Hi Dimitris,

This exception may have been thrown if you are trying to access a non-existent resx file. Is it possible that you copy-pasted the code from the samples, but did not replace the references to our resx files with your own strings?

Regards,

Yes I want to open the file from my local disk. And I open it following the example (dialog Open) :

OpenFileDialog openFileDialog = new OpenFileDialog();

            bool? showDialog = openFileDialog.ShowDialog();

            if (showDialog == true)

            {

                Stream stream = openFileDialog.File.OpenRead();

                FlatDataSource dataSource = CreateDataSource(stream);

                this.pivotGrid.DataSource = dataSource;

                this.dataSelector.DataSource = dataSource;

                stream.Close();

            }

then at             ExcelDataConnectionSettings excelDataSettings = new ExcelDataConnectionSettings { FileStream = fileStream, GeneratedTypeName = PivotGridStrings.XPG_ExcelFileDataSource_InitialCube, WorksheetName = PivotGridStrings.XPG_ExcelFileDataSource_WorksheetName };

Name = '((System.IO.FileStream)(fileStream)).Name' threw an exception of type 'System.Security.SecurityException'