C# 用NPOI操作excel表格
最近在做表格，一大堆SQL已经把我压垮。。转一个C#操作表格的例程用的NPOI//
// GET: /Excel/
public ActionResult Write()
{
var workbook = new HSSFWorkbook();//从流内容创建Workbook对象
ISheet sheet = ((HSSFWorkbook)workbook).CreateSheet("sheetOne");//创建工作表
IRow row = sheet.CreateRow(0);//在工作表中添加一行
ICell cell = row.CreateCell(1);//在行中添加一列
cell.SetCellValue("test");//设置列的内容
setCellStyle(workbook, cell);
mergeCell(sheet, 0, 0, 1, 4);
sheet = ((HSSFWorkbook)workbook).CreateSheet("sheet2");//创建工作表
setCellDropdownlist(sheet);
setCellInputNumber(sheet);
string filePath = Server.MapPath("~/ExportFiles/test.xls");
FileStream fs = new FileStream(filePath, FileMode.Create);
workbook.Write(fs);
fs.Close();
return null;
}
/// <summary>
/// 设置单元格为下拉框并限制输入值
/// </summary>
/// <param name="sheet"></param>
private void setCellDropdownlist(ISheet sheet)
{
//设置生成下拉框的行和列
var cellRegions = new CellRangeAddressList(0, 65535, 0, 0);
//设置 下拉框内容
DVConstraint constraint = DVConstraint.CreateExplicitListConstraint(
new string[] { "itemA", "itemB", "itemC" });
//绑定下拉框和作用区域，并设置错误提示信息
HSSFDataValidation dataValidate = new HSSFDataValidation(cellRegions, constraint);
dataValidate.CreateErrorBox("输入不合法", "请输入下拉列表中的值。");
dataValidate.ShowPromptBox = true;
sheet.AddValidationData(dataValidate);
}
/// <summary>
/// 设置单元格只能输入数字
/// </summary>
/// <param name="sheet"></param>
private void setCellInputNumber(ISheet sheet)
{
//设置生成下拉框的行和列
var cellRegions = new CellRangeAddressList(0, 65535, 1, 1);
//第二个参数int comparisonOperator参考源码获取
//https://github.com/tonyqus/npoi
//NPOITest项目
DVConstraint constraint = DVConstraint.CreateNumericConstraint(
ValidationType.INTEGER, OperatorType.BETWEEN, "0", "100");
HSSFDataValidation dataValidate = new HSSFDataValidation(cellRegions, constraint);
dataValidate.CreateErrorBox("输入不合法", "请输入1~100的数字。");
//dataValidate.PromptBoxTitle = "ErrorInput";
sheet.AddValidationData(dataValidate);
}
/// <summary>
/// 合并单元格
/// </summary>
/// <param name="sheet"></param>
/// <param name="firstRow"></param>
/// <param name="lastRow"></param>
/// <param name="firstCell"></param>
/// <param name="lastCell"></param>
private void mergeCell(ISheet sheet, int firstRow, int lastRow, int firstCell, int lastCell)
{
sheet.AddMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCell, lastCell));//2.0使用 2.0以下为Region
}
/// <summary>
/// 设置单元格样式
/// </summary>
/// <param name="workbook"></param>
/// <param name="cell"></param>
private void setCellStyle(HSSFWorkbook workbook, ICell cell)
{
HSSFCellStyle fCellStyle = (HSSFCellStyle)workbook.CreateCellStyle();
HSSFFont ffont = (HSSFFont)workbook.CreateFont();
ffont.FontHeight = 20 * 20;
ffont.FontName = "宋体";
ffont.Color = HSSFColor.Red.Index;
fCellStyle.SetFont(ffont);
fCellStyle.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center;//垂直对齐
fCellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;//水平对齐
cell.CellStyle = fCellStyle;
} 本帖最后由 李维强-15级 于 2016-8-20 14:59 编辑
//创建一个常用的xls文件
private void button3_Click(object sender, EventArgs e)
{
IWorkbook wb = new HSSFWorkbook();
//创建表
ISheet sh = wb.CreateSheet("zhiyuan");
//设置单元的宽度
sh.SetColumnWidth(0, 15 * 256);
sh.SetColumnWidth(1, 35 * 256);
sh.SetColumnWidth(2, 15 * 256);
sh.SetColumnWidth(3, 10 * 256);
int i = 0;
#region 练习合并单元格
sh.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, 3));
//CellRangeAddress（）该方法的参数次序是：开始行号，结束行号，开始列号，结束列号。
IRow row0 = sh.CreateRow(0);
row0.Height = 20 * 20;
ICell icell1top0 = row0.CreateCell(0);
icell1top0.CellStyle = Getcellstyle(wb, stylexls.头);
