1。第一步是添加新项CrystalReport1 2。在CrystalReport1.rpt面页右键选择:”数据库”à”添加/删除数据库”出现下面对话框: 然后点开OLE DB(ADO)的加号,将弹出选择数据库的对话框 其中”项目数据”里面的”当前连接”显示的就是OLE DB(ADO)的连接,这样就可以将表添加到右边的”选定的表”中了(切记:不要既从”OLE DB” 中选表或命令又从”当前连接”中选,如果你用了数据集,也是一样的道理,否则全提示出”登陆失败”的错误!) 3。字段资料管理器里面”数据库字段”里把字段直接拖到CrystalReport.rpt里面了.布置好布局. 4。回到WebForm1.aspx页面,选择控件CrystalReportViewer将其放到页面上。 5。代码 using CrystalDecisions.Shared; using CrystalDecisions.CrystalReports.Engine; 在WebForm1.aspx.cs的Form_Load里面添加代码: TableLogOnInfo logOnInfo = new TableLogOnInfo(); ReportDocument rpdMy0= new ReportDocument(); logOnInfo.ConnectionInfo.ServerName = "NNN"; logOnInfo.ConnectionInfo.Password="dong"; logOnInfo.ConnectionInfo.DatabaseName="Lab"; logOnInfo.ConnectionInfo.UserID = "sa"; String path = Server.MapPath("CrystalReport2.rpt"); rpdMy0.Load(path); rpdMy0.Database.Tables[0].ApplyLogOnInfo(logOnInfo); CrystalReportViewer1.ReportSource = rpdMy0; 其中: TableLogOnInfo类是: 提供属性，以便检索和设置表连接选项.它有一个连接的属性ConnectionInfo,用来设置与数据库的连接.如上面的ServerName等.生成一个报表文档对象将前面我们做好的那个CrystalReport1.rpt赋给它.在这里要注意的是Database属性!然后把报表对象做为CrystalReportViewer1的数据源. 或者，获得数据库的方法改为直接从数据库获得DataSet using System.Data.SqlClient; using System.Collections.Specialized; string strConn=System.Configuration.ConfigurationSettings.AppSettings["DB"].ToString(); using (SqlConnection conn = new SqlConnection(strConn)) { SqlDataAdapter da = new SqlDataAdapter(strSQL,conn);//strSQL是SQL语言"select * from dbo.table1" DataSet ds=new DataSet(); da.Fill( ds); CrystalReport1 cr1 = new CrystalReport1(); cr1.SetDataSource( ds); CrystalReportViewer1.ReportSource = cr1; } using CrystalDecisions.Shared; using CrystalDecisions.CrystalReports.Engine; 在WebForm1.aspx.cs的Form_Load里面添加代码: TableLogOnInfo logOnInfo = new TableLogOnInfo(); ReportDocument rpdMy0= new ReportDocument(); logOnInfo.ConnectionInfo.ServerName = "NNN"; logOnInfo.ConnectionInfo.Password="dong"; logOnInfo.ConnectionInfo.DatabaseName="Lab"; logOnInfo.ConnectionInfo.UserID = "sa"; String path = Server.MapPath("CrystalReport2.rpt"); rpdMy0.Load(path); rpdMy0.Database.Tables[0].ApplyLogOnInfo(logOnInfo); CrystalReportViewer1.ReportSource = rpdMy0; 其中: TableLogOnInfo类是: 提供属性，以便检索和设置表连接选项.它有一个连接的属性ConnectionInfo,用来设置与数据库的连接.如上面的ServerName等.生成一个报表文档对象将前面我们做好的那个CrystalReport1.rpt赋给它.在这里要注意的是Database属性!然后把报表对象做为CrystalReportViewer1的数据源. 或者，获得数据库的方法改为直接从数据库获得DataSet using System.Data.SqlClient; using System.Collections.Specialized; string strConn=System.Configuration.ConfigurationSettings.AppSettings["DB"].ToString(); using (SqlConnection conn = new SqlConnection(strConn)) { SqlDataAdapter da = new SqlDataAdapter(strSQL,conn);//strSQL是SQL语言"select * from dbo.table1" DataSet ds=new DataSet(); da.Fill( ds); CrystalReport1 cr1 = new CrystalReport1(); cr1.SetDataSource( ds); CrystalReportViewer1.ReportSource = cr1; } using CrystalDecisions.Shared; using CrystalDecisions.CrystalReports.Engine; 在WebForm1.aspx.cs的Form_Load里面添加代码: TableLogOnInfo logOnInfo = new TableLogOnInfo(); ReportDocument rpdMy0= new ReportDocument(); logOnInfo.ConnectionInfo.ServerName = "NNN"; logOnInfo.ConnectionInfo.Password="dong"; logOnInfo.ConnectionInfo.DatabaseName="Lab"; logOnInfo.ConnectionInfo.UserID = "sa"; String path = Server.MapPath("CrystalReport2.rpt"); rpdMy0.Load(path); rpdMy0.Database.Tables[0].ApplyLogOnInfo(logOnInfo); CrystalReportViewer1.ReportSource = rpdMy0; 其中: TableLogOnInfo类是: 提供属性，以便检索和设置表连接选项.它有一个连接的属性ConnectionInfo,用来设置与数据库的连接.如上面的ServerName等.生成一个报表文档对象将前面我们做好的那个CrystalReport1.rpt赋给它.在这里要注意的是Database属性!然后把报表对象做为CrystalReportViewer1的数据源. 或者，获得数据库的方法改为直接从数据库获得DataSet using System.Data.SqlClient; using System.Collections.Specialized; string strConn=System.Configuration.ConfigurationSettings.AppSettings["DB"].ToString(); using (SqlConnection conn = new SqlConnection(strConn)) { SqlDataAdapter da = new SqlDataAdapter(strSQL,conn);//strSQL是SQL语言"select * from dbo.table1" DataSet ds=new DataSet(); da.Fill( ds); CrystalReport1 cr1 = new CrystalReport1(); cr1.SetDataSource( ds); CrystalReportViewer1.ReportSource = cr1; }

