using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Collections;

using CrystalDecisions.Shared;

namespace WindowsApplication1

{
public partial class Form1 : Form

{
private const string PARAMETER_FIELD_NAME = "City";

public Form1()

{
InitializeComponent();
}
private void ConfigureCrystalReports()

{
string reportPath = Application.StartupPath + "\\" + "CustomersByCity.rpt";

ArrayList arrayList = new ArrayList();

arrayList.Add("Paris");

arrayList.Add("Tokyo");

ParameterFields parameterFields = crystalReportViewer1.ParameterFieldInfo;

SetCurrentValuesForParameterField(parameterFields, arrayList);
}
private void Form1_Load(object sender, EventArgs e)

{
ConfigureCrystalReports();
}
private void SetCurrentValuesForParameterField(ParameterFields parameterFields, ArrayList arrayList)

{
ParameterValues currentParameterValues = new ParameterValues();

foreach (object submittedValue in arrayList)

{
ParameterDiscreteValue parameterDiscreteValue = new ParameterDiscreteValue();

parameterDiscreteValue.Value = submittedValue.ToString();
currentParameterValues.Add(parameterDiscreteValue);
}
ParameterField parameterField = parameterFields[PARAMETER_FIELD_NAME];

parameterField.CurrentValues = currentParameterValues;
}
}
}

 

Why does this happen? I was doing a tutorial from MSDN and I think the book code samples are similar to this, as well, yet I get that null. How do I fix this?

Thanks!