MultiEditorRowPropertiesCollection.Add() Method

Creates and adds a new row item to the collection.

Namespace: DevExpress.XtraVerticalGrid.Rows

Assembly: DevExpress.XtraVerticalGrid.v19.2.dll

Declaration

C#

public MultiEditorRowProperties Add()

VB.NET

Public Function Add As MultiEditorRowProperties

Returns

Type	Description
MultiEditorRowProperties	A MultiEditorRowProperties object representing the newly created row item.

Remarks

The Add method creates a new row item and adds it to the end of the multi-editor row’s MultiEditorRow.PropertiesCollection collection. This method’s return value represents the newly created MultiEditorRowProperties object.

To add an array of existing row items to the collection, use the MultiEditorRowPropertiesCollection.AddRange method. To remove a row item from the collection, use the MultiEditorRowPropertiesCollection.Remove or MultiEditorRowPropertiesCollection.RemoveAt methods. You can also call the MultiEditorRowPropertiesCollection.Clear method to remove all row items from the collection.

Example

The following sample code demonstrates how to create a custom row that extends the multi editor’s functionality. An additional, user-defined row property is introduced for this purpose.

Two classes are declared. The MyMultiEditorRow class derives from the MultiEditorRow class and represents a custom row. Row items for this row are represented by the MyMultiEditorRowProperties class that is derived from the MultiEditorRowProperties class. It introduces the MyProperty property that simply holds a string value. Changing the MyProperty property raises the VGridControlBase.RowChanging event.

C#

using DevExpress.XtraVerticalGrid;
using DevExpress.XtraVerticalGrid.Rows;

// ...
MyMultiEditorRow newMultiEditorRow = new MyMultiEditorRow();
MyMultiEditorRowProperties rowItem = 
  newMultiEditorRow.PropertiesCollection.Add() as MyMultiEditorRowProperties;
vGridControl1.Rows.Add(newMultiEditorRow);

// ...
public class MyMultiEditorRowProperties : MultiEditorRowProperties {
   string myProperty;

   public MyMultiEditorRowProperties() : this(string.Empty) {}
   public MyMultiEditorRowProperties(string fieldName) : base(fieldName) {
      this.myProperty = string.Empty;
   }

   public string MyProperty {
      get { return myProperty; }
      set {
         RowPropertiesChangingArgs args = new RowPropertiesChangingArgs(
           RowChangeTypeEnum.UserProperty1, value, MyProperty);
         if(CanChange(args)) {
            myProperty = (string)args._value;
            Changed(RowChangeTypeEnum.UserProperty1);
         }
      }
   }
}


public class MyMultiEditorRow : MultiEditorRow {
   protected override RowProperties CreateRowProperties() {
      return new MyMultiEditorRowProperties();
   }

}

VB.NET

Imports DevExpress.XtraVerticalGrid
Imports DevExpress.XtraVerticalGrid.Rows

' ...
Dim newMultiEditorRow As MyMultiEditorRow = New MyMultiEditorRow()
Dim rowItem As MyMultiEditorRowProperties = newMultiEditorRow.PropertiesCollection.Add()
VGridControl1.Rows.Add(newMultiEditorRow)

' ...
public class MyMultiEditorRowProperties 
   Inherits MultiEditorRowProperties
   Dim _myProperty As String

   Public Sub New()
      MyClass.New(String.Empty)
   End Sub

   Public Sub New(ByVal fieldName As String)
      Me._myProperty = String.Empty
   End Sub

   Public Property MyProperty() As String
      Get
         Return _myProperty
      End Get
      Set(ByVal Value As String)
         Dim args As RowPropertiesChangingArgs = New RowPropertiesChangingArgs( _
           RowChangeTypeEnum.UserProperty1, Value, MyProperty)
         If (CanChange(args)) Then
            _myProperty = CType(args._value, String)
            Changed(RowChangeTypeEnum.UserProperty1)
         End If
      End Set
   End Property
End Class

Public Class MyMultiEditorRow
   Inherits MultiEditorRow
   Protected Overrides Function CreateRowProperties() As RowProperties
      Return New MyMultiEditorRowProperties()
   End Function
End Class