【Day23】在Visual Studio 2017 匯出Excel

2019 iT 邦幫忙鐵人賽

DAY 23

自我挑戰組

What a good thing we lose? What a bad thing we knew?系列第 23 篇

2019鐵人賽 visual studio c#

黑暗小兵

2018-11-06 22:56:41

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大家好，今天跟大家學習如何在匯出Excel檔案的功能。

Step 1. Controller 建立 Excel(要匯出的頁面)、ExcelExport(下載的頁面)

  public ActionResult Excel()
        {
            return View();
        }


    public ActionResult ExportExcel(FormCollection form)
    {
        string strHtml = form["hHtml"];
        strHtml = HttpUtility.HtmlDecode(strHtml);//Html解碼
        byte[] b = System.Text.Encoding.Default.GetBytes(strHtml);//字串轉byte陣列
        return File(b, "application/vnd.ms-excel", "這是Excel.xls");//輸出檔案給Client端
        return View();
    }

Step 2. View

Excel.cshtml

    <!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <script type="text/javascript" src="@Url.Content("~/Scripts/jquery-2.0.0.min.js")"></script>
    <script type="text/javascript">
        function exportExcel() {

            var sHtml = htmlEncode($("#MyTable")[0].outerHTML);//做html編碼

            $("input[name='hHtml']").val(sHtml);

            //表單提交
            $("form[name='myForm']").submit();
        }
        //↓出自：http://stackoverflow.com/questions/1219860/javascript-jquery-html-encoding
        function htmlEncode(value) {
            //create a in-memory div, set it's inner text(which jQuery automatically encodes)
            //then grab the encoded contents back out.  The div never exists on the page.
            return $('<div/>').text(value).html();
        }
    </script>
</head>
<body>
    <table width="100%" border="1" cellpadding="0" cellspacing="0" id="MyTable">
        <thead>
            <tr>
                <th>編號</th>
                <th>名稱</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>1</td>
                <td>測試1</td>
            </tr>
            <tr>
                <td>2</td>
                <td>測試2</td>
            </tr>
            <tr>
                <td>3</td>
                <td>測試3</td>
            </tr>
        </tbody>
    </table>
    <br />
    <input type="button" value="匯出" onclick="exportExcel();" />
</body>
</html>

@using (Html.BeginForm("ExportExcel", "Home", FormMethod.Post, new { name = "myForm" }))
{
    @Html.Hidden("hHtml")

}

成功畫面