如何在表单上放置图片?

据我所知,数据库中有一列,其数据是表示图像路径的字符串。您正在将PictureEdit指定为列的就地编辑器。如果是这样,建议使用未绑定列的方法,因为PictureEdit编辑器无法通过将字符串路径设置为编辑器的值来显示图像:

void gridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {
    GridView view = sender as GridView;
    if(e.Column.FieldName == "Image" && e.IsGetData) {
        string fileName = view.GetRowCellValue(view.GetRowHandle(e.ListSourceRowIndex), "ImagePath");
        e.Value = /* get image from cache by filename or load image from file and add to cache */
    }
}  

看看 How to display external images in Grid if its data source contains links to the images 示例以查看此方法的实际应用。