我有一个来自Devexpress的gridview的网页，我已经实现了导出为pdf。但不知何故，我没有得到当前的过滤器，订单或组设置。我想知道如果我在代码中设置我的设置有什么问题，因为我已经google了很多，看起来这些选项应该在ExportToPdf中自动处理，只要你有设置。我的_GripPartial.cshtml：
@Html.DevExpress().GridView(TreeMenuTest.Controllers.LogViewController.GridViewSettings).Bind(TreeMenuTest.Controllers.LogViewController.DataSource).GetHtml()
_LogView.cshtml：
@using (Html.BeginForm("ExportToPDF", "LogView", FormMethod.Post))
{
<div id="buttonExport" class ="gridBtn">
<input type="submit" id ="ExportBtn" value="Export to pdf" />
</div>}
<div id="buttonReset" class ="gridBtn">
<input type="button" id ="ResetBtn" value="Reset Grid" onclick="javascript: ResetGrid()"/>
</div>
@Html.Action("Grid","LogView")
最后是LogViewController：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data.SqlClient;
using TreeMenuTest.Models;
using DevExpress.Web.Mvc;
using DevExpress.Web.ASPxGridView;
using System.Globalization;
using System.Web.UI.WebControls;
using DevExpress.Web.ASPxClasses;
using DevExpress.XtraPrinting;
using DevExpress.XtraPrintingLinks;
using System.IO;
using System.Drawing.Printing;
namespace TreeMenuTest.Controllers
{
public class LogViewController : Controller
{
//
// GET: /LogView/
public static List<LoggingEvent> DataSource;
static GridViewSettings exportGridViewSettings;
public static GridViewSettings GridViewSettings
{
get
{
if (exportGridViewSettings == null)
exportGridViewSettings = GetGridViewSettings();
return exportGridViewSettings;
}
}
static GridViewSettings GetGridViewSettings()
{
GridViewSettings settings = new GridViewSettings();
settings.Name = "GridView";
settings.CallbackRouteValues = new { Controller = "LogView", Action = "Grid" };
settings.Width = Unit.Percentage(100);
settings.Theme = "BlackGlass";
settings.KeyFieldName = "Id";
settings.SettingsPager.Visible = true;
settings.Settings.ShowGroupPanel = true;
settings.Settings.ShowFilterRow = true;
settings.SettingsBehavior.AllowSelectByRowClick = true;
settings.SettingsPager.PageSize = 25;
settings.SettingsBehavior.ColumnResizeMode = ColumnResizeMode.Control;
settings.Settings.ShowHeaderFilterButton = true;
settings.SettingsPopup.HeaderFilter.Height = 200;
settings.SettingsExport.Landscape = true;
settings.SettingsExport.TopMargin = 0;
settings.SettingsExport.LeftMargin = 0;
settings.SettingsExport.RightMargin = 0;
settings.SettingsExport.BottomMargin = 0;
settings.SettingsExport.PaperKind = PaperKind.A4;
settings.SettingsExport.RenderBrick = (sender, e) =>
{
if (e.RowType == GridViewRowType.Data && e.VisibleIndex % 2 == 0)
e.BrickStyle.BackColor = System.Drawing.Color.FromArgb(0xEE, 0xEE, 0xEE);
};
settings.Columns.Add("Id");
settings.Columns.Add(column =>
{
column.FieldName = "Ts";
column.Settings.AutoFilterCondition = AutoFilterCondition.Like;
});
settings.Columns.Add("LogLevelText").Caption = "Level";
settings.Columns.Add("LoggerName");
settings.Columns.Add("Message");
settings.Columns.Add("ThreadName").Caption = "Thread";
settings.Columns.Add("UserName");
settings.Columns.Add("Domain");
settings.Columns.Add("ClassName");
settings.Columns.Add("FileName");
settings.Columns.Add("MethodName").Caption = "Method";
settings.Columns.Add("LineNumber").Caption = "Line";
settings.Columns.Add("LocalIP");
settings.Columns.Add("MachineName").Caption = "Machine";
settings.Columns.Add("UnikeName");
settings.Settings.ShowPreview = true;
settings.PreviewFieldName = "ExceptionString";
return settings;
}
public ActionResult Index()
{
return PartialView("_LogView");
}
public ActionResult Grid()
{
if (DataSource == null)
{
DataSource = GetAllEventsLast24h();
}
return PartialView("_GridPartial");
}
public ActionResult EmptyGrid()
{
DataSource = null;
return PartialView("_GridPartial");
}
public List<LoggingEvent> GetAllEventsLast24h() {
return GetEventsWithCommand("where Ts > '" + DateTime.Now.AddDays(-1).ToString("yyyy-MM-dd HH:mm:ss") + "';");
}
public List<LoggingEvent> GetEventsOnDateTime(DateTime fromDate, DateTime toDate)
