[英]Reading data from excel in to Json object in c#
我有一個Excel工作表,其中包含一組包含數據的列和行。 我想將完整的Excel工作表數據作為JSON讀取,以便稍后我可以將JSON寫入文件。 我怎樣才能做到這一點?
樣本數據:
Names RegNo Description
ABCD 12345 DemoInfo
XYZ 67890 DemoInfo2
通過ADO.NET OleDb提供程序連接到Excel工作表。 然后,使用C#的JSON庫生成JSON字符串,並保存文件。 (或者使用JavascriptSerialzer,如@boades所建議的那樣)。
此示例使用JSON.NET庫。
using System;
using System.Linq;
using System.Data.OleDb;
using System.Data.Common;
using Newtonsoft.Json;
using System.IO;
namespace ConsoleApplication1 {
class Program {
static void Main(string[] args) {
var pathToExcel = @"C:\path\to\excel\file.xlsx";
var sheetName = "NameOfSheet";
var destinationPath = @"C:\path\to\save\json\file.json";
//Use this connection string if you have Office 2007+ drivers installed and
//your data is saved in a .xlsx file
var connectionString = $@"
Provider=Microsoft.ACE.OLEDB.12.0;
Data Source={pathToExcel};
Extended Properties=""Excel 12.0 Xml;HDR=YES""
";
//Creating and opening a data connection to the Excel sheet
using (var conn=new OleDbConnection(connectionString)) {
conn.Open();
var cmd=conn.CreateCommand();
cmd.CommandText = $"SELECT * FROM [{sheetName}$]";
using (var rdr=cmd.ExecuteReader()) {
//LINQ query - when executed will create anonymous objects for each row
var query = rdr.Cast<DbDataRecord>().Select(row => new {
name = row[0],
regno = row[1],
description = row[2]
});
//Generates JSON from the LINQ query
var json = JsonConvert.SerializeObject(query);
//Write the file to the destination path
File.WriteAllText(destinationPath, json);
}
}
}
}
}
鏈接:
將其另存為CSV。 然后使用File.ReadLines枚舉每一行,然后使用String.Split讀取每一列。 將數據格式化為JSON字符串並將其保存到文件中。
您可以嘗試http://exceldatareader.codeplex.com/庫。 您必須從excel讀取數據到某個對象,然后使用JavaScriptSerializer將其轉換為json
public class MyRow
{
public string Cell1;
public string Cell2;
public string Cell3;
}
class Program
{
static void Main()
{
var list = new List<MyRow>();
FileStream stream = File.Open(filePath, FileMode.Open, FileAccess.Read);
//1. Reading from a binary Excel file ('97-2003 format; *.xls)
IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream);
//...
//2. Reading from a OpenXml Excel file (2007 format; *.xlsx)
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
//5. Data Reader methods
while (excelReader.Read())
{
var obj = new MyRow
{
Cell1 = excelReader.GetString(0),
Cell2 = excelReader.GetString(1),
Cell3 = excelReader.GetString(2),
}
list.Add(obj);
}
//6. Free resources (IExcelDataReader is IDisposable)
excelReader.Close();
var json = new JavaScriptSerializer().Serialize(list);
Console.WriteLine(json);
}
}
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