Public Property ConnectionString As System.String

public System.string ConnectionString {get; set;}

Private void rpt_ReportStart(object sender, System.EventArgs eArgs)
{
    ((GrapeCity.ActiveReports.Data.OleDBDataSource)(this.DataSource)).ConnectionString = @"Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=AdventureWorks2000;Data Source=TESTING";
    ((GrapeCity.ActiveReports.Data.OleDBDataSource)(this.DataSource)).CommandTimeout = 30;
    System.IO.StringReader sr = new System.IO.StringReader(new System.IO.StreamReader("..\\..\\sqlString.txt").ReadToEnd());
    ((GrapeCity.ActiveReports.Data.OleDBDataSource)(this.DataSource)).SQL = sr.ReadToEnd();
    sr.Close();
}

Private Sub rpt_ReportStart(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.ReportStart
    CType(Me.DataSource, GrapeCity.ActiveReports.Data.OleDBDataSource).CommandTimeout = 30
    CType(Me.DataSource, GrapeCity.ActiveReports.Data.OleDBDataSource).ConnectionString = "Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=AdventureWorks2000;Data Source=TESTING"
    Dim sr As New System.IO.StringReader(New System.IO.StreamReader("..\\..\\sqlString.txt").ReadToEnd())
    CType(Me.DataSource, GrapeCity.ActiveReports.Data.OleDBDataSource).SQL = sr.ReadToEnd
End Sub