ParameterPanelFluentBuilder Class

Contains methods that allow you to customize the Parameters panel.

Namespace: DevExpress.XtraReports.Parameters

Assembly: DevExpress.XtraReports.v21.2.dll

NuGet Package: DevExpress.Reporting.Core

Declaration

C#

public class ParameterPanelFluentBuilder :
    ParameterPanelFluentBuilderBase

VB.NET

Public Class ParameterPanelFluentBuilder
    Inherits ParameterPanelFluentBuilderBase

Related API Members

The following members return ParameterPanelFluentBuilder objects:

• ParameterPanelFluentBuilder.Begin(XtraReport)

Remarks

You can unite report parameters into expandable groups, place parameters side-by-side, add separators, and more.

Default panel	Customized panel

View Example: Reporting for WinForms - Customize the Parameters Panel View Example: Reporting for ASP.NET Core - Customize the Parameters Panel

Use the ParameterPanelFluentBuilder class as follows:

1. Call the static Begin method and pass a report instance as a parameter.
2. Call methods that customize the panel.
3. Call the End method.

C#

using DevExpress.XtraReports.Parameters;
// ...
ParameterPanelFluentBuilder.Begin(report)
// Customize the panel
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
ParameterPanelFluentBuilder.Begin(report). ' Customize the panel
End()

Customize the “Parameters” Panel

A customized Parameters panel contains items of the following types:

Parameter item

Customizes a report parameter.

Group item

Creates and customizes a parameter group.

Separator item

Adds a separator between groups and parameters.

There are two ways to create a new item:

1. Call an item’s Begin method, customize the item, and call the item’s End method.

   C#

   ParameterPanelFluentBuilder.Begin(report)
       .BeginGroupItem()
           .WithTitle("Select a customer")
           .BeginParameterItem(report.Parameters[0])
               .WithLabelOrientation(Orientation.Vertical)
           .EndParameterItem()
       .EndGroupItem()
   .End();
   

   VB.NET

   ParameterPanelFluentBuilder.Begin(report).
       BeginGroupItem().
           WithTitle("Select a customer").
           BeginParameterItem(report.Parameters(0)).
               WithLabelOrientation(Orientation.Vertical).
           EndParameterItem().
       EndGroupItem().
   End()
   

2. Call an item’s AddItem method and pass a customization action as a parameter.

   C#

   ParameterPanelFluentBuilder.Begin(report)
       .AddGroupItem(g => g
           .WithTitle("Select a customer")
           .AddParameterItem(report.Parameters[0], p0 => p0
               .WithLabelOrientation(Orientation.Vertical)))
   .End();
   

   VB.NET

   ParameterPanelFluentBuilder.Begin(report).
       AddGroupItem(Function(g) g.
           WithTitle("Select a customer").
           AddParameterItem(report.Parameters(0), Function(p0) p0.
               WithLabelOrientation(Orientation.Vertical))).
   End()
   

These ways have the same customization capabilities and differ only in syntax. In the following sections, we describe the second way in detail. For more examples on how to use the first way, refer to the description of the Begin/End methods:

• BeginParameterItem overloads/EndParameterItem
• BeginGroupItem/EndGroupItem
• BeginSeparatorItem/EndSeparatorItem

Customize a Parameter

1. Call the AddParameterItem method. This method accepts a report parameter or its name.
2. Optional. Implement a customization action and pass this action to the AddParameterItem method as a second argument. The example below uses the WithLabelOrientation method to position the text label above the parameter editor.

C#

using DevExpress.XtraReports.Parameters;
// ...
using Orientation = DevExpress.XtraReports.Parameters.Orientation;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .AddParameterItem(report.Parameters[0], p => p
        .WithLabelOrientation(Orientation.Vertical))
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
Imports Orientation = DevExpress.XtraReports.Parameters.Orientation
' ...
ParameterPanelFluentBuilder.Begin(report).
    AddParameterItem(report.Parameters(0), Function(p) p.
        WithLabelOrientation(Orientation.Vertical)).
End()

orientation = Horizontal (Default)	orientation = Vertical

Call the AddParameterItem method only for those report parameters that you want to customize. The Parameters panel displays the remaining parameters at the end (with default settings).

Create and Customize a Group

Call the AddGroupItem method and implement a customization action. In this action, customize group appearance, add parameters, groups, and separators.

C#

using DevExpress.XtraReports.Parameters;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .AddParameterItem(report.Parameters[0])
    .AddGroupItem(g => g
        .WithTitle("Select a customer")
        .AddParameterItem(report.Parameters[1])
        .AddParameterItem(report.Parameters[2]))
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
ParameterPanelFluentBuilder.Begin(report).
    AddParameterItem(report.Parameters(0)).
    AddGroupItem(Function(g) g.
        WithTitle("Select a customer").
        AddParameterItem(report.Parameters(1)).
        AddParameterItem(report.Parameters(2))).
End()

Default panel	Panel with a group

The example above uses the WithTitle method to specify a group title. You can also use the following methods to configure a group:

• WithTitleVisible(bool titleVisible)

  titleVisible = true (Default)	titleVisible = false

• WithOrientation(Orientation orientation) - specifies whether group parameters should be located vertically or horizontally.

  orientation = Vertical (Default)	orientation = Horizontal

• WithBorderVisible(bool borderVisible)

  borderVisible = true (Default)	borderVisible = false

• WithShowExpandButton(bool showExpandButton)

  showExpandButton = false (Default)	showExpandButton = true

• WithExpanded(bool expanded)

  expanded = true (Default)	expanded = false

Add a Separator

Call the AddSeparatorItem method to add a separator between parameters or groups.

