我有一个应用程序（不我的编码），它有很多的水晶报表。 我面临的问题是，每次我打开它要求登录用户名和密码的Crystal报表。
一点点搜索后我发现我必须设置在运行时的报告connectioninfo，我发现了一些解决方案，但是当我看着应用程序的代码，我没有发现它，因为我期待。
该frmviewrpt（具有水晶报表浏览器的形式）有一些像这样的事情：
RptProBalance rptProductBalance = new RptProBalance();
rptProductBalance.RecordSelectionFormula = getBalanceRptSelection();
rptProductBalance.Refresh();
allReportViewer.ReportSource = rptProductBalance;
所述RptProBalance（）（在CS对从RptProBalance.rpt文件扩展文件）：
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated by a tool.
// Runtime Version:2.0.50727.42
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace minfatora {
using System;
using System.ComponentModel;
using CrystalDecisions.Shared;
using CrystalDecisions.ReportSource;
using CrystalDecisions.CrystalReports.Engine;
public class RptProBalance : ReportClass {
public RptProBalance() {
}
public override string ResourceName {
get {
return "RptProBalance.rpt";
}
set {
// Do nothing
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section ReportHeaderSection1 {
get {
return this.ReportDefinition.Sections[0];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section PageHeaderSection1 {
get {
return this.ReportDefinition.Sections[1];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section GroupHeaderSection1 {
get {
return this.ReportDefinition.Sections[2];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section DetailSection1 {
get {
return this.ReportDefinition.Sections[3];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section GroupFooterSection1 {
get {
return this.ReportDefinition.Sections[4];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section ReportFooterSection1 {
get {
return this.ReportDefinition.Sections[5];
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public CrystalDecisions.CrystalReports.Engine.Section PageFooterSection1 {
get {
return this.ReportDefinition.Sections[6];
}
}
}
[System.Drawing.ToolboxBitmapAttribute(typeof(CrystalDecisions.Shared.ExportOptions), "report.bmp")]
public class CachedRptProBalance : Component, ICachedReport {
public CachedRptProBalance() {
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public virtual bool IsCacheable {
get {
return true;
}
set {
//
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public virtual bool ShareDBLogonInfo {
get {
return false;
}
set {
//
}
}
[Browsable(false)]
[DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
public virtual System.TimeSpan CacheTimeOut {
get {
return CachedReportConstants.DEFAULT_TIMEOUT;
}
set {
//
}
}
public virtual CrystalDecisions.CrystalReports.Engine.ReportDocument CreateReport() {
RptProBalance rpt = new RptProBalance();
rpt.Site = this.Site;
return rpt;
}
public virtual string GetCustomizedCacheKey(RequestContext request) {
String key = null;
// // The following is the code used to generate the default
// // cache key for caching report jobs in the ASP.NET Cache.
// // Feel free to modify this code to suit your needs.
// // Returning key == null causes the default cache key to
// // be generated.
//
// key = RequestContext.BuildCompleteCacheKey(
// request,
// null, // sReportFilename
// this.GetType(),
// this.ShareDBLogonInfo );
return key;
}
}
}
我不知道究竟在何处我应该做的连接信息，并把它传递给报告。
ConnectionInfo crconnectioninfo = new ConnectionInfo();
ReportDocument cryrpt = new ReportDocument();
TableLogOnInfos crtablelogoninfos = new TableLogOnInfos();
TableLogOnInfo crtablelogoninfo = new TableLogOnInfo();
Tables CrTables;
crconnectioninfo.ServerName = "localhost";
crconnectioninfo.DatabaseName = "dbclients";
crconnectioninfo.UserID = "ssssssss";
crconnectioninfo.Password = "xxxxxxx";
cryrpt.Load(Application.StartupPath + "\\rpts\\" + dealerInfo.ResourceName);
CrTables = cryrpt.Database.Tables;
foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)
{
crtablelogoninfo = CrTable.LogOnInfo;
crtablelogoninfo.ConnectionInfo = crconnectioninfo;
CrTable.ApplyLogOnInfo(crtablelogoninfo);
}
cryrpt.RecordSelectionFormula = getCustInfoRptSelection();
cryrpt.Refresh();
allReportViewer.ReportSource = cryrpt;
如果你想通过代码来提供，然后在你的情况下，它看起来像你想进入该数据源正在调用您的.rpt文件，并设置它。 这是从我在VB.Net博客的例子。 此代码将通过所有的子报告，主要报告和更新连接字符串（这个假设，所有报告/子报表连接到同一个数据库中，如果没有，你可以使用此代码片段更新单独的子报告）。
它将被用来这样的事（虽然，你绑定到观众可能，而不是出口，所以你可以忽略，这只是举例）。
Using rd As New ReportDocument
rd.Load("C:\Temp\CrystalReports\InternalAccountReport.rpt")
rd.ApplyNewServer("serverName or DSN", "databaseUsername", "databasePassword")
rd.ApplyParameters("AccountNumber=038PQRX922;", True)
rd.ExportToDisk(ExportFormatType.PortableDocFormat, "c:\temp\test.pdf")
rd.Close()
End Using
System.Diagnostics.Process.Start("c:\temp\test.pdf")
下面是扩展方法模块：
Imports System.Runtime.CompilerServices
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports CrystalDecisions.CrystalReports
Namespace Extensions
''' <summary>
''' A set of extension methods to make manually working with Crystal Reports easier.
