Class Column

This class represents a single data column in a DataSourceBase.

Inheritance

System.Object

Base

DataComponentBase

Column

DataSourceBase

Implements

IFRSerializable

IParent

Inherited Members

DataComponentBase.Alias

DataComponentBase.Enabled

DataComponentBase.ReferenceName

DataComponentBase.Reference

DataComponentBase.IsAliased

DataComponentBase.Assign(Base)

DataComponentBase.InitializeComponent()

Base.Name

Base.Restrictions

Base.Flags

Base.Parent

Base.BaseName

Base.ClassName

Base.Report

Base.Page

Base.ChildObjects

Base.AllObjects

Base.ZOrder

Base.IsAncestor

Base.IsDesigning

Base.IsPrinting

Base.IsRunning

Base.OriginalComponent

Base.SetProp(Base, Base)

Base.FloatDiff(Single, Single)

Base.DeserializeSubItems(FRReader)

Base.ExtractDefaultMacros(String)

Base.Dispose(Boolean)

Base.SetFlags(Flags, Boolean)

Base.SetReport(Report)

Base.SetParent(Base)

Base.SetParentCore(Base)

Base.FindObject(String)

Base.CreateUniqueName()

Base.Clear()

Base.Deserialize(FRReader)

Base.BaseAssign(Base)

Base.AssignAll(Base)

Base.HasParent(Base)

Base.HasFlag(Flags)

Base.HasRestriction(Restrictions)

Base.InvokeEvent(String, Object)

Base.OnAfterLoad()

Base.GetCustomScript()

Base.ExtractMacros()

Base.IsHaveToConvert(Object)

Base.GetConvertedObjects()

Base.ForEachAllConvectedObjects(Object)

Namespace: FastReport.Data

Assembly: FastReport.OpenSource.dll

Syntax

public class Column : DataComponentBase, IFRSerializable, IParent

Constructors

Column()

Initializes a new instance of the Column class with default settings.

Declaration

public Column()

Properties

BindableControl

Gets or sets a value that specifies the type of a control that will be created when you drop this column on a report page.

Declaration

public ColumnBindableControl BindableControl { get; set; }

Property Value

Type	Description
ColumnBindableControl

Remarks

If you need to specify the custom type, use the CustomBindableControl property instead.

Calculated

Gets or sets a value that indicates whether this column is calculated.

Declaration

public bool Calculated { get; set; }

Property Value

Type	Description
System.Boolean

Remarks

You should specify the Expression property for calculated columns.

Columns

Gets the collection of child columns.

Declaration

public ColumnCollection Columns { get; }

Property Value

Type	Description
ColumnCollection

CustomBindableControl

Gets or sets a name of custom bindable control.

Declaration

public string CustomBindableControl { get; set; }

Property Value

Type	Description
System.String

Remarks

Use this property if you want to bind a column to custom object type. You need to specify the type name of your object; that object must be registered in FastReport using the RegisteredObjects.Add method.

DataType

Gets or sets the type of data supplied by this column.

Declaration

public Type DataType { get; set; }

Property Value

Type	Description
System.Type

Expression

Gets or sets expression of the calculated column.

Declaration

public string Expression { get; set; }

Property Value

Type	Description
System.String

Remarks

This property is used if the Calculated property is true.

Format

Gets or sets the format of this column.

Declaration

public ColumnFormat Format { get; set; }

Property Value

Type	Description
ColumnFormat

Remarks

This property is used when you drag a column from the Data window to the report page. FastReport will create a "Text" object and set its "Format" property to the corresponding format. By default, this property is set to Auto. It means that the format will be determined automatically depending on the DataType property.

PropDescriptor

Gets or sets the business object property descriptor which this column is bound to.

Declaration

public PropertyDescriptor PropDescriptor { get; set; }

Property Value

Type	Description
PropertyDescriptor

PropName

Gets or sets the business object property name which this column is bound to.

Declaration

public string PropName { get; set; }

Property Value

Type	Description
System.String

Methods

AddChild(Base)

Adds a child object to this object's childs.

Declaration

public virtual void AddChild(Base child)

Parameters

Type	Name	Description
Base	child	Object to add.

CanContain(Base)

Gets a value indicating that this object can contain the specified child object.

Declaration

public virtual bool CanContain(Base child)

Parameters

Type	Name	Description
Base	child	Child object.

Returns

Type	Description
System.Boolean	true if this object can contain the specified child object; otherwise, false.

GetChildObjects(ObjectCollection)

Gets a list of child objects.

Declaration

public virtual void GetChildObjects(ObjectCollection list)

Parameters

Type	Name	Description
ObjectCollection	list	List to fill with values.

GetChildOrder(Base)

Returns z-order of the specified child object.

Declaration

public int GetChildOrder(Base child)

Parameters

Type	Name	Description
Base	child	Child object.

Returns

Type	Description
System.Int32	Z-order of the specified object.

Remarks

This method must return the index of a specified child object in the internal child list.

GetExpressions()

Gets all expressions contained in the object.

Declaration

public override string[] GetExpressions()

Returns

Type	Description
System.String[]	Array of expressions or null if object contains no expressions.

Overrides

Base.GetExpressions()

Remarks

Do not call this method directly. You may override it if you are developing a new component for FastReport.

This method is called by FastReport each time before run a report. FastReport do this to collect all expressions and compile them. For example, GetExpressions method of the TextObject class parses the text and returns all expressions found in the text.

RemoveChild(Base)

Removes a specified object from this object's childs.

Declaration

public virtual void RemoveChild(Base child)

Parameters

Type	Name	Description
Base	child

Serialize(FRWriter)

Serializes the object.

Declaration

public override void Serialize(FRWriter writer)

Parameters

Type	Name	Description
FRWriter	writer	Writer object.

Overrides

DataComponentBase.Serialize(FRWriter)

Remarks

Do not call this method directly. You should override it if you are developing a new component for FastReport.

This method is called when the object needs to save the state. It may happen when:

saving the report to the file or stream;
saving the report to the designer's undo buffer;
assigning the object to another object using the Assign(Base) or AssignAll(Base) methods;
saving the object to the designer's clipboard;
saving the object to the preview (when run a report).

SetChildOrder(Base, Int32)

Sets the z-order of the specified object.

Declaration

public void SetChildOrder(Base child, int order)

Parameters

Type	Name	Description
Base	child	Child object.
System.Int32	order	New Z-order.

Remarks

This method must place the specified child object at the specified position in the internal child list.

SetName(String)

Sets the object's name.

Declaration

public override void SetName(string value)

Parameters

Type	Name	Description
System.String	value	New name.

Overrides

DataComponentBase.SetName(String)

Remarks

This method is for internal use only. It just sets a new name without any checks (unlike the Name property setter).

UpdateLayout(Single, Single)

Updates the children layout when the size of this object is changed by dx, dy values.

Declaration

public void UpdateLayout(float dx, float dy)

Parameters

Type	Name	Description
System.Single	dx	X delta.
System.Single	dy	Y delta.

Remarks

This method must update positions/sizes of child objects whose Dock or Anchor properties are set to non-default values.

Implements

IFRSerializable

IParent