使用占位符从上传的 excel 文件生成字符串 asp.net mvc 使用 EPPlus 库

Question

我正在编写一个应用程序，用户可以在其中上传一个 excel 文件，其中包含我不知道列数的联系信息。 sheet 可以有尽可能多的列和行。我想要实现的是，用户可以通过使用基于零的索引作为 columns.Take 的占位符构建消息来向 sheet 中的每个联系人发送消息，例如 sheet下面假设第一行代表 headers

用户将像这样构建他的消息 Dear {0} {1}, your age is {2} and your email is {3} 其中 {0} 是第一列的标题，{1} 是第二列的标题，等等。这应该将消息输出为 Dear Jon Snow, your age is 27 and your email is jsnow@winterfell.com。我想对 sheet 中的每一行执行此操作。我正在使用 EPplus 来解析 excel sheet.This 是我尝试过的。

static void Main(string[] args)
{
    var path = "C:\Users\RIDWAN\Desktop\ExcelFile.xlsx";
    FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);            
    using (var package = new ExcelPackage(fs))
    {
        var currentSheet = package.Workbook.Worksheets;//get the work sheet
        var workSheet = currentSheet.First();//get the first sheet
        var noOfCol = workSheet.Dimension.End.Column; //get the no of col in the active sheet
        var noOfRow = workSheet.Dimension.End.Row; /get the no of row in the active sheet
        var placeholder = "{FirstName}";
        for (int i = 2; i <= noOfRow; i++)
        {
            for (int j = 1; j <= noOfCol; j++)
            {
                var message = String.Format("Dear {0} {1}, your age is {2} and your email is {3}", workSheet.GetValue(i, j));
                Console.Write(message);
            }
        }
        Console.ReadLine();
    }

}

我想使用占位符输出格式正确的消息，以生成具有相应占位符值的消息。

Answer 1

似乎你只需要一个 for 循环，因为 cols 的数量是已知的 - 它的行是这里的变体。简单地做这样的事情：

using (var package = new ExcelPackage(fs))
{
    var currentSheet = package.Workbook.Worksheets;//get the work sheet
    var workSheet = currentSheet.First();//get the first sheet
    var noOfCol = workSheet.Dimension.End.Column; //get the no of col in the active sheet
    var noOfRow = workSheet.Dimension.End.Row; // get the no of row in the active sheet
    var placeholder = "{FirstName}";
    for (int i = 2; i <= noOfRow; i++)
    {
        var vals = workSheet.Cells[i, 1, i, noOfCol].Select(c => c.Value).ToArray();
        var message = String.Format("Dear {0} {1}, your age is {2} and your email is {3}", vals);
        Console.WriteLine(message);
    }
}

给这个整数输出：

Dear Jon Snow, your age is 27 and your email is jsnow@winderfell.com
Dear Arya Stark, your age is 18 and your email is aryastark@winterfell.com
Dear Eddard Stark, your age is 50 and your email is lordeddard@winterfell.com

使用占位符从上传的 excel 文件生成字符串 asp.net mvc 使用 EPPlus 库

Use Placeholders to generate string from uploaded excel File in asp.net mvc using EPPlus Library

c#

asp.net

asp.net-mvc

epplus