I've created user control which hosts datagridview and other controls.
Then I drop it onto a form.
How do I allow myself to customize grid's properties (like which columns are shown) in a target form?
I thought setting its modifier to public will suffice.
That should do it, then you can address the grid through your user control instance. Assuming you control is named "MyControl" and your grid within the control is named "MyGrid" then you should be able to use MyControl.MyGrid. to get to the properties.
You can add properties to your UserControl that helps you to change design of your Control from different forms.
Problem not solved in that general way I initially posed it.
As a quick hack I declared public properties for some of the grid properties I needed (like Columns collection)
Tnanx for your help, though.
Related
I use a Contentcontrol to show the user controls of the program, Now there is a problem for me to close the user controls After searching, I found an example that The user controls is loaded on a DockPanel
Now my questions:
What is the difference between these two controls? (Dockpanel vs ContentControl)
Is it okay to use this control(dockpanel) Instead of Contentcontrol to display application user controls?
Is there a similar code for Contentcontrol?
ucChild ChildWindow = new ucChild();
ChildWindow.ParentControl = this.UIPanel;
UIPanel.Children.Clear();
UIPanel.Children.Add(ChildWindow);
Standard disclaimer for people coding WPF like it is WinForms: First off; direct UI manipulation like this is a bad idea. You should
be modifying a view model and allowing the binding system to update
the UI. Use the MVVM pattern; WPF will work for you instead of
against you
To your actual questions:
Everything. I mean; they both inherit from FrameworkElement but that's about it in terms of commonality.
A DockPanel is as the name suggests, a Panel. That is; it controls the layout and sizing of one or more child elements. Specifically, DockPanel is good at situations like the following: you want an element to use up a full column of width, then another span the top (except for the previous element) and have the last element fill the remaining space.
A ContentControl is basically a placeholder, its purpose is to expose a settable (and most importantly, bindable) Content property that you can stuff another control into. Even better; you can put an actual object there and use a DataTemplate to control the display (this approach would conform to MVVM).
You can't really replace one with the other, see above
No. ContentControl is not a Panel and so does not have the Children property.
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 have created a Windows form using a Tab Control, but it has a header with it. I want to hide it. I am not able to do it using any properties of the Tab Control. Is there any property defined for hiding the tab header for the Tab Control without going through the code?
Use following code to hide the tabs or set these properties in design.
tabControl.Appearance = TabAppearance.FlatButtons;
tabControl.ItemSize = new Size(0, 1);
tabControl.SizeMode = TabSizeMode.Fixed;
You want the tab panels without the feature allowing a user to switch between them, so I suppose you want to create few separate sets of controls to be shown to the user one at a time. You can achieve this in several ways (you can choose one of them if you find it appropriate in your case):
Use several Panel controls instead of several tabs in the TabControl, however, it would be hard to work in the designer, because all the controls would be visible
Use different Forms instead of tabs to keep the layout parts separated. It can be ok, but you may not want to use multiple Forms, so it depends on a specific case.
and finally, the suggested solution:
Encapsulate each set of controls in a UserControl. This allows you to keep each layout separately, so you can easily design each of them without the other controls getting in the way ;). The the code handling each of the layouts would also be separated. Then just drag those controls in the Form and use set their visibilities appropriately to show the one you want.
If none of those suggestions work for you, let me know, so I can look for other possible solutions.
It's more easy as you think, you just drag the panel's window upper, so will be outside of the form.
Use DrawMode: OwnerDrawFixed will hide TabPage header text DrawMode : OwnerDrawFixed
Another way to achieve the same (or similar) is: You can remove tabs from TabControl.TabPages collection and then add the tab you want to show.
During the Form initialization I remove tabs (so into the designer I can easily manage them) and in some control event (as button click) I show the tab the user has to see.
Something like that:
// During form load:
ctrTab.TabPages.Clear();
// ......
// During button click or some other event:
if(rbSend.Checked)
ctrTab.TabPages.Add(pgSend);
else
ctrTab.TabPages.Add(pgReceive);
In this way the user can still see the header tab but just as title of controls group, he can't change/switch the current active tab.
I have some problems trying to update components of surface elements. I dont know if my approach to the problem is wrong, since I'm new to the topic.
My point is represented by the following diagram
According to the option that is selected in the menu, load different user controls as only child of StackPanel but i'm habing problems for update the Listview from loaded user controls, example: when I save a new item I need to recharge the list of items in the ListView
MVVM would be a good pattern here. If you have a problem passing data between controls - why not introduce them on top of unified data layer? Consider this:
Three radio buttons in your Menu, each one's IsChecked property bound to Visibility property of your respective UserControl.
StackPanel holding all three UserControls
ListView bound to ViewModel's List<Item>
Each of your UserControls bound to ListView.SelectedItem: one of them using TextBlock for read-only, one using TextBox for editing. Third one would create new item in your List<Item>. You would have to create ItemTemplate for each or create one UserControl (since they look very much alike) and use DataTemplateSelector.
If you're not familiar with MVVM here is a good start. You can also use one of the existing frameworks like MVVM Light
You can create an event on your child
public delegate void HandleNAMEOFYOURHANDLEEVENT();
on your child class
public event HandleNAMEOFYOURHANDLEEVENT yourInstance;
to use it on your child class
if (!ReferenceEquals(yourInstance, null))
{
yourInstance();
}
and you declare it on your parent like other event.
I have created a custom control that inherits System.Windows.Forms.Panel, and adds a few extra properties. I then intend to create child classes that inherit this custom-panel class, and add content to them.
The custom-panel class will be passed to a "Wizard" framework (with back/next buttons) as the content for the various steps. I intend to make extensive use of this, creating 40-50 different pages for Wizards to handle various things in my project.
Question: Is there a way to view just the panel in the Designer, and modify its layout and design from there? I could code everything the hard way, but I really don't want to.
I did some searching and found this article, but that discusses creating a custom control and adding it to a library. I don't need to do this, I just want to view/edit the control in Designer directly, without adding it to a Form.
Obvious Answer to the rescue again.
Create a custom control, add the layout/split panel as desired, and change it's property to DockStyle.Fill.
This makes your custom control "behave" like the layout control, as long as you add all other controls to the layout control.
add first this name space
using System.ComponentModel.Design;
Apply the System.ComponentModel.DesignerAttribute attribute to the control as follows:
[Designer("System.Windows.Forms.Design.ParentControlDesigner, System.Design", typeof(IDesigner))]
public class UserControl1 : System.Windows.Forms.UserControl
{
...
}
now you can edit your custom user control in designer environment