I need to know how to create a property in my user control like font property in textbox control.
That property should open a dialog box to place different values.
You can do this, but it requires lots of bits.
The walk through is here, but since link only answers are not always useful, here are the highlights.
Create a view control for the editor
Derive a custom editor class from the UITypeEditor
Override the GetEditStyle method to use your custom editor class
Override the EditValue method to wire up the custom editor to the property value
Related
i used PropertyGrid control to display properties on gridview.
i have taken an reference of this link http://www.c-sharpcorner.com/article/using-property-grid-in-c-sharp/
which is showing like this
But i need checkbox just before the property name shown in red mark on check/uncheck for any property i need to build expression.
I recommend reading this: How do I change boolean properties with one click in PropertyGrid.
It extends the PropertyGrid control and defines its checkbox controls using UITypeEditor.
As Reza mentioned, your choice of control does not appear optimal. You should probably create a form with TextBox, CheckBox, ComboBox etc. Or make use of DataGridView if your display is catering for multiple records at same time.
If you most definitely want to customize PropertyGrid, here is my another answer which might help you start with.
Linked answer:
You can make use of TrackBar. Note that PropertyGrid by default does
not allow you to add controls like these to it. So, you will need to
do some work here. You will need to create a class that inherits from
System.Drawing.Design.UITypeEditor. Next you will have to set the
editor attribute for the property that has to display track bar as
control. Note that unless you do custom paint, it will be shown as
modal dialog or as dropdown editor.
I inherited the CheckBox class to design a custom user control and I would like to specify the same icon image for my toolbox item like the default image that is shown for the Microsoft's WindowsForms CheckBox toolbox item.
To understand what I mean:
I think this would be possible using the ToolboxBitmap attribute, however I'm in the need to provide the assembly that contains the user control without additional files, so I can't use a local filepath to specify a custom image and the overload where lets you specify a Type/Assembly and what it seems a resource name I really don't know how I should use it.
Or maybe specifying the proper value in the ToolboxItem or the Designer attributes, however, I don't know how to do so.
If necessary, I know how to obtain the default checkbox image by downloading the Visual Studio Image Library but once I have the image and after adding it to the resources of my assembly I don't know what to do with it and with the ToolboxBitmap attribute.
This is the code I have done to get an idea, the commented lines are just things that I'm testing randomly to try solve this issue:
'<ToolboxBitmap()>
'<ToolboxItem("System.Drawing.Design.ToolboxItem, ???")>
'<Designer(GetType(CheckBox), GetType(IComponent))>
<DesignTimeVisible(True)>
<ToolboxItemFilter("System.Windows.Forms", ToolboxItemFilterType.Require)>
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")>
Public Class ElektroCheckBox : Inherits CheckBox
End Class
PS: Please note that I have the same need to accomplish for other user controls that does not inherit from CheckBox class, so an extended help would be very gratefuly from my side if I can understand how to do the same I mean how I can specify for my toolbox item the default image of other controls like for example a Listview or a Listbox.
In my windowsForm application I use a PropertyGrid to edit the instances of my class: some of these properties are floating point with maximum and minimum item.
I wish modify them by a slider or something like it.
I've found this: http://www.visualhint.com/propertygrid but is not free..
do you have an idea to help me?
You can make use of TrackBar. Note that PropertyGrid by default does not allow you to add controls like these to it. So, you will need to do some work here. You will need to create a class that inherits from System.Drawing.Design.UITypeEditor. Next you will have to set the editor attribute for the property that has to display track bar as control. Note that unless you do custom paint, it will be shown as modal dialog or as dropdown editor.
I work with a custom TextBox in a winform project, I added this property in my custom TextBox:
private TextBox _nextControl;
public TextBox NextControl
{
set { _nextControl=value; }
get { return _nextControl; }
}
and I got this result for a form with 2 TextBox(textBox1 and textBox2) in my custom TextBox properties with the property NextControl; I can see all TextBoxes in the form:
In this case the property NextControl will show all TextBox in my form to select my next control.
But when I want to do the same in my new WPF costum TextBox I got this with the same condition(2 TextBoxes, textBox1 and textBox2):
Why I don't have the same result? And how to do this in my WPF project?
Update:
For more explanation, in my winform project I use the property NextControl to select the next control from the UI properties.
protected override void OnKeyDown(KeyEventArgs e)
{
if(e.KeyCode==Keys.Down)
// select the next TextBox chosen in this TextBox option
_nextControl.Select();
}
Because I can already choose the name of the next TextBox in UI, I don't want to do this with extra code.
But this not work in WPF: I can't see the names of my TextBoxes in my window for the property NextControl(automatically in winform if I choose the type of property = TextBox).
p.s.: My custom TextBox inherited from System.Windows.Controls.TextBox.
Update:
I uploded a winform project with the custom TextBox [here] of a sample project for what I want a WPF can behaves the same.
I've updated the link of this sample.
Quick look in your code is telling me that your Windows Form User Control is not compatible with WPF, specially the keyDown event in Windows Form parses parameter "KeyEventArgs e", this is a System.Windows.Form.Key but WPF parses "System.Windows.Input.Key" and WPF doesn't have "Select() method for textbox. Also the WPF binds controls in very different way to the WinForm, therefore your WinFromuserControl Will not work in WPF forms.
If you want to use similar behavior in your WPF form, you have to write one that will be supported in WPF.
From your explanation what I could understand is,
You are using a custom text box class which have NextControl property of Type TextBox
You need the Custom text box to automatically transfer focus to the next text box when you press the down arrow key
You need Visual Studio design support to select which is the next control for all your CustomTextBox instances.
Earlier in Winforms Visual studio supported selection of available matched types from the interface. But now in WPF its not supporting out of the box. (We can achieve this by extending the property grid)
In your case you can make the NextControl as dependency property and achieve the relation to the next control using data binding
For data binding you need to click on the square displayed in property grid at the end of property name but left of property drop down.
Hope you are aware of dependency properties and WPF data binding. The binding you need to use is the the Element name binding.
Based on the fact you are looking for a textbox (a known value) the WinForms application is helping you out filling the propertygrid. Like is true for most of your own controls in WinForms you need to suply the values yourself in WPF this time.
The how part of your question has in basis been answered here and here
Implementing the ICustomTypeDescriptor seems like a hard thing to do but actually most functions can just return the TypeDescriptor's implementation.
The only interesting one is GetProperties where you can return a new PropertyDescriptorCollection that contains the array returned from control.Children.OfType();
When you have a TableLayoutPanel on your Form and you drag a Label into a cell, a few properties are available on the Label control. I think the same construction is used when you drag a Tooltip control on the form.
I'd like to know which design pattern is used to achieve this. Is this the decorator pattern?
What you are seeing are called Extender Providers.
For example, when a ToolTip component is added to a form, it provides
a property called ToolTip to each control on that form. The ToolTip
property then appears in any attached PropertyGrid control.
http://msdn.microsoft.com/en-us/library/ms171836.aspx
I can't think of a well-known pattern that describes how they work, exactly, but the mechanism is simple.
You must implement IExtenderProvider. The WinForms Designer will call CanExtend for each other control on the surface, and your extender can specify if it provides additional attributes for each control.
public interface IExtenderProvider {
bool CanExtend(object extendee);
}
The actual attributes that other controls will be extended are declared using the ProvidePropertyAttribute and a method to provide the value.
No, this is not achieved through a design pattern. These properties are simply the public properties exposed by the control, these properties are added to the control via inheritence, i.e. they sub-class Control. The visual studio designer inspects the class which implements these controls to determine the properties they expose, then provides you with a UI for setting them.