如果你用的是水晶报表的推模式，一般不用设置登陆信息，但是要这样写：obj.SetDataSource(this.ds.Tables["tablename"]);如果你写成了obj.SetDataSource(this.ds)就会有登陆框的。

如果你用的是水晶报表的拉模式，你就一定要写上登陆信息：

crReportDocument = new OracleReport();

//Set the crConnectionInfo with the current values stored in the report crConnectionInfo = crReportDocument.Database.Tables[0].LogOnInfo.ConnectionInfo;

/* Populate the ConnectionInfo Objects Properties with the appropriate values for the ServerName, User ID, Password and DatabaseName. However, since Oracle works on Schemas, Crystal Reports does not recognize or store a DatabaseName. Therefore, the DatabaseName property must be set to a BLANK string. */ crConnectionInfo.DatabaseName = ""; crConnectionInfo.ServerName = "Your Server Name"; crConnectionInfo.UserID = "Your User ID"; crConnectionInfo.Password = "Your Password";

//Set the CrDatabase Object to the Report's Database crDatabase = crReportDocument.Database;

//Set the CrTables object to the Tables collection of the Report's dDtabase crTables = crDatabase.Tables;

//Loop through each Table object in the Tables collection and apply the logon info //specified ealier. Note this sample only has one table so the loop will only execute once foreach (Table crTable in crTables) { crTableLogOnInfo = crTable.LogOnInfo; crTableLogOnInfo.ConnectionInfo = crConnectionInfo; crTable.ApplyLogOnInfo (crTableLogOnInfo);

// if you wish to change the schema name as well, you will need to set Location property as follows: // crTable.Location = "<new schema name>." + crTable.Name; }

//Set the ReportSource of the CrystalReportViewer to the strongly typed Report included in the project crystalReportViewer1.ReportSource = crReportDocument;

还有一点要注意： 如果你用到了子报表，一定要处理：

//Go through each sections in the main report and identify the subreport by name crSections = crReportDocument.ReportDefinition.Sections;

foreach(Section crSection in crSections) { crReportObjects = crSection.ReportObjects; //loop through all the report objects to find all the subreports foreach(ReportObject crReportObject in crReportObjects) { if (crReportObject.Kind == ReportObjectKind.SubreportObject) { //you will need to typecast the reportobject to a subreport //object once you find it crSubreportObject = (SubreportObject)crReportObject;

//open the subreport object crSubReportDoc = crSubreportObject.OpenSubreport(crSubreportObject.SubreportName); //Once the correct subreport has been located pass it the //appropriate dataset if(crSubReportDoc.Name == "FirstSub") { //crSubReportDoc.Database.Tables[0].SetDataSource(ds); crSubReportDoc.SetDataSource(ds); } } } } crystalReportViewer1.ReportSource = crReportDocument;

同样crSubReportDoc.SetDataSource(ds);改为：crSubReportDoc.SetDataSource(ds.Tables["tablename"]);

本文转自钢钢博客园博客，原文链接：http://www.cnblogs.com/xugang/archive/2007/09/13/892037.html，如需转载请自行联系原作者