ActiveReports 12
Key Property (Parameter)
Example 

GrapeCity.ActiveReports.v12 Assembly > GrapeCity.ActiveReports.SectionReportModel Namespace > Parameter Class : Key Property
Unique name of the parameter.
Syntax
'Declaration
 
Public Property Key As String
public string Key {get; set;}

Property Value

A string value that represents the unique name of the parameter.
Remarks
Used to reference the parameter in the parameters collection and to locate the different placeholder locations in the SQL query where the parameter value will be inserted.
Example
private void SectionReport1_ReportStart(object sender, System.EventArgs eArgs)
{
    this.Parameters[0].DefaultValue = "Germany";
    this.Parameters[0].Key = "country";
    this.Parameters[0].Prompt = "Country: ";
    this.Parameters[0].Tag = "some extra data";
    this.Parameters[0].Type = GrapeCity.ActiveReports.SectionReportModel.Parameter.DataType.String;
}
Private Sub SectionReport1_ReportStart(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.ReportStart
    Me.Parameters(0).DefaultValue = "Germany"
    Me.Parameters(0).Key = "country"
    Me.Parameters(0).Prompt = "Country: "
    Me.Parameters(0).Tag = "Some extra data"
    Me.Parameters(0).Type = GrapeCity.ActiveReports.SectionReportModel.Parameter.DataType.String
End Sub
See Also

Reference

Parameter Class
Parameter Members