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标题: 版本:v3.1.2中HttpContext.Current.Request.Form["X_STATE"]为空时报错 [打印本页]

作者: redleaf 时间: 2012-4-5 17:09
标题: 版本:v3.1.2中HttpContext.Current.Request.Form["X_STATE"]为空时报错
//ExtAspNet\ExtAspNet\Business\ResourceManager\ResourceManager.cs
public JObject PostBackStates
      {
         get
         {
            if (_requestState == null && Page.IsPostBack)
            {
                  //string state = HttpUtility.UrlDecode(HttpContext.Current.Request.Form["X_STATE"]);
                  string state = HttpContext.Current.Request.Form["X_STATE"];
                  string xstateURI = HttpContext.Current.Request.Form["X_STATE_URI"];
                  if (String.IsNullOrEmpty(xstateURI))
                  {
                     state = DecodeFrom64(state);
                  }
                  else
                  {
                     state = HttpUtility.UrlDecode(state);
                  }
                  if (String.IsNullOrEmpty(state))
                  {
                     state = "{}";
                  }
                  _requestState = JObject.Parse(state);
            }
            return _requestState;
         }
      }

作者: sanshi 时间: 2012-4-5 17:24
这个正常情况下不会为空，你怎么测的，官网示例能重现么

作者: redleaf 时间: 2012-4-6 11:02
本帖最后由 redleaf 于 2012-4-6 11:10 编辑

官网示例没有这样的问题。
问题是这样的：在页面上加入Fastreport.net报表后,如用报表中的保存功能时，会出现这样的问题。（可能保存按钮是客户端控件）。
在很早前的版本中是不报错的，但是如第一次在没有查询数据时，点保存后ext

ropDownList中的值会被清空。

[attach]211[/attach]

//.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="

artUsedChartReport.aspx.cs" Inherits="WebTeam.Reports.PartUsedChartReport" %>

<%@ Register Assembly="FastReport.Web" Namespace="FastReport.Web" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>子报表</title>

<script src="../../res/js/Report.js" type="text/javascript"></script>

</head>
<body>
<form id="form1" runat="server">
<ext

ageManager ID="

ageManager1" AutoSizePanelID="RegionPanel1" runat="server"
      EnableAjax="false" />
<ext:HiddenField runat="server" ID="hidPreValue">
</ext:HiddenField>
<ext:RegionPanel ID="RegionPanel1" runat="server">
      <Toolbars>
         <ext:Toolbar ID="Toolbar2" Position="Top" runat="server">
            <Items>
                  <ext:ToolbarFill ID="ToolbarFill2" runat="server">
                  </ext:ToolbarFill>
            </Items>
         </ext:Toolbar>
      </Toolbars>
      <Regions>
         <ext:Region Position="Top" Height="60px" ShowHeader="false" ShowBorder="false">
            <Items>
                  <ext:Form ID="Form2" runat="server" LabelWidth="40px" ShowHeader="false" ShowBorder="false">
                     <Rows>
                        <ext:FormRow>
                              <Items>
                                 <ext

abel runat="server" ID="lblExplain" CssStyle="font-size:16;font-weight:bold;">
</ext

abel>
                              </Items>
                        </ext:FormRow>
                        <ext:FormRow>
                              <Items>
                                 <ext

ropDownList ID="ddlYear" Label="年份" Width="160px" runat="server" AutoPostBack="false">
</ext

ropDownList>
<ext

ropDownList ID="ddlPartType" Label="分类" Width="160px" runat="server" AutoPostBack="false">
</ext

ropDownList>
                                 <ext:Button runat="server" Text="查询" ID="btnReport1">
                                 </ext:Button>
                              </Items>
                        </ext:FormRow>
                     </Rows>
                  </ext:Form>
            </Items>
         </ext:Region>
         <ext:Region Position="Center" ShowHeader="false" ShowBorder="false" Layout="Fit">
            <Items>
                  <ext:ContentPanel runat="server" ShowHeader="false" ShowBorder="false">
                     <cc1:WebReport ID="WebReport1" runat="server" PrintInPdf ="true"
                     ShowToolbar="true" Zoom="1" Height="481px" Padding="5, 5, 5, 5" Width="810px" />
                  </ext:ContentPanel>
            </Items>
         </ext:Region>
      </Regions>
</ext:RegionPanel>
</form>
</body>
</html>
//.cs

using System;
using System.Web;
using System.Xml;
using System.ComponentModel;
using System.Web.UI.WebControls;
using System.Collections.Generic;
using FastReport.Data;
using FastReport;
using FastReport.Web;
using System.Windows.Forms;

namespace WebTeam.Reports
{
public partial class PartUsedChartReport : PageBase
{
      protected void Page_Load(object sender, EventArgs e)
      {
         if (!IsPostBack)
         {
            WebReport1.Prepare();
            BindDDL();
         }

      }
      protected void btnReport1_Click(object sender, EventArgs e)
      {
         hidPreValue.Text = "query";
         WebReport1.Prepare();
      }
      protected void WebReport1_StartReport(object sender, EventArgs e)
      {
         if (hidPreValue.Text == "")
         {
            return;
         }
         hidPreValue.Text = "";
         Report FReport = WebReport1.Report;
         RegisterData(FReport);
      }
      private void RegisterData(Report fReport)
      {
         this.Title = base.GetQueryValue("ReportTitle");
         FastReport.EnvironmentSettings fsetting = new FastReport.EnvironmentSettings();
         fsetting.PreviewSettings.Buttons = FastReport.PreviewButtons.All | FastReport.PreviewButtons.Close;
         fsetting.UIStyle = FastReport.Utils.UIStyle.Office2007Blue;
         //选择模板
         string sPath = CAXA.WEB.Utility.SysConfig.GetWebAppRootDir();
         string sFileName = sPath + "\\Reports\\PartUsedChart.frx";
         XmlDocument xmlDoc = new XmlDocument();
         xmlDoc.Load(sFileName);
         fReport.Report.LoadFromString(xmlDoc.InnerXml);
         //设置报表中的参数值
         string sTitle1 = ddlPartType.SelectedText.ToString();
         fReport.Report.SetParameterValue("

_type", sTitle1);
string sTitle2 = ddlYear.SelectedValue.ToString();
fReport.Report.SetParameterValue("

_year", sTitle2);
         System.Data.DataSet ds = new System.Data.DataSet();
         //注册数据
         fReport.Report.RegisterData(ds);
         fReport.Report.FileName = this.Title;
      }
      private void BindDDL()
      {
         base.BindDDLPartTypes(ddlPartType);
         base.BindDDLYear(ddlYear, false);
      }
}
}

作者: redleaf 时间: 2012-4-9 17:22
PageManager中EnableAjax ="false" 时客户端submit报错。IE8，版本3.1.3
http://bbs.extasp.net/forum.php? ... 407&fromuid=598

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