GridView里面需要呈现图片，图片在数据库里面储存的是文件名。

    如果大家想要使用PictureEdit来呈现，那么下面是一个小技巧：

    1. 新建一个FieldName为Image的column；

    2. UnBoundType选择Object，ColumnEdit使用PictureEdit；

    3. 通过 gridView1_CustomUnboundColumnData来实现。具体代码如下：

 string _imageDir = @"Photos\";
 
        Hashtable _images = new Hashtable();
 
        private void gridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e)
        {
            if (e.Column.FieldName == "Image" && e.IsGetData)
            {
 
                GridView view = sender as GridView;
 
 
 
                string fileName = (string)view.GetRowCellValue(e.ListSourceRowIndex, "PhotoPath");
 
             
 
                if (!_images.ContainsKey(fileName))
                {
 
                    Image img = null;
 
                    try
                    {
                        string filePath = DevExpress.Utils.FilesHelper.FindingFileName(Application.StartupPath, _imageDir + fileName, false);
 
                        img = Image.FromFile(filePath);
 
                    }
                        string filePath = DevExpress.Utils.FilesHelper.FindingFileName(Application.StartupPath, _imageDir + fileName, false);
 
                        img = Image.FromFile(filePath);
 
                    }
 
                    catch
                    {
 
                    }
 
                    _images.Add(fileName, img);
 
                }
 
                e.Value = _images[fileName];
 
            }
 
        }

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