Visual Basic 2005 Solution Center

Troubleshooting - Visual Basic 2005

• BUG: The Visual Basic .NET or Visual Basic 2005 Upgrade Wizard reports an incorrect warning message for user-defined data types
  Explains that you receive a warning message when you use the Visual Basic .NET or Visual Basic 2005 Upgrade Wizard on a Visual Basic 6.0 project with direct user-defined data type assignment between variables. Provides methods to resolve this...
• How to trace and debug in Visual Basic 2005 or in Visual Basic .NET
  Describes how to use the Debug and Trace class in Visual Basic .2005 or in Visual Basic .NET.
• DataSet contains duplicate records based on the SQL outer join query
  Explains that the DataTable may contain two copies of each record if you call the Fill method twice on a DataTable in a DataSet that is based on a SQL outer join statement. You can clear the DataTable before you reload the data to resolve this issue.
• Error message when you use square brackets as a delimited identified in Visual Basic 2005 or in Visual Basic .NET: "Identifier expected"
  Describes behavior that occurs in the IDE if you use square brackets instead of double quotation marks or parentheses for your delimited identifier.
• You receive an "Image Cannot be Converted to Icon" compiler error message after you upgrade a Visual Basic 6.0 project to Visual Basic .NET or Visual Basic 2005
  Explains that you receive an "Image Cannot be Converted to Icon" compiler error message after you upgrade a Visual Basic 6.0 project to Visual Basic .NET or Visual Basic 2005. Provides a solution to resolve this problem.
• ItemData property does not exist for ListBox and ComboBox controls
  Explains that ItemData property does not exist for ListBox and ComboBox controls. Provides a solution to resolve this problem.
• An "could not copy temporary files to the output directory" error is generated in Visual Studio .NET or in Visual Studio 2005
  Explains that you receive a "could not copy temporary files to the output directory" error message in Visual Studio .NET or Visual Studio 2005. Provides a solution to resolve this problem.
• BUG: UPGRADE comments overload the task list in Visual Basic .NET or in Visual Basic 2005 after the Upgrade Wizard runs
  Explains that the system stops responding if you try to remove an item from the long TODO list that is generated by the Upgrade Wizard when you use Visual Basic Upgrade Wizard to upgrade a Visual Basic 6.0 project.
• InvalidCastException when you bind DateTimePicker that contains a null value in Visual Basic
  Discusses behavior that occurs when the null value is represented by the System.DBNull object in Visual Basic 2005 or in Visual Basic .NET. Describes a way to avoid this behavior.
• How to implement the Dispose method in a derived class in Visual Basic .NET or in Visual Basic 2005
  Describes how to implement the Dispose method in a derived class in Visual Basic .NET or in Visual Basic 2005.
• You may receive an error message "<Method> is not accessible in this context because it is 'Protected'" when you try to implement an interface in Visual Basic
  Discusses behavior that occurs when you try to implement an interface that is marked as protected in a base class of Visual Basic 2005 or Visual Basic .NET.
• BUG: Upgrade Wizard incorrectly converts an ActiveX control's DataSource property when you upgrade a project from Visual Basic 6.0 to Visual Basic 2005 or to Visual Basic .NET
  Describes that the Visual Basic Upgrade Wizard does not migrate the DataSource property of the ActiveX controls correctly. Provides a method to resolve this problem.
• Visual Basic .NET or Visual Basic 2005 does not support the comImport attribute to manually declare a COM component
  Explains that you receive a "Method marked Abstract" error message when you use the Peverify.exe tool to verify Microsoft Intermediate Language (MSIL) and metadata information in a Visual Basic .NET or Visual Basic 2005 .exe file.
• BUG: The GetSchemaTable method of the SqlDataReader object returns the wrong column name
  Explains that the SqlDataReader.GetSchemaTable method returns the BaseServerName column that is not included in the .NET Framework Class Library SDK document. To resolve this problem, use the OleDbDataReader object.
• A LIKE statement does not return any data with Oracle character data type
  Explains that when you use a LIKE statement to search fixed-length character types, Oracle does not find any rows if their padding is different. Includes a resolution to the problem.
• Save method of Bitmap class does not truncate file size
  Describes that the file size is not truncated when you invoke the Save method of the Bitmap class. Includes a resolution.
• You may receive an error message when you use an invalid namespace in Visual Basic .NET or in Visual Basic 2005
  Describes that you may receive an error message when you use an invalid namespace in Visual Basic .NET or in Visual Basic 2005. This article provides some sample steps to reproduce the problem.
• DataSet column mapping throws an InvalidOperationException exception when the specified column is missing in ADO.NET
  Explains that an InvalidOperationException exception is thrown when you use DataSet column mapping in ADO.NET. Includes a resolution to the problem.
• Output parameters are not returned when you run an ADO.NET command in Visual Basic
  Explains that parameters are not returned when you run an ADO.NET command in Visual Basic. Includes a resolution.
• InvalidCastException exception when you reference the value of a DataColumn that is NULL
  Describes that when you reference the value of a DataColumn that is NULL you may receive an InvalidCastException exception. Provides a resolution.
• The DataAdapter.Fill method does not set all of the properties of the DataTable and DataColumn objects
  Explains that various properties of the DataTable and DataColumn objects are not set after you use the DataAdapter.Fill method. This article provides two methods to resolve this problem.
• Procedure View is not available in a Visual Basic 2005 or Visual Basic .NET project
  Describes the behavior of the IDE for Visual Basic 2005, Visual Basic .NET, and Visual Basic 6.0. The Outlining and Hiding (Collapse) Code feature in Visual Basic 2005 and in Visual Basic .NET is similar to Procedure View in Visual Basic 6.0.
• The CommandBuilder object may rebuild a command that you try to modify during the next call to the DataAdapter.Update method and your changes to the command may be lost
  Explains that the CommandBuilder object may rebuild a command that you try to modify during the next call to the DataAdapter.Update method, and your changes to the command may be lost. Includes a resolution.
• Error message when you use CommandBuilder: "An unhandled exception of type 'System.NullReferenceException' occurred"
  Explains that you receive an error message when you use CommandBuilder. Provides two methods to resolve this problem.
• Error when you try to call the Prepare method before you add parameters: "An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in system.data.dll"
  Explains that you receive an unhandled exception error in SQL Server 7.0 when you try to call the Prepare method before you add parameters.