How to enumerate the variables contained in an MRT file

[kgb2013]

Hello.

I need to retrieve the variables (and their type) used in an MRT file.
Is there a standard way of doing this through your library or I will have to parse the MRT XML myself?
I see that the :

Code: Select all

StiReport.Variables

is only for the code-defined variables.

Thanks.

[HighAley]

Hello.

You could find all variables here:

Code: Select all

StiReport.Dictionary.Variables

Thank you.

[kgb2013]

For some reason, even

Code: Select all

StiReport.Dictionary.Variables

...is empty.

Please check if I do anything wrong (see attached image):

I need to have MRT files with SQL queries that accept parameters in their code.
So, I have written some SQL queries with variables contained in them (like "SELECT * FROM STH WHERE Id=@IdParam").
Next, I have added the parameter "IdParam" and set it's expression to "IdParam" trying to get the value of a (user provided) variable (which is defined in the variables of the MRT report).
I have checked the option "Request From User" for this variable. (However I have some variables that don't have this set because I need to fill them by code - I don't know if this matters.)
Next, I set in my code the report property to make the UI show the parmeter's input area:

Code: Select all

StiReport report = ...;
report.RequestParameters = true;

However, this doesn't show the parameter input area and my StiReport.Dictionary.Variables is empty.

Am I missing something?

Thanks.

[kgb2013]

I see that in your demo:
Stimulsoft Reports.Web 2013.2 Trial\Samples\ASP.NET MVC\MvcViewer (Razor)\MvcViewer (Razor)
..you use a StiReport-derived class for the report that supports input of parameters.
Is this nessesary? What is this file (ParametersSelectingCountry.cs) doing? It looks like auto-generated.

If I just do this:

Code: Select all

		StiReport GetReport()
		{
				var report = new StiReport();
				SetReportParameters(report);
				report.Load(mrtFilePath);
		}

		public ActionResult GetReportSnapshot(ListModel model)
		{
			using(var report = GetReport(model))
			{
				return StiMvcViewer.GetReportSnapshotResult(HttpContext, report);
			}
		}

..won't the parameters area appear when there are parameters defined in the MRT ?

[kgb2013]

By the way, I do see the variables in :

Code: Select all

StiReport.Dictionary.Variables

I was doing sth wrong before.
Silly me...

But the varaible declaration area in the viewer insists on not showing up.
Instead, it tries to execute the query without the parameters being provided and it generates an error.

[Vladimir]

Hello,

For correct work with the variables in MvcViewer, you need to identify ActionInteraction. For details, please see the example below:

http://www.stimulsoft.com/en/documentat ... meters.htm

Thank you.

[kgb2013]

Thanks.

I have added these:

Code: Select all

		new StiMvcViewerOptions()
		{
			...
			ActionInteraction = "Interaction",
		...


		public ActionResult Interaction()
		{
			using (var report = GetReport())
			{
				return StiMvcViewer.InteractionResult(this.HttpContext, report);
			}
		}

Now, I see the parameters area, but only after an error (it calls "ActionGetReportSnapshot" before showing the parameters area - perhaps this http://forum.stimulsoft.com/viewtopic.p ... 84&p=68702 can help me on that).

And when I submit the parameters, again it throws this exception:

The parameterized query '............................' expects the parameter '@ToDate', which was not supplied.

at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
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 Stimulsoft.Report.Dictionary.StiSqlSource.UpdateParameters()
at Stimulsoft.Report.Dictionary.StiSqlAdapterService.ConnectDataSourceToData(StiDictionary dictionary, StiDataSource dataSource, Boolean loadData)
at Stimulsoft.Report.Dictionary.StiDataSource.Connect(StiDataCollection datas, Boolean loadData)
at Stimulsoft.Report.Dictionary.StiDataSourcesCollection.Connect(StiDataCollection datas, Boolean loadData)
at Stimulsoft.Report.Dictionary.StiDataSourcesCollection.Connect(Boolean loadData)
at Stimulsoft.Report.Dictionary.StiDictionary.Connect(Boolean loadData)
at Stimulsoft.Report.Dictionary.StiDictionary.Connect()
at Stimulsoft.Report.Engine.StiRenderProviderV2.ConnectToData(StiReport report)
at Stimulsoft.Report.Engine.StiRenderProviderV2.Render(StiReport report, StiRenderState state)
at Stimulsoft.Report.Engine.StiReportV2Builder.RenderSingleReport(StiReport masterReport, StiRenderState renderState)
at Stimulsoft.Report.StiReport.RenderReport(StiRenderState renderState)
at Stimulsoft.Report.StiReport.Render(StiRenderState renderState, StiGuiMode guiMode)
at Stimulsoft.Report.StiReport.Render(StiRenderState renderState)
at Stimulsoft.Report.StiReport.Render(Boolean showProgress, Int32 fromPage, Int32 toPage)
at Stimulsoft.Report.StiReport.Render(Boolean showProgress)
at Stimulsoft.Report.Mvc.StiMvcViewer.SaveReportObject(HttpContextBase httpContext, StiReport report)
at Stimulsoft.Report.Mvc.StiMvcViewer.InteractionResult(HttpContextBase httpContext, StiReport report)

The "ToDate" parameter is in the parameters area and it is filled-in when I press the submit!

[Vladimir]

Hello,

Please try to set the RequestParameters property of the report to True.
This should help in this situation.

Thank you.

[kgb2013]

Yes, I have this set in the MRT file and I also do it in code:

Code: Select all

StiReport report = new StiReport();
report.Load(mrtFile);
report.RequestParameters = true;

Now I have also tried these:

Code: Select all

report.Dictionary.DataSources["MyDataSource"].Parameters[key].Value = (string)dic[key];
report.Dictionary.Variables[key].Value = (string)dic[key];

.and they don't seem to help.

Is the way I setup the MRT file in the screenshots above correct?

[kgb2013]

I have found that I was doing sth wrong in one place.
Now I will try again.

EDIT:

I just added a:

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report.Dictionary.Variables["usrID"].Value = ident.UserId.ToString(CultureInfo.InvariantCulture);

...for the variables that are not requested by the user and now it works.

It seems that for some reason:

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report["usrID"] = ident.UserId;

..wasn't enough.