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sql server reporting services : How to display an image from custom assembly
assembly. I followed Robert Bruckner's method (below) from a previos thread in this news group. The chart displays fine in the designer preview, but appears as an 'X' image when deployed to the report server. I'm pretty sure I've copied the .dlls to the right spot and added the references correctly. I am able to display simple text from my assembly into a text box when deployed to the server ... but not an image. Has anyone been able to display a Dundas chart via a custom assembly? Are there specific Code Access Security Settings for the Dundas .dll that must be set in the Rept Svcs config file? Thanks, Bill ----------------------------- From Robert Bruckner: Please try this: * Add an image to your report * Set the image type to Database * Set the image mimetype to e.g. image/png * For the image value use an expression like =MyCustomAssembly.GenerateChart() Note: your custom assembly call has to return the image as byte[]. Here is a code snippet which should convert the Dundas chart output into a byte array: public static byte[] GenerateChart() { // chart rendering code ... // save chart image to byte[] System.IO.MemoryStream renderedImage = new MemoryStream(); dundasChart.ImageType = ChartImageType.Png; dundasChart.Save(renderedImage); renderedImage.Position = 0; return renderedImage.ToArray(); }
There can be several issues here. The first thing I would check is that your
custom assembly works correctly in the "stand-alone preview" of report designer: * Load the report project in report designer. * Hit F5 (to startup the stand-alone preview and run the report) If the report does not work there, then missing security permission asserts in rsPreviewPolicy.config as well as in rsSrvPolicy.config cause the issue. If you are using the Dundas chart library your custom assembly will need to have Fulltrust permissions and assert these security permissions before invoking any Dundas API methods and properties. The static function call in the custom assembly would need to look like this when asserting the permissions through attributes (C#): [PermissionSet(SecurityAction.Assert, Unrestricted=true)] public static byte[] GenerateChart() { // chart rendering code // ... } In addition you need to add the FullTrust permissions in the config files. Make sure to have them in the correct location inside the config files - position matters! <CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="FullTrust" Name="MyNewCodeGroup" Description="A special code group for my custom assembly."> <IMembershipCondition class="UrlMembershipCondition" version="1.0.0.0" Url="C:\MyCustomAssembly.dll"/> </CodeGroup> See also: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/dngrfCodeAccessSecurityInSQLServer2000ReportingServices.asp HTH, Robert -- This posting is provided "AS IS" with no warranties, and confers no rights. [quoted text, click to view] "billd" <billd@discussions.microsoft.com> wrote in message news:62AF0CC1-7444-4B85-891A-62D088C86F01@microsoft.com... > I am trying to display a chart from the Dundas chart library via a custom > assembly. > > I followed Robert Bruckner's method (below) from a previos thread in this > news group. The chart displays fine in the designer preview, but appears as > an 'X' image when deployed to the report server. > > I'm pretty sure I've copied the .dlls to the right spot and added the > references correctly. I am able to display simple text from my assembly into > a text box when deployed to the server ... but not an image. > > Has anyone been able to display a Dundas chart via a custom assembly? Are > there specific Code Access Security Settings for the Dundas .dll that must be > set in the Rept Svcs config file? > > Thanks, > Bill > > ----------------------------- > From Robert Bruckner: > > Please try this: > * Add an image to your report > * Set the image type to Database > * Set the image mimetype to e.g. image/png > * For the image value use an expression like > =MyCustomAssembly.GenerateChart() > > Note: your custom assembly call has to return the image as byte[]. > Here is a code snippet which should convert the Dundas chart output into a > byte array: > > public static byte[] GenerateChart() > { > // chart rendering code > ... > > // save chart image to byte[] > System.IO.MemoryStream renderedImage = new MemoryStream(); > dundasChart.ImageType = ChartImageType.Png; > dundasChart.Save(renderedImage); > renderedImage.Position = 0; > return renderedImage.ToArray(); > } >
Thanks Robert. I got it working ... sort of.
