This question is locked. New answers and comments are not allowed.
Hi guys, I'm very new user of Telerik components and I'm reading Open Access Tutorial and I have some questions, I develop solucition describe in item 4.4 - Telerik Reporting Example, but when I try to get a Preview of the report I receive the error message: ]
An error has ocurred while processing Report ":
The 'openaccess' section cannot be found in the application's configuration file.
But this sectino existes in App.config file like bellow:
<openaccess xmlns="http://www.telerik.com/OpenAccess">
<references>
<reference assemblyname="Model" configrequired="True" />
</references>
<connections>
<connection id="NorthwindConnection">
<databasename>NorthwindOA</databasename>
<servername>(LOCAL)\SQLEXPRESS2005</servername>
<integratedSecurity>False</integratedSecurity>
<user>sa</user>
<password>123</password>
<backendconfigurationname>mssqlConfiguration</backendconfigurationname>
</connection>
</connections>
<backendconfigurations>
<backendconfiguration id="mssqlConfiguration" backend="mssql">
<mappingname>mssqlMapping</mappingname>
</backendconfiguration>
</backendconfigurations>
<mappings current="mssqlMapping">
<mapping id="mssqlMapping" />
</mappings>
</openaccess>
So I try to open the exemple made by Telerik but Visual Studio 2008 can't preview the Report and give me message:
To prevent possible data loss before loading the designer, the following erros must be solved:
Value cannot be null. Parameter name: instance
Can anyone help me?
An error has ocurred while processing Report ":
The 'openaccess' section cannot be found in the application's configuration file.
But this sectino existes in App.config file like bellow:
<openaccess xmlns="http://www.telerik.com/OpenAccess">
<references>
<reference assemblyname="Model" configrequired="True" />
</references>
<connections>
<connection id="NorthwindConnection">
<databasename>NorthwindOA</databasename>
<servername>(LOCAL)\SQLEXPRESS2005</servername>
<integratedSecurity>False</integratedSecurity>
<user>sa</user>
<password>123</password>
<backendconfigurationname>mssqlConfiguration</backendconfigurationname>
</connection>
</connections>
<backendconfigurations>
<backendconfiguration id="mssqlConfiguration" backend="mssql">
<mappingname>mssqlMapping</mappingname>
</backendconfiguration>
</backendconfigurations>
<mappings current="mssqlMapping">
<mapping id="mssqlMapping" />
</mappings>
</openaccess>
So I try to open the exemple made by Telerik but Visual Studio 2008 can't preview the Report and give me message:
To prevent possible data loss before loading the designer, the following erros must be solved:
Value cannot be null. Parameter name: instance
Can anyone help me?