标签：hid ble otto type com nbsp 文件 use subject
1、这里引用的是 NPOI1.2.5.0版本。
2、导入命名空间
using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
3、新建一个导出类，直接将代码复制过去即可使用。
#region 通过NPOI组件导出EXCEL
private static HSSFWorkbook hssfworkbook;
public class CommentModel
{
public int rowIndex;
public int columnIndex;
public string commentText;
public CommentModel(int row, int column, string text)
{
this.rowIndex = row;
this.columnIndex = column;
this.commentText = text;
}
}
public static void NpoiToExcel(DataTable dt)
{
NpoiToExcel(dt, null, null, null);
}
public static void NpoiToExcel(DataTable dt, List<int> columnsHiddenIndex, List<int> columnsEnableIndex, CommentModel commentModel)
{
string filename = string.Format("Excel{0}.xls", System.DateTime.Now.Ticks);
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", filename));
HttpContext.Current.Response.Clear();
InitializeWorkbook();
GenerateData(dt, columnsHiddenIndex, columnsEnableIndex, commentModel);
HttpContext.Current.Response.BinaryWrite(WriteToStream().GetBuffer());
HttpContext.Current.Response.End();
}
private static MemoryStream WriteToStream()
{
MemoryStream file = new MemoryStream();
hssfworkbook.Write(file);
return file;
}
private static void GenerateData(DataTable dt, List<int> columnsHiddenIndex, List<int> columnsEnableIndex, CommentModel commentModel)
{
ISheet sheet1 = hssfworkbook.CreateSheet("Sheet1");
sheet1.DefaultColumnWidth = 20;
IRow rowHeader = sheet1.CreateRow(0);
// 设置背景颜色为天蓝色
ICellStyle headerCellStyle = hssfworkbook.CreateCellStyle();
headerCellStyle.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.SKY_BLUE.index;
headerCellStyle.FillPattern = FillPatternType.SOLID_FOREGROUND;
// 设置单元格字体
IFont font = hssfworkbook.CreateFont();
font.Boldweight = (short)FontBoldWeight.BOLD; // 粗体
headerCellStyle.SetFont(font);
// 设置单元格边框
headerCellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.THIN;
headerCellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.THIN;
headerCellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.THIN;
headerCellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.THIN;
headerCellStyle.WrapText = true;
// 设置导出标题
for (int i = 0; i < dt.Columns.Count; i++)
{
ICell cell = rowHeader.CreateCell(i);
cell.CellStyle = headerCellStyle;
cell.SetCellType(CellType.STRING);
cell.SetCellValue(dt.Columns[i].ColumnName);
}
// 添加批注
if (commentModel != null)
{
IDrawing patr = (HSSFPatriarch)sheet1.CreateDrawingPatriarch();
HSSFComment comment = (HSSFComment)patr.CreateCellComment(new HSSFClientAnchor(0, 0, 0, 0, commentModel.columnIndex + 1, commentModel.rowIndex + 1, commentModel.columnIndex + 3, commentModel.rowIndex + 6));
HSSFRichTextString str = new HSSFRichTextString(commentModel.commentText);
IFont fontComment = hssfworkbook.CreateFont();
fontComment.FontName = ("Arial");
fontComment.FontHeightInPoints = 10;
fontComment.Boldweight = (short)FontBoldWeight.BOLD;
str.ApplyFont(fontComment);
comment.String = str;
comment.Row = commentModel.rowIndex;
comment.Column = commentModel.columnIndex;
}
// 设置单元格边框
ICellStyle cellStyle = hssfworkbook.CreateCellStyle();
cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.THIN;
cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.THIN;
cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.THIN;
cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.THIN;
// 设置导出内容
for (int i = 1; i <= dt.Rows.Count; i++)
{