I added the codegroup below to the rssrvpolicy.config file. (I got the blob for the control via secutil -hex -s DundasWebGauge.dll) <CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="FullTrust" Name="DundasGauge_Strong_Name" Description="This code group grants Dundas gauge assembly. "> <IMembershipCondition class="StrongNameMembershipCondition" version="1" PublicKeyBlob="00240000048000009400000006020000002400005253413100040000010001007900AC08414E1C4AF3910919D020AD041966F2F8DF512B15187D2E7CEC6FB25FF8CBD08B10E1BF7A602AD4B7D8B597F64160A06924BD445CEDD06FA9D866C9D5F78DEE2E15351035D01869E8F67CE717AD291A3125192EA97E2619330831E5851B5487243A8ED9F8798B3021758A8EA0CCB37E84B4E9E33D3E417C5521500DD3"/> </CodeGroup> After putting this entry in and setting the security asserts, the dudas image appears. However, it seems pretty quirky. After I re-deploy the report or re-copy the custom assmbly to the rept. svcs. bin directory, I need to close the Report Manager and re-open it and then hit refresh a few times before the image finally appears. - Bill [quoted text, click to view] "billd" wrote:
> I am trying to display a chart from the Dundas chart library via a custom > assembly. > > I followed Robert Bruckner's method (below) from a previos thread in this > news group. The chart displays fine in the designer preview, but appears as > an 'X' image when deployed to the report server. > > I'm pretty sure I've copied the .dlls to the right spot and added the > references correctly. I am able to display simple text from my assembly into > a text box when deployed to the server ... but not an image. > > Has anyone been able to display a Dundas chart via a custom assembly? Are > there specific Code Access Security Settings for the Dundas .dll that must be > set in the Rept Svcs config file? > > Thanks, > Bill > > ----------------------------- > From Robert Bruckner: > > Please try this: > * Add an image to your report > * Set the image type to Database > * Set the image mimetype to e.g. image/png > * For the image value use an expression like > =MyCustomAssembly.GenerateChart() > > Note: your custom assembly call has to return the image as byte[]. > Here is a code snippet which should convert the Dundas chart output into a > byte array: > > public static byte[] GenerateChart() > { > // chart rendering code > ... > > // save chart image to byte[] > System.IO.MemoryStream renderedImage = new MemoryStream(); > dundasChart.ImageType = ChartImageType.Png; > dundasChart.Save(renderedImage); > renderedImage.Position = 0; > return renderedImage.ToArray(); > }
Robert,
I just need to add a reference to my custom assembly? Is there no need to add a "fulltrust" entry for the Dundas .dll in the report services configuration file? (I am using the Gauge library) Thx, Bill [quoted text, click to view] "Robert Bruckner [MSFT]" wrote:
> There can be several issues here. The first thing I would check is that your > custom assembly works correctly in the "stand-alone preview" of report > designer: > * Load the report project in report designer. > * Hit F5 (to startup the stand-alone preview and run the report) > > If the report does not work there, then missing security permission asserts > in rsPreviewPolicy.config as well as in rsSrvPolicy.config cause the issue. > If you are using the Dundas chart library your custom assembly will need to > have Fulltrust permissions and assert these security permissions before > invoking any Dundas API methods and properties. > > The static function call in the custom assembly would need to look like this > when asserting the permissions through attributes (C#): > > [PermissionSet(SecurityAction.Assert, Unrestricted=true)] > public static byte[] GenerateChart() > { > // chart rendering code > // ... > > } > > In addition you need to add the FullTrust permissions in the config files. > Make sure to have them in the correct location inside the config files - > position matters! > > <CodeGroup class="UnionCodeGroup" > version="1" > PermissionSetName="FullTrust" > Name="MyNewCodeGroup" > Description="A special code group for my custom > assembly."