导出列表信息，可通过使用模板导出，也可直接导出。
一、直接导出列表信息
/// <summary>
/// 导出excel文件
/// </summary>
/// <param name="reportTitle">标题</param>
/// <param name="dt">数据源</param>
/// <param name="columns">列名</param>
/// <param name="filePath">文件路径</param>
/// <param name="maxRow">一页显示最大记录数</param>
public static void Export(string reportTitle, List<string> subTitles, DataTable dt, Dictionary<string, string> columns, string filePath, int maxRow)
{
int WorkSheetCount = Convert.ToInt32(Math.Ceiling(dt.Rows.Count * 1.0 / maxRow));
XlsDocument doc = new XlsDocument();
for (int i = 0; i < WorkSheetCount; i++)
{
Worksheet sheet = doc.Workbook.Worksheets.Add(string.Format("Sheet{0}", i + 1));
int rowIndex = 0;
int colIndex = 0;
int currentMinRowIndex = i * maxRow;
int currentMaxRowIndex = 0;
if (((i + 1) * maxRow + 1) < dt.Rows.Count)
currentMaxRowIndex = (i + 1) * maxRow;
else
currentMaxRowIndex = dt.Rows.Count;
//标题
if (!string.IsNullOrEmpty(reportTitle))
{
rowIndex++;
XF cellXF = doc.NewXF();
cellXF.VerticalAlignment = VerticalAlignments.Centered;
cellXF.HorizontalAlignment = HorizontalAlignments.Centered;
cellXF.Font.Height = 24 * 12;
cellXF.Font.Bold = true;
sheet.Cells.Add(rowIndex, 1, reportTitle, cellXF);
MergeArea area = new MergeArea(rowIndex, rowIndex, 1, columns.Count);
sheet.AddMergeArea(area);
}
//副本标题
if (subTitles != null && subTitles.Count > 0)
{
foreach (string sub in subTitles)
{
rowIndex++;
sheet.Cells.Add(rowIndex, 1, sub);
MergeArea area = new MergeArea(rowIndex, rowIndex, 1, columns.Count);
sheet.AddMergeArea(area);
}
}
//列头标题
rowIndex++;
foreach (string colTitle in columns.Values)
{
colIndex++;
XF cellXF = doc.NewXF();
cellXF.VerticalAlignment = VerticalAlignments.Centered;
cellXF.HorizontalAlignment = HorizontalAlignments.Centered;
cellXF.Font.Bold = true;
cellXF.TopLineColor = Colors.Black;
cellXF.TopLineStyle = 1;
cellXF.BottomLineColor = Colors.Black;
cellXF.BottomLineStyle = 1;
cellXF.LeftLineColor = Colors.Black;
cellXF.LeftLineStyle = 1;
cellXF.RightLineColor = Colors.Black;
cellXF.RightLineStyle = 1;
sheet.Cells.Add(rowIndex, colIndex, colTitle, cellXF);
}
//数据行
for (int j = currentMinRowIndex; j < currentMaxRowIndex; j++)
{
rowIndex++;
colIndex = 0;
XF cellXF = doc.NewXF();
cellXF.TopLineColor = Colors.Black;
cellXF.TopLineStyle = 1;
cellXF.BottomLineColor = Colors.Black;
cellXF.BottomLineStyle = 1;
cellXF.LeftLineColor = Colors.Black;
cellXF.LeftLineStyle = 1;
cellXF.RightLineColor = Colors.Black;
cellXF.RightLineStyle = 1;
foreach (string colName in columns.Keys)
{
colIndex++;
sheet.Cells.Add(rowIndex, colIndex, dt.Rows[j][colName] == null || dt.Rows[j][colName] == DBNull.Value ? "" : dt.Rows[j][colName].ToString(), cellXF);
}
}
}
doc.FileName = System.Web.HttpContext.Current.Server.UrlEncode(reportTitle) + ".xls";
