[DefaultValue("")]
[XRLocalizable(true)]
public string Description { get; set; }

<DefaultValue("")>
<XRLocalizable(True)>
Public Property Description As String

using System.Drawing;
using DevExpress.XtraReports.UI;
// ...
using DevExpress.XtraReports.Parameters;
// ...
using DevExpress.XtraReports.Expressions;
// ...
// Create a date report parameter.
// Use an expression to specify the parameter's default value.
var dateParameter = new Parameter() {
    Name = "date",
    Description = "Date:",
    Type = typeof(System.DateTime),
    ExpressionBindings = { new BasicExpressionBinding("Value", "Now()") }
};

// Create a label and bind the label's Text property to the parameter value.
// Use the parameter's name to reference the parameter in the label's expression.
var dateLabel = new XRLabel() {
    ExpressionBindings = { new ExpressionBinding("Text", "?date") },
    BoundsF = new RectangleF(0, 0, 200, 50),
};

// Create a report and add the label to the report's Detail band.
var report = new XtraReport() {
    Bands = { new DetailBand() { Controls = { dateLabel } } },
};

// Add the parameter to the report's Parameters collection.
report.Parameters.Add(dateParameter);

Imports DevExpress.XtraReports.UI
' ...
Imports DevExpress.XtraReports.Parameters
' ...
Imports DevExpress.XtraReports.Expressions
' ...
' Create a date report parameter.
' Use an expression to specify the parameter's default value.
Dim dateParameter = New Parameter() With {
    .Name = "date",
    .Description = "Date:",
    .Type = GetType(Date)
}

dateParameter.ExpressionBindings.Add(New BasicExpressionBinding("Value", "Now()"))

' Create a label and bind the label's Text property to the parameter value.
' Use the parameter's name to reference the parameter in the label's expression.
Dim dateLabel = New XRLabel() With {.BoundsF = New RectangleF(0, 0, 200, 50)}

dateLabel.ExpressionBindings.Add(New ExpressionBinding("Text", "?date"))

' Create a report and add the label to the report's Detail band.
Dim report = New XtraReport()
Dim band = New DetailBand()
band.Controls.Add(dateLabel)
report.Bands.Add(band)

' Add the parameter to the report's Parameters collection.
report.Parameters.Add(dateParameter)
'

dateRangeParam.Name = "dateRange";
dateRangeParam.Description = "Date Range:";
dateRangeParam.Type = typeof(System.DateTime);

parameter1.MultiValue = true;
parameter1.Description = "Categories: ";

param1.Value = 1;
param1.Description = "Category: ";
param1.Visible = true;

param.Name = "employeePosition";
param.Description = "Employee position:";
param.Type = typeof(string);

dateRangeParam.Name = "dateRange"
dateRangeParam.Description = "Date Range:"
dateRangeParam.Type = GetType(Date)

dateParameter.Name = "dateParameter"
dateParameter.Description = "Date:"
dateParameter.Type = GetType(Date)

param1.Value = 1
param1.Description = "Category: "
param1.Visible = True

param.Name = "employeePosition"
param.Description = "Employee position:"
param.Type = GetType(String)