> > <IMembershipCondition > class="UrlMembershipCondition" > version="1.0.0.0" > Url="C:\MyCustomAssembly.dll"/> > </CodeGroup> > > See also: > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/dngrfCodeAccessSecurityInSQLServer2000ReportingServices.asp > > > HTH, > Robert > > -- > This posting is provided "AS IS" with no warranties, and confers no rights. > > > > "billd" <billd@discussions.microsoft.com> wrote in message > news:62AF0CC1-7444-4B85-891A-62D088C86F01@microsoft.com... > > I am trying to display a chart from the Dundas chart library via a custom > > assembly. > > > > I followed Robert Bruckner's method (below) from a previos thread in this > > news group. The chart displays fine in the designer preview, but appears > as > > an 'X' image when deployed to the report server. > > > > I'm pretty sure I've copied the .dlls to the right spot and added the > > references correctly. I am able to display simple text from my assembly > into > > a text box when deployed to the server ... but not an image. > > > > Has anyone been able to display a Dundas chart via a custom assembly? Are > > there specific Code Access Security Settings for the Dundas .dll that must > be > > set in the Rept Svcs config file? > > > > Thanks, > > Bill > > > > ----------------------------- > > From Robert Bruckner: > > > > Please try this: > > * Add an image to your report > > * Set the image type to Database > > * Set the image mimetype to e.g. image/png > > * For the image value use an expression like > > =MyCustomAssembly.GenerateChart() > > > > Note: your custom assembly call has to return the image as byte[]. > > Here is a code snippet which should convert the Dundas chart output into a > > byte array: > > > > public static byte[] GenerateChart() > > { > > // chart rendering code > > ... > > > > // save chart image to byte[] > > System.IO.MemoryStream renderedImage = new MemoryStream(); > > dundasChart.ImageType = ChartImageType.Png; > > dundasChart.Save(renderedImage); > > renderedImage.Position = 0; > > return renderedImage.ToArray(); > > } > > > >
If you are working based on RS 2000, the policy files contain already a
Fulltrust entry for the Dundas chart control. If the Dundas Gauge library has the same public key blob, then it will also get Fulltrust privileges. If the library uses a different public key blob, you need to explicitly add Fulltrust permissions to the configuration files. -- This posting is provided "AS IS" with no warranties, and confers no rights. [quoted text, click to view] "billd" <billd@discussions.microsoft.com> wrote in message news:94169FB2-8542-4F42-AEA1-AE46D1ABAA10@microsoft.com... > Robert, > > I just need to add a reference to my custom assembly? > > Is there no need to add a "fulltrust" entry for the Dundas .dll in the > report services configuration file? (I am using the Gauge library) > > Thx, > Bill > > > > "Robert Bruckner [MSFT]" wrote: > > > There can be several issues here. The first thing I would check is that your > > custom assembly works correctly in the "stand-alone preview" of report > > designer: > > * Load the report project in report designer. > > * Hit F5 (to startup the stand-alone preview and run the report) > > > > If the report does not work there, then missing security permission asserts > > in rsPreviewPolicy.config as well as in rsSrvPolicy.config cause the issue. > > If you are using the Dundas chart library your custom assembly will need to > > have Fulltrust permissions and assert these security permissions before > > invoking any Dundas API methods and properties. > > > > The static function call in the custom assembly would need to look like this > > when asserting the permissions through attributes (C#): > > > > [PermissionSet(SecurityAction.Assert, Unrestricted=true)] > > public static byte[] GenerateChart() > > { > > // chart rendering code > > // ... > > > > } > > > > In addition you need to add the FullTrust permissions in the config files. > > Make sure to have them in the correct location inside the config files - > > position matters! > > > > <CodeGroup class="UnionCodeGroup" > > version="1" > > PermissionSetName="FullTrust" > > Name="MyNewCodeGroup" > > Description="A special code group for my custom > > assembly."