Error Can't find object MySqlDataConnection

Comments

• AlexTZ

  July 2012 edited 12:59PM

  Hello,
  
  You should register a connection in code, as described in the readme.txt file:
  
  3) register the dll programmatically
  - add the "FastReport.MySQL.dll" reference to your project;
  - execute the following code once at the application start:
  FastReport.Utils.RegisteredObjects.AddConnection(typeof(MySqlDataConnection));
  
• Paulo Freire S??o Paulo - Brasil

  July 2012 edited 12:59PM

  AlexTZ wrote: »

  Hello,
  
  You should register a connection in code, as described in the readme.txt file:
  
  3) register the dll programmatically
  - add the "FastReport.MySQL.dll" reference to your project;
  - execute the following code once at the application start:
  FastReport.Utils.RegisteredObjects.AddConnection(typeof(MySqlDataConnection));

  
  
  Thank you AlexTZ
• shahriar

  January 2025 edited January 2025

  Change <MySqlDataConnection>....</MySqlDataConnection> To <XmlDataConnection>....</XmlDataConnection> in the report <Dictionary>....</Dictionary> field.

  My report sample is :

   <Dictionary>

  <XmlDataConnection>

    <TableDataSource Name="EMPLOYEES" DataType="System.Int32" Enabled="true">

     <Column Name="ID" DataType="System.Decimal"/>

     <Column Name="FIRST_NAME" DataType="System.String"/>

     <Column Name="LAST_NAME" DataType="System.String"/>

     <Column Name="EMAIL" DataType="System.String"/>

    </TableDataSource>

    </XmlDataConnection>

   </Dictionary>
• stg

  11:23AM

  Hello!

  Thank you for the example! We have tested the <Dictionary> snippet provided in the latest version of FastReport.Core 2026.2.8:

  Why a bare <XmlDataConnection> tag without any attributes will not connect to the data on its own: when calling report.Prepare() without registering the data in the code, a DataTableException occurs: EMPLOYEES: Table is not connected to the data. Register the data using the Report.RegisterData method. For an <XmlDataConnection> without RegisterData, the Name and the path to the XML file (XmlFile / ConnectionString) must be specified in the .frx file.

  If you are passing data from the application via Report.RegisterData(...) (for example, a `DataTable` or `DataSet` named “EMPLOYEES”), the `<XmlDataConnection>` wrapper is not required at all; you can place the `<TableDataSource>` directly within the root `<Dictionary>`:

  <Dictionary>
    <TableDataSource Name="EMPLOYEES" DataType="System.Int32" Enabled="true">
      <Column Name="ID" DataType="System.Decimal"/>
      <Column Name="FIRST_NAME" DataType="System.String"/>
      <Column Name="LAST_NAME" DataType="System.String"/>
      <Column Name="EMAIL" DataType="System.String"/>
    </TableDataSource>
  </Dictionary>
  

  If the report still needs to work directly with MySQL (due to the initial error ‘Can’t find object MySqlDataConnection’), there is no need to change <MySqlDataConnection> to <XmlDataConnection>; simply install the FastReport.Data.MySql package and register the connector once at application start-up (before report.Load(...)):

  FastReport.Utils.RegisteredObjects.AddConnection(typeof(FastReport.Data.MySqlDataConnection));