IRow row = sheet1.CreateRow(i);
for (int j = 0; j < dt.Columns.Count; j++)
{
string cellContent = dt.Rows[i - 1][j].ToString();
// 判断字符串大小，最大长度为32767，超过必须截取，否则设置EXCEL单元格会报错
if (cellContent.Length > 32767)
{
cellContent = cellContent.Substring(0, 32767);
}
ICell cell = row.CreateCell(j);
cell.CellStyle = cellStyle;
cell.SetCellType(CellType.STRING);
cell.SetCellValue(cellContent);
}
row.Height = 20 * 20;
}
if (columnsHiddenIndex != null)
{
for (int n = 0; n < columnsHiddenIndex.Count; n++)
{
sheet1.SetColumnHidden(columnsHiddenIndex[n], true);
}
}
if (columnsEnableIndex != null)
{
DVConstraint dvconstraint = DVConstraint.CreateExplicitListConstraint(new string[] { "Y", "N" });
for (int m = 0; m < columnsEnableIndex.Count; m++)
{
//所有序号都从零算起，第一行标题行除外，所以第一个参数是1，65535是一个Sheet的最大行数
CellRangeAddressList rangeList = new CellRangeAddressList(1, dt.Rows.Count, columnsEnableIndex[m], columnsEnableIndex[m]);
HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);
((HSSFSheet)sheet1).AddValidationData(dataValidation);
}
}
}
private static void InitializeWorkbook()
{
hssfworkbook = new HSSFWorkbook();
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "博客";
hssfworkbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Subject = "博客园 Export";
hssfworkbook.SummaryInformation = si;
}
/// <summary>
/// 根据excel文件路径 创建datatable
/// </summary>
/// <param name="strPath"></param>
/// <returns></returns>
public static DataTable ExcelToDataTable(string strPath)
{
FileStream stream = new FileStream(strPath, FileMode.Open, FileAccess.Read);
DataTable dt = new DataTable();
HSSFWorkbook workbook = new HSSFWorkbook(stream);
HSSFSheet sheet = (HSSFSheet)workbook.GetSheetAt(0);
HSSFRow headrow = (HSSFRow)sheet.GetRow(0);
HSSFCell cell;
for (int i = 0; i < headrow.LastCellNum; i++)
{
cell = (HSSFCell)headrow.GetCell(i);
dt.Columns.Add(cell.ToString());
}
int herdrowNum = headrow.LastCellNum;
for (int i = 0; i < sheet.LastRowNum; i++)
{
HSSFRow row = (HSSFRow)sheet.GetRow(i + 1);
if (row != null)
{
DataRow datarow = dt.NewRow();
for (int j = row.FirstCellNum; j < row.LastCellNum && j < herdrowNum; j++)
{
datarow[j] = row.GetCell(j) == null ? string.Empty : row.GetCell(j).ToString();
}
dt.Rows.Add(datarow);
}
}
return dt;
}
#endregion
4、导出excel时汉化列明。
DataTable dtExport = new DataTable();
//汉化的表头
dtExport.Columns.Add(Resources.ExportColumns.GUID/*ID*/, typeof(string));
dtExport.Columns.Add(Resources.ExportColumns.TASK_ID/*任务号*/, typeof(string));
dtExport.Columns.Add(Resources.ExportColumns.CONTENT/*内容*/, typeof(string));
dtExport.Columns.Add(Resources.ExportColumns.CREATOR_DATE/*日期*/, typeof(string));
dtExport.Columns.Add(Resources.ExportColumns.CREATOR_NAME/*创建人*/, typeof(string));
dtExport.Columns.Add(Resources.ExportColumns.CREATOR_ID/*创建工号*/, typeof(string));
int colNo = 0;
foreach (DataRow dr in dt.Rows)
{
colNo = 0;
DataRow drExport = dtExport.NewRow();
drExport[colNo++] = Convert.ToString(dr["GUID"]);
drExport[colNo++] = Convert.ToString(dr["TASK_ID"]);
drExport[colNo++] = Convert.ToString(dr["CONTENT"]);
drExport[colNo++] = Convert.ToString(dr["CREATOR_DATE"]);
drExport[colNo++] = Convert.ToString(dr["CREATOR_ID"]);
drExport[colNo++] = Convert.ToString(dr["CREATOR_NAME"]);
dtExport.Rows.Add(drExport);
}
dtExport.AcceptChanges();
Export.NpoiToExcel(dtExport);
标签：hid ble otto type com nbsp 文件 use subject
原文地址：http://www.cnblogs.com/wzystudy/p/6143584.html