> > > <IMembershipCondition > > class="UrlMembershipCondition" > > version="1.0.0.0" > > Url="C:\MyCustomAssembly.dll"/> > > </CodeGroup> > > > > See also: > > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/dngrfCodeAccessSecurityInSQLServer2000ReportingServices.asp > > > > > > HTH, > > Robert > > > > -- > > This posting is provided "AS IS" with no warranties, and confers no rights. > > > > > > > > "billd" <billd@discussions.microsoft.com> wrote in message > > news:62AF0CC1-7444-4B85-891A-62D088C86F01@microsoft.com... > > > I am trying to display a chart from the Dundas chart library via a custom > > > assembly. > > > > > > I followed Robert Bruckner's method (below) from a previos thread in this > > > news group. The chart displays fine in the designer preview, but appears > > as > > > an 'X' image when deployed to the report server. > > > > > > I'm pretty sure I've copied the .dlls to the right spot and added the > > > references correctly. I am able to display simple text from my assembly > > into > > > a text box when deployed to the server ... but not an image. > > > > > > Has anyone been able to display a Dundas chart via a custom assembly? Are > > > there specific Code Access Security Settings for the Dundas .dll that must > > be > > > set in the Rept Svcs config file? > > > > > > Thanks, > > > Bill > > > > > > ----------------------------- > > > From Robert Bruckner: > > > > > > Please try this: > > > * Add an image to your report > > > * Set the image type to Database > > > * Set the image mimetype to e.g. image/png > > > * For the image value use an expression like > > > =MyCustomAssembly.GenerateChart() > > > > > > Note: your custom assembly call has to return the image as byte[]. > > > Here is a code snippet which should convert the Dundas chart output into a > > > byte array: > > > > > > public static byte[] GenerateChart() > > > { > > > // chart rendering code > > > ... > > > > > > // save chart image to byte[] > > > System.IO.MemoryStream renderedImage = new MemoryStream(); > > > dundasChart.ImageType = ChartImageType.Png; > > > dundasChart.Save(renderedImage); > > > renderedImage.Position = 0; > > > return renderedImage.ToArray(); > > > } > > > > > > > > >
Thanks. This is a tricky process. I was able to get a gauge to appear in a
deployed report on one development computer, but not on any others. They all work fine in preview mode. The config files are identical on all machines. Odds are that it is a securty problem. But are there logs (or any other indicatior) that will give me information of what is going wrong beyond just seeing the broken image icon? Regards, Bill [quoted text, click to view] "Robert Bruckner [MSFT]" wrote:
> If you are working based on RS 2000, the policy files contain already a > Fulltrust entry for the Dundas chart control. If the Dundas Gauge library > has the same public key blob, then it will also get Fulltrust privileges. If > the library uses a different public key blob, you need to explicitly add > Fulltrust permissions to the configuration files. > > -- > This posting is provided "AS IS" with no warranties, and confers no rights. > > > "billd" <billd@discussions.microsoft.com> wrote in message > news:94169FB2-8542-4F42-AEA1-AE46D1ABAA10@microsoft.com... > > Robert, > > > > I just need to add a reference to my custom assembly? > > > > Is there no need to add a "fulltrust" entry for the Dundas .dll in the > > report services configuration file? (I am using the Gauge library) > > > > Thx, > > Bill > > > > > > > > "Robert Bruckner [MSFT]" wrote: > > > > > There can be several issues here. The first thing I would check is that > your > > > custom assembly works correctly in the "stand-alone preview" of report > > > designer: > > > * Load the report project in report designer. > > > * Hit F5 (to startup the stand-alone preview and run the report) > > > > > > If the report does not work there, then missing security permission > asserts > > > in rsPreviewPolicy.config as well as in rsSrvPolicy.config cause the > issue. > > > If you are using the Dundas chart library your custom assembly will need > to > > > have Fulltrust permissions and assert these security permissions before > > > invoking any Dundas API methods and properties. > > > > > > The static function call in the custom assembly would need to look like > this > > > when asserting the permissions through attributes (C#): > > > > > > [PermissionSet(SecurityAction.Assert, Unrestricted=true)] > > > public static byte[] GenerateChart() > > > { > > > // chart rendering code > > > // ... > > > > > > } > > > > > > In addition you need to add the FullTrust permissions in the config > files. > > > Make sure to have them in the correct location inside the config files - > > > position matters! > > > > > > <CodeGroup class="UnionCodeGroup" > > > version="1" > > > PermissionSetName="FullTrust" > > > Name="MyNewCodeGroup" > > > Description="A special code group for my > custom > > > assembly."