[英]Show Data from Excel Using C#
我的代碼在這里,但我無法獲得所需的結果
DataTable dtWB = new DataTable();
dtWB.Columns.Add("Name");
dtWB.Columns.Add("DOS");
dtWB.Columns.Add("CPT");
dtWB.AcceptChanges();
DataRow drWB = null;
// Auto-detect format, supports:
byte[] ExcelData = File.ReadAllBytes(AppDomain.CurrentDomain.BaseDirectory + path);
MemoryStream stream = new MemoryStream(ExcelData);
using (var reader = ExcelReaderFactory.CreateReader(stream))
{
// Choose one of either 1 or 2:
// 1. Use the reader methods
do
{
while (reader.Read())
{
// reader.GetDouble(0);
}
} while (reader.NextResult());
// 2. Use the AsDataSet extension method
var result = reader.AsDataSet();
//The result of each spreadsheet is in result.Tables
var Tables = result.Tables;
var CT = Tables.Count;
DataTable WBdt = Tables[1];
}
我在 excel 表中有一個數據,例如https://i.stack.imgur.com/nZl4K.png
我想使用 c# 顯示這樣的數據。 https://i.stack.imgur.com/BjzZd.png
您的“代碼”僅包含ExcelDataReader
文檔示例。 這會將數據集解析為具有您請求的格式的集合。
var records = new Dictionary<string, Dictionary<DateTime, double?>>();
using (var stream = File.Open(filePath, FileMode.Open, FileAccess.Read))
{
using (var reader = ExcelReaderFactory.CreateReader(stream))
{
var firstTable = reader.AsDataSet().Tables[0];
for (int i = 1; i < firstTable.Rows.Count; i++)
{
string name = firstTable.Rows[i].Field<string>(0);
var dt_values = new Dictionary<DateTime, double?>();
for (int j = 1; j < firstTable.Columns.Count; j++)
{
DateTime dt = firstTable.Rows[0].Field<DateTime>(j);
double? value = firstTable.Rows[i].Field<double?>(j);
dt_values.Add(dt, value);
}
records.Add(name, dt_values);
}
}
}
var formatted_data = records.SelectMany(x => x.Value.Select(y => new
{
Name = x.Key,
Dos = y.Key.ToShortDateString(),
CPT = y.Value
}));
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