public void SaveFile()
{
using (FileStream stream = File.OpenWrite(this.Path))
{
_workbook.Write(stream);
}
_sheet.Dispose();
_workbook.Dispose();
}
/// <summary>
/// DataTable导出到Excel的MemoryStream Export()
/// </summary>
/// <param name="dtSource">DataTable数据源</param>
/// <param name="strHeaderText">Excel表头文本（例如：车辆列表）</param>
public MemoryStream Export(DataTable dtSource, string strHeaderText)
{
HSSFWorkbook workbook = new HSSFWorkbook();
ISheet sheet = 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 = "零风"; //填加xls文件作者信息
si.ApplicationName = "盟友1.10"; //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 = System.DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion
ICellStyle dateStyle = workbook.CreateCellStyle();
IDataFormat format = 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 = workbook.CreateSheet();
}
#region 表头及样式
{
IRow headerRow = sheet.CreateRow(0);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CENTER;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
}
#endregion
#region 列头及样式
{
IRow headerRow = sheet.CreateRow(1);
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.CENTER;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 10;
font.Boldweight = 700;
headStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
string strName = "";
switch (column.Caption)
{
case "id":
strName = "编号";
break;
case "jobNumber":
strName = "工号";
break;
case "userName":
strName = "名称";
break;
case "parent_id":
strName = "父id";
break;
case "stock":
strName = "产品";
break;
case "level":
strName = "等级";
break;
case "identity":
strName = "身份证";
break;
case "dateTime":
strName = "录入时间";
break;
case "shuxin":
strName = "属性";
break;
case "superiorNumber":
strName = "上级数量";
break;
case "subordinateNumber":
strName = "下级数量";
break;
case "merchantNumber":
strName = "商户数量";
break;
default:
break;
}
headerRow.CreateCell(column.Ordinal).SetCellValue(strName);
headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
//设置列宽
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
}
#endregion
rowIndex = 2;
}
#endregion
#region 填充内容
IRow dataRow = sheet.CreateRow(rowIndex);
foreach (DataColumn column in dtSource.Columns)
{
ICell newCell = 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
System.DateTime dateV;
System.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();
return(ms);
}
}
private void Import_To_Grid(string FilePath, string Extension, string isHDR)
{
if (Extension == ".xls")
{
//string notxlsx = ("This is not an xlsx file");
//ClientScript.RegisterStartupScript(this.GetType(), "myalert", "alert('" + notxlsx + "');", true);
HSSFWorkbook hssfworkbook;
using (FileStream file = new FileStream(FilePath, FileMode.Open, FileAccess.Read))
hssfworkbook = new HSSFWorkbook(file);
ISheet sheet = hssfworkbook.GetSheetAt(0);
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
DataTable dt = new DataTable();
//Counts the number of cells in a row and determines the columns from that.
int counter = sheet.GetRow(0).Cells.Count;
// J < number of columns needs to be exact at this moment
for (int j = 0; j < counter; j++)
{
// set each column to a - ** letters
// dt.Columns.Add(Convert.ToChar(((int)'A') + j).ToString());
//Get first row and set the headers for each cell
//dt.Columns.Add(Convert.ToString((string)sheet.GetRow(0).GetCell(+j).StringCellValue).ToString());
//Get each cell value in row 0 and return its string for a column name.
dt.Columns.Add(sheet.GetRow(0).GetCell(+j).StringCellValue);
}
while (rows.MoveNext())
{
HSSFRow row = (HSSFRow)rows.Current;
DataRow dr = dt.NewRow();
for (int i = 0; i < row.LastCellNum; i++)
{
ICell cell = row.GetCell(i);
if (cell == null)
{
dr[i] = null;
}
else
{
dr[i] = cell.ToString();
}
}
dt.Rows.Add(dr);
}
//Hackish way to remove the bad first row made by getting column names
dt.Rows.RemoveAt(0);
GridView1.Caption = Path.GetFileName(FilePath);
GridView1.DataSource = dt;
//Bind the data
GridView1.DataBind();
sheet.Dispose();
hssfworkbook.Dispose();
}
else
{
//Create a new epplus package using openxml
var pck = new OfficeOpenXml.ExcelPackage();
//load the package with the filepath I got from my fileuploader above on the button
//pck.Load(new System.IO.FileInfo(FilePath).OpenRead());
//stream the package
FileStream stream = new FileStream(FilePath, FileMode.Open);
pck.Load(stream);
//So.. I am basicly telling it that there is 1 worksheet or to just look at the first one. Not really sure what kind of mayham placing 2 in there would cause.
//Don't put 0 in the box it will likely cause it to break since it won't have a worksheet page at all.
var ws = pck.Workbook.Worksheets[1];
//This will add a sheet1 if your doing pck.workbook.worksheets["Sheet1"];
if (ws == null)
{
ws = pck.Workbook.Worksheets.Add("Sheet1");
// Obiviously I didn't add anything to the sheet so probably can count on it being blank.
}
//I created this datatable for below.
DataTable tbl = new DataTable();
//My sad attempt at changing a radio button value into a bool value to check if there is a header on the xlsx
var hdr = bool.Parse(isHDR);
Console.WriteLine(hdr);
//Set the bool value for from above.
var hasHeader = hdr;
//Setup the table based on the value from my bool
foreach (var firstRowCell in ws.Cells[1, 1, 1, ws.Dimension.End.Column])
{
tbl.Columns.Add(hasHeader ? firstRowCell.Text : string.Format("Column {0}", firstRowCell.Start.Column));
}
var startRow = hasHeader ? 2 : 1;
for (var rowNum = startRow; rowNum <= ws.Dimension.End.Row; rowNum++)
{
var wsRow = ws.Cells[rowNum, 1, rowNum, ws.Dimension.End.Column];
var row = tbl.NewRow();
foreach (var cell in wsRow)
{
row[cell.Start.Column - 1] = cell.Text;
}
tbl.Rows.Add(row);
}
//Bind Data to GridView
//I have all my info in the tbl dataTable so the datasource for the Gridview1 is set to tbl
GridView1.Caption = Path.GetFileName(FilePath);
GridView1.DataSource = tbl;
//Bind the data
GridView1.DataBind();
pck.Save();
pck.Dispose();
stream.Close();
// string pathD = FilePath;
FilePath = null;
stream = null;
// var fileToDelete = new FileInfo(pathD);
// fileToDelete.Delete();
}
}
public void Dispose()
{
_sheet.Dispose();
_workbook.Dispose();
}