I have a webbrowser in my vb.net application and I would like to enter text into a textbox on a site. When button 1 is clicked, it programmatically finds the text box and types the message in.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
SendKeys.Send("{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}{TAB}")
SendKeys.Send("The text I want to send to the control.")
End Sub
End Class
However, it doesn't work. The tab keys do get the curser in the right place but when the text is pasted in the application crashes. Whats gone wrong?
To send keys to WebBrowser, get WebBrowser focus and later SendKeys. Use the following code:
Me.WebBrowser1.Document.Body.Focus()
System.Windows.Forms.SendKeys.Send("...") 'Whatever keys combination you want
Since you are using a webbrowser control, you can access the element by name. For example, this will put text into Google's search box and then click the Google Search button:
WebBrowser1.Document.All("q").SetAttribute("Value", "Text value.")
WebBrowser1.Document.All("btnK").InvokeMember("click")
Related
VB.net .. Currently I have two controls, one richtextbox and a textbox. The RTB is readonly, and also HideSelection is set to false.
The textbox is generic, it allows for input (to send data).
I want to be able to select things in the richtextbox without losing focus in the textbox. There is a client called 'mushclient' that does this, and it works pretty well. The text is still selected, but it doesn't lose the focus on the chatbar to type in.
I don't exactly know however how to prevent 'focus' though. At the moment it breaks flow when you are in game but want to copy something, you'll have to click the textbox again to start typing again. I understand I could setfocus after clicking the RTB, but this feels overall a bit odd. I was wondering if there is a more elegant solution.
Thanks!
This seems to work well for me. The TextBox does loose focus, but as soon as the Mouse_UP event fires, the selected text is copied to the clipboard and focus is sent back to the text box.
Public Class Form1
Dim LostFocusControl As Control
Private Sub RichTextBox1_MouseUp(sender As Object, e As MouseEventArgs) Handles RichTextBox1.MouseUp
If RichTextBox1.SelectedText.Length > 0 Then
Clipboard.SetText(RichTextBox1.SelectedText)
End If
If Not IsNothing(LostFocusControl) Then
LostFocusControl.Focus()
End If
End Sub
Private Sub ControlLostFocus(sender As Object, e As EventArgs) Handles TextBox1.LostFocus
LostFocusControl = Sender
End Sub
End Class
The code is a bit longer than it could be, but this makes it easier if later on you want to change the control that focus is returned to. To change the control that you want to return focus to, just change the name of the control that the handler is subscribed to e.g
Change
Private Sub ControlLostFocus(sender As Object, e As EventArgs) Handles TextBox1.LostFocus
To
Private Sub ControlLostFocus(sender As Object, e As EventArgs) Handles Listbox1.LostFocus
or whatever the name of the control is that you want to return focus to.
How can I get a variable in one xaml(when the button is clicked) to appear in another xaml in a textbox.
Basically once the button is clicked in Menu.xaml the name variable is displayed in a text box in Basket.xaml. How can I go about doing that?
Button in Menu.xaml
Private Sub VanButton_Click(sender As Object, e As RoutedEventArgs) Handles VanButton.Click
Dim Name As String = "Vanilla"
End Sub
Variable Name into Basket.xaml textbox once button is clicked in Menu.xaml
Private Sub IcecreamChosen_TextChanged(sender As Object, e As TextChangedEventArgs) Handles IcecreamChosen.TextChanged
End Sub
The app is developed in VB.NET , Visual Studios 2015. I am new to this and have no idea on how to make it work this way.
You have to give a name to your textbox and the in the button click event handle you can write yourtextboxname.Text = variabile
Anyway I suggest you to start using databinding approach. Xaml is databinding based! :)
i am making vb.net application in which there are 10 textbox in which i am changing background color when it got focus and lost focus. and adding validation number or character only. is there any way i can set or add custom code that every textbox added in form change color on got focus and lost focus and can assign textbox validation number only, alphanumeric. i don't want to add code on every event on keypress , gotfocus and lostfoucs. i just want to set it as default property of text box
here is my code
Private Sub txtProductDescc_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtProductDescc.GotFocus
txtProductDescc.BackColor = interfaceDesign.gotFocusTxtColor
End Sub
Private Sub txtProductDescc_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtProductDescc.LostFocus
txtProductDescc.BackColor = interfaceDesign.lostFocusTxtColor
End Sub
One way, which I am using myself often, is to make an array of textboxes. This way they all share the same "code" for every event and you can select them by index if you need to address a specific item.
Updated
You can also capture key events on the main form:
C# capture main form keyboard events
How do I capture Keys.F1 regardless of the focused control on a form?
I write this code for tab-like behavior when user presses ENTER on textboxes for every form, which works fine.
If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
SendKeys.Send("{TAB}")
e.Handled = True
End If
However, I need to write the code once, perhaps as a sub or function in a module so that I do not have to write the same for every form. I have checked various forums including
Detecting Enter keypress on VB.NET and
Tab Key Functionality Using Enter Key in VB.Net
BUT all I get is either to write code for each textbox or for every individual form.
Has anyone tried out a single code for ALL or may be several selected forms of the application? If yes, please share with me. Writing for every form still works fine for me but i need to take advantage of OOP. Thanks
There are many ways to implement this, one of those is to create a custom textbox User Control
Adding a control to your project is very easy just right click in your project in the solution explorer ->Add->User Control
Give a name to your control ex. "tabedtextbox"
Add a textbox control to your User Control
Place the code in the keypress event of textbox1 of the UserControl
Private Sub TextBox1_KeyPress(sender As Object, e As KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
SendKeys.Send("{TAB}")
e.Handled = True
End If
End Sub
Compile once in order to update the whole project with the new user control.
Goto to your form and add your new User Control, you can locate it at the Toolbox panel.
Run your program and you will see the behavior of TAB when you press enter on each textbox.
If You wish to allow the user to press enter in a TextBox, instead of pressing a specific button,
you can use the acceptbutton property.
One good way to use it, is to change the property, on the Enter and Leave events of the TextBox. That you call Click event of the Button, when User press Enter inside the TextBox.
Try this code:
Private Sub tbProject_Enter(sender As Object, e As EventArgs) Handles tbProject.Enter
Me.AcceptButton = bSearch
End Sub
Private Sub tbProject_Leave(sender As Object, e As EventArgs) Handles tbProject.Leave
Me.AcceptButton = Nothing
End Sub
Private Sub bSearch_Click(sender As Object, e As EventArgs) Handles bSearch.Click
'.... actions to perfom
End Sub
Screen
is there a way to disable a textbox in code only when an even is triggered?
for example, a textbox wants user to enter an initial amount of money in a textbox. After the calculate button is clicked, make the textbox not editable.
im a beginner and my textbook doesnt mention it.
To disable textbox on button click
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Enabled = False
End Sub
To make it Read Only
TextBox1.ReadOnly = True
The difference between Enabled and ReadOnly is :
Readonly allows the user to set focus to and select and copy the text but not modify it.
A disabled TextBox does not allow any interaction whatsoever.
Use ReadOnly when you have data that you want the user to see and copy, but not modify. Use a disabled textbox, when the data you are displaying is not applicable in for the current state of a dialog or window.