{
return GetEventsWithCommand("where Ts > '" + fromDate.ToString("yyyy-MM-dd HH:mm:ss") + "' AND Ts < '" + toDate.ToString("yyyy-MM-dd HH:mm:ss") + "';");
}
public List<LoggingEvent> GetEventsWithCommand(string where)
{
List<LoggingEvent> events = new List<LoggingEvent>();
SqlConnection myConnection = new SqlConnection("Data Source=xxx;user id=xxx;password=xxx;connection timeout=30");
myConnection.Open();
SqlDataReader myReader = null;
SqlCommand command = new SqlCommand("SELECT Id,Ts,LogLevel,LoggerName,Message,ThreadName,UserName,ExceptionString,Domain,ClassName,FileName,MethodName,LineNumber,LocalIP,MachinName,UnikeName from dbo.LoggingEvent " + where);
command.Connection = myConnection;
myReader = command.ExecuteReader();
while (myReader.Read())
{
events.Add(LoggingEvent.ReadEntityFromDbReader(myReader));
}
myConnection.Close();
return events;
}
[HttpPost]
public ActionResult ReloadGrid(string fromDate, string toDate)
{
DateTime fromDateTime;
DateTime toDateTime;
if (!string.IsNullOrEmpty(fromDate) && !string.IsNullOrEmpty(toDate)) // todo
{
fromDateTime = ParseStringToDate(fromDate);
toDateTime = ParseStringToDate(toDate);
}
else// No dates specified = get last 24 hours
{
toDateTime = DateTime.Now;
fromDateTime = toDateTime.AddHours(-24);
}
if (fromDateTime.CompareTo(toDateTime) > 0)
{
// from date grater then todate, change places
DateTime temp = toDateTime;
toDateTime = fromDateTime;
fromDateTime = temp;
}
DataSource = GetEventsOnDateTime(fromDateTime, toDateTime);
return PartialView("_LogView");
}
public DateTime ParseStringToDate(string datetxt)// todo this is copy froim treemenuviewcontroller, create utilsclass
{
const string dateformat = "dd.MM.yyyy HH:mm"; // jquery datepicker
const string dateformat2 = "yyyy-MM-dd HH:mm";// chrome TODO different formats with different location setting?
DateTime dateTime;
try //todo error handling!
{
dateTime = DateTime.ParseExact(datetxt, dateformat, CultureInfo.InvariantCulture);
}
catch
{
dateTime = DateTime.ParseExact(datetxt, dateformat2, CultureInfo.InvariantCulture);
}
return dateTime;
}
public ActionResult ExportToPDF()
{
var printable = GridViewExtension.CreatePrintableObject(GridViewSettings, DataSource);
PrintingSystem ps = new PrintingSystem();
PrintableComponentLink link1 = new PrintableComponentLink(ps);
link1.Component = printable;
link1.PrintingSystem.Document.AutoFitToPagesWidth = 1;
link1.Landscape = true;
CompositeLink compositeLink = new CompositeLink(ps);
compositeLink.Links.Add(link1);
compositeLink.CreateDocument();
using (MemoryStream stream = new MemoryStream())
{
compositeLink.PrintingSystem.ExportToPdf(stream);
WriteToResponse("filename", true, "pdf", stream);
}
ps.Dispose();
return Index();
}
void WriteToResponse(string fileName, bool saveAsFile, string fileFormat, MemoryStream stream)
{
string disposition = saveAsFile ? "attachment" : "inline";
Response.Clear();
Response.Buffer = false;
Response.AppendHeader("Content-Type", string.Format("application/{0}", fileFormat));
Response.AppendHeader("Content-Transfer-Encoding", "binary");
Response.AppendHeader("Content-Disposition",
string.Format("{0}; filename={1}.{2}", disposition, fileName, fileFormat));
Response.BinaryWrite(stream.GetBuffer());
Response.End();
}
}
}
任何线索？
聚苯乙烯。问我为什么不写DevExpress支持没有帮助，所以请不要发表评论。
答案 0 :(得分：1)
检查How to export GridView rows and keep end-user modifications (such as sorting, grouping, filtering, selection)知识库文章并确保是否已实施所有步骤。
答案 1 :(得分：0)
在@Mikhail的帮助之后我通过将@ Html.Action（＆＃34; Grid＆＃34;，＃34; LogView＆＃34;）放在_Log.View.cshtml中的Html.BeginForm中解决了这个问题：
<div id="buttonReset" class ="gridBtn">
<input type="button" id ="ResetBtn" value="Reset Grid" onclick="javascript: ResetGrid()"/>
</div>
@using (Html.BeginForm("ExportToPDF", "LogView", FormMethod.Post))
{
<div id="buttonExport" class ="gridBtn">
<input type="submit" id ="ExportBtn" value="Export to pdf" />
</div>
@Html.Action("Grid","LogView")}