C#

using DevExpress.XtraReports.Parameters;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .AddParameterItem(report.Parameters[0])
    .AddSeparatorItem()
    .AddParameterItem(report.Parameters[1])
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
ParameterPanelFluentBuilder.Begin(report).
    AddParameterItem(report.Parameters(0)).
    AddSeparatorItem().
    AddParameterItem(report.Parameters(1)).
End()

Default panel	Panel with a separator between parameters

Modify a Customized Panel

You can reconfigure items of a customized panel or remove some or all items to discard customization.

The following example removes a parameter and separator from a group and changes the label orientation of another parameter from the same group.

C#

using DevExpress.XtraReports.Parameters;
// ...
using Orientation = DevExpress.XtraReports.Parameters.Orientation;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .GetGroupItem(0)
        .RemoveParameterItem(report.Parameters[0])
        .RemoveSeparatorItem(0)
        .GetParameterItem(report.Parameters[1], p1 => p1
            .WithLabelOrientation(Orientation.Horizontal))
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
Imports Orientation = DevExpress.XtraReports.Parameters.Orientation
' ...
ParameterPanelFluentBuilder.Begin(report).
    GetGroupItem(0).
        RemoveParameterItem(report.Parameters(0)).
        RemoveSeparatorItem(0).
        GetParameterItem(report.Parameters(1), Function(p1) p1.
            WithLabelOrientation(Orientation.Horizontal)).
End()

Initial panel	Modified panel

Refer to the descriptions of the following methods for more information:

• GetGroupItem overloads
• GetParameterItem overloads
• RemoveGroupItem overloads
• RemoveParameterItem overloads
• RemoveSeparatorItem
• ClearItems

Examples

Place Parameters Side-by-Side and Unite Them into Groups

C#

using DevExpress.XtraReports.Parameters;
// ...
using Orientation = DevExpress.XtraReports.Parameters.Orientation;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .AddGroupItem(g0 => g0
        .WithTitle("Select dates")
        .AddParameterItem(report.Parameters[0], p0 => p0
            .WithLabelOrientation(Orientation.Vertical)))
    .AddGroupItem(g1 => g1
        .WithTitle("Select a customer")
        .WithOrientation(Orientation.Horizontal)
        .WithShowExpandButton(true)
        .AddParameterItem(report.Parameters[1], p1 => p1
            .WithLabelOrientation(Orientation.Vertical))
        .AddSeparatorItem()
        .AddParameterItem(report.Parameters[2], p2 => p2
            .WithLabelOrientation(Orientation.Vertical)))
.End();

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
Imports Orientation = DevExpress.XtraReports.Parameters.Orientation
' ...
ParameterPanelFluentBuilder.Begin(report).
    AddGroupItem(Function(g0) g0.
        WithTitle("Select dates").
        AddParameterItem(report.Parameters(0), Function(p0) p0.
            WithLabelOrientation(Orientation.Vertical))).
    AddGroupItem(Function(g1) g1.
        WithTitle("Select a customer").
        WithOrientation(Orientation.Horizontal).
        WithShowExpandButton(True).
        AddParameterItem(report.Parameters(1), Function(p1) p1.
            WithLabelOrientation(Orientation.Vertical)).
        AddSeparatorItem().
        AddParameterItem(report.Parameters(2), Function(p2) p2.
            WithLabelOrientation(Orientation.Vertical))).
End()

Default panel	Customized panel

Enable/Disable a Parameter Editor Based on a Value of Another Parameter

The following example specifies an expression for a parameter’s Enabled property to enable/disable the parameter’s editor based on a value of another parameter.

C#

using DevExpress.XtraReports.Parameters;
// ...
using DevExpress.XtraReports.Expressions;
// ...
ParameterPanelFluentBuilder.Begin(report)
    .AddGroupItem(g0 => g0
        .WithTitle("Select dates")
        .AddParameterItem(report.Parameters[0]))
    .AddGroupItem(g1 => g1
        .WithTitle("Select a customer")
        .AddParameterItem(report.Parameters[1])
        .AddParameterItem(report.Parameters[2]))
.End();

report.Parameters["customer"].ExpressionBindings.Add(
    new BasicExpressionBinding() {
        PropertyName = "Enabled",
        Expression = "!IsNullOrEmpty(?company)",
});

VB.NET

Imports DevExpress.XtraReports.Parameters
' ...
Imports DevExpress.XtraReports.Expressions
' ...
ParameterPanelFluentBuilder.Begin(report).
    AddGroupItem(Function(g0) g0.
        WithTitle("Select dates").
        AddParameterItem(report.Parameters(0))).
    AddGroupItem(Function(g1) g1.
        WithTitle("Select a customer").
        AddParameterItem(report.Parameters(1)).
        AddParameterItem(report.Parameters(2))).
End()

report.Parameters("customer").ExpressionBindings.Add(
    New BasicExpressionBinding() With {
        .PropertyName = "Enabled",
        .Expression = "!IsNullOrEmpty(?company)"
})

You can specify the same expression for the parameter’s Visible property to show/hide the parameter’s editor.

Inheritance

Object

GroupItemFluentBuilder

ParameterPanelFluentBuilderBase

ParameterPanelFluentBuilder