NPOI 导出 Excel 【c#】
效果图：
代码
if (String.IsNullOrEmpty(ddlZph.SelectedValue))
{
MessageBox.ShowMessage("请选择一场招聘会");
return;
}
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = (HSSFSheet)wb.CreateSheet("sheet1"); //创建工作表
sheet.CreateFreezePane(0, 5); //冻结列头行
#region 设置列宽
sheet.SetColumnWidth(0, 30 * 256);
sheet.SetColumnWidth(1, 30 * 256);
sheet.SetColumnWidth(2, 20 * 256);
sheet.SetColumnWidth(3, 20 * 256);
sheet.SetColumnWidth(4, 30 * 256);
#endregion
#region 定义字体
HSSFFont cs_Title_Font = (HSSFFont)wb.CreateFont(); //创建字体
cs_Title_Font.Boldweight = 800; //字体加粗
cs_Title_Font.FontHeightInPoints = 12; //字体大小
HSSFFont font_head = (HSSFFont)wb.CreateFont(); //创建字体
font_head.Boldweight = 800; //字体加粗
font_head.FontHeightInPoints = 10; //字体大小
#endregion
#region 定义样式
HSSFCellStyle cs_Title = (HSSFCellStyle)wb.CreateCellStyle(); //创建列头样式
cs_Title.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CENTER; //水平居中
cs_Title.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
cs_Title.SetFont(cs_Title_Font); //将字体绑定到样式
HSSFCellStyle cs_Head = (HSSFCellStyle)wb.CreateCellStyle(); //创建列头样式
cs_Head.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CENTER; //水平居中
cs_Head.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
cs_Head.SetFont(font_head); //将字体绑定到样式
HSSFCellStyle cs_center = (HSSFCellStyle)wb.CreateCellStyle();
cs_center.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CENTER; //水平居中
cs_center.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
HSSFCellStyle cs_left = (HSSFCellStyle)wb.CreateCellStyle();
cs_left.Alignment = NPOI.SS.UserModel.HorizontalAlignment.LEFT; //水平居中
cs_left.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
HSSFCellStyle cs_right = (HSSFCellStyle)wb.CreateCellStyle();
cs_right.Alignment = NPOI.SS.UserModel.HorizontalAlignment.RIGHT; //水平居中
cs_right.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
HSSFCellStyle cs_addr = (HSSFCellStyle)wb.CreateCellStyle();
cs_addr.Alignment = NPOI.SS.UserModel.HorizontalAlignment.LEFT;
cs_addr.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.CENTER; //垂直居中
cs_addr.WrapText = true; //自动换行
#endregion
#region 数据绑定
//取数
string recId = ddlZph.SelectedValue;
B_Z_Recruitment_List bll = new B_Z_Recruitment_List();
Model.Z_Recruitment_List mod = bll.GetModel(int.Parse(recId));
//第一行（标题）
HSSFRow row_Title = (HSSFRow)sheet.CreateRow(0); //创建列头行
row_Title.HeightInPoints = 19.5F; //设置列头行高
HSSFCell cell_Title = (HSSFCell)row_Title.CreateCell(0); //创建单元格
cell_Title.CellStyle = cs_Title; //将样式绑定到单元格
cell_Title.SetCellValue("招聘会信息");
//第二行
HSSFRow row2 = (HSSFRow)sheet.CreateRow(1); //创建列头行
HSSFCell cell0_row2 = (HSSFCell)row2.CreateCell(0); //创建单元格
cell0_row2.SetCellValue("招聘会名称：");
cell0_row2.CellStyle = cs_right;
HSSFCell cell1_row2 = (HSSFCell)row2.CreateCell(1); //创建单元格
cell1_row2.SetCellValue(mod.Rec_Title);
//第三行
HSSFRow row3 = (HSSFRow)sheet.CreateRow(2); //创建列头行
HSSFCell cell0_row3 = (HSSFCell)row3.CreateCell(0); //创建单元格
cell0_row3.SetCellValue("举办时间：");
cell0_row3.CellStyle = cs_right;
HSSFCell cell1_row3 = (HSSFCell)row3.CreateCell(1); //创建单元格
cell1_row3.SetCellValue(mod.ZPTime.ToString());
//第四行
HSSFRow row4 = (HSSFRow)sheet.CreateRow(3); //创建列头行
HSSFCell cell0_row4 = (HSSFCell)row4.CreateCell(0); //创建单元格
cell0_row4.SetCellValue("举办地点：");
cell0_row4.CellStyle = cs_right;
HSSFCell cell1_row4 = (HSSFCell)row4.CreateCell(1); //创建单元格
cell1_row4.SetCellValue(mod.addr);
