FlexReport lets you load reports in Visual Studio or end-user Report Designers. You can load .flxr files, both at design time and run time using Load method of the C1FlexReport class.

The Load method provides various overloads for loading the reports as listed below.

Lets explore how to use the Load method to load reports at design time and run time in the following sections.

Load FlexReport at Design Time

Following are the steps to load these files via designer:

1. Add the FlexReport component for from the Toolbox onto the form.
2. Right-click the FlexReport component and select the Load Report menu option to load report definitions. (You can also click the smart tag () above the component to open the C1FlexReport Tasks menu and choose the Load Report option.)
   The Load Report dialog box appears, which allows you to select a report definition file and then a report within that file.
   To load a report, click the ellipsis button to select the report definition file you created in Step 1, then select the report from the drop-down list and click OK. The Load Report dialog box shows the name of the report you selected and a count of groups, sections, and fields. This is what the dialog box looks like:
      
3. Add the FlexViewer control to the form. Also, add a control that will allow the user to fetch the report (this could be a button, menu, a list box, or a group of buttons).
4. Add code to render the report selected by the user. For example, if you added a button in the previous step with the name btnProductsReport, the code would look like this:
      

   C#	Copy Code
   private void btnProductsReport_Click(object sender, EventArgs e) { //load report definition c1FlexReport1.Load(@"..\..\ProductsReport.flxr", "Products Report"); //preview the report c1FlexViewer1.DocumentSource = c1FlexReport1; }

   The output looks like the snapshot below:
          

Load FlexReport at Run Time

Loading reports at run time requires a report definition file and viewer. The main advantage of this type of application is that if you modify the report format, there's no need to update the application. Simply send the new report definition file to the users and you are done.

To load reports at run time using the Load method, follow these steps:

1. Create all the required reports in the C1FlexReportDesigner application. For more information, see FlexReportDesigner.
2. Add the following controls to the application:
   • C1FlexReport component named c1FlexReport1
   • C1FlexViewer control named fv
   • ComboBox control named cmbReport
   • Button control named button1
3. Add the following code in the button click event to read the report definition file and build a list of all reports:
          
   • C#

   • C#

   // get application path       
   string appPath;
   appPath = Path.GetDirectoryName(Application.ExecutablePath).ToLower();
   int i = appPath.IndexOf("\bin");
   if ((i < 0)) { i = appPath.IndexOf("\bin"); }
   if ((i > 0)) { appPath = appPath.Remove(i, appPath.Length - i); }
   // get names of reports in the report definition file      
   m_ReportDefinitionFile = appPath + @"\Data\Products Report.flxr";
   string[] reports = C1FlexReport.GetReportList(m_ReportDefinitionFile);
   // populate combo box       
   cmbReport.Items.Clear();
   
   foreach (string report in reports)
   {
       cmbReport.Items.Add(report);
   }
   

   The code starts by getting the location of the file that contains the report definitions. This is done using static methods in the system-defined Path and Application classes. You may have to adjust the code to reflect the location and name of your report definition file.

   Then it uses the GetReportList method to retrieve an array containing the names of all reports in the report definition file (created in step 1), and populates the combo box allowing users to select the report.

4. Add code in the SelectedIndexChanged event of the ComboBox control to render the report selected by the user. For example:
   
   • C#

   • C#

   private void cmbReport_SelectedIndexChanged(object sender, EventArgs e)
   {           
       try
       {
           Cursor = Cursors.WaitCursor;
           // load report        
           fv.StatusText = "Loading" + cmbReport.Text;
           c1FlexReport1.Load(m_ReportDefinitionFile, cmbReport.Text);
           // render into print preview control        
           fv.StatusText = "Rendering" + cmbReport.Text;
           fv.DocumentSource = c1FlexReport1;
           // give focus to print preview control 
           fv.Focus();
       }
       finally
       {
           Cursor = Cursors.Default;
       }            
   }
   

5. Run the project.