在Web窗体中Crystal Report Viewer显示空白 [英] In Web form Crystal Report Viewer displaying blank
问题描述
Hi
I'm new in Webform with Crystal Report in visual studio 2012 and framework 4.5. I able to build a Crystal report in web form. But it not displaying any thing. Here I will describe what I did.
1.下载CRforVS_13_0_5.exe 并安装。
2.创建数据集（dbDemo.xsd）
3.创建一个。我的ASP.NET项目中的rpt文件（CRReport.rpt）。并设置数据库字段
4.以下是我显示报告的代码
C＃CODE
1. Download "CRforVS_13_0_5.exe" and installed.
2. create dataset (dbDemo.xsd)
3. Create a .rpt file(CRReport.rpt) in my ASP.NET project. and Set the database field
4. Below is my code to display the report
C#CODE
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
protected void Page_Load（object sender，EventArgs e）
{
ReportDocument rptDoc = new ReportDocument（）;
dbDemo ds = new dbDemo（）; // .xsd文件名
DataTable dt = new DataTable（）;
//只需设置数据表的名称
dt.TableName =DATA;
dt = getorder（）; //这个函数位于这个函数下面
ds.Tables [0] .Merge（dt）;
//你的.rpt文件路径将在下面
rptDoc.Load（Server.MapPath（CRReport.rpt））;
//将数据集设置为报告查看器。
rptDoc.SetDataSource（ds）;
rptDoc.SetDatabaseLogon（tps_ideal，idealpw）;
CrystalReportViewer1。 ReportSource = rptDoc;
CrystalReportViewer1.DisplayToolbar = true;
}
公共DataTable getorder（）
{//连接字符串用数据库替换'databaseservername'服务器名称
SqlConnection MyConn = new SqlConnection（ConfigurationManager.ConnectionStrings [DBConnectionString]。ConnectionString）;
// SqlConnection Con = new SqlConnectio n（MyConn）;
SqlCommand cmd = new SqlCommand（）;
DataSet ds = null;
SqlDataAdapter适配器;
尝试
{
MyConn.Open（）;
//存储过程调用。它已经在示例数据库中了。
cmd.CommandText =BindReportView;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue（@ DOCID，Doc / 001）;
cmd.Parameters.AddWithValue（@ DOCNAME，Test Roshni Doc / 001） ;
cmd.Connection = MyConn;
ds = new DataSet（）;
adapter = new SqlDataAdapter（cmd）;
adapter.Fill（ds，Users）;
}
catch（Exception ex）
{
抛出新的例外（ex.Message）;
}
终于
{
cmd。 Dispose（）;
if（MyConn.State！= ConnectionState.Closed）
MyConn.Close（）;
}
返回ds.Tables [0];
}
< br $>
HTML CODE
protected void Page_Load(object sender, EventArgs e)
{
ReportDocument rptDoc = new ReportDocument();
dbDemo ds = new dbDemo(); // .xsd file name
DataTable dt = new DataTable();
// Just set the name of data table
dt.TableName = "DATA";
dt = getorder(); //This function is located below this function
ds.Tables[0].Merge(dt);
// Your .rpt file path will be below
rptDoc.Load(Server.MapPath("CRReport.rpt"));
//set dataset to the report viewer.
rptDoc.SetDataSource(ds);
rptDoc.SetDatabaseLogon("tps_ideal", "idealpw");
CrystalReportViewer1.ReportSource = rptDoc;
CrystalReportViewer1.DisplayToolbar = true;
}
public DataTable getorder()
{//Connection string replace 'databaseservername' with your db server name
SqlConnection MyConn = new SqlConnection(ConfigurationManager.ConnectionStrings["DBConnectionString"].ConnectionString);
//SqlConnection Con = new SqlConnection(MyConn);
SqlCommand cmd = new SqlCommand();
DataSet ds = null;
SqlDataAdapter adapter;
try
{
MyConn.Open();
//Stored procedure calling. It is already in sample db.
cmd.CommandText = "BindReportView";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@DOCID", "Doc/001");
cmd.Parameters.AddWithValue("@DOCNAME", "Test Roshni Doc/001");
cmd.Connection = MyConn;
ds = new DataSet();
adapter = new SqlDataAdapter(cmd);
adapter.Fill(ds, "Users");
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
cmd.Dispose();
if (MyConn.State != ConnectionState.Closed)
MyConn.Close();
}
return ds.Tables[0];
}
HTML CODE
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Demo.aspx.cs" Inherits="Sample.Demo" %>
<%@ Register Assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<CR:CrystalReportViewer ID="CrystalReportViewer1" runat="server" AutoDataBind="true" />
</div>
</form>
</body>
</html>
我不知道知道观看我们需要添加任何东西itional。当我调试时，我在我的数据集中获取值testds
I don't know for viewing we need anything additional. When I debugging, I'm getting the value in my dataset "testds"
推荐答案
检查此Exapmle我希望这会对你有所帮助......
http://aspsnippets.com/Articles/Crystal-Report-ASPNet-Example-using-DataSet-or-DataTable-in-C-VBNet-and-Visual-Studio-2010.aspx [ ^ ]
Check this Exapmle i hope this will help you...
http://aspsnippets.com/Articles/Crystal-Report-ASPNet-Example-using-DataSet-or-DataTable-in-C-VBNet-and-Visual-Studio-2010.aspx[^]
这篇关于在Web窗体中Crystal Report Viewer显示空白的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
