I'm trying to change a panel to a specific form (as this is the only way I can fathom it) based on the selected TreeView node. For example, in Visual Studio, if you right-click on "Solution 'solutionname' (1 Project)", click 'Properties', it comes up with a tree list on the left side. When you click on a selection, the right pane changes.
I've searched continuously for hours the previous few days and only found a tutorial showing how it can affect a webBrowser control.
This is a farfetched example that I can understand:
private void tree_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
treeNode nName = e.Node;
//For testing:
string pg = "";
pg = nName.Tag;
if (pg == "Form2") display = Form2;
}
Display is a panel. I know this is absolutely wrong, but I couldn't find any proper method using my search terms.
You will need to set Visible on all your panels to false, except for the one you want to display which will be set to true.
WinForms does not have any particularly nice way of setting this up. You could set the Tag property of each node to be a reference to the panel (this has to be done programmatically - the designer won't let you do it), then iterate through the entire tree view to set ((Panel)node.Tag).Visible = false followed by ((Panel)e.Node.Tag).Visible = true or you can maintain the list separately. If you don't have many panels, a switch/if-else block may be okay, too.
Related
I am currently working on a Editor, which lets the user design his own WinForm overlay, at least to a certain point.
Therefore I want the user to decide, which AnchorStyles the current selected Control should have. I would like it to be handled by checkboxes. Here's how I had it in mind:
As you can see, the user has currently selected a dynamically added Panel, called Grid. Handled by the CheckBoxes to the right, he should now be able to set the selected Controls AnchorStyles.
Here's my problem: I can't seem to find a usable solution, to dynamically add a specific AnchorStyle to the already existing ones, or the opposite, remove the AnchorStyle, but keep the other ones as they are.
I was trying to get it to work with...
SelectedControl.Anchor += AnchorStyles.Top;
which doesen't work at all. So i thought of this...
SelectedControl.Anchor = SelectedControl.Anchor | AnchorStyles.Top
which I imagine could work, but I haven't even tested it, since I wouldn't know how to remove ones unchecked AnchorStyle.
Building a gigantic if(){} else if(){}... doesen't seem to be a good Idea :)
I'm open for any ideas / solutions.
Thanks in advance!
Assuming you have four check box controls named top, bottom, left and right, you can handle CheckedChange event of them using a single method and set the anchor of the desired control based on the checked value of the controls. For example:
private void checkBox_CheckedChanged(object sender, EventArgs e)
{
var values = new[] { top.Checked, bottom.Checked, left.Checked, right.Checked };
byte[] data = new byte[1];
new BitArray(values).CopyTo(data, 0);
selectedControl.Anchor = (AnchorStyles)data[0];
}
Note: AnchorStyles is a flag enum having top=1, bottom=2, left=4 and right=8. Using above code I've mixed those flags to create the AnchorStyles and have assigned to the Anchor property of control.
I have a TreeView-control in my form which shows a set of nested nodes. Those nodes are just options to be checked or unchecked grouped by a certain attribute present on every single node. Furthermore there´s a second TreeView with the same nesting, however the nodes within that list are just for information. That is user shouldn´t be able to check or uncheck them at all.
So I tried to disable the checkboxes for every node within the second tree by setting the Checkboxes-property to false. I also registered for the BeforeCheck-event:
m_treeView.BeforeCheck += m_inactiveValidationsTreeView_BeforeCheck;
m_treeView.Checkboxes = false;
// ...
private void m_inactiveValidationsTreeView_BeforeCheck(object sender, TreeViewCancelEventArgs e)
{
e.Cancel = false;
}
However all items still have the checkboxes. How can I disable checkboxes for all my nodes (not just making them greyed out but just making them invisible).
Look here
There is no straight way for this. A TVM_SETITEM message needs to be sent to the treeview control, set TVITEM structure's state field to 0, and TVITEM's hItem field to the treenode's handle.
i'm using telerik control.
