Check Text Entered In Combobox Against The Dropdownlist Generated?
Jan 15, 2009
I have an windows mobile application. In the windows form of it, I have a combo box.I load the values in the combobox on frm_load event.Now we all know what the combo box has the facility that it allows to enter text as well as chose from the dropdown.So when they enter the text, I want to validate it against the list that is in it.If not then msbox error.
My loading of the combo box is here.
Private Sub mainfrm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim con As New SqlConnection("XXXX")
Try
[code]....
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Aug 11, 2010
I have an application that uses the editable dropdown combobox (comboboxstyle.dropdown)
But when I run the application, whenever I entered a new value that is not in the list, it disapears when i focus to other cells.
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Jan 7, 2009
I this application, I am retirving data to fill combo box from database.There is a search buttom next to it which takes that selected and search in database and retieve other data related to it.Now in the combo box, one can also enter data (textfield too).So if the person enters wrong things, I want to display a message that " Incorrect value"
My code for the onclick_search is as follows:
Private Sub btn_cylsearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_cylsearch.Click
[code].....
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Jul 15, 2010
is there a flag i can call to validate the text entered in to a databound combobox?
My situation is that i have a combobox where users can type in whatever they like, but OnLeave i'd like to ensure the value in the combobox is one of the items in the data that its bound to.
i'm avoiding a listbox because the suggest/append creates a nicer interface while they are typing as it shows possible matches.
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Apr 17, 2010
How to check if string entered in a text box matches a field in a data table
I have a form with two text boxes for users to enter their Username and Password. When they enter their details and click the 'Login' button I want their details to be
checked against data in a data table to see if they match or not. I am using an 'if...else' statement but can't work out the syntax to use. My code is as follows[code]...Check when string entered in a text box matches field in data table?
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Nov 18, 2009
I am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
[Code]...
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Apr 17, 2010
How to check if string entered in a text box matches a field in a data table.I have a form with two text boxes for users to enter their Username and Password. When they enter their details and click the 'Login' button I want their details to be checked against data in a data table to see if they match or not. I am using an 'if...else' statement but can't work out the syntax to use. My code is as follows:[code]The fields I want to match the textbox strings against in my database table are called 'Username' and 'Password'.
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Oct 4, 2011
I am creating a Calender application using the monthly calender control.I am trying to implement a search for the calendar so a date can be entered into a text box which intern moves the calender to show the date entered. I have been try to figure this out with no luck, is it even possible to do?
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May 28, 2010
I am using the following method to set a value to ComboBox1 whose dropdown type is set to dropdownlist:
ComboBox1.Items.Clear()
ComboBox1.Items.Insert(0, "ABC")
ComboBox1.SelectedIndex = 0
Is there any other and better way to do it?
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May 20, 2010
I have this code
If ValueTXT.Text.Contains(".") = True Then
Dim r As String = ValueTXT.Text
Dim mv As Integer = ValueTXT.Text.Length - 3
r.Substring(1, mv)
ValueTXT.Text = r
End If
I want to check if there is a 5.00 entered into my value box, if there is i want to remove the .00
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Apr 14, 2012
I have a combo box with four lines of data:
Reina Beatrix Arpt, Aruba, AW (AUA)
Grantley Adams Intl Arpt, Barbados, BB (BGI)
Owen Roberts Arpt, Grand Cayman Island, KY (GCM)
[code].....
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Sep 3, 2009
i create my custom combobox control and i'd like to set DropDownStyle property on DropDownList but it not works correctly. [Code] When i put my custom control in my form i want to see DropDownStyle set to DropDownList and not DropDown as default.
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Feb 27, 2009
What's the difference between Simple, DropDown, and DropDownList in the ComboBox?
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Aug 27, 2009
I have written a function before to delete and update records, but never anything to return values back to my call of the function. Here is my code, and I will try to explain what I'm trying to acheive.
If Not Att1 = "" Then
Attribute1.Text = Att1
Attribute1.Visible = True
ComboBox1.Visible = True
[code]....
