我正在尝试过滤发送到excel文件的行。我已经能够弄清楚如何将行数据导出到excel，但现在我需要将过滤后的数据发送到excel表，因为我添加了一个版本下拉列表。会发生什么是我从下拉列表中选择我想要查看的版本。
实施例。版本是12.1。
该视图仅会返回与其关联的版本号为12.1的数据。现在，当我想在excel文件中下载过滤的行时。我按下下载到excel文件按钮，它在excel文件中打开文件，除了它带来所有行而不是过滤的行。我认为我所要做的就是将相应的viewbag和viewdata变量添加到调用中，它会起作用，没有这样的运气，它仍然会保持每一行。你们可以看看我的代码并帮我弄清楚我做错了什么吗？我已经发布了以下代码，如果您需要更多信息以便更好地诊断，请告诉我，我会经常回来查看！谢谢你的帮助！
Excel控制器
[Authorize]
public ActionResult PaExcelOutput(string sortField, string currentFilter, string searchString, int? page, string VERS)
{
int pageNumber = (page ?? 1); // start page number
var PaExcel = from P in db.iamp_mapping
select P;
ViewBag.CurrentField = sortField = String.IsNullOrEmpty(sortField) ? "IAMP_PK" : sortField; // Provides the field to sort
ViewBag.CurrentFilter = searchString; // Provides the view with the current filter string
ViewData["SelectedVersion"] = VERS;
ViewData["currentFilter"] = currentFilter;
ViewData["VERS"] = new SelectList(PaExcel.Select(x => x.VERSION).Distinct());
if (!String.IsNullOrEmpty(VERS))
{
PaExcel = PaExcel.Where(p => p.VERSION.ToUpper().Contains(VERS));
}
if (Request.HttpMethod == "GET")
{
searchString = currentFilter; //sets the currentFilter equal to Searchstring
}
else
{
page = 1; // defaults to page 1
}
return View(PaExcel);
}
Excel输出视图
@model IEnumerable<DBFirstMVC.Models.iamp_mapping>
<!--This is what the MVC uses to output the correct rows to Excel -->
@{
Layout = null;
Response.AddHeader("Content-Type", "application/vnd.ms-excel");
}
<table>
<tr>
<th>
PA
</th>
<th>
VERSION
</th>
<th>
INVESTMENT AREA
</th>
<th>
MAJOR PROGRAM
</th>
<th>
PA SUB PROGRAM
</th>
<th>
VP
</th>
<th>
DIRECTOR
</th>
<th>
SPA
</th>
<th>
PA INITIATIVE
</th>
<th>
NOTES
</th>
<th>
TEAM BC
</th>
<th>
PA CC
</th>
<th>
PA DESCRIPTION
</th>
<th>
PA MANAGER
</th>
<th>
SPA CC
</th>
<th>
TIER 1
</th>
<th>
TIER 2
</th>
<th>
TIER 3
</th>
<th>
TIER 4
</th>
<th>
CFP VIEW NV/NONNV
</th>
<th>
CFP VIEW
</th>
<th>
CREATION DATE
</th>
<th>
CAF PROJECT NAME
</th>
<th>
CAF IA
</th>
<th>
CAF MP
</th>
<th>
CAF LEAD DIR
</th>
<th>
CAF LEAD MGR
</th>
<th>
CAF CC DIR
</th>
<th>
CAF CC MGR
</th>
<th>
CAF CC
</th>
<th>
CAF ID
</th>
<th>
CREATED ON
</th>
<th>
LAST EDITED
</th>
<th>
PROJECT STATUS
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.PA)
</td>
<td>
@Html.DisplayFor(modelItem => item.VERSION)
</td>
<td>
@Html.DisplayFor(modelItem => item.INVESTMENT_AREA)
</td>
<td>
@Html.DisplayFor(modelItem => item.MAJOR_PROGRAM)
</td>
<td>
@Html.DisplayFor(modelItem => item.PA_SUB_PROGRAM)
</td>
<td>
@Html.DisplayFor(modelItem => item.VP)
</td>
<td>
@Html.DisplayFor(modelItem => item.DIRECTOR)
</td>
<td>
@Html.DisplayFor(modelItem => item.SPA)
</td>
<td>
@Html.DisplayFor(modelItem => item.PA_INITIATIVE)
</td>
<td>
@Html.DisplayFor(modelItem => item.NOTES)
</td>
<td>
@Html.DisplayFor(modelItem => item.TEAM_BC)
</td>
<td>
@Html.DisplayFor(modelItem => item.PA_CC)
</td>
<td>
@Html.DisplayFor(modelItem => item.PA_DESCRIPTION)
</td>
<td>
@Html.DisplayFor(modelItem => item.PA_MANAGER)
</td>
<td>
@Html.DisplayFor(modelItem => item.SPA_CC)
</td>
<td>
@Html.DisplayFor(modelItem => item.TIER_1)
</td>
<td>
@Html.DisplayFor(modelItem => item.TIER_2)
</td>
<td>
@Html.DisplayFor(modelItem => item.TIER_3)
</td>
<td>
@Html.DisplayFor(modelItem => item.TIER_4)
</td>
<td>
@Html.DisplayFor(modelItem => item.CFP_VIEW_NV_NONNV)
</td>
<td>
@Html.DisplayFor(modelItem => item.CFP_VIEW)
</td>
<td>
@Html.DisplayFor(modelItem => item.CREATION_DATE)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_PROJECT_NAME)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_IA)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_MP)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_LEAD_DIR)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_LEAD_MGR)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_CC_DIR)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_CC_MGR)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_CC)
</td>
<td>
@Html.DisplayFor(modelItem => item.CAF_ID)
</td>
<td>
@Html.DisplayFor(modelItem => item.CREATED_ON)
</td>
<td>
@Html.DisplayFor(modelItem => item.LAST_EDITED)
</td>
<td>
@Html.DisplayFor(modelItem => item.PROJECT_STATUS)
</td>
</tr>
}
</table>
索引视图
<!--For stack overflow, This is where the actionlink that the download to excel button is located it is at the bottom of this code snippet called PAExcelOutput-->
@model PagedList.IPagedList<DBFirstMVC.Models.iamp_mapping>
@{
ViewBag.Title = "PA Mapping";
}
@using PagedList;
<h2 class="corporate sifr">@ViewBag.Title</h2>
<div class="crossband">
@using (Html.BeginForm())
{
<div class="lefty">
Filter by Version: @Html.DropDownList("VERS", null, "All", new { @class = "text" }) and by Criteria: @Html.TextBox("SearchString", "", new { @class = "text" })