So i want to ask,
In winforms application ,Is it possible to add more than one panel in same location and display one at a time just like show/hide property.
Make sure you have placed all panel control in same container or form. then you can use Visible property to show and hide panel. BringFront and SendToBack function will be used to bring panel on top or send it to back. If you have placed any panel in another panel then that will be disappeared when you Hide parent panel. So, Make sure all panels' parent control must be same. To determine the parent control simply select that panel and press escape key to select their parent.
private void LoadPanels()
{
panel1.Location = new Point(10,10);
panel2.Location = new Point(10,10);
panel3.Location = new Point(10,10);
panel4.Location = new Point(10,10);
panel5.Location = new Point(10,10);
VisiblePanel("panel1");
}
private void VisiblePanel(string panelName)
{
string[] panels = new string[]{"panel1","panel2","panel3","panel4","panel5"};
for (int i=0;i<panels.Length;i++)
this.Controls[panels[i]].Visible = (panels[i] == panelName);
this.Controls[panelName].BringToFront(); //Not required you can remove this line.
}
Here's a slightly different approach you might want to consider...
Are you wanting to be able to programmatically select the contents of a rectangular area at runtime, selecting among various controls to display? If so, you could use a custom TabControl which has its tabs (not the pages) hidden.
Then you can select which page is displayed by programmatically changing its SelectedIndex property at runtime.
Doing it like this means that your form editor will show a normal tab control, which allows you to much more easily add the content to each page - but at runtime the tabs will be hidden from the user; they will just see the contents of the currently selected page.
See Hans Passant's answer here for how to create such a custom tab control.
(However, you might also want to override the OnKeyDown for the custom tab control in order to ignore Ctrl-Tab.)
So I am trying to add a UserControl to a windows form, however I want to add it in a variable location when a button is clicked.
So I have a groupbox in one location and I want the first one to go to the extreme left directly under the groupbox, I then want the next one to be in a position relative to the first, and all subsequent ones to be in a position in relation to the one before. However with restricted space a new line of these controls would have to be eventually created.
I am not sure if this is possible, or how I would do it. Currently I only know how to define a specific point for the control to be created at.
The only part of the code that really matters:
private void addpilot_Click(object sender, EventArgs e)
{
PilotControl newPilot = new PilotControl();
newPilot.Location = new Point();
this.Controls.Add (newPilot);
}
I think that this behavior could be similar to a WrapPanel. If it is not, you may try to solve this using another Panel, or also, implementing your own panel to create an specific location behavior.
Try seen Panels Overview in the MSDN.
Look into docking and flow controls.
i'm developing a windows form application.in the form, the left part is a tree menu, and the right part is show area. how can i change the show area according to what i click on the tree menu.
(source: 126.net)
i use treenode class to implement treemenu like this:
System.Windows.Forms.TreeNode treeNode27 = new System.Windows.Forms.TreeNode("basic operation");
what i try to do is use several panels. each panel bounds to a menu item. by setting the visible property, i can achieve that goal. but it is too inconvenient.especially when i try to design each panel.
any good suggestion?
You could design each "Panel" as a new User Control. That way you can design all of the "panels / areas" on their own, independently of the Main Form.
On your Main Form, create a single panel for the right hand side area and add all of the controls to that one panel.
Then when the TreeNode selection event happens you can set all the user controls to .Visible = false; except for the one you are showing and set that to .Visible = true; and .Dock = DockStyle.Fill;
What you need is an event handler that will be called at the time of the user clicking the treeview (Use TreeView from the toolBox). You can do that by selecting the treeview on the design page and under properties click on Events. Then select NodeMouseDoubleClick or NodeMouseClick depending upon what you want. Below is a code that captures the values selected...Enjoy...;)
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (treeView1.SelectedNode.Level == 2)
{
//text on the first level
string text = treeView1.SelectedNode.Text;
}
else if (treeView1.SelectedNode.Level == 1)
{
//text on the second level
string text = treeView1.SelectedNode.Text;
}
}