Telerik report not working

Question

An error has occurred while processing Report \'ReportStandart\': Unable to establish a connection to the database. Please, verify that your connection string is valid. In case

Answer 1

In this sample, we have got sqlDataSource by filling connection string:

MyReport report = new MyReport();
string selectCommand = @"SELECT * FROM Sales.Store";
string connectionString = "Data Source=(local)\\SQLEXPRESS;Initial Catalog=AdventureWorks;Integrated Security=True";
Telerik.Reporting.SqlDataSource sqlDataSource = new Telerik.Reporting.SqlDataSource(connectionString, selectCommand);
report.DataSource = sqlDataSource;

In my case, my start-up project has connection string in its config file so I cannot use the connection string again in another project because of this error:

an error has occurred while processing table 'crosstab 1' ... format of the initialization string does not conform to specification starting at index 0

This error is because of having 1 more connection string.

Maybe this discussion on the Telerik site entitled Set CrossTab DataSource in code-behind will help.

Answer 2

• Go to the folder where your report project is.
• Open the folder and look for the file "Telerik.ReportDesigner.exe.config"
• Open the file in Visual Studio and copy the connection string
• Past the above connection string to your web.config

You can find the above here towards the end of the video (3':15'')