public void chuchushuju()
{
try
{
string path = PathHelper.dataPath + @"\Measure\" + tjcjg.Year.ToString() + tjcjg.Month.ToString() + tjcjg.Day.ToString() + tjcjg.Hour.ToString() + tjcjg.Minute.ToString() + tjcjg.Second.ToString() + ".xls";
using (FileStream fs = File.OpenWrite(path))
{
sheetc = 0;
sheetrr = sheet.CreateRow(0);
sheetcc = sheetrr.CreateCell(sheetc);
sheetcc.SetCellValue("序号（NUMBER）");
sheetc += 1;
sheetcc = sheetrr.CreateCell(sheetc);
sheetcc.SetCellValue("测量时间（MESURE TIME）");
foreach (jiancejieguo jcjg3 in jcjg2)
{
sheetc += 1;
sheetcc = sheetrr.CreateCell(sheetc);
sheetcc.SetCellValue(jcjg3.jiancexiangmu);
}
wkb.Write(fs);//向打开的这个xls文件中写入并保存。
wkb.Clear();
sheetr = 0; sheetc = 0;
sheet = wkb.CreateSheet("检测结果(Measure Data)");
tjcjg = DateTime.Now;
sheetrr = sheet.CreateRow(sheetr);
sheetcc = sheetrr.CreateCell(sheetc);
}
}
catch
{
}
finally { }
}
public static void Free() //释放资源
{
if (workbook != null)
{
workbook.Clear();
workbook.Close();
workbook = null;
}
}
private void WriteToFile()
{
string year = DateTime.Now.Year.ToString();
//string path = HttpContext.Current.Server.MapPath(DateTime.Now.ToString("yyyyMMddmmss") + ".xls");
string path = "d:\\a.xls";
FileStream file = new FileStream(path, FileMode.Create);
_hssfworkbook.Write(file);
file.Close();
_hssfworkbook.Clear();
}
protected override void Dispose(bool Disposing)
{
hssfworkbook.Clear();
}
private void ListWriteExcelFile(int allRows, int sheetCount, ExportFileInfo exportFileInfo, string filePath, List <T> list, CancellationToken token, ref int currectListOccupancyRows, ref int dispId, Action <int> exportProgressAction)
{
int currectSheetOccupancyRows = Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT;
int sheetIdx = 1;
int currectExcelIdx = 0; //当前excel操作行下标
int currectExcelCount = 0;
var workbook = new HSSFWorkbook();
try
{
var sheet = CreateSheet(workbook, sheetCount, sheetIdx, exportFileInfo.ExcelTitle, out currectExcelIdx);
int singleExcelMaxCount = Math.Min(Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO, allRows);
while (currectExcelCount < singleExcelMaxCount)
{
token.ThrowIfCancellationRequested();
int readerCount = Math.Min(Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT, currectListOccupancyRows);
readerCount = Math.Min(readerCount, currectSheetOccupancyRows);
if (readerCount > 0)
{
var readList = list.GetRange(0, readerCount);
int writeCount = 0;
sheet = ListToSheet(workbook, sheet, readList, ref dispId, ref currectExcelIdx, exportProgressAction, token, out writeCount);
list.RemoveRange(0, readerCount);
singleExcelMaxCount -= readerCount;
currectListOccupancyRows -= readerCount;
currectExcelCount += writeCount;
}
#region state update
if (currectListOccupancyRows <= 0 || readerCount == 0)
{
break;
}
if (singleExcelMaxCount >= Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO)
{
//Excel满了，退出当前Excel文件
break;
}
//切换Sheet
if ((singleExcelMaxCount > 0 && singleExcelMaxCount % Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT == 0) || (currectSheetOccupancyRows == 0))
{
if (sheetIdx == sheetCount)
{
break;
}
sheet.ForceFormulaRecalculation = true;
sheetIdx++;
sheet = CreateSheet(workbook, sheetCount, sheetIdx, exportFileInfo.ExcelTitle, out currectExcelIdx);
currectSheetOccupancyRows = Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO - singleExcelMaxCount;
}
#endregion
}
WriteWorkbookToFile(workbook, filePath);
}
finally
{
workbook.Clear();
workbook = null;
GC.Collect();
}
}
private void QueryDataReaderWriteExcel(MySqlConnection conn, int allRows, int sheetCount, ExportFileInfo exportFileInfo, string filePath, CancellationToken token, string querySqlPart, List <string> tableNameList, List <int> tableCountList, string whereSqlPart, ref int tableIndex, ref int currectTableOccupancyRows, ref int currectTableStartRowIdx, ref int dispId, Action <int> exportProgressAction)
{
int currectSheetOccupancyRows = Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT;
int sheetIdx = 1; //sheet下标
int currectExcelIdx = 0; //操作的excel操作行下标
int currectExcelCount = 0;
var workbook = new HSSFWorkbook();
try
{
var sheet = CreateSheet(workbook, sheetCount, sheetIdx, exportFileInfo.ExcelTitle, out currectExcelIdx);
int singleExcelMaxCount = Math.Min(Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO, allRows);
while (currectExcelCount < singleExcelMaxCount)
{
token.ThrowIfCancellationRequested();
int readerCount = Math.Min(Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT, currectSheetOccupancyRows);
readerCount = Math.Min(readerCount, currectTableOccupancyRows);
if (readerCount > 0)
{
string commandText = CreateQuerySqlStrAction(querySqlPart, tableNameList[tableIndex], whereSqlPart, currectTableStartRowIdx, readerCount);
