如何编写sql语句，用于根据MVC3中从数据库到Excel的条件导出数据

时间：2013-08-12 11:25:05

标签： asp.net-mvc-3 export-to-excel

我正在开发一个功能“将数据从sql server数据库导出到MVC3中的Excel”，我想根据特定条件选择数据，然后将所选数据导出到excel。现在我已经实现了以下功能，例如，在屏幕截图中，如果我选择“将在本月过期”然后提交，它将只显示本月将在excel中过期的成员，而不是所有成员。如果我在日历中选择两个日期，则仅显示在两个选定日期之间过期的成员。另外，我可以根据sql语句将数据从数据库导出到excel。问题是我可以写sql语句将所有数据从数据库导出到excel，而不是基于条件（本周到期，本月到期......）。我发布了我的代码。有任何想法吗？非常感谢。 My function shotscreen

续订日期控制器 

      public ActionResult Index()
    {
        ViewData["BreadCrumbs"] = new List<BreadCrumb> { 
            new BreadCrumb { Url = UrlMaker.ToDefault(), Title = "Home" },
            new BreadCrumb {Url = UrlMaker.ToReportsArea(), Title = "Reports Area"},
            new BreadCrumb { Title = "Renewal" } };

        List<string> expiryOptions = new List<string>();
        expiryOptions.Add("Will expire this month");
        expiryOptions.Add("Expire next month");
        expiryOptions.Add("Will expire this week");
        expiryOptions.Add("Expire next week");
        expiryOptions.Add("Have expired");
        ViewBag.ExpiryOptions = new SelectList(expiryOptions);
        ViewBag.a = 0;
        ViewBag.ExpiryDate = string.Empty;
        return View();
    }


    [HttpPost]
    public ActionResult Index(string option, DateTime? expireFrom, DateTime? expireTo)
    {
        ViewData["BreadCrumbs"] = new List<BreadCrumb> { 
            new BreadCrumb { Url = UrlMaker.ToDefault(), Title = "Home" },
            new BreadCrumb {Url = UrlMaker.ToReportsArea(), Title = "Reports Area"},
            new BreadCrumb { Title = "Renewal" } };

        Session["option"] = option;

        List<string> expiryOptions = new List<string>();
        expiryOptions.Add("will expire this month");
        expiryOptions.Add("expire next month");
        expiryOptions.Add("will expire this week");
        expiryOptions.Add("expire next week");
        expiryOptions.Add("have expired");
        ViewBag.ExpiryOptions = new SelectList(expiryOptions);

        ViewBag.a = 1;


        if (expireFrom != null && expireTo != null)
        {
            ViewBag.ExpiryDate = (memberRepository.renewalDateQuery((DateTime)expireFrom, (DateTime)expireTo));
        }
        else
        {
            ViewBag.ExpiryDate = memberRepository.RenewalQuery(option);
        }


        return View();
    }



     private DataTable GetData(SqlCommand cmd)
    {
        DataTable dt = new DataTable();
        String strConnString = System.Configuration.ConfigurationManager.
             ConnectionStrings["ProActiveMembershipDB"].ConnectionString;
        SqlConnection con = new SqlConnection(strConnString);
        SqlDataAdapter sda = new SqlDataAdapter();
        cmd.CommandType = CommandType.Text;
        cmd.Connection = con;
        try
        {
            con.Open();
            sda.SelectCommand = cmd;
            sda.Fill(dt);
            return dt;
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            con.Close();
            sda.Dispose();
            con.Dispose();
        }
    }



   public ActionResult ExportToExcel()
    {

        //Get the data from database into datatable

        string strQuery = "select MemberType,OrganisationName, Forename, Surname, Email, ExpiryDateofScheme  from Members ";
        SqlCommand cmd = new SqlCommand(strQuery);
        DataTable dt = GetData(cmd);

        //Create a dummy GridView
        System.Web.UI.WebControls.GridView GridView1 = new System.Web.UI.WebControls.GridView();
        GridView1.AllowPaging = false;
        GridView1.DataSource = dt;
        GridView1.DataBind();


       Response.Clear();
       Response.Buffer = true;
       Response.AddHeader("content-disposition",
         "attachment;filename=RenewalMemberList.xls");
       Response.Charset = "";
       Response.ContentType = "application/vnd.ms-excel";
        StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);

        //Change the Header Row back to white color
        GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");

        //Apply style to Individual Cells
        GridView1.HeaderRow.Cells[0].Style.Add("background-color", "green");
        GridView1.HeaderRow.Cells[1].Style.Add("background-color", "green");
        GridView1.HeaderRow.Cells[2].Style.Add("background-color", "green");
        GridView1.HeaderRow.Cells[3].Style.Add("background-color", "green");
        GridView1.HeaderRow.Cells[4].Style.Add("background-color", "green");
        GridView1.HeaderRow.Cells[5].Style.Add("background-color", "green");  

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            GridViewRow row = GridView1.Rows[i];

            //Change Color back to white
            row.BackColor = System.Drawing.Color.White;


            //Apply text style to each Row
            GridView1.Rows[i].Attributes.Add("class", "textmode");

            //Apply style to Individual Cells of Alternating Row
            if (i % 2 != 0)
            {
                row.Cells[0].Style.Add("background-color", "#AAE92A");
                row.Cells[1].Style.Add("background-color", "#AAE92A");
                row.Cells[2].Style.Add("background-color", "#AAE92A");
                row.Cells[3].Style.Add("background-color", "#AAE92A");
                row.Cells[4].Style.Add("background-color", "#AAE92A");
                row.Cells[5].Style.Add("background-color", "#AAE92A");
            }