icell1top0.SetCellValue("标题合并单元");
#endregion
i++;
#region 设置表头
IRow row1 = sh.CreateRow(1);
row1.Height = 20 * 20;
ICell icell1top = row1.CreateCell(0);
icell1top.CellStyle = Getcellstyle(wb, stylexls.头);
icell1top.SetCellValue("网站名");
ICell icell2top = row1.CreateCell(1);
icell2top.CellStyle = Getcellstyle(wb, stylexls.头);
icell2top.SetCellValue("网址");
ICell icell3top = row1.CreateCell(2);
icell3top.CellStyle = Getcellstyle(wb, stylexls.头);
icell3top.SetCellValue("百度快照");
ICell icell4top = row1.CreateCell(3);
icell4top.CellStyle = Getcellstyle(wb, stylexls.头);
icell4top.SetCellValue("百度收录");
#endregion
using(FileStream stm=File.OpenWrite(@"c:/myMergeCell.xls"))
{
wb.Write(stm);
MessageBox.Show("提示：创建成功！");
}
}
#region 定义单元格常用到样式的枚举
public enum stylexls
{
头,
url,
时间,
数字,
钱,
百分比,
中文大写,
科学计数法,
默认
}
#endregion
#region 定义单元格常用到样式
static ICellStyle Getcellstyle(IWorkbook wb, stylexls str)
{
ICellStyle cellStyle = wb.CreateCellStyle();
//定义几种字体
//也可以一种字体，写一些公共属性，然后在下面需要时加特殊的
IFont font12 = wb.CreateFont();
font12.FontHeightInPoints = 10;
font12.FontName = "微软雅黑";
IFont font = wb.CreateFont();
font.FontName = "微软雅黑";
//font.Underline = 1;下划线
IFont fontcolorblue = wb.CreateFont();
fontcolorblue.Color = HSSFColor.OLIVE_GREEN.BLUE.index;
fontcolorblue.IsItalic = true;//下划线
fontcolorblue.FontName = "微软雅黑";
//边框
cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.DOTTED;
cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.HAIR;
cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.HAIR;
cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.DOTTED;
//边框颜色
cellStyle.BottomBorderColor = HSSFColor.OLIVE_GREEN.BLUE.index;
cellStyle.TopBorderColor = HSSFColor.OLIVE_GREEN.BLUE.index;
//背景图形，我没有用到过。感觉很丑
//cellStyle.FillBackgroundColor = HSSFColor.OLIVE_GREEN.BLUE.index;
//cellStyle.FillForegroundColor = HSSFColor.OLIVE_GREEN.BLUE.index;
cellStyle.FillForegroundColor = HSSFColor.WHITE.index;
// cellStyle.FillPattern = FillPatternType.NO_FILL;
cellStyle.FillBackgroundColor = HSSFColor.BLUE.index;
//水平对齐
cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.LEFT;
//垂直对齐
cellStyle.VerticalAlignment = VerticalAlignment.CENTER;
//自动换行
cellStyle.WrapText = true;
//缩进;当设置为1时，前面留的空白太大了。希旺官网改进。或者是我设置的不对
cellStyle.Indention = 0;
//上面基本都是设共公的设置
//下面列出了常用的字段类型
switch (str)
{
case stylexls.头:
// cellStyle.FillPattern = FillPatternType.LEAST_DOTS;
cellStyle.SetFont(font12);
break;
case stylexls.时间:
IDataFormat datastyle = wb.CreateDataFormat();
cellStyle.DataFormat = datastyle.GetFormat("yyyy/mm/dd");
cellStyle.SetFont(font);
break;
case stylexls.数字:
cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00");
cellStyle.SetFont(font);
break;
case stylexls.钱:
IDataFormat format = wb.CreateDataFormat();
cellStyle.DataFormat = format.GetFormat("￥#,##0");
cellStyle.SetFont(font);
break;
case stylexls.url:
fontcolorblue.Underline = 1;
cellStyle.SetFont(fontcolorblue);
break;
case stylexls.百分比:
cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00%");
cellStyle.SetFont(font);
break;
case stylexls.中文大写:
IDataFormat format1 = wb.CreateDataFormat();
cellStyle.DataFormat = format1.GetFormat("[$-804]0");
cellStyle.SetFont(font);
break;
case stylexls.科学计数法:
cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00E+00");
cellStyle.SetFont(font);
break;
case stylexls.默认:
cellStyle.SetFont(font);
break;
}
return cellStyle;
}
#endregion 本帖最后由 李维强-15级 于 2019-5-13 00:36 编辑
https://www.cnblogs.com/zqyw/p/7462561.html
另外的库 aspose spire
页:
[1]