</div>
<input type = "submit" class = "button1" value = "Go" />
}
<div class="righty">
@Html.ActionLink("Add a new PA to the database", "Create", "Pa", null, new { @class = "button1" })
</div>
</div>
<div class="crossband">
<div class="lefty">
Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber)
of @Model.PageCount
@if (Model.HasPreviousPage)
{
@Html.ActionLink("<<", "", new { page = 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink("< Prev", "", new { page = Model.PageNumber - 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
}
else
{
@:<<
@Html.Raw(" ");
@:< Prev
}
@if (Model.HasNextPage)
{
@Html.ActionLink("Next >", "", new { page = Model.PageNumber + 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink(">>", "", new { page = Model.PageCount, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
}
else
{
@:Next >
@Html.Raw(" ")
@:>>
}
</div>
<div class="righty">
Showing Records @Model.FirstItemOnPage to @Model.LastItemOnPage from @Model.TotalItemCount records
</div>
</div>
<table>
<tr>
<th>
@Html.ActionLink("PA", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "PA", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "PA")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "PA")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th>
@Html.ActionLink("MAJOR PROGRAM", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "MAJOR_PROGRAM", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "MAJOR_PROGRAM")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "MAJOR_PROGRAM")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th>
@Html.ActionLink("INVESTMENT AREA", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "INVESTMENT_AREA", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "INVESTMENT_AREA")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "INVESTMENT_AREA")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th>
@Html.ActionLink("Version", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "VERSION", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "VERSION")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "VERSION")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th>
@Html.ActionLink("VP/SR. DIRECTOR", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "VP", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "VP")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "VP")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th>
@Html.ActionLink("DIRECTOR/SR. MGR", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "DIRECTOR", VERS = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "DIRECTOR")
{<img id="asc" src="@Url.Content("~/Images/ico_tablesortoffset_asc.gif")" alt = "Asc Arrow" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "DIRECTOR")
{<img id="desc" src="@Url.Content("~/Images/ico_tablesortoffset_desc.gif")" alt = "Desc Arrow" />}
</th>
<th></th>
</tr>
@{
var row_class = "odd";
}
@foreach (var item in Model)
{
row_class = row_class == "odd" ? "even" : "odd";
<tr class="@row_class">
<td>
@Html.DisplayFor(modelItem => item.PA)
</td>
<td>
@Html.DisplayFor(modelItem => item.MAJOR_PROGRAM)
</td>
<td>
@Html.DisplayFor(modelItem => item.INVESTMENT_AREA)
</td>
<td>
@Html.DisplayFor(modelItem => item.VERSION)
</td>
<td>
@Html.DisplayFor(modelItem => item.VP)
</td>
<td>
@Html.DisplayFor(modelItem => item.DIRECTOR)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { id = item.IAMP_PK }) |
@Html.ActionLink("Delete", "Delete", new { id = item.IAMP_PK })
</td>
</tr>
}
</table>
<div class="crossband">
<div class="lefty">
Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber)
of @Model.PageCount
@if (Model.HasPreviousPage)
{
@Html.ActionLink("<<", "", new { page = 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink("< Prev", "", new { page = Model.PageNumber - 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
}
else
{
@:<<
@Html.Raw(" ");
@:< Prev
}
@if (Model.HasNextPage)
{
@Html.ActionLink("Next >", "", new { page = Model.PageNumber + 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink(">>", "", new { page = Model.PageCount, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, VERS = ViewBag.SelectedVersion })
}
else
{
@:Next >
@Html.Raw(" ")
@:>>
}
</div>
<div class="righty">
Showing Records @Model.FirstItemOnPage to @Model.LastItemOnPage from @Model.TotalItemCount records
</div>
</div>
<br/><br/>
<div class="righty">
@Html.ActionLink("Download in Excel Format", "PaExcelOutput", "Pa", new { VERS = ViewBag.SelectedVersion, currentFilter = ViewBag.currentFilter, sortOrder = ViewBag.CurrentSort, @class = "button1" })
</div>
答案 0 :(得分：1)
尝试使用此代码 Excel使用Interop ....
