Question

我有一份使用Crystal Reports 2008的报告，我需要部署一个生产系统，这意味着我需要能够在运行时更改数据库连接。数据库是PostgreSQL 8.3.0，我用来创建初始报告的连接是ODBC连接。

我找到了各种更改数据库连接的方法，包括：

reportDoc.Load(report);
reportDoc.DataSourceConnections[0].SetConnection("server", "database", "user", "pwd");
reportDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, path);

但是，这总是失败，并显示以下错误消息。

无法打开连接。

我已经通过pgAdmin III成功连接到数据库来验证连接参数，因此我知道连接参数是正确的。另外，如果我删除了SetConnection（...）行，那么代码如下所示：

reportDoc.Load(report);
reportDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, path);

然后使用报告中存储的连接参数运行报告。此方法是否可能不适用于ODBC连接？

如何在运行时更改Crystal Report的ODBC数据库连接？

Answer 1

在甚至更多研究之后，我发现有两部分答案。

第1部分

如果您使用数据所有者通过ODBC连接到PostgreSQL（Crystal Reports可以在撰写本文时从PostgreSQL中提取数据的唯一方法），那么您可以使用以下代码：

reportDoc.Load(report);
reportDoc.DataSourceConnections[0].SetConnection("Driver={PostgreSQL ANSI};Server=myServer;Port=5432;", "myDatabase", "myUser", "myPassword");
reportDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, path);
// Depending on your application you may have more than one data source connection that needs to be changed.

此方法仅在您作为拥有您要报告的数据的用户进行连接时才有效，因为不需要提供模式名称。

第2部分

如果您通过ODBC与数据所有者以外的用户连接到PostgreSQL，则需要手动提供架构名称。这可以通过以下代码完成。

reportDoc.Load(report);

ConnectionInfo connInfo = new ConnectionInfo();
connInfo.ServerName = "Driver={PostgreSQL ANSI};Server=myServer;Port=5432;";
connInfo.DatabaseName = "myDatabase";
connInfo.UserID = "myUser";
connInfo.Password = "myPassword";

TableLogOnInfo tableLogOnInfo = new TableLogOnInfo();
tableLogOnInfo.ConnectionInfo = connInfo;

foreach (Table table in reportDoc.Database.Tables)
{
    table.ApplyLogOnInfo(tableLogOnInfo);
    table.LogOnInfo.ConnectionInfo.ServerName = connInfo.ServerName;
    table.LogOnInfo.ConnectionInfo.DatabaseName = connInfo.DatabaseName;
    table.LogOnInfo.ConnectionInfo.UserID = connInfo.UserID;
    table.LogOnInfo.ConnectionInfo.Password = connInfo.Password;

    // Apply the schema name to the table's location
    table.Location = "mySchema." + table.Location;
}

reportDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, path);

摘要

尝试从Crystal Reports连接到PostgreSQL数据库时，有两个关键信息。

必须在服务器名称属性中指定驱动程序，服务器和端口号。
如果以数据所有者以外的用户身份进行连接，则必须为要从中提取数据的每个表指定架构名称。

来源

有几个使用的来源没有在我的具体情况下有效的答案，但这使我朝着正确的方向前进。这些来源列在下面。

Answer 2

我刚经历了同样的考验。

我设置了这样的连接（其中sDataSource等...是带有信息的字符串）

    Dim myConnectionInfo As ConnectionInfo = New ConnectionInfo()
    myConnectionInfo.ServerName = sDataSource
    myConnectionInfo.DatabaseName = sInitialCatalog
    myConnectionInfo.UserID = sUserID
    myConnectionInfo.Password = sPassword

    Dim myTables As Tables = report.Database.Tables
    Dim myTableLogonInfo As TableLogOnInfo = New TableLogOnInfo()
    myTableLogonInfo.ConnectionInfo = myConnectionInfo
    For Each myTable As CrystalDecisions.CrystalReports.Engine.Table In myTables
        myTable.ApplyLogOnInfo(myTableLogonInfo)

        myTable.LogOnInfo.ConnectionInfo.DatabaseName = myTableLogonInfo.ConnectionInfo.DatabaseName
        myTable.LogOnInfo.ConnectionInfo.ServerName = myTableLogonInfo.ConnectionInfo.ServerName
        myTable.LogOnInfo.ConnectionInfo.UserID = myTableLogonInfo.ConnectionInfo.UserID
        myTable.LogOnInfo.ConnectionInfo.Password = myTableLogonInfo.ConnectionInfo.Password

    Next

Answer 3

首先感谢您提供此信息!!!

我正在使用MySQL / C＃/ Crystal Reports。设置ODBC / DSN之后，这对我来说很简单。

using CrystalDecisions.CrystalReports.Engine;

using CrystalDecisions.Shared;

using MySql.Data.MySqlClient;

.
.
.

