I have two quick, easy questions on C# in Visual Studio. First, is there anything like the label, but for an area of text in the program? I would like to have multiple lines of text in my program, but can only seem to accomplish it with a DotNetBar label with wordwrap turned on.
Second, is there any way to have a hyperlink in the middle of the text without using a link label? If I wanted to generate text like "An update is available, please visit http://example.com to download it!", is it possible to make the link clickable without having to position a link label in the middle of the text?
You can use a LinkLabel and set its LinkArea property:
//LinkArea (start index, length)
myLinkLabel.LinkArea = new LinkArea(37, 18);
myLinkLabel.Text = "An update is available, please visit http://example.com to download it!";
The above will make the http://example.com a link whilst the rest of the text in normal.
Edit to answer comment:
There are various ways of handling the link. One way is to give the link a description (the URL) and then launch the URL using Process.Start.
myLinkLabel.LinkArea = new System.Windows.Forms.LinkArea(37, 18);
myLinkLabel.LinkClicked += new LinkLabelLinkClickedEventHandler(myLinkLabel_LinkClicked);
myLinkLabel.Text = "An update is available, please visit http://example.com to download it!";
myLinkLabel.Links[0].Description = "http://example.com";
And the event handler can read the description and launch the site:
void myLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
Process.Start(e.Link.Description);
}
You may try RichTextBox control.
string text = "This is the extract of text located at http://www.google.com and http://www.yahoo.com";
richTextBox1.Text = text;
richTextBox1.ReadOnly = true;
richTextBox1.LinkClicked += (sa, ea) =>
{
System.Diagnostics.Process.Start(ea.LinkText);
};
You can use the normal label and make the AutoSize property as false.
And then adjust your width and height it will wrap by it self
I assume you are using doing a windows application, and not a web application.
In C# you can create a normal textbox by dragging and dropping it onto your form, change its property to multi-line, and make it read only. Thats what I always do.
As for adding a link to the text without a linklabel. There is a way to add links to textboxes. You can check out a pretty good tutorial at http://www.codeproject.com/KB/miscctrl/LinkTextBox.aspx/
Related
Question: How can I make a list of link buttons so that when a user clicks on a link it opens it up in windows explorer.
So I have a rich text box that contains a list of all folder names and I have a list of all the folder paths. I want to be able to click on the folder name and have it linked using the path to the correct folder in windows explorer.
LinkLabel link = new LinkLabel();
link.Text = transfer2;
//link.Text = "something";
link.Name = dirName;
link.LinkClicked += new LinkLabelLinkClickedEventHandler(this.link_LinkClicked);
LinkLabel.Link data = new LinkLabel.Link();
data.LinkData = #"C:\";
link.Links.Add(data);
link.AutoSize = true;
link.Location =
this.Display_Rich_Text_Box.GetPositionFromCharIndex(this.Display_Rich_Text_Box.TextLength);
this.Display_Rich_Text_Box.Controls.Add(link);
this.Display_Rich_Text_Box.AppendText(link.Text + " ");
this.Display_Rich_Text_Box.SelectionStart = this.Display_Rich_Text_Box.TextLength;
I started with this code. I am using a foreach statement to get the folder names and path. I tried to change the name of link so it will appear to the user that they are clicking on folder A, but when you click on folder A it uses the path to open the windows explorer where the folder is from.
Any ideas or help would be greatly appreciated.
Update
I changed the code a little so now it will display, but I cant scroll down. It appears to be only on the surface as I ran something in the rich textbox and it was scrollable while the link stayed on the surface.
I also added a picture so you can see what the problem is. I scrolled a little bit so it would b easy to see.
LinkLabel link = new LinkLabel();
link.Text = dirName;
//link.Text = "something";
link.Name = transfer2;
//link.LinkClicked += new LinkLabelLinkClickedEventHandler(this.link_LinkClicked);
LinkLabel.Link data = new LinkLabel.Link();
data.LinkData = #"C:\";
link.Links.Add(data);
link.AutoSize = true;
link.Location =
this.Display_Rich_Text_Box.GetPositionFromCharIndex(this.Display_Rich_Text_Box.TextLength);
this.Display_Rich_Text_Box.Controls.Add(link);
this.Display_Rich_Text_Box.AppendText(link.Text + "\n");
this.Display_Rich_Text_Box.SelectionStart = this.Display_Rich_Text_Box.TextLength;
Update: I am trying to make essentially a list of hyperlinks so I don't think I can use linklabel as I think it is in a fixed position.
For the first part of your problem, opening Explorer, you can do this on the click event for each item in the list (or the click event of the whole list area, as I describe later):
System.Diagnostics.Process.Start("explorer.exe", "\"" + path + "\"");
(the quote/slash thing is to make sure paths with spaces work)
For the UI bits, I've never even seen LinkLabels before, so I don't know how you got on the road to that, lol! I'm not sure whether you're using WinForms or WPF but in either you'd generally want to use something like a ListBox (or a custom control that behaves/looks precisely how you want, but I'd guess you aren't ready for that). In WPF you could set the ListBox's ItemsSource to your data and DisplayMemberPath to whatever property the text comes from (if it is only strings then just don't set DisplayMemberPath). You'd then set up an event for clicking on the ListBox and respond to that by checking what item is selected and running the code above to open Explorer.
