如何使用Devexpress报告在asp.net页面中显示报告？

大家好，

asp.net中的DevExpress报告向导中的新内容c＃

我正在尝试使用xtrareports在我的网页上显示报告。

i已在xtrareports中完成报告设计。

但我无法在我的网页上显示设计。



i尝试下面代码在我的网页上显示报告，但我收到以下错误，

请看下面的代码，



please请给我一个解决方案。



我的错误是：

对象引用没有设置为对象的实例。



我的代码是：

Hi all,
Am new in DevExpress Report wizard in asp.net c#
am trying to show the report on my web page using xtrareports.
i have done the report design within the xtrareports.
but i cannot show the design on my web page.

i tried below code to show the report on my web page but am getting the below error,
please have a look at the code below,

please drop me a solution for this.

my error is :
Object reference not set to an instance of an object.

my code is :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DevExpress.XtraReports.UI;
using DevExpress.XtraReports.Web;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        // Create a report. 
        XtraReport1 report = new XtraReport1();
        // Show the report's preview. 
        ReportPrintTool tool = new ReportPrintTool(report);
        tool.ShowPreview();
   
        
    }
}

提前感谢...

thanks in advance...