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論壇。ExcelDataReader - 什麼是數據讀取器方法部分用於?
引用:https://github.com/ExcelDataReader/ExcelDataReader
C# code :
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);
//3. DataSet - The result of each spreadsheet will be created in the result.Tables
DataSet result = excelReader.AsDataSet();
//4. DataSet - Create column names from first row
excelReader.IsFirstRowAsColumnNames = true;
DataSet result = excelReader.AsDataSet();
//5. Data Reader methods
while (excelReader.Read())
{
//excelReader.GetInt32(0);
}
//6. Free resources (IExcelDataReader is IDisposable)
excelReader.Close();
我的代碼:
private void dataGridView1_DragDrop(object sender, DragEventArgs e)
{
Debug.WriteLine("OnDragDrop");
if (validData)
{
try
{
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. DataSet - The result of each spreadsheet will be created in the result.Tables
excelReader.IsFirstRowAsColumnNames = true;
DataSet result = excelReader.AsDataSet();
//3. Data Reader methods
while (excelReader.Read())
{
//excelReader.GetInt32(0);
}
dataGridView1.DataSource = result.Tables[0];
//6. Free resources (IExcelDataReader is IDisposable)
excelReader.Close();
createEmployees(result);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
我的問題是,是用來做什麼的 '數據讀取方法' 部分?
我最初的想法是它是在數據讀入DataSet之前轉換數據的。從步進代碼中,我看到DataSet結果已經在步驟3/4中設置,因此沒有發生數據轉換或按摩。鑑於此,我不確定excelReader.Read()代碼的用途。
看起來像他們的意思是3,4 *或* 5,而不是3,4 *和* 5。同樣的步驟1和2,你不能同時使用兩個文件。 –
@PieterWitvoet謝謝你,更有意義。文件中不清楚。 – HappyCoding