对于数据量较大的表格,需要计算一些特殊数值时,我们通过运用公式能有效提高我们数据处理的速度和效率,对于后期数据的增删改查等的批量操作也很方便。此外,对于某些数值的信息来源,我们也可以通过读取数据中包含的公式来获取。下面的示例中将分享通过C# 来创建、读取Excel公式的方法。
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C#
using Spire.Xls;
namespace CreateFormula
{
class Program
{
static void Main(string[] args)
{
//新建一个工作簿,获取第一个工作表
Workbook workbook = new Workbook();
Worksheet sheet = workbook.Worksheets[0];
//初始化currentRow、currentFormula
int currentColumn = 1;
int currentRow = 1;
string currentFormula = string.Empty;
//设置1、2列列宽
sheet.SetColumnWidth(1, 20);
sheet.SetColumnWidth(2, 12);
//写入测试数据
sheet.Range[currentColumn, 1].Value = "测试数据:";
sheet.Range[currentColumn, 2].NumberValue = 10;
sheet.Range[currentColumn, 3].NumberValue = 20;
sheet.Range[currentColumn, 4].NumberValue = 30;
sheet.Range[currentColumn, 5].NumberValue = 40;
sheet.Range[currentColumn, 6].NumberValue = 50;
//写入文本并设置区域格式
currentRow += 2;
sheet.Range[currentRow, 1].Value = "公式";
sheet.Range[currentRow, 2].Value = "结果";
CellRange range = sheet.Range[currentRow, 1, currentRow, 2];
range.Style.Font.IsBold = true;
range.Style.KnownColor = ExcelColors.LightGreen1;
range.Style.FillPattern = ExcelPatternType.Solid;
range.Style.Borders[BordersLineType.EdgeBottom].LineStyle = LineStyleType.Medium;
//算术运算
currentFormula = "=1/2+3*4";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//日期函数
currentFormula = "=Today()";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
sheet.Range[currentRow, 2].Style.NumberFormat = "YYYY/MM/DD";
//时间函数
currentFormula = "=NOW()";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
sheet.Range[currentRow, 2].Style.NumberFormat = "H:MM AM/PM";
//IF逻辑函数
currentFormula = "=IF(B1=5,\"Yes\",\"No\")";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//PI函数
currentFormula = "=PI()";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//三角函数
currentFormula = "=SIN(PI()/6)";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//计数函数
currentFormula = "=Count(B1:F1)";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//求最大值函数
currentFormula = "=MAX(B1:F1)";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//平均值函数
currentFormula = "=AVERAGE(B1:F1)";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//求和函数
currentFormula = "=SUM(B1:F1)";
sheet.Range[++currentRow, 1].Text = currentFormula;
sheet.Range[currentRow, 2].Formula = currentFormula;
//保存文档并打开
workbook.SaveToFile("Excel公式.xlsx", FileFormat.Version2013);
System.Diagnostics.Process.Start("Excel公式.xlsx");
}
}
}
公式创建结果(如下图):
C#
using Spire.Xls;
using System;
namespace ReadFormula
{
class Program
{
static void Main(string[] args)
{
//实例化一个Workbook
Workbook workbook = new Workbook();
//加载测试文档
workbook.LoadFromFile("test.xlsx");
//获取第一个工作表
Worksheet sheet = workbook.Worksheets[0];
//遍历[B1:B13]的单元格
foreach (var cell in sheet.Range["B1:B13"])
{
//判断是否含有公式
if (cell.HasFormula)
{
//输出含有公式的单元格及公式
string certainCell = String.Format("Cell[{0},{1}]", cell.Row, cell.Column);
Console.WriteLine(certainCell + " 含有公式: " + cell.Formula);
}
}
Console.ReadLine();
}
}
}
公式读取结果(如下图)
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