Problem after Upgrade to 10.2.16.914

[Otto Neff]

Hi,

just used the Upgrade Wizard in VS and upgraded to 10.2.16.914 from previous release Version.

Now the reports are broken. Maybe someone can help.

The Textbox.Value applied Text is not rendered anymore on NeedDatasource Event, see attached screenshots.

Kind regards.

[Otto Neff]

After using Upgrade Wizard with Version 10.1.16.504,
Reports, same code, working again.

Something changed on lifecycle? 

[Stef]

Hi,

An important change as of R3 2016 is that any changes of the report definition or its items in events will not be applied. In events you can access and modify only the processing elements -  Understanding events . In previous versions changes were propagated, but the result was unpredictable due to the relation to the order of processing of inner elements of the report.

To illustrate:​

• Invalid:
  

  private void textBox1_ItemDataBinding(object sender, EventArgs e)
  {
   //the change will not be applied
    this.textBox1.Value="test";
  }

• Valid:
  

  private void textBox1_ItemDataBinding(object sender, EventArgs e)
  {
      //the change will be applied on the current processing element, not all processing elements originating from this.textBox1 definition
      Telerik.Reporting.Processing.TextBox txt = (Telerik.Reporting.Processing.TextBox)sender;
       txt.Value="test";
  }

• Recommended:
  

  //code from the report's designer.cs file
  this.textBox1.Value="=MyFunction(Fields.X)";
  
  //user function - http://docs.telerik.com/reporting/expressions-user-functions
  public static string MyFunction(int paramX)
  {
      return String.Format("{0} position", paramX);
  }

Let us know if you need further help.

Regards,
Stef
Telerik by Progress

[Otto Neff]

This helps a lot! Thanks for the pretty clear answer.