> > > > <IMembershipCondition > > > class="UrlMembershipCondition" > > > version="1.0.0.0" > > > Url="C:\MyCustomAssembly.dll"/> > > > </CodeGroup> > > > > > > See also: > > > > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/dngrfCodeAccessSecurityInSQLServer2000ReportingServices.asp > > > > > > > > > HTH, > > > Robert > > > > > > -- > > > This posting is provided "AS IS" with no warranties, and confers no > rights. > > > > > > > > > > > > "billd" <billd@discussions.microsoft.com> wrote in message > > > news:62AF0CC1-7444-4B85-891A-62D088C86F01@microsoft.com... > > > > I am trying to display a chart from the Dundas chart library via a > custom > > > > assembly. > > > > > > > > I followed Robert Bruckner's method (below) from a previos thread in > this > > > > news group. The chart displays fine in the designer preview, but > appears > > > as > > > > an 'X' image when deployed to the report server. > > > > > > > > I'm pretty sure I've copied the .dlls to the right spot and added the > > > > references correctly. I am able to display simple text from my > assembly > > > into > > > > a text box when deployed to the server ... but not an image. > > > > > > > > Has anyone been able to display a Dundas chart via a custom assembly? > Are > > > > there specific Code Access Security Settings for the Dundas .dll that > must > > > be > > > > set in the Rept Svcs config file? > > > > > > > > Thanks, > > > > Bill > > > > > > > > ----------------------------- > > > > From Robert Bruckner: > > > > > > > > Please try this: > > > > * Add an image to your report > > > > * Set the image type to Database > > > > * Set the image mimetype to e.g. image/png > > > > * For the image value use an expression like > > > > =MyCustomAssembly.GenerateChart() > > > > > > > > Note: your custom assembly call has to return the image as byte[]. > > > > Here is a code snippet which should convert the Dundas chart output > into a > > > > byte array: > > > > > > > > public static byte[] GenerateChart() > > > > { > > > > // chart rendering code > > > > ... > > > > > > > > // save chart image to byte[] > > > > System.IO.MemoryStream renderedImage = new MemoryStream(); > > > > dundasChart.ImageType = ChartImageType.Png; > > > > dundasChart.Save(renderedImage); > > > > renderedImage.Position = 0; > > > > return renderedImage.ToArray(); > > > > } > > > > > > > > > > > > > > >
Just to confirm - with "preview mode" you mean the stand-alone preview (F5),
right? If it does not work in the stand-alone preview than you could use these steps to track down security exceptions: http://msdn.microsoft.com/library/en-us/RSPROG/htm/rsp_prog_rdl_8wyq.asp What are the differences between the machine that works and the others that don't? Same OS? Same IIS? Same network/firewall configuration? Do any of the machines have computer names that contain characters like "_"? On the machines where the reports won't work, do trivial reports work correctly that contain just an image? You may want to try the following on one of the machines where it does not work: * run iisreset and then navigate to http://localhost/reports * launch Visual Studio .NET 2003 and open your custom assembly project * set breakpoints inside your custom assembly code * attach the VS debugger to aspnet_wp.exe (IIS5) or w3wp.exe (IIS6) make sure to check the option that the debugger is invoked when a CLR exception is thrown * run the report and watch for SecurityExceptions; also look into the VS output window -- This posting is provided "AS IS" with no warranties, and confers no rights. [quoted text, click to view] "billd" <billd@discussions.microsoft.com> wrote in message
news:25CD29CE-E6C7-41A0-AC56-D29020643B37@microsoft.com... > Thanks. This is a tricky process. I was able to get a gauge to appear in a > deployed report on one development computer, but not on any others. They all > work fine in preview mode. The config files are identical on all machines. > > Odds are that it is a securty problem. But are there logs (or any other > indicatior) that will give me information of what is going wrong beyond just > seeing the broken image icon? > > Regards, > Bill > > > "Robert Bruckner [MSFT]" wrote: > > > If you are working based on RS 2000, the policy files contain already a > > Fulltrust entry for the Dundas chart control. If the Dundas Gauge library > > has the same public key blob, then it will also get Fulltrust privileges. If > > the library uses a different public key blob, you need to explicitly add > > Fulltrust