1，從數(shù)據(jù)庫(kù)讀取數(shù)據(jù)，然后導(dǎo)出CSV文件

[HttpPost]public FileResult ExportCSV(){var apps =。。。。//linq以及EF從數(shù)據(jù)庫(kù)查詢數(shù)據(jù) MemoryStream ms = new MemoryStream();StreamWriter sw = new StreamWriter(ms);var csv = new CsvWriter(sw);foreach (var pp in apps){csv.WriteField(0); //set to '0' csv.WriteField(""); //set empty space csv.WriteField("haha");csv.NextRecord();}sw.Flush();ms.Position = 0;return File(ms, "text/comma-separated-values", "Export.csv");}

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2，頁(yè)面上傳CSV文件，服務(wù)器讀取文件內(nèi)容

@using (Html.BeginForm("ImportCSV", "ExportImport", FormMethod.Post, new { enctype = "multipart/form-data" })) {<div class="row row-margin"><div class="col-lg-4"><div class="form-group"><input type="file" name="csvToUpload" id="csvToUpload" accept=".csv"></div></div><div class="col-lg-6"></div><div class="col-lg-2 pull-right"><button type="submit" class="btn btn-default btn-space-right btn-space-left"><span class="glyphicon glyphicon-import"></span> Import</button><button type="button" class="btn btn-default pull-right" οnclick="backHomePage();"><span class="glyphicon glyphicon-step-backward"></span> Quit</button></div></div> }

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[HttpPost]public JsonResult ImportCSV(HttpPostedFileBase csvToUpload){using (var textReader = new StreamReader(csvToUpload.InputStream)){var csv = new CsvReader(textReader);while (csv.Read()){var field = csv.GetField<string>(0);}}.......}

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參考：

CVSHELPER 使用指南

ASP.NET MVC 導(dǎo)出CSV文件

ASP.NET MVC：通過(guò) FileResult 向 瀏覽器 發(fā)送文件

轉(zhuǎn)載于:https://www.cnblogs.com/AlvinLiang/p/9200554.html

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