The GetConvertToFormats() method should return a collection of the supported formats to convert to, so the control can accept or prevent the drop when the dragged object cannot be converted to the required format. You will need to check if the format is the desired one as well as if the needed data is present. The DataConverter can convert objects from multiple types to multiple types inside its ConvertTo() method. Public class CustomerToStringConverter : DataConverter You have the following ViewModel with one collection that contains custom objects of type Customer and another with an empty collection of strings: Let's start by creating a simple drag drop application with two RadListBoxes with ItemsSources of different types. This section will demonstrate the exact approach for creating a payload, attaching a DataConverter and using it. This DataConverter will be carried within the different methods and used in order to convert the DataObjects from one to another type. Using the DragDropPayloadManagerĪlong with the option to easily create a valid drag payload, the DragDropPayloadManager allows you to attach a DataConverter to it. This article will cover the main features of the DragDropPayloadManager as well as their usage within a sample drag-and-drop example between two RadListBoxes. The DragDropPayloadManager lets you easily generate valid drag payload objects that can be used in various drag-and-drop scenarios.
WPF DRAG DROP DATAOBJECT GETDATA TRIAL
String sCellBorder_Name = "cellBorder_IDMaschine_" + maschine.Download free 30-day trial DragDropPayloadManager ConvertFromString(_sColor_Cell) ĬellBorder.Background = new SolidColorBrush (color) Grid_(btnMitarbeiter_Schicht) Ĭolor color = ( Color ) ColorConverter. Set_Position_of_Element_in_a_Grid(btnMitarbeiter_Schicht, rowNr, iColNr) PreviewMouseLeftButtonDown += new MouseButtonEventHandler (Start_ Drag_Event) ConvertFromString(sColor_SchichtGruppe)) ītnMitarbeiter_Schicht.Content = mitarbeiter.Nachname ītnMitarbeiter_Schicht.Name = "button_IDMitarbeiter_" + mitarbeiter.IDMitarbeiter ītnMitarbeiter_Schicht. erstelle_Schichtplan_Eintrag(IDMaschine, IDSchicht, IDMitarbeiter, DatePlan, PosNrBesetzung) Ĭhild_Button.Background = new SolidColorBrush (color) Ĭode to create a button during the runtime.īutton btnMitarbeiter_Schicht = new Button () ītnMitarbeiter_Schicht.Background = new SolidColorBrush (( Color ) ColorConverter. get_Key_Value_from_String_as_Date(sPanelName, "DatePlan" ) ĬlsSchichtplan. get_Key_Value_from_String_as_Integer(sPanelName, "PosNrBesetzung" ) ĭateTime DatePlan = clsStrings. get_Key_Value_from_String_as_Integer(sPanelName, "IDSchicht" ) get_Key_Value_from_String_as_Integer(sPanelName , "IDMaschine" ) Private void Target_Border_Drop( object sender, DragEventArgs e)īorder target_Control = ( Border )sender get_Key_Value_from_String_as_Integer(sControlname, "IDMitarbeiter" ) Here is the file drop for example: string fileNames (string )e.Data.GetData(DataFormats. For the GetData part, you can use this to get specific data types. And implement the Drop event on it you can access the drop information in the event argument. String sName = ( string ) button.Content Just set the controls AllowDrop property to true. Private void Start_Drag_Event( object sender, MouseButtonEventArgs e) Int IDMitarbeiter = ( int ) e.Data.GetData( "IDMitarbeiter" ) String sName = ( String )e.Data.GetData( "Name" ) String sColor = ( String )e.Data.GetData( "Farbe" ) Ĭolor color = ( Color ) ColorConverter. Move) Įvent, the DragObject is read out directly DoDragDrop(button, dataObj, DragDropEffects. *set informations to the dragged objectĭataObj.SetData( "IDMitarbeiter" , IDMitarbeiter) ĭragDrop. But I needed the dataObject as a object. While drag dropping from a winforms control into a WPF control, the WPF control gives you in its drag event args. Of the Drag-Operation is then created a DragObject and this object is then I encountered a strange problem today when writing an App which involved WPF and Winform interop. Drop += new DragEventHandler (Target_ Border_Drop) That is on eIn drag process should rule then needs the property. PreviewMouseLeftButtonDown += new MouseButtonEventHandler ( Start_Drag_Event) PreviewMouseLeftButtonDown EventĪdded as an event in Xaml or as here at runtime as here to an event methodītnMitarbeiter_Schicht. Operation, any data can be transmitted at runtime.Ĭreate a drag process, all freely definable information is placed in aĭefined information can then be read out by the drag object at the target as inīutton element to be pulled requires one.
WPF DRAG DROP DATAOBJECT GETDATA CODE
C # Code example shows the simple creation of a drag and drop function in WPFĮxample, a rectangular planning field (WPF button) is drawn into a planning