水晶报表：单击表头排序C#2.0版

开发环境：VS2005，及该版本自带的水晶报表
本文的前提是，报表都能完全显示数据
1.单击表头的第一个字段：右键→设置对象格式，如下图

2.然后在“格式编辑器”中，超级链接→Internet上的网站(A)，然后在“网站地址(I)”下面输入：“Flydragon0815.aspx?FieldName=Location”，本页面的名字：“Flydragon0815.aspx”，“FieldName”为参数的名字，也就是该字段的名称，“Flydragon0815.aspx”为要加载该报表的页面。
“Flydragon0815.aspx?FieldName=Location”这样写的目的是把“Location”这个名字传到的后台代码中，以便控制排序
.

3.这一步比较重要，在报表的空白处右键：报表→记录排序专家

4 把该字添加到“排序字段”中，提示：这一步较重要，其它字段排序时不用选了，选择这一个就可以了，如果多选的话，可能就不能排序了。


这些基本的操作完成后，
先看一下预览的界面，按Loaction排序前

按“Location”排序后：

以下是源代码：
C# code
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using CrystalDecisions.CrystalReports.Engine;
public partial class _Default : System.Web.UI.Page
{
public string g_MyConnection = System.Configuration.ConfigurationManager.ConnectionStrings["MyconnectionStrings"].ToString();
private static ReportDocument m_ReportDoc =new ReportDocument();
private static string m_strGetFldName = null;
private static bool m_FlagOrder = false;//用来判断排序的方式：AscendingOrder，DescendingOrder
private static bool m_FlagOverPage = false;//控制是否是“IsPostBack”的翻页标志
protected void Page_Load(object sender, EventArgs e)
{
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (IsPostBack)
{
//获取缓存的报表
m_ReportDoc = (ReportDocument)Session["Report"];
if (m_ReportDoc == null)
{
ReportDoc_Bind();
}
m_strGetFldName = null;
this.crystalReportViewer.ReportSource = m_ReportDoc;
m_FlagOverPage = true;
}
if (m_FlagOverPage)
{
m_FlagOverPage = false;
}
else
{
if (m_ReportDoc != null)
{
m_strGetFldName = Request.QueryString["FieldName"];
if (m_strGetFldName != null)
{
GetFieldName(m_strGetFldName);
}
}
}
}
/// <summary>
/// 获得要排序的字段
/// </summary>
/// <param name="strFieldName"></param>
private void GetFieldName(string strFieldName)
{
try
{
FieldDefinition FieldDef = null;
FieldDef = m_ReportDoc.Database.Tables[0].Fields[strFieldName];//把从“数据库”中取的该字段赋给 FieldDef
m_ReportDoc.DataDefinition.SortFields[0].Field = FieldDef;//然后再赋给要排序的字段名称
if (m_FlagOrder == false)
{
m_ReportDoc.DataDefinition.SortFields[0].SortDirection = CrystalDecisions.Shared.SortDirection.AscendingOrder;
m_FlagOrder = true;
}
else
{
m_ReportDoc.DataDefinition.SortFields[0].SortDirection = CrystalDecisions.Shared.SortDirection.DescendingOrder;
m_FlagOrder = false;
}
crystalReportViewer.ReportSource = m_ReportDoc;
crystalReportViewer.ShowLastPage(); //获取页数
crystalReportViewer.ShowFirstPage();
}
catch (Exception ee)
{
Response.Write("<b><font color='#FF0000'>Operate Error！</font></b>");
}
}
/// <summary>
/// 绑定报表
/// </summary>
private void ReportDoc_Bind()
{
string sql = "select ct.XK_TEXT as Location, pt.XK_RECEIPT_DATE_TIME as DateStart, " +
" pt.XK_RECEIPT_DATE_TIME as DateEnd, pt.XK_PLU as Dept, pt.XK_RECEIPT_NUM as Receipt#, " +
" p.XK_TEXT as Item#, pt.XK_QUANTITY as Quantity, pt.XK_AMOUNT as Amount " +
" from XK_CASH_TERMINAL ct left outer join XK_POS_TRANSACTION pt on ct.XK_ID = pt.XK_CASH_TERMINAL_ID " +
" left outer join XK_PRODUCT p on pt.XK_PROD_CODE = p.XK_CODE where 1=1 and pt.XK_STATUS IS NULL ";
SqlConnection conn = new SqlConnection(g_MyConnection);
System.Data.SqlClient.SqlDataAdapter MyCommand = new SqlDataAdapter(sql, conn);
DataSet ds = new DataSet();
MyCommand.Fill(ds);
ReportDocument m_ReportDoc = new ReportDocument();
m_ReportDoc.Load(Server.MapPath("Crystalrpt.rpt"));
m_ReportDoc.SetDataSource(ds.Tables[0]);
Session["Report"] = m_ReportDoc;
conn.Close();
}
protected void btnOk_Click(object sender, EventArgs e)
{
ReportDoc_Bind();
this.crystalReportViewer.ReportSource = m_ReportDoc;//显示报表
}
}