int writeCount;
sheet = DataReaderToSheet(workbook, sheet, conn, commandText, ref dispId, ref currectExcelIdx, exportProgressAction, token, out writeCount);
singleExcelMaxCount -= readerCount;
currectTableOccupancyRows -= readerCount;
currectTableStartRowIdx += writeCount;
currectExcelCount += writeCount;
}
#region state update
if (currectTableOccupancyRows <= 0 || readerCount == 0)
{
//切换table
currectTableStartRowIdx = 0;
if (tableIndex == tableCountList.Count - 1)
{
break;
}
currectTableOccupancyRows = tableCountList[++tableIndex];
}
if (singleExcelMaxCount >= Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO)
{
//Excel满了，退出当前Excel文件
break;
}
//切换Sheet
if ((singleExcelMaxCount > 0 && singleExcelMaxCount % Pub.DEFAULT_EXCELEXPORT_SHEET_MAXCOUNT == 0) || (currectSheetOccupancyRows == 0))
{
if (sheetIdx == sheetCount)
{
break;
}
sheet.ForceFormulaRecalculation = true;
sheetIdx++;
sheet = CreateSheet(workbook, sheetCount, sheetIdx, exportFileInfo.ExcelTitle, out currectExcelIdx);
currectSheetOccupancyRows = Pub.DEFAULT_EXCEL_MAXCOUNT_FORINFO - singleExcelMaxCount;
}
#endregion
}
WriteWorkbookToFile(workbook, filePath);
}
finally
{
workbook.Clear();
workbook = null;
GC.Collect();
}
}
/// <summary>
/// DataTable导出到Excel的MemoryStream
/// </summary>
/// <param name="dtSource">源DataTable</param>
/// <param name="strHeaderText">表头文本</param>
public static MemoryStream Export(DataTable dtSource, string strHeaderText)
{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet();
#region 右击文件 属性信息
{
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "NPOI";
workbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Author = "文件作者信息"; //填加xls文件作者信息
si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息
si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息
si.Comments = "作者信息"; //填加xls文件作者信息
si.Title = "标题信息"; //填加xls文件标题信息
si.Subject = "主题信息"; //填加文件主题信息
si.CreateDateTime = DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion
HSSFCellStyle dateStyle = (HSSFCellStyle)workbook.CreateCellStyle();
HSSFDataFormat format = (HSSFDataFormat)workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
//取得列宽
int[] arrColWidth = new int[dtSource.Columns.Count];
foreach (DataColumn item in dtSource.Columns)
{
arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
}
for (int i = 0; i < dtSource.Rows.Count; i++)
{
for (int j = 0; j < dtSource.Columns.Count; j++)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
}
}
int rowIndex = 0;
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == 65535 || rowIndex == 0)
{
if (rowIndex != 0)
{
sheet = (HSSFSheet)workbook.CreateSheet();
}
#region 表头及样式
{
HSSFRow headerRow = (HSSFRow)sheet.CreateRow(0);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle();
// headStyle.Alignment = CellHorizontalAlignment.CENTER;
HSSFFont font = (HSSFFont)workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new Region(0, 0, 0, dtSource.Columns.Count - 1));
// headerRow.Dis();
}
#endregion
#region 列头及样式
{
HSSFRow headerRow = (HSSFRow)sheet.CreateRow(1);
HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle();
// headStyle.Alignment = CellHorizontalAlignment.CENTER;
HSSFFont font = (HSSFFont)workbook.CreateFont();
font.FontHeightInPoints = 10;
font.Boldweight = 700;
headStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
//设置列宽
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
// headerRow.Dispose();
}
#endregion
rowIndex = 2;
}
#endregion
#region 填充内容
HSSFRow dataRow = (HSSFRow)sheet.CreateRow(rowIndex);
foreach (DataColumn column in dtSource.Columns)
{
HSSFCell newCell = (HSSFCell)dataRow.CreateCell(column.Ordinal);
string drValue = row[column].ToString();
switch (column.DataType.ToString())
{
case "System.String": //字符串类型
newCell.SetCellValue(drValue);
break;
case "System.DateTime": //日期类型
DateTime dateV;
DateTime.TryParse(drValue, out dateV);
newCell.SetCellValue(dateV);
newCell.CellStyle = dateStyle; //格式化显示
break;
case "System.Boolean": //布尔型
bool boolV = false;
bool.TryParse(drValue, out boolV);
newCell.SetCellValue(boolV);
break;
case "System.Int16": //整型
case "System.Int32":
case "System.Int64":
case "System.Byte":
int intV = 0;
int.TryParse(drValue, out intV);
newCell.SetCellValue(intV);
break;
case "System.Decimal": //浮点型
case "System.Double":
double doubV = 0;
double.TryParse(drValue, out doubV);
newCell.SetCellValue(doubV);
break;
case "System.DBNull": //空值处理
newCell.SetCellValue("");
break;
default:
newCell.SetCellValue("");
break;
}
}
#endregion
rowIndex++;
}
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
// sheet.Dispose();
workbook.Clear();//一般只用写这一个就OK了，他会遍历并释放所有资源，但当前版本有问题所以只释放sheet
return(ms);
}
}
