解决水晶报表出现登陆框的问题

你最好还是用sql连接,因为oledb和sql的连接信息不是一样的.
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"]);
http://dev.csdn.net/develop/article/76/76324.shtm