If you want to get your UI working with minimal changes, try replacing the LinkLabels with Buttons (you can style them to look like links if you want, at least in WPF) since those work the same way.
I have a little help pop-up that displays some text when the user presses a "?" label next to a drop-down to explain the different selections.
I did it using the Help.ShowPopup command since that seemed the easiest.
I was hoping there was a way to add different font properties to parts of the text or at least to the whole thing without having to go the direction of a CHM/HTML help-file.
Here is what I am trying to do:
private void helpLbl_Click(object sender, EventArgs e)
{
// for some reason, it ignores the 'parent' parameter
// and lays it out on the screen's coordinates
Point helpLocation = helpLbl.PointToScreen(Point.Empty);
helpLocation.Y += helpLbl.Height; // have it display underneath the control
Help.ShowPopup(this, // hosting form
#"<b>Fixed:</b>
Removes a fixed amount from the sale
<b>Percent Value:</b>
Removes a set percentage of the selected package from the sale
...", helpLocation);
I was hoping since there's the option to use an HTML document to display the help, I could use HTML tags to format what was being displayed, but it doesn't appear so. Any ideas?
Is there a way to do something like displaying a RichTextBox in the help pop-up?
Another possibility is generating a HTML document on-the-fly, but it asks for a "url" if I'm not supplying the text directly and I think that might be a little over-kill for the small amount I'm trying to do here.
You have two options. One is to use a WebBrowser Control. This natively accepts HTML and displays it. The problem with it is its kind of bloated just to use as a simple label.
Your second option is to simply create a RichTextLabel, simply like this:
public class RichTextLabel : RichTextBox
{
public RichTextLabel()
{
BorderStyle = BorderStyle.None;
}
}
Add this to your form and set the Rtf property to your RTF code. You will have to convert your HTML to RTF, which is easy if you got a program such as Microsoft Word, for example.
I have been reading up on dynamic link labels, and yet, I have not found my answer. In my code, I am reading off of a .csv file, with the basic setup that checks the lines and if every third one is filled, its a link. This all is in a tableLayoutPanel mind you. I'm creating the label like so:
tableLayoutPanel1.Controls.Add(new LinkLabel() { Text = "TEST",Name = count.ToString(),Tag = #"N:\reuther", Anchor = AnchorStyles.Left, AutoSize = true }, 2, 3);
The problem that I'm having, is that some of these columns could be empty, meaning I really don't know how many in total I will have at any moment. Any notes I have seen online, name the dynamic link, and then proceed to use a private function detecting that the particular link by name was clicked. I can't do that because I will never know how many links will be needed until runtime. I can(and did) in my example, name the link, is there anyway to use a generic .Click event that will detect any click, at which point I can just have it open the path by tag? Is there any other way to go around this?
Thank you.
With a little more tinkering, I solved the issue.
LinkLabel[] linkLabel = new LinkLabel[100];
linkLabel[count] = new LinkLabel();
linkLabel[count].Tag = #"N:\reuther";
linkLabel[count].Text = "Click Me";
tableLayoutPanel1.Controls.Add(linkLabel[count], 3, 4);
private void LinkedLabelClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
string filepath = ((LinkLabel)sender).Tag.ToString();
System.Diagnostics.Process.Start(filepath);
}
In this method, I created an array that stores 100 link labels. As I create them, I use a counting method to count how many links have been created. With each link, I used .Tag to set the filepath, and finally set the string filepath to the Tag, which allowed me to open it with the line afterwards. Thank you.
i have a twitter application that retrieves user timeline and appends it to a rich text box. However when i click the links nothing happens ?
What's wrong here doesn't rich text box automatically handles the creation of new broswer windows with the specified link. If not then how can i implement such functionality ?
and i am using winforms.
First You have set DetectUrls property set to True
Then
RichTextBox1_LinkClicked(System.Object sender, System.Windows.Forms.LinkClickedEventArgs e)
{
Process.Start(e.LinkText);
//open link with default application
}
Also see this link for more.
What worked for me:
Process.Start("http://www.example.com/");
This will open the link in the users default browser.
There are some things that I didn't find how to do using geckofx:
Get the URL of a clicked link.
Display print preview window.
Does this functionality exist in geckofx? If not, what's the best way
to achieve it in a C# project that uses GeckoWebBrowser to display html pages?
Thanks
To get url of clicked link you can use:
void domClicked(object sender, GeckoDomMouseEventArgs e)
{
if(geckoWebBrowser1.StatusText.StartsWith("http"))
{
MessageBox.Show(geckoWebBrowser1.StatusText);//forward status text string somewhere
}
}
To show print dialog box you can use:
geckoWebBrowser1.Navigate("javascript:print()");
OnNaviagted event should give you the link, and look for the print interfaces nsIPrintingPromptService::ShowPrintDialog in Geckofx.
geckoWebBrowser.url
That will give you the url at any point I believe where geckoWebBrowser is the name of the control, however as pointed out you'll be able to get it from the document completed and navigated events using e.url .
For printing, see this forum thread. Make sure to read it all before starting. Essentially you'll have to patch and recompile GeckoFX.