从C＃读取Excel文件 [英] Reading Excel files from C#

问题描述

有没有一个免费的或开源的库可以直接从C＃程序读取Excel文件（.xls）？

它不需要太花哨，只是选择工作表并将数据读为字符串。到目前为止，我一直在使用Excel的导出到Unicode文本功能，并解析生成的（制表符分隔）文件，但是我想消除手动步骤。

解决方案

  var fileName = string.Format（{0} \\fileNameHere，Directory.GetCurrentDirectory（））; 
 var connectionString = string.Format（Provider = Microsoft.Jet.OLEDB.4.0; data source = {0};扩展属性= Excel 8.0;，fileName）; 
 
 var adapter = new OleDbDataAdapter（SELECT * FROM [workSheetNameHere $]，connectionString）; 
 var ds = new DataSet（）; 
 
 adapter.Fill（ds，anyNameHere）; 
 
 DataTable data = ds.Tables [anyNameHere]; 
  

这是我通常使用的。这有点不一样，因为我通常在表的编辑中粘贴一个AsEnumerable（）：

  var data = ds.Tables [ anyNameHere] AsEnumerable（）; 
  

这样，我可以使用LINQ从字段中搜索和构建结构。

  var query = data.Where（x => x.Field< string>（phoneNumber）！= string.Empty）.Select（x => 
 new MyContact 
 {
 firstName = x.Field< string>（First Name），
 lastName = x.Field< string>（Last Name ），
 phoneNumber = x.Field< string>（电话号码），
}）; 
  

Is there a free or open source library to read Excel files (.xls) directly from a C# program?

It does not need to be too fancy, just to select a worksheet and read the data as strings. So far, I've been using Export to Unicode text function of Excel, and parsing the resulting (tab-delimited) file, but I'd like to eliminate the manual step.

解决方案

var fileName = string.Format("{0}\\fileNameHere", Directory.GetCurrentDirectory());
var connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", fileName);

var adapter = new OleDbDataAdapter("SELECT * FROM [workSheetNameHere$]", connectionString);
var ds = new DataSet();

adapter.Fill(ds, "anyNameHere");

DataTable data = ds.Tables["anyNameHere"];

This is what I usually use. It is a little different because I usually stick a AsEnumerable() at the edit of the tables:

var data = ds.Tables["anyNameHere"].AsEnumerable();

as this lets me use LINQ to search and build structs from the fields.

var query = data.Where(x => x.Field<string>("phoneNumber") != string.Empty).Select(x =>
                new MyContact
                    {
                        firstName= x.Field<string>("First Name"),
                        lastName = x.Field<string>("Last Name"),
                        phoneNumber =x.Field<string>("Phone Number"),
                    });

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