PropertyGrid control (sheet or property) is a component that we include in our projects, as editor of properties of controls or objects contained therein. Its use allows us to modify the value of a property at run time, the same way as the Properties window of Visual Studio IDE allows us to do at design time.
Its structure consists of two columns and many rows, as properties in control or the associated object. The first column contains the name of the property and the actual value thereof. These values \u200b\u200bcan be entered directly or through the appropriate editor who vary depending on the type of value.
PropertyGrid control allows us to provide greater functionality to our applications, is an interesting way to mechanize the handling properties, and offers users the ability to customize those aspects for which had been scheduled.
PropertyGrid ADDING OUR CONTROL PROJECT
First we add to our project a PropertyGrid control . This we can do with the following line of code. PropertyGrid
HojaPropiedades = new PropertyGrid ();
CONTROLS AND OBJECTS ASSOCIATED
As mentioned above, a PropertyGrid control is typically associated with a control (instance of a class belonging to Visual Studio or other third-suite), or an object (instance of a class created by us). The associated control or object is selected using the property SelectedObject, and how value is entered the name of the elected body.
HojaPropiedades.SelectedObject = Label1; / / Set the properties of Label1 control
HojaPropiedades.SelectedObject = Button1; / / Set the Button1 control's properties
HojaPropiedades.SelectedObject = Entidad3D ; / / Set the object properties Entidad3D
In first two cases, control HojaPropiedades show the properties of each of the associated controls. In the third case, the properties would be shown that the derived class Entidad3D instance, had declared.
DEFINING THE PROPERTIES OF A CLASS
To set a property within a class using the following syntax:
[ Property Attributes] TipoPropiedad propertyName {{ September for writing code values \u200b\u200b } { get code to read values}} So in this way, the class definition Entidad3D , would be as follows.
1: public class Entidad3D
2: { 3: / / / The following fields are private fields properties
4: / / / visible in the property sheet.
5: / / / General category
6: private string _Name;
7: private string _Clase;
8 : private Color _ColorLineas = SystemColors.ControlLight;
9: private Color _ColorFondo = SystemColors.ControlDarkDark;
10: private string _Group;
11: / / / category XYZ coordinates
12: private XYZ = _Coordenadas new XYZ ();
13: private XYZ = _CoordenadasEjes new XYZ ();
14: /// categorÃa Modificadores 3D
15: private float _EscalaX;
16: private float _EscalaY;
17: private float _EscalaZ;
18: private float _RotacionX;
19: private float _RotacionY;
20: private float _RotacionZ;
21: / / / Categoria United
22: private bool _Activada;
23: private bool _Visible;
24: private Font _Fuente = new Font ( "Arial" , 8, FontStyle.Regular);
25: 26: / / / Definition of the code for properties
27: [CategoryAttribute ( "General" )
28: DescriptionAttribute ( "Set the name for the instance of the class." )
29: DefaultValueAttribute ( "Entity" )]
30: public string Name
31: {32: get { _Name return;}
33: _Name set {value = ;}
34 :} 35: [CategoryAttribute ( "General" )
36: DescriptionAttribute ( "Shows the name of the source class." )
37: ReadOnlyAttribute( true )]
38: public string Clase
39: { 40: get{ return _Clase;}
41: set { _Clase = value ; }
42: } 43: [CategoryAttribute( "General" )
44: DescriptionAttribute ( "Set the color of the lines in the wireframe." )]
45: Color public ColorLines
46: { 47: get { _ColorLineas return;}
48: _ColorLineas set {value = ;}
49:} 50: [CategoryAttribute ( "General" )
51: DescriptionAttribute ( "Set the background color in wireframe." )]
52: Color ColorFondopublic
53: { 54: get { _ColorFondo return;}
55: _ColorFondo set {value = ;}
56:} 57: [CategoryAttribute ( "General" )
58: DescriptionAttribute ( "shows the group to which the entity." ) ,
59: DefaultValueAttribute ( "None" )
60: ReadOnlyAttribute ( true)]
61: public string
Group 62: {63: get { _Grupo return;}
64: _Grupo set {value = ;}
65: } 66: [CategoryAttribute ( "XYZ" )
67: DescriptionAttribute ( "Deploy to establish the coordinates of the entity." )
68: DefaultValueAttribute ( "0, 0, 0" )]
69: public XYZ coordinates
70: { 71: get {return _Coordenadas;}
72: _Coordenadas set {value = ;}
73:} 74: [CategoryAttribute ( "Coordenadas XYZ" )]
75: public XYZ CoordenadasEjes
76: { 77: get { _CoordenadasEjes return;}
78: _CoordenadasEjes set {value = ;}
79:} 80: [category attribute ( "Modificadores 3D" )]
81: public float EscalaX
82: { 83: get{ return _EscalaX;}
84: set{_EscalaX = value ;}
85: } 86: [CategoryAttribute( "Modificadores 3D" )]
87: public float EscalaY
88: { 89: get{ return _EscalaY;}
90: set{_EscalaY = value ;}
91: } 92: [CategoryAttribute( "Modificadores 3D" )]
93: public float EscalaZ
94: { 95: get{ return _EscalaZ;}
96: set{_EscalaZ = value ;}
97: } 98: [CategoryAttribute( "Modificadores 3D" )]
99: public float RotacionX
100: { 101: get{ return _RotacionX;}
102: set{_RotacionX = value ;}
103: } 104: [CategoryAttribute( "Modificadores 3D" )]
105: public float RotacionY
106: { 107: get{ return _RotacionY;}
108: set{_RotacionY = value ;}
109: } 110: [CategoryAttribute( "Modificadores 3D" )]
111: public float RotacionZ
112: { 113: get{ return _RotacionZ;}
114: set{_RotacionZ = value ;}
115: } 116: [category attribute ( "Estados" )]
117: public bool Activada
118: { 119: get { _Activada return;}
120: _Activada set {value = ;}
121:} 122: [category attribute ( "Estados" )]
123: public bool Visible
124: { 125: get { _visible return;}
126 : _visible set {value = ;}
127:} 128: public Font Fuente
129: { 130: get { _Fuente return;}
131: _Fuente set {value = ;}
132: } 133:} ATTRIBUTES OF PROPERTIES
The definition of class properties Entidad3D , have used some special attributes. This is due, that we may set certain characteristics of properties of the classes whose objects associated with a PropertyGrid control by optional attributes included in the System.ComponentModel space. These attributes are as follows.
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CategoryAttribute (String) classifies properties into groups.
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DescriptionAttribute (String) descriptive text that appears in the bottom of the PropertyGrid when you select the property.
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BrowsableAttribute (Boolean) Determines if the property is or is not in control. The default value is True (True).
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ReadOnlyAttribute (Boolean) allows or prohibits the user to edit the property to enter values. The default value is False (false).
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DefaultValueAttribute (Object) Sets the default value of the property.
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DefaultPropertyAttribute (String) This attribute does not apply to a property but to the class. Sets the property that is selected when the object is given control.
FINAL RESULT The result of the foregoing in the above lines would be a property sheet object Entidad3D , as we see in the image on the right.
I hope you liked it.
A greeting and to another.
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