if (!string.IsNullOrEmpty(filePath))
{
doc.Save(filePath);
}
else
{
//把文件直接写到客户端
doc.Send();
System.Web.HttpContext.Current.Response.Flush();
System.Web.HttpContext.Current.Response.End();
}
}
测试用例：
private void Execel(DataTable dt)
{
//添加列
dt.Columns.Add(new DataColumn("C_TEST_E_NEW"));
if (dt.Rows.Count > 0 && dt != null)
{
//数据转换
foreach (DataRow dr in dt.Rows)
{
dr["C_TEST_E_NEW"] = GetMap( dr["C_TEST_E"]);
}
var cols = new Dictionary<string, string>();
cols.Add("C_TEST_A", "测试A");
cols.Add("C_TEST_B, "测试B");
cols.Add("C_TEST_C", "测试C");
cols.Add("C_TEST_D", "测试D");
cols.Add("C_TEST_E", "测试E");
var subTitle = new List<string>();
subTitle.Add("导出时间：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
ExcelHelper.Export("ExportTitle", subTitle, dt, cols);
}
二、使用模板导出
public HSSFCell GetCell(HSSFRow row, HSSFCellStyle cellStyle, int colIdx)
{
HSSFCell cell = row.GetCell(colIdx) as HSSFCell;
if (cell == null)
{
cell = row.CreateCell(colIdx) as HSSFCell;
cell.CellStyle = cellStyle;
}
return cell;
}
public void ExportExcel(bool flag)
{
DataTable dt = GetTable(true);
using (FileStream file = new FileStream(Server.MapPath("~/Test/ExportTest.xls"), FileMode.Open, FileAccess.Read))
{
HSSFWorkbook hssfworkbook = new HSSFWorkbook(file);
HSSFSheet sheet1 = hssfworkbook.GetSheet("Sheet1") as HSSFSheet;
HSSFCellStyle sheetStyle = hssfworkbook.CreateCellStyle() as HSSFCellStyle;
sheetStyle.BorderBottom = NPOI.SS.UserModel.CellBorderType.THIN;
sheetStyle.BottomBorderColor = 64;
sheetStyle.BorderLeft = NPOI.SS.UserModel.CellBorderType.THIN;
sheetStyle.LeftBorderColor = 64;
sheetStyle.BorderRight = NPOI.SS.UserModel.CellBorderType.THIN;
sheetStyle.RightBorderColor = 64;
sheetStyle.BorderTop = NPOI.SS.UserModel.CellBorderType.THIN;
sheetStyle.TopBorderColor = 64;
sheetStyle.WrapText = true;
sheet1.ForceFormulaRecalculation = true;
for (int i = 0; i < dt.Rows.Count; i++)
{
DataRow row = dt.Rows[i];
HSSFRow hssfRow = sheet1.CreateRow(sheet1.LastRowNum + 1) as HSSFRow;
GetCell(hssfRow, sheetStyle, 0).SetCellValue(GetStreetName(row["C_TEST_A"]));
GetCell(hssfRow, sheetStyle, 1).SetCellValue(GetValue(row["C_TEST_B"]));
GetCell(hssfRow, sheetStyle, 2).SetCellValue(GetReason(row["C_TEST_C"]));
GetCell(hssfRow, sheetStyle, 3).SetCellValue(GetValue(row["C_TEST_D"]));
GetCell(hssfRow, sheetStyle, 4).SetCellValue(GetValue(row["C_TEST_E"]));
}
using (MemoryStream ms = new MemoryStream())
{
hssfworkbook.Write(ms);
Response.Charset = "utf-8";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Response.AddHeader("Content-Disposition", string.Format("attachment;filename=SiteInfoSearch.xls"));
Response.HeaderEncoding = System.Text.Encoding.GetEncoding("GB2312"); //中文标题
Response.BinaryWrite(ms.ToArray());
Response.End();
}
}
}
时间： 2024-10-29 19:10:35