View Replies (3)
Resolved Tableblob not working when MultipleActiveResultSets=FALSE
  1. Issue
  2.  ADO.NET
  3.  BLOB
0 Votes
  1. Brad Howie
  2. PowerBuilder
  3. Wednesday, 10 March 2021 12:49 AM UTC

I support a mature application using PowerBuilder 2017 R3 and SQL Server via ADO.Net.

Our user community recently requested we add signatures onto some of our datawindow documents.  The 'tableblob' datawindow object seems perfect for this, but unfortunately it doesn't seem to work when MultipleActiveResultSets=FALSE in the database connection ProviderString.  Our application requires MultipleActiveResultSets=FALSE, so I'm not sure how to get around this.  The error I receive from the datawindow preview painter is: 

"There is already an open DataReader associated with this Command which must be closed first".

Running a database trace against the datawindow retrieval shows that this error occurs after the initial datawindow data is retrieved, when it is trying to retrieve the tableblob blob data from the database.

If I set MultipleActiveResultSets=TRUE, everything works perfectly - the datawindow displays the blob image stored in the database as expected.  Unfortunately, this is not an option.

I also noticed that the 'PrintDataWindow' function will crash when trying to print the datawindow with the tableblob - we have a few areas in the application where this function is used.  This is unrelated to the MARS issue.

Is there a workaround that will allow me to display the blob image on the datawindow, when MultipleActiveResultSets=FALSE ?  I'd prefer not to change database drivers, if possible.  Using files is also not an option, we need to have the images/signatures stored in the database.

Thanks,

Brad

 

 

 

Launch PB 2019 R2 And R3 ... What is the best approach to display a menu with pictures
Responses (3)
  1. Likes
  2. Latest
  3. Oldest

Find Questions by Tag

.EXE .NET 6.0 .NET Assembly .NET Core 3.1 .NET Core Framework .NET DataStore .NET Std Framework 32-bit 64-bit ADO.NET AEM AI Algorithm Amazon AWS Android Apache API APK App Store App Store (Apple) Appeon Workspace Appeon Xcelerator Plug-in Architecture Array ASE Asynchronous Methods Authentication AutoBuild AutoCompiler Automated Testing Automation AutoScript Azure Barcode Base64 Batch BigData BLOB Branch & Merge Browser Bug Build Button C# C# Class Importer C# Editor C# Model generator Calendar Camera Certificate Chrome Citrix Class Client Client/Server Cloud Cluster Collection COM Command Line Compiler Compression Computed Field Configuration Controls Cookies Cordova Crash Cross-Platform Crosstab CSharpAssembly CSharpObject CSS CSV Cursor Data Database Database Driver Database Painter Database Profile Database Provider DataObject DataSource DataStore DataStore (C#) DataStore (PS) DataType DataWindow DATE DATETIME DB2 Debug Debugger Debugging Deployment Design DLL DO-WHILE Dockable Docker Documentation DOUBLE Download DragDrop Edge Edit Style Editor Elevate Conference Email Embedded SQL Emulator Encoding Encryption Enhancement Request Entity Entity Framework ERP Error Event Event Handler Event Handling Excel Exception Export Expression External Functions F# Field File File Access Filter Firefox Firewall Font FOR-NEXT Foreground Format Function Garbage Collection GeoLocation Git Graph HANA Hash Header HTML/5 HTTP/S HTTPClient Icon IDE Identity IIS IMAPI Import InfoMaker Inheritance Installation Integer IntelliSense Interface Internet Internet Explorer iOS IPA iPad iPhone IWA J# Java JavaScript JBoss JDBC JOIN JSON JSONGenerator JSONParser Kestrel Label Lambda Large File LDAP Library License LINQ Linux OS Load Balancing Localization Localized PBVM Log In Log Out Logging LONG LONGLONG macOS MAPI Maps MDI Memory Memory Leak Menu Merge MessageBox Messagging Method Migration MIME TYPE Mobile Model ModelStore ModelStore (C#) MSOLEDBSQL Multi Threading MVC MySQL n-Tier Namespace NativePDF NVO OAuth ODATA ODBC Office Offline OLE OLEDB Online Open Source OpenAPI OpenSSL Oracle OrcaScript Other Outlook Output Package Parameter Patch PayPal PB Classic PB Native PB.NET PBC PBD PBDOM PBG PBJVM PBL PBNI PBORCA PBVM PBX PDF Performance Permission PFC Picture Pipeline Play Store (Google) Plugin Popup Port POST PostgreSQL PowerBuilder PowerBuilder (Appeon) PowerBuilder (SAP) PowerBuilder Compiler PowerBuilder Runtime PowerClient PowerScript (PS) PowerScript IDE PowerScript Migrator PowerServer PowerServer Mobile PowerServer Toolkit PowerServer Web PowerServerLabel Print Properties Proxy Publish PULL PUSH Query Regression Release Renew Resize Response REST Retrieve RibbonBar RibbonBar Builder Rich Text Roadmap RPC Runtime Packager SaaS Scaffolding Script SDI SDK Security Server Service Session Single Sign-on Size SMTP SMTPClient SnapDevelop SOAP Sort Source Code Speech Recognition SQL SQL Anywhere SQL Server SqlBuilder SqlExecutor SQLite SqlModelMapper Storage Stored Procedure Subscription SVN Swagger Syntax TabbedBar TabbedView Tablet TabPage Target TE Control Testing Text TFS Theme TIME Timer TLS/SSL Tomcat TortoiseGit TortoiseSVN Transaction Transparency Trial Trigger TRY-CATCH TX Control Type UI ULONG UltraLite Uninstall Unit Test Unit Testing UNIX OS Update Upgrade Upload URL User Center User Object UWP Validation VARCHAR Variable Versioning Visual Studio Visual Studio Code VM Voice Warning WCF Web API Web Extensions Web Service WebBrowser WebForms WebLogic WebSphere WildFly WinAPI Window Windows OS WinForms Wizard Workgroup Workspace WPF XCODE XHTML XML Zoom
✖

Helpful?

If a reply or comment is helpful for you, please don’t hesitate to click the Helpful button. This action is further confirmation of their invaluable contribution to the Appeon Community.