public static void ImportFromExcel <T>(string fileName) where T : class
{
string extension = Path.GetExtension(fileName);
if (String.Compare(extension, ".xls", true) != 0 &&
String.Compare(extension, ".xlsx", true) != 0)
{
NLogger.Instance.WriteString(LogType.Error, "Error Opening File:" + fileName);
return;
}
// 打开Excel文件
using (ExcelManager em = new ExcelManager())
{
em.Open(fileName);
// 遍历所有的sheet
List <string> sheetNames = em.SheetNames;
foreach (string sheet in sheetNames)
{
em.ActivateSheet(sheet);
// 建立头
Dictionary <string, int> ColumnMaps = new Dictionary <string, int>();
for (int index = 1; index < int.MaxValue; ++index)
{
string CellAddress = ExcelManager.ConvertToCellName(index) + "1";
string value = em.GetValue(CellAddress, Category.Formatted) as string;
if (string.IsNullOrEmpty(value))
{
break;
}
ColumnMaps.Add(value, index);
}
if (ColumnMaps.Count == 0)
{
break;
}
// 读取表格内容
Type objType = typeof(T);
// 迭代所有的行
for (UInt32 row = 2; row < UInt32.MaxValue; ++row)
{
// 约定第一行和第一列为必填内容
string CellAddress = ExcelManager.ConvertToCellName(1) + row.ToString();
string value = em.GetValue(CellAddress, Category.Formatted) as string;
if (string.IsNullOrEmpty(value))
{
break;
}
// 构造新的对象
T info = (T)Activator.CreateInstance(objType, new object[] { value });
// 反射所有属性，解析并设置属性的值
foreach (PropertyInfo propInfo in objType.GetProperties())
{
object[] attributes = propInfo.GetCustomAttributes(true);
if (attributes == null)
{
continue;
}
foreach (Attribute att in attributes)
{
TitleMapper fromCell = att as TitleMapper;
int column = 0;
if (fromCell != null &&
ColumnMaps.TryGetValue(fromCell.TitleName, out column))
{
CellAddress = ExcelManager.ConvertToCellName(column) + row.ToString();
string CellValue = em.GetValue(CellAddress, Category.Formatted) as string;
ConvertStringToPropertyValue(propInfo, info, CellValue);
}
}
}
}
}
}
}