[英]Reading Excel file using C# and cleaning up the data
這是我第一次這樣做,因此歡迎您提供有關最佳做法的任何指導。
我試圖從excel文件中獲取數據,並且需要處理從我獲取的數據中獲取的幾列。 我需要確保單元格中沒有換行符和其他特殊字符,並且某些列不是空白。
經過一番谷歌搜索后,我已經設法獲得了這段代碼,直到填充適配器為止。
在LINQ部分中,我試圖在進一步處理數據之前僅過濾出我需要的列,但這就是我遇到的問題。
我試圖為每一行創建一個新訂單。 我有一個名為Order的類,該類現在具有嘗試填充的屬性。
class Program
{
static void Main(string[] args)
{
var fileName = @"C:\Users\metesting\Bulkuploader\POS ORDERS2016.xlsx";
var connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";";
var adapter = new OleDbDataAdapter("SELECT * FROM [report$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds, "anyNameHere");
var data = ds.Tables["anyNameHere"].AsEnumerable();
var query = data.Where(x => x.Field<string>("Store POS Order Ref") != string.Empty).Select(x => new Order
{
CPMOrderNo = x.Field<string>("Store POS Order Ref"),
StoreName = x.Field<string>("Store Name"),
Street = x.Field<string>("Street"),
Town = x.Field<string>("Town"),
County = x.Field<string>("County"),
PostCode = x.Field<string>("Post Code"),
POSOrder = x.Field<string>("POS Order: Order Name"),
OrderItemCode = x.Field<string>("Order Item: POS Code"),
Quantity = x.Field<int>("Quantity"),
AuthInStoreBy = x.Field<string>("Authorised In Store By")
});
}
}
訂單類如下:
public class Order
{
public string CPMOrderNo { get; set; }
public string StoreName { get; set; }
public string Street { get; set; }
public string Town { get; set; }
public string County { get; set; }
public string PostCode { get; set; }
public string POSOrder { get; set; }
public string OrderItemCode { get; set; }
public int Quantity { get; set; }
public string AuthInStoreBy { get; set; }
}
我不太確定LINQ語句的語法! 還在學習。
這是我進入調試器的var查詢部分時顯示的錯誤。 請問我該如何工作?
無效的強制轉換異常來自以下行:
Quantity = x.Field<int>("Quantity"),
以下更改解決了該問題:
(int)x.Field<double>("Quantity")
為了得到我的答案,我試圖模仿您的Excel文件,如下圖所示: ReplicatedExcelFile 。 然后,我將您的代碼修改如下:
static void Main(string[] args)
{
var fileName = @"C:/Users/Popper/Desktop/Stackoverflow/StackoverflowQuestion1.xlsx";
var connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";";
var adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds, "anyNameHere");
var data = ds.Tables["anyNameHere"].AsEnumerable();
List<Order> orderList = new List<Order>();
Order pickedOrder;
foreach (var x in data)
{
if (x.Field<string>("Store POS Order Ref") != string.Empty && x.Field<string>("Store POS Order Ref") != null)
{
pickedOrder = new Order();
pickedOrder.CPMOrderNo = x.Field<string>("Store POS Order Ref");
pickedOrder.StoreName = x.Field<string>("Store Name");
pickedOrder.Street = x.Field<string>("Street");
pickedOrder.Town = x.Field<string>("Town");
pickedOrder.County = x.Field<string>("County");
pickedOrder.PostCode = x.Field<string>("Post Code");
pickedOrder.POSOrder = x.Field<string>("POS Order: Order Name");
pickedOrder.OrderItemCode = x.Field<string>("Order Item: POS Code");
pickedOrder.Quantity = (int)x.Field<double>("Quantity");
pickedOrder.AuthInStoreBy = x.Field<string>("Authorised In Store By");
orderList.Add(pickedOrder);
}
}
}
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