''' </summary>
''' <remarks>
''' Pieces of this code started in March of 2004 and have evolved over the last 8 years.
''' </remarks>
Public Module CrystalReportExtensions
'*********************************************************************************************************************
'
' Module: CrystalReportExtensions
' Initial Date: 03/26/2004
' Last Updated: 05/22/2012
' Programmer(s): Blake Pell
'
'*********************************************************************************************************************
''' <summary>
''' Applies a new server name, SQL username and password to a ReportDocument. This method can be used with any number
''' of database providers.
''' </summary>
''' <remarks></remarks>
<Extension()> _
Public Sub ApplyNewServer(ByVal report As ReportDocument, serverName As String, username As String, password As String)
For Each subReport As ReportDocument In report.Subreports
For Each crTable As Table In subReport.Database.Tables
Dim loi As TableLogOnInfo = crTable.LogOnInfo
loi.ConnectionInfo.ServerName = serverName
loi.ConnectionInfo.UserID = username
loi.ConnectionInfo.Password = password
crTable.ApplyLogOnInfo(loi)
Next
Next
'Loop through each table in the report and apply the new login information (in our case, a DSN)
For Each crTable As Table In report.Database.Tables
Dim loi As TableLogOnInfo = crTable.LogOnInfo
loi.ConnectionInfo.ServerName = serverName
loi.ConnectionInfo.UserID = username
loi.ConnectionInfo.Password = password
crTable.ApplyLogOnInfo(loi)
'If your DatabaseName is changing at runtime, specify the table location.
'crTable.Location = ci.DatabaseName & ".dbo." & crTable.Location.Substring(crTable.Location.LastIndexOf(".") + 1)
Next
End Sub
''' <summary>
''' Applies a new server name to the ReportDocument. This method is SQL Server specific if integratedSecurity is True.
''' </summary>
''' <param name="report"></param>
''' <param name="serverName">The name of the new server.</param>
''' <param name="integratedSecurity">Whether or not to apply integrated security to the ReportDocument.</param>
''' <remarks></remarks>
<Extension()> _
Public Sub ApplyNewServer(report As ReportDocument, serverName As String, integratedSecurity As Boolean)
For Each subReport As ReportDocument In report.Subreports
For Each crTable As Table In subReport.Database.Tables
Dim loi As TableLogOnInfo = crTable.LogOnInfo
loi.ConnectionInfo.ServerName = serverName
If integratedSecurity = True Then
loi.ConnectionInfo.IntegratedSecurity = True
End If
crTable.ApplyLogOnInfo(loi)
Next
Next
'Loop through each table in the report and apply the new login information (in our case, a DSN)
For Each crTable As Table In report.Database.Tables
Dim loi As TableLogOnInfo = crTable.LogOnInfo
loi.ConnectionInfo.ServerName = serverName
If integratedSecurity = True Then
loi.ConnectionInfo.IntegratedSecurity = True
End If
crTable.ApplyLogOnInfo(loi)
'If your DatabaseName is changing at runtime, specify the table location.
'crTable.Location = ci.DatabaseName & ".dbo." & crTable.Location.Substring(crTable.Location.LastIndexOf(".") + 1)
Next
End Sub
''' <summary>
''' Applies a new database name to all of the tables in the Crystal Report. If you do not wish to use a schemaName, pass
''' a blank string in for it.
''' </summary>
''' <param name="report">The Crystal Report document.</param>
''' <param name="databaseName">The name of the database.</param>
''' <param name="schemaName">The schema name if necessary. If this is not needed, pass a blank in.</param>
''' <remarks>Depending on your database server, this may require a schema also. For instance, in SQL Server
''' you may need NorthWind.dbo. </remarks>
<Extension()> _
Public Sub ApplyNewDatabaseName(ByVal report As ReportDocument, databaseName As String, schemaName As String)
Dim prefix As String = ""
If schemaName <> "" Then
prefix = String.Format("{0}.{1}.", databaseName, schemaName)
Else
prefix = String.Format("{0}.", databaseName)
End If
'Loop through each table in the report and apply the new database name
For Each crTable As Table In report.Database.Tables
'If your DatabaseName is changing at runtime, specify the table location.
crTable.Location = String.Format("{0}{1}", prefix, crTable.Location.Substring(crTable.Location.LastIndexOf(".") + 1))
Next
End Sub
''' <summary>
''' Sets the Username, Password and ServerName property and/or the UseTrustedConnection property with the values listed in the
''' provided connection string. Currently, only Sql Server is supported for automatically loading values from a connection
''' string.
