我制作了一个VB.NET程序，通过ODBC访问某些数据库。在Windows 7机器上它工作正常。在它安装的Windows XP计算机上，但是当它打开应用程序时，会发生此错误。我在Visual Studio 2012上开发了这个，Windows 7和Windows XP都是x86，并且两者都具有我尝试访问的相同的系统DSN。我到处寻找，但没有任何具体问题。有任何想法吗？提前谢谢！
************** Exception Text **************
System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
at System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode)
at System.Data.Odbc.OdbcConnectionHandle..ctor(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle)
at System.Data.Odbc.OdbcConnectionOpen..ctor(OdbcConnection outerConnection, OdbcConnectionString connectionOptions)
at System.Data.Odbc.OdbcConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.Odbc.OdbcConnection.Open()
at System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState)
at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
at CRManager.DataSet3TableAdapters.PartitionsSetTableAdapter.Fill(PartitionsSetDataTable dataTable)
at CRManager.Form1.Form1_Load(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3649 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
Crystal Reports Manager
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/jose.laverde/Local%20Settings/Apps/2.0/BOZHZTXY.AG4/CEDJGE66.BYJ/crys..tion_d4261ff73e300d69_0001.0001_e75947b0658a5fbd/Crystal%20Reports%20Manager.exe
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3644 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3645 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3644 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Runtime.Remoting
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll
----------------------------------------
Microsoft.VisualBasic.PowerPacks.Vs
Assembly Version: 10.0.0.0
Win32 Version: 11.0.50727.1
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic.PowerPacks.Vs/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.PowerPacks.Vs.dll
----------------------------------------
CrystalDecisions.Windows.Forms
Assembly Version: 13.0.2000.0
Win32 Version: 13.0.5.891
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/CrystalDecisions.Windows.Forms/13.0.2000.0__692fbea5521e1304/CrystalDecisions.Windows.Forms.dll
----------------------------------------
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3650 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
CrystalDecisions.Shared
Assembly Version: 13.0.2000.0
Win32 Version: 13.0.5.891
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/CrystalDecisions.Shared/13.0.2000.0__692fbea5521e1304/CrystalDecisions.Shared.dll
----------------------------------------
CrystalDecisions.ReportSource
Assembly Version: 13.0.2000.0
Win32 Version: 13.0.5.891
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/CrystalDecisions.ReportSource/13.0.2000.0__692fbea5521e1304/CrystalDecisions.ReportSource.dll
----------------------------------------
log4net
Assembly Version: 1.2.10.0
Win32 Version: 1.2.10.0
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/log4net/1.2.10.0__692fbea5521e1304/log4net.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3650 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Web
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3648 (GDR.050727-3600)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Web/2.0.0.0__b03f5f7f11d50a3a/System.Web.dll
----------------------------------------
System.Data.DataSetExtensions
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.1 built by: SP
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Data.DataSetExtensions/3.5.0.0__b77a5c561934e089/System.Data.DataSetExtensions.dll
----------------------------------------
System.Core
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.1 built by: SP
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Core/3.5.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Transactions
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Transactions/2.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
答案 0 :(得分：3)
错误消息明确指出您的程序找不到DSN。检查DSN的位数是否正确。有关64位/ 32位混淆的描述，请参阅http://support.microsoft.com/kb/942976。
答案 1 :(得分：2)
遇到同样的问题。在Windows 7 64位上有1个VB proj工作正常。 启动了另一个项目，复制了我需要的代码，但是说找不到DSN失败了。阅读了Frank的评论后，我进入了VS 2010中的配置管理器并添加了一个新的“任何CPU”的“活动解决方案平台”并重新启动了我的项目，一切正常。我的项目现在有点像另一个有效的项目。
克里斯蒂安
答案 2 :(得分：0)
感谢您的这篇文章，它解决了我的问题，虽然在我的情况下，我有一个VB项目在SQLExpress数据库上工作正常，但当我尝试将连接字符串更改为Access数据库时，我给出了上述错误。但在另一个项目中，我连接到Access数据库就好了。 “任何CPU”已设置，我将其更改为“x86”，然后它对我有用。