在安装了数据库的服务器PC中运行该应用程序时,其工作并在数据库中显示项目,但是在客户端PC中安装并运行它时,则未显示任何错误。即时通讯使用vb.net 2013社区,将mysql用作数据库和SAP水晶报表版本13.0.12.1494,并且我正在使用odbc即时通讯连接我的数据库
这是它在我的服务器PC中工作的屏幕截图
这是我的客户端PC上的一个,您可以看到我的列表视图正在读取并显示数据库中的项目,但是当我点击打印时,水晶报表显示为空
这是我的应用程序配置和模块连接中的连接字符串
App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
</startup>
<connectionStrings>
<add name="MySqlConnectionString" connectionString="SERVER=192.168.1.2;DATABASE=payparkingsystem;UID=connect;PASSWORD=password;" />
</connectionStrings>
</configuration>
moduleconnection.vb。
Imports MySql.Data.MySqlClient
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System.Configuration
Module ModuleConnection
Public connString1 As String = ConfigurationManager.ConnectionStrings("MySqlConnectionString").ToString()
Public conn As MySqlConnection = New MySqlConnection(connString1)
Public sql As String = ""
Public Function ExecuteQuery(ByVal query As String) As DataTable
Dim sqlDT As New DataTable
Try
Dim sqlCon As New MySqlConnection(connString1)
Dim sqlDA As New MySqlDataAdapter(query, sqlCon)
Dim sqlCB As New MySqlCommandBuilder(sqlDA)
sqlDA.Fill(sqlDT)
Catch ex As Exception
End Try
Return sqlDT
End Function
End Module
这是我的打印代码
Public Sub PrintEmployeeAccountsLogsSearch()
Dim cryRpt As New ReportDocument
cryRpt.Load("C:\Reports\CrystalReportPrintEmployeeAccountsLogsSearch.vb.rpt")
Dim crParameterFieldDefinitions As ParameterFieldDefinitions
Dim crParameterFieldDefinition As ParameterFieldDefinition
Dim crParameterValues As New ParameterValues
Dim crParameterDiscreteValue As New ParameterDiscreteValue
crParameterDiscreteValue.Value = print
crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields
crParameterFieldDefinition = crParameterFieldDefinitions.Item("My Parameter")
crParameterValues = crParameterFieldDefinition.CurrentValues
crParameterValues.Clear()
crParameterValues.Add(crParameterDiscreteValue)
crParameterFieldDefinition.ApplyCurrentValues(crParameterValues)
FormPrintEmployeeAccountsLogsSearch.CrystalReportViewer1.ReportSource = cryRpt
FormPrintEmployeeAccountsLogsSearch.CrystalReportViewer1.Refresh()
cryRpt.PrintToPrinter(1, True, 0, 0)
End Sub
这是我的数据库的屏幕截图
我希望有人能帮助我解决我的错误,对您的帮助将不胜感激。在此先感谢您和更多有能力的人!
答案 0 :(得分:0)
您是否从客户端连接数据库?