permissions to the configuration files. > > > > -- > > This posting is provided "AS IS" with no warranties, and confers no rights. > > > > > > "billd" <billd@discussions.microsoft.com> wrote in message > > news:94169FB2-8542-4F42-AEA1-AE46D1ABAA10@microsoft.com... > > > Robert, > > > > > > I just need to add a reference to my custom assembly? > > > > > > Is there no need to add a "fulltrust" entry for the Dundas .dll in the > > > report services configuration file? (I am using the Gauge library) > > > > > > Thx, > > > Bill > > > > > > > > > > > > "Robert Bruckner [MSFT]" wrote: > > > > > > > There can be several issues here. The first thing I would check is that > > your > > > > custom assembly works correctly in the "stand-alone preview" of report > > > > designer: > > > > * Load the report project in report designer. > > > > * Hit F5 (to startup the stand-alone preview and run the report) > > > > > > > > If the report does not work there, then missing security permission > > asserts > > > > in rsPreviewPolicy.config as well as in rsSrvPolicy.config cause the > > issue. > > > > If you are using the Dundas chart library your custom assembly will need > > to > > > > have Fulltrust permissions and assert these security permissions before > > > > invoking any Dundas API methods and properties. > > > > > > > > The static function call in the custom assembly would need to look like > > this > > > > when asserting the permissions through attributes (C#): > > > > > > > > [PermissionSet(SecurityAction.Assert, Unrestricted=true)] > > > > public static byte[] GenerateChart() > > > > { > > > > // chart rendering code > > > > // ... > > > > > > > > } > > > > > > > > In addition you need to add the FullTrust permissions in the config > > files. > > > > Make sure to have them in the correct location inside the config files - > > > > position matters! > > > > > > > > <CodeGroup class="UnionCodeGroup" > > > > version="1" > > > > PermissionSetName="FullTrust" > > > > Name="MyNewCodeGroup" > > > > Description="A special code group for my > > custom > > > > assembly."> > > > > <IMembershipCondition > > > > class="UrlMembershipCondition" > > > > version="1.0.0.0" > > > > Url="C:\MyCustomAssembly.dll"/> > > > > </CodeGroup> > > > > > > > > See also: > > > > > > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql2k/html/dngrfCodeAccessSecurityInSQLServer2000ReportingServices.asp > > > > > > > > > > > > HTH, > > > > Robert > > > > > > > > -- > > > > This posting is provided "AS IS" with no warranties, and confers no > > rights. > > > > > > > > > > > > > > > > "billd" <billd@discussions.microsoft.com> wrote in message > > > > news:62AF0CC1-7444-4B85-891A-62D088C86F01@microsoft.com... > > > > > I am trying to display a chart from the Dundas chart library via a > > custom > > > > > assembly. > > > > > > > > > > I followed Robert Bruckner's method (below) from a previos thread in > > this > > > > > news group. The chart displays fine in the designer preview, but > > appears > > > > as > > > > > an 'X' image when deployed to the report server. > > > > > > > > > > I'm pretty sure I've copied the .dlls to the right spot and added the > > > > > references correctly. I am able to display simple text from my > > assembly > > > > into > > > > > a text box when deployed to the server ... but not an image. > > > > > > > > > > Has anyone been able to display a Dundas chart via a custom assembly? > > Are > > > > > there specific Code Access Security Settings for the Dundas .dll that > > must > > > > be > > > > > set in the Rept Svcs config file? > > > > > > > > > > Thanks, > > > > > Bill > > > > > > > > > > ----------------------------- > > > > > From Robert Bruckner: > > > > > > > > > > Please try this: > > > > > * Add an image to your report > > > > > * Set the image type to Database > > > > > * Set the image mimetype to e.g. image/png > > > > > * For the image value use an expression like > > > > > =MyCustomAssembly.GenerateChart() > > > > > > > > > > Note: your custom assembly call has to return the image as byte[]. > > > > > Here is a code snippet which should convert the Dundas chart output > > into a > > > > > byte array: > > > > > > > > > > public static byte[] GenerateChart() > > > > > { > > > > > // chart rendering code > > > > > ... > > > > > > > > > > // save chart image to byte[] > > > > > System.IO.MemoryStream renderedImage = new MemoryStream();
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