代码：
private System.Data.DataTable GetExcelData(string fileName)
{
Application excelApp = null;
Workbook excelWorkBook = null;
Worksheet excelSheet;
Range range;
try
{
//creat a Application object
excelApp = new Application();
// get WorkBook object
excelWorkBook = excelApp.Workbooks.Open(fileName, Missing.Value, Type.Missing,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
// get WorkSheet object
excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelWorkBook.Sheets[1];
int columnCount = excelSheet.UsedRange.Columns.Count;
excelSheet.Columns.ClearFormats();
excelSheet.Rows.ClearFormats();
columnCount = excelSheet.UsedRange.Columns.Count;
int rowsCount = excelSheet.UsedRange.Rows.Count;
Range last = excelSheet.Cells.SpecialCells(XlCellType.xlCellTypeLastCell, Type.Missing);
range = excelSheet.get_Range("A2", last);
object[,] values = (object[,])range.get_Value(Type.Missing);
System.Data.DataTable dt = new System.Data.DataTable("TicketUpload");
for (int c = 1; c <= columnCount; c++)
{
if (excelSheet.Cells[1, c].Value2 != null)
{
string columnName = excelSheet.Columns[c].Address;
Regex reg = new Regex(@"(\$)(\w*):");
if (reg.IsMatch(columnName))
{
Match match = reg.Match(columnName);
dt.Columns.Add(Convert.ToString(excelSheet.Cells[1, c].Value2).ToUpper(), typeof(string));
}
}
}
for (int i = 1; i <= values.GetLength(0); i++)
{
DataRow dr = dt.NewRow();
for (int j = 1; j <= dt.Columns.Count; j++)
{
if (values[i, j] == null)
dr[j - 1] = DBNull.Value;
else
dr[j - 1] = values[i, j];
}
dt.Rows.Add(dr);
}
range = null;
excelSheet = null;
if (excelWorkBook != null)
excelWorkBook.Close(false, Missing.Value, Missing.Value);
excelWorkBook = null;
if (excelApp != null)
excelApp.Quit();
excelApp = null;
return dt;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
range = null;
excelSheet = null;
if (excelWorkBook != null)
excelWorkBook.Close(false, Missing.Value, Missing.Value);
excelWorkBook = null;
if (excelApp != null)
excelApp.Quit();
excelApp = null;
}
}
答案 1 :(得分：0)
好的，我知道我刚刚在一小时前发布了这个问题，但我想出来了，希望其他人会发现这个答案有用，如果他们遇到同样的问题。我的excel调用的问题在于它有许多变量。
下载按钮的Action链接在
之前显示如下<div class="righty">
@Html.ActionLink("Download in Excel Format", "PaExcelOutput", "Pa", new { VERS = ViewBag.SelectedVersion, currentFilter = ViewBag.currentFilter, sortOrder = ViewBag.CurrentSort, @class = "button1" })
</div>
我把它改成了
<div class="righty">
@Html.ActionLink("Download in Excel Format", "PaExcelOutput", new { VERS = ViewBag.SelectedVersion, currentFilter = ViewBag.currentFilter, sortOrder = ViewBag.CurrentSort }, new { @class = "button1" })
</div>
通过从句子中删除"Pa"，我删除了导致视图包未将变量传递给excel输出的额外变量。
actionlink方法应如下所示
ActionLink(HtmlHelper, String, String, Object, Object)
现在我知道了...知道是战斗的一半！
答案 2 :(得分：0)
<div class="toggle-contents">
<table width="100%" id="qualitygoal">
<tr>
<td class="even" align="left">
@Html.Label("Project Id")
</td>
<td class="even" align="left">
@ViewBag.ProjectId
</td>
</tr>
<tr>
<td class="even" align="left">
@Html.Label("Project Name")
</td>
<td class="even" align="left">
@ViewBag.ProjectName
</td>
</tr>
<tr>
<td class="even" align="left">
@Html.Label("Upload File")
</td>
<td class="even" align="left">
<input type="file" name="file" /><br />
</td>
</tr>
</table>
<table width="100%" id="goal">
@using (Html.BeginForm("Index", "TicketDataUpload", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<br />
<div align="right">
<input type="submit" name="Submit" id="Submit" value="Upload" />
<input type="submit" name="Submit" value="NewTemplate" class="Add" id="NewTemplate" />
<input type="button" value="Close" class="cancel" />
</div>
}
</table>
</div>