ConnectionInfo connInfo = new ConnectionInfo();

connInfo.ServerName = "Driver={MySQL ODBC 3.51 Driver};DSN=MyODBCDatasourceName";

TableLogOnInfo tableLogOnInfo = new TableLogOnInfo();

tableLogOnInfo.ConnectionInfo = connInfo;

// rpt is my Crystal Reports ReportDocument

// Apply the schema name to the table's location

foreach (Table table in rpt.Database.Tables)

{

    table.ApplyLogOnInfo(tableLogOnInfo);

    table.Location = table.Location;

}

Answer 4

在水晶报表文件中更新ODBC。

我们使用ODBC与MSSQL，我们找不到如何更新C sharp项目中晶体文件中的ODBC。

通过这里提供的示例，我们能够找到在MSSQL中更新ODBC的方法，它就像这样简单：

       Cursor.Current = Cursors.WaitCursor;

        CrystalDecisions.Windows.Forms.CrystalReportViewer CR_Viewer;
        CR_Viewer = new CrystalDecisions.Windows.Forms.CrystalReportViewer();
        this.Controls.Add(CR_Viewer);

        ConnectionInfo connInfo = new ConnectionInfo();
        connInfo.ServerName = "YOUR ODBC NAME"; 

        TableLogOnInfo tableLogOnInfo = new TableLogOnInfo();
        tableLogOnInfo.ConnectionInfo = connInfo;

         //THIS IS A CRYSTAL RPT FILE DIFINE AS A CLASS
        Facturation_Nord_Ouest.Reports.Facture_Français CrystalReportFr;


       CrystalReportFr = new Facturation_Nord_Ouest.Reports.Facture_Français();

            for (int i = 0; i < CrystalReportFr.Database.Tables.Count; i++)
            {
                CrystalReportFr.Database.Tables[i].ApplyLogOnInfo(tableLogOnInfo);
            }
            CR_Viewer.ReportSource = CrystalReportFr;

        CR_Viewer.ActiveViewIndex = 0;
        CR_Viewer.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        CR_Viewer.Dock = System.Windows.Forms.DockStyle.Fill;
        CR_Viewer.Location = new System.Drawing.Point(0, 0);
        CR_Viewer.Size = new System.Drawing.Size(545, 379);
        CR_Viewer.TabIndex = 0;
        CR_Viewer.Name = "Invoice";
        CR_Viewer.Zoom(100);
        CR_Viewer.Show();

        Cursor.Current = Cursors.Default;

这样，水晶文件中的ODBC就会自动更新。

Answer 5

protected void Page_Load(object sender, EventArgs e)
        {
            try
            {

                ReportDocument cryRpt = new ReportDocument();
                TableLogOnInfos crtableLogoninfos = new TableLogOnInfos();
                TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
                ConnectionInfo crConnectionInfo = new ConnectionInfo();
                cryRpt.Load(@"D:\tem\WebAppReport\WebAppReport\CrystalReport1.rpt");
                crConnectionInfo.ServerName = "misserver";
                crConnectionInfo.DatabaseName = "testAccountability_data";
                crConnectionInfo.UserID = "RW";
                crConnectionInfo.Password = "RW";


                foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in cryRpt.Database.Tables)
                {
                    crtableLogoninfo = CrTable.LogOnInfo;
                    crtableLogoninfo.ConnectionInfo = crConnectionInfo;
                    CrTable.ApplyLogOnInfo(crtableLogoninfo);
                }

                CrystalReportViewer1.ReportSource = cryRpt;
                CrystalReportViewer1.RefreshReport();
            }
            catch
            {
            }






        }

Answer 6

这适用于Sql Server 2008 R2 for DSN连接较少。

Dim myConnectionInfo As CrystalDecisions.Shared.ConnectionInfo = New CrystalDecisions.Shared.ConnectionInfo()

    myConnectionInfo.ServerName = "Driver={SQL Server Native Client 10.0};Server=P03\sqlrs1;"
    myConnectionInfo.DatabaseName = "RS1DB"
    myConnectionInfo.UserID = "user"
    myConnectionInfo.Password = "pwd"

    For Each myTable As CrystalDecisions.CrystalReports.Engine.Table In mboReportDocument.Database.Tables

        Dim myTableLogonInfo As TableLogOnInfo = myTable.LogOnInfo
        myTableLogonInfo.ConnectionInfo = myConnectionInfo
        myTable.ApplyLogOnInfo(myTableLogonInfo)

    Next

如何在运行时更改Crystal Report的ODBC数据库连接？

6 个答案:

第1部分

第2部分

摘要

来源