利用NPOI和List泛型导出Excel
具体方法不要看，这里这是一个参考
//弹出表的保存路径
private void Output_Click_1(object sender,RoutedEventArgs e)//导出方式合为一个方法体（强制转换sender）
{
if (Grid_Center.ItemsSource != null)
{
DevExpress.Xpf.Bars.BarButtonItem s =(DevExpress.Xpf.Bars.BarButtonItem)sender;
string name = s.Name;
Microsoft.Win32.SaveFileDialogsave = new Microsoft.Win32.SaveFileDialog();//有没有只取路径的控件？貌似没有
ActionResult ar = newActionResult(true, "");
switch (name)
{
case"bbiOutputXls":
save.Filter ="*.xls|.xls";
save.FileName = "文件名";
save.Title ="Export To Excel";
break;
case"bbiOutputXls_1":
save.Filter ="*.xls|.xls";
save.FileName = "文件名";
save.Title ="Export To Excel";
break;
case "bbiOutputCsv":
save.Filter ="*.csv|.csv";
save.FileName = "文件名";
save.Title ="Export To Csv";
break;
default:
break;
}
bool? result =save.ShowDialog();
if (result.Value)//点击保存
{
string path =save.FileName;
try
{
switch (name)
{
case"bbiOutputXls":
//DevExpress.XtraPrinting.XlsExportOptions options = newDevExpress.XtraPrinting.XlsExportOptions();
//GridView_Center.ExportToXls(path,options);
ar=OutToExcel(path,1);
break;
case"bbiOutputXls_1"://导出表
ar=OutToExcel(path,2);
break;
case"bbiOutputCsv":
GridView_Center.ExportToCsv(path);
break;
default:
break;
}
if (ar.IsSucceeded)
{
TopMessageBox.Show(TopDialogType.Tip, MessageBoxString.导出成功);
}
else
{
TopMessageBox.Show(TopDialogType.Tip, MessageBoxString.导出失败+ar.Message);
}
}
catch
{
TopMessageBox.Show(TopDialogType.Wrong,MessageBoxString.导出失败+ar.Message);
}
}
}
else
{
TopMessageBox.Show(TopDialogType.Warning, MessageBoxString.无数据);
}
}
//利用NOPI把数据写入内存，List泛型集合
public override ActionResultOutToExcel(string path, int flag)
{
List
if (viewList != null && viewList.Count > 0)
{
List
Agent agent = new Agent();
ActionResult ar;
if (flag == 2) //如果导出实体，则从视图转成实体
{
var q=viewList[0];
for (int i = 0; i { TEntity newEntity = newTEntity(); q = viewList[i]; ar = agent.GetByView(LoginInfo.CurrentUser.员工编号, q, outnewEntity); if (ar.IsSucceeded) { entityList.Add(newEntity); } } } List HSSFWorkbook workBook = newHSSFWorkbook(); HSSFSheet sheet =(HSSFSheet)workBook.CreateSheet("表单"); //创建列头 IRow head = sheet.CreateRow(0); for (int lie = 0; lie { ICell cellhead =head.CreateCell(lie); cellhead.SetCellValue(tf[lie].字段名称.ToString()); } int iRowIndex = 1; int iCellIndex = 0; StringBuilder Value = newStringBuilder(); double Valueint; DateTime ValuedateTime; //导出视图列表 if (flag == 1) { //行 for (int i = 0; i { IRow DataRow =sheet.CreateRow(iRowIndex); //列 for (int j = 0; j { //Rows[i].CreateCell(j).SetCellValue(strList[i]); ICell cell =DataRow.CreateCell(iCellIndex); if(viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null) == null) { Value.Append(""); cell.SetCellValue(Value.ToString()); } else { object oo =viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null).GetType(); if(oo.ToString()=="System.Decimal"||oo.ToString()=="System.Int16") { Valueint=Convert.ToDouble( viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null)); cell.SetCellValue(Valueint); } else if(oo.ToString() == "System.DateTime") { ValuedateTime =(DateTime)viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null); cell.SetCellValue(ValuedateTime.ToShortDateString()); } else { Value.Append(viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null).ToString()); cell.SetCellValue(Value.ToString()); } } Value.Length = 0; Valueint = 0; //ValuedateTime=0 iCellIndex++; } iCellIndex = 0; iRowIndex++; } } //导出主表 if (flag == 2) { //行 for (int i = 0; i { IRow DataRow =sheet.CreateRow(iRowIndex); //列 for (int j = 0; j< tf.Count; j++) { ICell cell =DataRow.CreateCell(iCellIndex); if(viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null) == null) { Value.Append(""); cell.SetCellValue(Value.ToString()); } else { object oo =viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null).GetType(); if(oo.ToString() == "System.Decimal" || oo.ToString() == "System.Int16") { Valueint =Convert.ToDouble(viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null)); cell.SetCellValue(Valueint); } else if(oo.ToString() == "System.DateTime") { ValuedateTime = (DateTime)viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null); cell.SetCellValue(ValuedateTime.ToShortDateString()); } else { Value.Append(viewList[i].GetType().GetProperty(tf[j].字段名称).GetValue(viewList[i],null).ToString()); cell.SetCellValue(Value.ToString()); } } Value.Length = 0; Valueint = 0; //ValuedateTime=0 iCellIndex++; } iCellIndex = 0; iRowIndex++; } } MemoryStream ms = newMemoryStream(); workBook.Write(ms); ms.Flush(); ms.Position = 0; using (FileStream fs = newFileStream(path, FileMode.Create, FileAccess.Write)) { byte[] data = ms.ToArray(); fs.Write(data, 0,data.Length); fs.Flush(); } #endregion try { return newActionResult(true, ""); } catch (Exception ex) { return newActionResult(false, ex.Message); } #endregion } else { return new ActionResult(false,"没有可导出的内容！"); } }