C# NPOI 修改指定單元格的樣式 或者行樣式
阿新 • • 發佈:2019-01-07
#region 2.NPOI讀取Excel 驗證Excel資料的有效性(非空) 並修改指定單元格樣式
IWorkbook workbook = null;
ISheet sheet = null;
ArrayList questionRowIndex = new ArrayList();/*收集出現問題行的索引*/
using (FileStream fs = System.IO.File.Open(readExcelPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
{
#region 選擇解析方式
if (dataLog.ExcelName.IndexOf(".xlsx") > 0)
{
workbook = new XSSFWorkbook(fs);
}
else if(dataLog.ExcelName.IndexOf(".xls") > 0)
{
workbook = new HSSFWorkbook(fs);
}
#endregion
#region 核驗數值列資料是否為空 並記錄為空索引行 修改Excel指定索引行後重新儲存
sheet = workbook.GetSheetAt(0);/*指定資料格式只讀取索引值為0的第一個sheet*/
IRow row = null;
for(int j =1;j < sheet.PhysicalNumberOfRows && sheet.GetRow(j) != null;j++)/*j=1 從索引的第一行開始過濾掉表頭*/
{
row = sheet.GetRow(j);
if (string.IsNullOrWhiteSpace(row.GetCell(5).ToString()))/*驗證數值非空*/
{
/*修改樣式關鍵程式碼*/
ICellStyle style = workbook.CreateCellStyle();
style.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Red.Index;
style.FillPattern = FillPattern.SolidForeground;
/*重新修改檔案指定單元格樣式*/
FileStream fs1 = System.IO.File.OpenWrite(readExcelPath);
workbook.Write(fs1);
fs1.Close();
}
}
#endregion
}
IWorkbook workbook = null;
ISheet sheet = null;
ArrayList questionRowIndex = new ArrayList();/*收集出現問題行的索引*/
using (FileStream fs = System.IO.File.Open(readExcelPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
{
#region 選擇解析方式
if (dataLog.ExcelName.IndexOf(".xlsx") > 0)
{
workbook = new XSSFWorkbook(fs);
}
else if(dataLog.ExcelName.IndexOf(".xls") > 0)
{
workbook = new HSSFWorkbook(fs);
}
#endregion
#region 核驗數值列資料是否為空 並記錄為空索引行 修改Excel指定索引行後重新儲存
sheet = workbook.GetSheetAt(0);/*指定資料格式只讀取索引值為0的第一個sheet*/
IRow row = null;
for(int j =1;j < sheet.PhysicalNumberOfRows && sheet.GetRow(j) != null;j++)/*j=1 從索引的第一行開始過濾掉表頭*/
{
row = sheet.GetRow(j);
if (string.IsNullOrWhiteSpace(row.GetCell(5).ToString()))/*驗證數值非空*/
{
questionRowIndex.Add(j);
ICellStyle style = workbook.CreateCellStyle();
style.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Red.Index;
style.FillPattern = FillPattern.SolidForeground;
style.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.Red.Index;
/*修改指定單元格樣式 如果要修改行樣式則需要將row.Cells.Count迴圈出來,挨個設定!*/
row.Cells[5].CellStyle = style;
//for(int i=0;i<row.Cells.Count;i++)
//{
//row.Cells[i].CellStyle = style;
//}
/*重新修改檔案指定單元格樣式*/
FileStream fs1 = System.IO.File.OpenWrite(readExcelPath);
workbook.Write(fs1);
fs1.Close();
}
}
#endregion
}