I've created textboxes to use them in winforms - the textbox is done in wpf and integrated in the form. The problem is when I input some text in it, it doesn't really "read" it. The name of the textbox is elementHost1, and if I go like this:
string input1 = elementHost1.Text;
and I write something in the textbox, it's not shown in the string. Is there something wrong in the WPF code? I checked for something saying "IsReadOnly" but there wasn't anything like that.
No, the name of the ElementHost is elementHost1. The text box is hosted inside of that. You'll need to get at the actual object inside the element host in order to get at the text.
To do that, access the .Child property to get at the textbox hosted inside the ElementHost:
var elementHost = this.elementHost1;
var wpfTextBox = (System.Windows.Controls.TextBox)elementHost.Child;
var text = wpfTextBox.Text;
Have a look at http://msdn.microsoft.com/en-us/library/ms742215.aspx, which describes how to send data back to the WinForms host application.
Related
I have a query in windows. forms I am new to this.
I have developed a form where users can open any website from it and upon right click of any element I am displaying the element name, id, and few attribute values in a data grid. For this, I have used webbrowser control.
However, I was facing some errors for a few of the sites so I tried to move to webview2. But here comes the issue
Earlier I used to get the element using the below code
HtmlElement element = webbrowser1.Document.GetElementFromPoint(e.ClientMousePosition);
But now I am unable to retrieve an element by using webview2.
Can someone please help me with this?
You will need to use JavaScript. You will need async methods.
Then, you can get the element by passing a javeScript string.
Point p = e.ClientMousePosition;
string jElement = await webBrowser1.ExecuteScriptAsync($"document.elementFromPoint({p.X},{p.Y})");
The result is JSON. You will need to parse the result to get the element name.
I am trying to figure out the same thing.
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 am busy developing a WinRT Application.
I want to access the value of RichEditBox defined in page BasicPage1.xaml into the code behind the page BasicPage2.xaml i.e in BasicPage2.xaml.cs?
Is there anyway to get the value of the RichEditBox(defined in BasicPage1.xaml) in BasicPage2.xaml.cs ?
Thanks in anticipation.
Are you familiar with MVVM? Basically the idea is to not rely to much on the control layer for business data, instead share these information on another layer, in this case the model or view model.
So lets say you want to want to load a project and have a dialog with a textbox containing the path to a project, which the user can modify. So you would store the path in a model called ProjectInformation, this object you can now pass to other views (to be more precise, view models and then views) and use the data there. The important part here is lifetime, your model propably lives much longer than your view, so the data is stored and reused in the places where its necessary.
A simple way to do this is to give your textbox a name in the XAML and then access that textbox via the name in the code behind.
<TextBox Name="myTextBox"/>
then in the code behind you can do this
myTextBox.Text = "blah";
A better way is to use binding so that updating the textbox automatically updates the property you are bound to. Have a look at this post textbox binding example
For a rich edit textbox you should be able to do this:
set
myTextBox.Document.SetText(Windows.UI.Text.TextSetOptions.None, "Here is text");
get
string value = string.Empty;
myTextBox.Document.GetText(Windows.UI.Text.TextGetOptions.AdjustCrlf, out value);
See this post for more information
Do you need to send it through when navigating to the other page? Then you can do it like this:
this.Frame.Navigate(typeof(BasicPage2),textbox.Text);
and at the BasicPage2.xaml.cs:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var textbox= e.Parameter;
...
}
But i also highly recommend using MVVM in your application. With MVVMLight you can implement this quite easy and quick.
My app written in c# (winforms) launches a third party using Process.start().
After launch, I need to fill in some information in Search Textbox of Third party app. So how to identify the textbox of thirdpaty app? how to fill info in it?
Any clue or guidance? Keywords to search for?
You can do this using the UI Automation Library.
Using either UISPY.exe of Inspect.exe find the automationid , name etc any
parameter that can uniquely indentify the TextBox. One you have done this
you can do something like this, assuming you know the automation id.
string automationId = "ThirdyPartBox";
string newTextBoxValue = "foobar";
var condition = new PropertyCondition(AutomationElement.AutomationIdProperty, automationId);
var textBox = AutomationElement.RootElement.FindFirst(TreeScope.SubTree , condition);
ValuePattern vPattern = (ValuePattern)textBox.GetCurrentPattern(ValuePattern.Pattern);
vPattern.SetValue(newTextBoxValue);
Maybe the textbox is not uniquely identifiable by itself , you can use conditions like process id , parent container id etc to pin point it.
To Click a Button. Find the automation element first using a condition of your choice and then
InvokePattern clickButton = (InvokePattern)buttonElement.GetCurrentPattern(InvokePattern.Pattern);
clickButton.Invoke();
I got this Text box with default value as "First Name" ..Now when I click inside this text box to enter name , this value "First Name" keeps on displaying. What I want is to the text box to clear as soon as I click inside it. What property do I need to set in mt textbox tag ?
[Edit]
ok anything from Telerik that I can use to do that ?
There is not out of the box functionality in TextBox that will accomplish this, but the ASP.Net Ajax Toolkit has a Watermark Extender that will do everything you want.
I have used both, but now personally use a jQuery Watermark Plugin
Either will work just fine, choose based on your needs.
According to the Telerik docs you just have to set the EmptyMessage property on their TextBox control. Demo Page Here
In the code behind, on Page Load you can add the following code to achieve this
TextBox1.Attributes.Add("onClick", "javascript:if(this.value=='First Name'){this.value='';}");
You can use the method suggested by #Josh. If you do not want to use Ajax Toolkit controls or JQuery you could write it on your own using Javascript. Write a function which gets called when the foucs is received by the textbox control. I thik the function is called onfocus or just focus in Javascript.
Hi I just wrote this small function which will achieve your desired result
function clearInputBox(x,prefil){
if(x.value == prefil){
x.value = '';
}
}
Your input box looks like this
<input type='text' value='First Name' onfocus="clearInputBox(this,'First Name')" />
May be this will help you
Taking Shobans advice one step farther, you could add something like this to your Page subclass
protected override void OnInitComplete(EventArgs e)
{
string jsString = "javascript:if(this.value=='" + TextBox1.Text + "'){this.value='';}";
TextBox1.Attributes.Add("onFocus", jsString);
base.OnInitComplete(e);
}
What this will do is, it will always consider that default string is the one this controll contains at esign time (the initial one in your .aspx file), so you wont have to manually change it in codebehind every time you change your .aspx. Remember, that OnIinitComplete fires before any viewstate or postback data has been applied, but after the controlls on your page have been set to their default values.
P.S. As anishMarokey pointed, use onFocus vs onClick, since fields can gain focus without clicks via Tab key.