        }
        GridView1.RenderControl(hw);

        //style to format numbers to string
        string style = @"<style> .textmode { mso-number-format:\@; } </style>";
        Response.Write(style);
        Response.Output.Write(sw.ToString());
        Response.Flush();
        Response.End();

        return View();
    }
}

索引视图 

 @model IEnumerable<ProActiveMembership.Areas.Members.Models.Member>
 @{
ViewBag.Title = "Report: Renewal Reports";
Layout = Layout = "~/Views/Shared/ProActive.cshtml";;

 }

<h2 class="PageTitle">
<u>Renewal Report</u></h2>
@using (Html.BeginForm("Index", "RenewalDate", FormMethod.Post, new { id = "form" }))
{
<br />
<p>choose from one of the following options:</p>
<p>
    I want to see members that: @Html.DropDownList("option", (SelectList)ViewBag.ExpiryOptions, "choose...", new { id = "ddl" })
</p>
}

@using (Html.BeginForm("Index", "RenewalDate", FormMethod.Post))
{

// below date1 is expirefrom date and date2 is the expireto date 
<p>
expire between @Html.TextBox("expireFrom", "", new { id = "date1" }) and     @Html.TextBox("expireTo", "", new { id = "date2" })
</p> 
<input type="submit" value="submit" />
<br />
 }    
  <div class="scrollable">
    <table class="RenewalDateReports">
      <tr class="RenewalDateReports"> 
        <th class="RenewalDateReports">
            Name
        </th>
        <th class="RenewalDateReports">
            Expiry Date
        </th>
        <th class="RenewalDateReports">
            Membership with
        </th>
        <th class="RenewalDateReports">
            Grade
        </th>
        <th class="RenewalDateReports">
            Action
        </th>
    </tr>
    @foreach (var item in ViewBag.ExpiryDate)
    { 
        <tr>
            <td class="RenewalDateReports">
                @item.Forename @item.Surname
                @item.OrganisationName
            </td>
            <td class="RenewalDateReports">
                @item.ExpiryDateofScheme.ToShortDateString()
            </td>
            <td class="RenewalDateReports">
                @item.MembershipGrade.Organisation.OrganisationName
            </td>
            <td class="RenewalDateReports">
                @item.MembershipGrade.GradeName
            </td>
            <td class="RenewalDateReports">
               @* @Html.ActionLink("Notify", "###", new { id = item.MemberID })*@

                @Html.ActionLink("Notify", "Communication", "Member", new { Area = "Members" }, null)


            </td>
        </tr>

       @*  @Html.ActionLink("Export to Excel", "ExportToExcel", "RenewalDate")*@

    }
</table>
</div>    

<br />
@Html.ActionLink("Export to Excel", "ExportToExcel", "RenewalDate")
<br />      

   <script type="text/javascript">
$(document).ready(function () {
    $("#ddl").change(function () {
        var form = document.getElementById("form");
        form.submit();
    });


    $(function () {
        $("#date1").datepicker({
            dateFormat: 'dd/mm/yy',
            firstDay: 1,
            showOn: "button",
            buttonImage: "../../assets/images/calendar.gif",
            buttonImageOnly: true

        });
    });

    $(function () {
        $("#date2").datepicker({
            dateFormat: 'dd/mm/yy',
            firstDay: 1,
            showOn: "button",
            buttonImage: "../../assets/images/calendar.gif",
            buttonImageOnly: true

          });
       });
     });
  </script>

ExportToExcel查看 

 @{
  ViewBag.Title = "ExportToExcel";
 }

<h2>ExportToExcel</h2>

1 个答案:

答案 0 :(得分：0)

到目前为止，您尝试将哪些内容导出为ex​​cel。有不同的dll可用于与Excel交互“EPPLUS”就是其中之一。您可以在

上找到它的教程

http://www.jimmycollins.org/blog/?p=547

您可以通过存储过程或查询使用您的条件检索数据，然后可以将该数据绑定到Excel。

编辑部分： - 用于jquery ajax调用

       $('#Exportbtn').click(function () {
                       var drpdownval= $("#DROPDOWN").val();//This Is your selected value
                           $.ajax({
                        cache:false,

                        type: "POST",

                        url: "@(Url.Action("ExportProducts", "Order"))",

//Method and controller to which u r going to pass the data
                        data:"drpdownval=" + drpdownval,

                        success: function (data) {
                            //Write your success code here after returning from ajax method
        //If you have returned view you can assign view to some div
                        },
                        error:function (xhr, ajaxOptions, thrownError){

                        }  
                    });

                    });

现在在您的控制器中，您需要编写方法

   public ActionResult ExportProducts(string drpdownval)
    {
    //Your Logic goes here

    return View("ViewName","ModelName");
}

//请注意，此调用仅返回给ajax调用。如果没有理解则退出注释

请检查Html.ActionLink的所有重载您应该为某个变量赋值

试试这个

   @Html.ActionLink(
        "Export To Excel",                                                  // linkText
        "ExportToExcel",                                             // actionName
        "Export",                                                   // controllerName
        new {                                                     // routeValues passes to action
            blogPostId = blogPostId, 
            replyblogPostmodel = Model, 

        },
        null                                                      // htmlAttributes
    )

发布此参考作为参考使用您的参数。

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