LoadPrepared throws ArgumentOutOfRangeException

obulix · October 7

i have a very simple report created using FastReport .NET v 2024.2.0 community edition.

When i try to generate the below code it throws error at report.LoadPrepared method.

Exception details

System.AggregateException: 'One or more errors occurred. (startIndex cannot be larger than length of string. (Parameter 'startIndex'))'

ArgumentOutOfRangeException: startIndex cannot be larger than length of string. (Parameter 'startIndex')

Here is the code.

string epcdJsonString = File.ReadAllText(".\\ReportTemplate\\SampleJson.json");

RegisteredObjects.AddConnection(typeof(JsonDataConnection));

JsonDataSourceConnection jsonDataSourceConnection = new JsonDataSourceConnection();

jsonDataSourceConnection.ConnectionString = epcdJsonString;

jsonDataSourceConnection.CreateAllTables();

Report report = new Report();

report.LoadPrepared(".\\ReportTemplate\\TestReport.frx");

report.Dictionary.Connections.Add(jsonDataSourceConnection);

report.RegisterData(jsonDataSourceConnection.DataSet);

report.Prepare();

What am i missing here.. the json structure is same as what i have used in the designer.

Note : I am able to preview the report properly in the designer.

Plus Validate Report does not show any error.

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