''' </summary>
''' <param name="sqlConnectionString"></param>
''' <remarks></remarks>
<Extension()> _
Public Sub ApplyCredentialsFromConnectionString(report As ReportDocument, ByVal sqlConnectionString As String)
' Apply the connection information from the web.config file.
Dim cb As New System.Data.SqlClient.SqlConnectionStringBuilder(sqlConnectionString)
If cb.IntegratedSecurity = False Then
ApplyNewServer(report, cb.DataSource, cb.UserID, cb.Password)
Else
ApplyNewServer(report, cb.DataSource, True)
End If
End Sub
''' <summary>
''' Checks to see if a parameter name exists in the reports parameter fields. This only checks the top level of
''' the report. The top level should propagate down any parameters that need to be passed down.
''' </summary>
''' <param name="paramName"></param>
''' <param name="report"></param>
''' <returns></returns>
''' <remarks></remarks>
<Extension()> _
Public Function DoesParameterExist(ByVal report As ReportDocument, ByVal paramName As String) As Boolean
If report Is Nothing Or report.ParameterFields Is Nothing Then
Return False
End If
For Each param As ParameterField In report.ParameterFields
If paramName = param.Name Then
Return True
End If
Next
Return False
End Function
''' <summary>
''' Takes a parameter string and places them in the corresponding parameters for the report. The parameter string must
''' be semi-colon delimited with the parameter inside of that delimited with an equal sign. E.g.<br /><br />
'''
''' <code>
''' lastName=Pell;startDate=1/1/2012;endDate=1/7/2012
''' </code>
'''
''' </summary>
''' <param name="report">The Crystal Reports ReportDocument object.</param>
''' <param name="parameters">A parameter string representing name/values. See the summary for usage.</param>
''' <remarks></remarks>
<Extension()> _
Public Sub ApplyParameters(report As ReportDocument, parameters As String)
ApplyParameters(report, parameters, False)
End Sub
''' <summary>
''' Takes a parameter string and places them in the corresponding parameters for the report. The parameter string must
''' be semi-colon delimited with the parameter inside of that delimited with an equal sign. E.g.<br /><br />
'''
''' <code>
''' lastName=Pell;startDate=1/1/2012;endDate=1/7/2012
''' </code>
'''
''' </summary>
''' <param name="report">The Crystal Reports ReportDocument object.</param>
''' <param name="parameters">A parameter string representing name/values. See the summary for usage.</param>
''' <param name="removeInvalidParameters">If True, parameters that don't exist in the Crystal Report will
''' be removed. If False, these parameters will be left in and an exception will be thrown listing
''' the offending parameter name.</param>
''' <remarks></remarks>
<Extension()> _
Public Sub ApplyParameters(report As ReportDocument, parameters As String, removeInvalidParameters As Boolean)
' No parameters (or valid parameters) were provided.
If String.IsNullOrEmpty(parameters) = True Or parameters.Contains("=") = False Then
Exit Sub
End If
' Get rid of any trailing or leading semi-colons that would mess up the splitting.
parameters = parameters.Trim(";")
' The list of parameters split out by the semi-colon delimiter
Dim parameterList As String() = parameters.Split(Chr(Asc(";")))
For Each parameter As String In parameterList
' nameValue(0) = Parameter Name, nameValue(0) = Value
Dim nameValue As String() = parameter.Split(Chr(Asc("=")))
' Validate that the parameter exists and throw a legit exception that describes it as opposed to the
' Crystal Report COM Exception that gives you little detail.
If report.DoesParameterExist(nameValue(0)) = False And removeInvalidParameters = False Then
Throw New Exception(String.Format("The parameter '{0}' does not exist in the Crystal Report.", nameValue(0)))
ElseIf report.DoesParameterExist(nameValue(0)) = False And removeInvalidParameters = True Then
Continue For
End If
' The ParameterFieldDefinition MUST be disposed of otherwise memory issues will occur, that's why
' we're going the "using" route. Using should Dispose of it even if an Exception occurs.
Using pfd As ParameterFieldDefinition = report.DataDefinition.ParameterFields.Item(nameValue(0))
Dim pValues As ParameterValues
Dim parm As ParameterDiscreteValue
pValues = New ParameterValues
parm = New ParameterDiscreteValue
parm.Value = nameValue(1)
pValues.Add(parm)
pfd.ApplyCurrentValues(pValues)
End Using
Next
End Sub
End Module
End Namespace
这听起来像数据源被设置在.rpt文件。 打开在Crystal Reports设计的.rpt文件（或VS如果您对添加），然后选择“验证数据库”。 一旦你提供这个信息并保存，它不应该这样做了。 密码，因为原来的设置可能已被更改。