//第五行
HSSFRow row5 = (HSSFRow)sheet.CreateRow(4); //创建列头行
HSSFCell cell0_row5 = (HSSFCell)row5.CreateCell(0); //创建单元格
cell0_row5.SetCellValue("招聘单位名称");
cell0_row5.CellStyle = cs_Head;
HSSFCell cell1_row5 = (HSSFCell)row5.CreateCell(1); //创建单元格
cell1_row5.SetCellValue("招聘岗位");
cell1_row5.CellStyle = cs_Head;
HSSFCell cell2_row5 = (HSSFCell)row5.CreateCell(2); //创建单元格
cell2_row5.SetCellValue("联系人姓名");
cell2_row5.CellStyle = cs_Head;
HSSFCell cell3_row5 = (HSSFCell)row5.CreateCell(3); //创建单元格
cell3_row5.SetCellValue("联系电话");
cell3_row5.CellStyle = cs_Head;
HSSFCell cell4_row5 = (HSSFCell)row5.CreateCell(4); //创建单元格
cell4_row5.SetCellValue("联系地址");
cell4_row5.CellStyle = cs_Head;
//单位信息数据
string sqlCmp = "select * from z_company_info";
DataTable dtCmpInfo = DbHelperSQL.GetDataTable(sqlCmp);
//招聘单位数据
string sql = "select * from Z_Company_List where state = 1 and rec_id = "+ recId + "";
DataTable dt = DbHelperSQL.GetDataTable(sql);
if (dt != null && dt.Rows.Count > 0)
{
int k = 4;//从第5行开始
int cmpRowS = 0;
for (int i = 0; i < dt.Rows.Count; i++)
{
k ++;
cmpRowS = k;
int cmpAddId = int.Parse(dt.Rows[i]["id"].ToString());
int infoId = int.Parse(dt.Rows[i]["infoid"].ToString());
string cmpName = dt.Rows[i]["CompanyName"].ToString();
HSSFRow row = (HSSFRow)sheet.CreateRow(k);
HSSFCell cell0_row = (HSSFCell)row.CreateCell(0); //创建单元格
cell0_row.SetCellValue(cmpName);
cell0_row.CellStyle = cs_center;
//岗位数据
string sqlJob = "select * from Z_Job_List where CompanyAddID = "+ cmpAddId + "";
DataTable dtJob = DbHelperSQL.GetDataTable(sqlJob);
//
int x = k;
for (int j = 0; j < dtJob.Rows.Count; j++)
{
string jobName = dtJob.Rows[j]["JobName"].ToString();
if (j == 0)
{
string linkMan = dtCmpInfo.Select("id = " + infoId + "")[0]["LinkMan"].ToString();
string linkTel = dtCmpInfo.Select("id = " + infoId + "")[0]["Tel"].ToString();
string addr = dtCmpInfo.Select("id = " + infoId + "")[0]["Addr"].ToString();
HSSFCell cell1_row = (HSSFCell)row.CreateCell(1);
cell1_row.SetCellValue(jobName);
HSSFCell cell2_row = (HSSFCell)row.CreateCell(2);
cell2_row.SetCellValue(linkMan);
cell2_row.CellStyle = cs_center;
HSSFCell cell3_row = (HSSFCell)row.CreateCell(3);
cell3_row.SetCellValue(linkTel);
cell3_row.CellStyle = cs_center;
HSSFCell cell4_row = (HSSFCell)row.CreateCell(4);
cell4_row.SetCellValue(addr);
cell4_row.CellStyle = cs_addr;
}
else {
//职位创建行的下标
int z = x + j;
HSSFRow rowJob = (HSSFRow)sheet.CreateRow(z);
HSSFCell cell1_rowJob = (HSSFCell)rowJob.CreateCell(1); //创建单元格
cell1_rowJob.SetCellValue(jobName);
k++;
}
}
sheet.AddMergedRegion(new CellRangeAddress(cmpRowS, k, 0, 0));
sheet.AddMergedRegion(new CellRangeAddress(cmpRowS, k, 2, 2));
sheet.AddMergedRegion(new CellRangeAddress(cmpRowS, k, 3, 3));
sheet.AddMergedRegion(new CellRangeAddress(cmpRowS, k, 4, 4));
}
}
#endregion
#region 合并单元格
sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, 4));
sheet.AddMergedRegion(new CellRangeAddress(1, 1, 1, 4));
sheet.AddMergedRegion(new CellRangeAddress(2, 2, 1, 4));
sheet.AddMergedRegion(new CellRangeAddress(3, 3, 1, 4));
#endregion
//发送到客户端
MemoryStream ms = new MemoryStream();
wb.Write(ms);
Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xls", HttpUtility.UrlEncode("WS" + "_" + DateTime.Now.ToString("yyyy-MM-dd"), System.Text.Encoding.UTF8)));
Response.BinaryWrite(ms.ToArray());
Response.Flush();
Response.End();
wb = null;
ms.Close();
ms.Dispose()