I am new to Win Forms, I have a scenario here..
When User enter ID in a textbox, I want to check that value in database and get the name for that ID before submitting the Submit Button.
In webforms it can be done using OnFoucs and OnBlur events but how can I do here before submitting the button.
I am using .NET 1.1
Regards
SBMARYA
I am able to do it using Leave Event of the TextBox control.
Private Sub txtID_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtID.Leave
End Sub
Thanks
sbmarya
Related
I'd like to create sample applications, like examination system. I don't know how to connect radio button and textbox to create multiple choices in this system. So can anyone can tell me how to connect radiobutton and textbox to create multiple choices?
If i understand your question correctly:
Radio buttons have 'text' property, you can put your description there.
Next, this code should place this Text description in TextBox after clicking this particular RadioButton:
Private Sub RadioButton_CheckedChanged(sender As Object, e As EventArgs) Handles RadioButton.CheckedChanged
TextBox.ext = RadioButton.text
End Sub
If not, you can always look for answer here:
https://www.tutorialspoint.com/vb.net/vb.net_radio_button.htm
I'm trying to change a textbox text dynamically from another textbox and When i'm writing in the first textbox, the text that i'm writing must appare in the second textbox. but here problem is that i have not contain id or name destination text box Please help!and i have work in vb.net using vs2010
Welcome to StackOverflow. I will assume you're a complete newbie and will try to be as comprehensive as possible.
Right click on the first text box and choose properties. Go to the first property: (Name). This will give you the name of that text box. Now do the same for the second text box. Now, double click on the first text box. You will see two dropdown lists on top of your code window. The one on the left stores controls like textbox, form, etc., and one on the right shows the properties of the control. Select second textbox name from the first dropdown list and select TextChanged from the second dropdown list. You will get something like this:
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
End Sub
Now add this to the above subroutine:
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
TextBox2.Text = TextBox1.Text
End Sub
I am assuming that your first textbox's name is TextBox1 and second textbox's name is TextBox2. These might be different in your code.
For more details about events, properties, and functions, I recommend you read this article: http://msdn.microsoft.com/en-us/library/ms172576(v=vs.90).aspx. That article is based on Visual Studio 2008 but it is equally applicable for Visual Studio 2010 as well. You will also find additional references and samples on the MSDN Visual Basic site: http://msdn.microsoft.com/en-us/library/vstudio/2x7h1hfk.aspx
Change TextBox1 and TextBox2 with the names of your textboxes:
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) _
Handles TextBox1.TextChanged
TextBox2.Text = TextBox1.Text
End Sub
I believe there is a radio button list control while developing web pages using asp.net but not while developing a windows form.
I am developing a windows form where I need to check the user's gender, weather male or female.
Right now I am setting a global check variable and set it when the button is selected like shown below.
I have placed them within a panel:
Private Sub rbtMale_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles rbtMale.CheckedChanged
gender = "Male"
End Sub
Private Sub rbtFemale_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles rbtFemale.CheckedChanged
gender = "Female"
End Sub
Is there any other better way of doing this check?
You need to create a group using container control (Panel or GroupBox). Add Radio buttons inside the container so when the user selects one radio button within a group, the others clear automatically.
You mean like this one?
Radio Buttons are available in WinForms.
I want to disable a combo box dropdown list from showing in VB.NET and then enable it. How can I do this? The default value of the cbo box should be enabled for typing.
Thanks
After Searching for same to disable combo box in vb .net cant find good answer which help...
so i tried some thing like this
1st thing to do while disabling
combobox1.enabled=false
combobox1.beginupdate
2nd thing to do while enabling
combobox1.enabled=true
combobox1.endupdate
its looks simple and i dont found any problem but i have doubt may it effect any excecution speen or other object
I want to disable a combo box dropdown list from showing in VB.NET and then enable it.
Ok, use the .Visible property....
The default value of the cbo box should be enabled for typing
Oh.... then.
The bad news.
You can't.
The good news.
You simply put a textbox on top of the combobox. When the dropdown should be disable, make the combobox invisible and show the textbox.
'Goodbye Combo
Private Sub HideComboButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles HideComboButton.Click
comboBox.Visible = False
txtBox.Visible = True
End Sub
'Hello Combo
Private Sub ShowComboButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ShowComboButton.Click
comboBox.Visible = True
txtBox.Visible = False
End Sub
Try using the Enabled method eg comboBox1.Enabled = False Tellme how that works out for you
Try using dropdownstyle, simple can be used to remove list by manually closing the list in designer, then u can switch between dropdown and simple to achieve what you need.
When we click on drop down combobox control in our windows form, it shows the list automatically.
But when we press tab and navigate to that control from keyboard it doesn't shows the list automatically. So in other to show the list automatically on receiving focus what should be done?
Set the DroppedDown property of the combobox equal to true.
Private Sub myComboBox_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles myComboBox.GotFocus
myComboBox.DroppedDown= true
End Sub
I would like to mention on thing here.
I used Enter event to show Drop down list with DroppedDown=true,
But When I type something in text area of combobox and if i leave the area to next control, entered text is lost.
My combobox is databound.