/// <summary>
/// 获取sheet表对应的DataTable
/// </summary>
/// <param name="sheet">Excel工作表</param>
/// <param name="strMsg"></param>
/// <returns></returns>
private static DataTable GetSheetDataTable(ISheet sheet, out string strMsg)
{
lock (filelock)
{
strMsg = "";
DataTable dt = new DataTable();
FDataHelper.CreateDtColumns(ref dt);
string sheetName = sheet.SheetName;
int startIndex = 0;// sheet.FirstRowNum;
int lastIndex = sheet.LastRowNum;
//最大列数
int cellCount = 0;
IRow maxRow = sheet.GetRow(0);
for (int i = startIndex; i <= lastIndex; i++)
{
IRow row = sheet.GetRow(i);
if (row != null && cellCount < row.LastCellNum)
{
cellCount = row.LastCellNum;
maxRow = row;
}
}
//列名设置
try
{
for (int i = 5; i < maxRow.LastCellNum; i++)//maxRow.FirstCellNum
{
dt.Columns.Add("data" + (i - 4));
}
}
catch
{
strMsg = "工作表" + sheetName + "中无数据";
return(null);
}
//数据填充
for (int i = startIndex; i <= lastIndex; i++)
{
IRow row = sheet.GetRow(i);
DataRow drNew = dt.NewRow();
if (row != null)
{
for (int j = row.FirstCellNum; j < row.LastCellNum; ++j)
{
if (row.GetCell(j) != null)
{
ICell cell = row.GetCell(j);
switch (cell.CellType)
{
case CellType.Blank:
drNew[j] = "";
break;
case CellType.Numeric:
short format = cell.CellStyle.DataFormat;
//对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理
if (format == 14 || format == 31 || format == 57 || format == 58)
{
drNew[j] = cell.DateCellValue;
}
else
{
drNew[j] = cell.NumericCellValue;
}
if (cell.CellStyle.DataFormat == 177 || cell.CellStyle.DataFormat == 178 || cell.CellStyle.DataFormat == 188)
{
drNew[j] = cell.NumericCellValue.ToString("#0.00");
}
break;
case CellType.String:
drNew[j] = cell.StringCellValue;
break;
case CellType.Formula:
try
{
drNew[j] = cell.NumericCellValue;
if (cell.CellStyle.DataFormat == 177 || cell.CellStyle.DataFormat == 178 || cell.CellStyle.DataFormat == 188)
{
drNew[j] = cell.NumericCellValue.ToString("#0.00");
}
}
catch
{
try
{
drNew[j] = cell.StringCellValue;
}
catch { }
}
break;
default:
drNew[j] = cell.StringCellValue;
break;
}
}
}
}
dt.Rows.Add(drNew);
}
return(dt);
}
}
/// <summary>
/// Excel转换成DataTable（.xls）
/// </summary>
/// <param name="filePath">Excel文件路径</param>
/// <returns></returns>
public static DataTable ExcelToDataTable(string filePath)
{
lock (filelock)
{
var dt = new DataTable();
FDataHelper.CreateDtColumns(ref dt);
using (var file = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
var hssfworkbook = new HSSFWorkbook(file);
var sheet = hssfworkbook.GetSheetAt(0);
int lastcolumn = sheet.GetRow(0).LastCellNum;
for (var j = 5; j < lastcolumn; j++)
{
dt.Columns.Add("data" + (j - 4));
}
var rows = sheet.GetRowEnumerator();
while (rows.MoveNext())
{
var row = (HSSFRow)rows.Current;
var dr = dt.NewRow();
for (var i = 0; i < row.LastCellNum; i++)
{
var cell = row.GetCell(i);
if (cell == null)
{
dr[i] = null;
}
else
{
switch (cell.CellType)
{
case CellType.Blank:
dr[i] = "[null]";
break;
case CellType.Boolean:
dr[i] = cell.BooleanCellValue;
break;
case CellType.Numeric:
dr[i] = cell.ToString();
break;
case CellType.String:
dr[i] = cell.StringCellValue;
break;
case CellType.Error:
dr[i] = cell.ErrorCellValue;
break;
case CellType.Formula:
try
{
dr[i] = cell.NumericCellValue;
}
catch
{
dr[i] = cell.StringCellValue;
}
break;
default:
dr[i] = "=" + cell.CellFormula;
break;
}
}
}
dt.Rows.Add(dr);
}
}
return(dt);
}
}