That codes goes on up to att20. It works just fine, but it is forever long, and I would like to clean it up.I want to do something like:
Or, should I pass the combobox number also, so that the code can fill the appropriate combobox? Like.comboboxfill(Att1,Combobox1) how to write the function and how to pass back the information or just how to make it work in general?
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May 10, 2010
i have an app that has many suggest append comboboxes in the style of just straight dropdown.
I also clear the text in all of these draopdowns via resettext() in a loop when my user clicks a 'New' button
is there any way to either A:
make the combobox read only (without selecting dropdownlist)
or B:
allow suggest append to fire on all keystrokes instead of only when it sees a match in the combobox....
example: combobox1 contains the following items:
- apples
- oranges
- bananas
as of right now, if my user types in "pears" it won't see any 'P' and won't suggest anything else or even drop down the combobox and allow "Pears" to be entered and because my app does processing only on the items in the list, "pears" then throws an exception....I'm trying to force them to choose only the items in the list and not be allowed to enter anything else while still enjoying the clean look of a resettext() on a combobox
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Nov 13, 2010
How to only check that checkbox which is entered in textbox ? If i have 4 checkboxes eith text checkbox1, checkbox2, checkbox3 and checkbox4 and 1 textbox if i type in textbox 1,2 then only checkbox1 and checkbox2 would be checked again directly after doing that i type 3,4 in textbox then only 3,4 will be checked and 1,2 will be uncheked.. remember i wanna do this coding for unlimited no. of checkboxes .. so dnt provide coding for 4 checkboxes only.
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Oct 5, 2011
I want to check if the value in the text box is EVEN NUMBER.else throw an error mssg.
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Mar 31, 2009
How to validate IpAddress. I mean how to check whether the entered Ip is in correct format?
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Dec 2, 2010
On my form I have 4 Phone Number fields, at least one of them has to have a number entered for contact purposes. I am trying to check and see if at least one is. I declared a form variable;'declare a variable to see if at least 1 phone number has been entered Dim count As Integer = 0..In the text changed event I do this;[code]But when I add a breakpoint as soon as I run the app it says count is 1 on the first phonenumber. What is the error in my logic. Somehow I need to be able to tab through all 4 controls and if they are all empty then let the user know they need to enter at least 1 phone number.
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Sep 1, 2009
i did this code to delete data from the database and update the dropdownlist of the combobox(i.e,remove the deleted data from the dropdownlist of the combobox):
Private Sub Delete_Btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Delete_Btn.Click
Dialog1.ShowDialog()
[Code]....
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May 15, 2011
I would like to disable a specific items from DropDownList. I have below code but it does not working. So, need someone to told me what I'm doing wrong. DropDownList have 5 items.And, I'm getting error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 <> 1 DropDownList1.Items(X).Enabled = False End Sub
But, if I add a different value for X, then it disable 1st and 2nd item. Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 or 1 DropDownList1.Items(X).Enabled = False End Sub My goal is if I would have a 365 items in DropwDownList to disable items for example between 120 and 150.
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Jun 4, 2011
check if the entered data is in the same row inside the table using .net?
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Sep 3, 2009
How do i check if user has entered all inputs and go to the next form.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
t1.Focus()
End Sub
[code]....
In this code it gives an error, but after displaying the error it jumps to next form.
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Jan 6, 2010
I need to do a check on telephone numbers entered into a textbox.I know the regular expression for an email address but not to check a telephone number like such (000)000-0000
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Apr 29, 2011
I have a textbox where a user is supposed to enter a date. How can I check whether the entered date is in the correct date format?
Like this: 02/02/2008
not like this 022/22/-1
not like this 2009/02/02
not like this 02/Jun/2015
not like this 02/abc/2010
(I don't want to use DateTimePicker or MonthCalender).
EDIT 1 I tried it like this
Private Sub txtHireDate_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtHireDate.Validated
Dim dateString As String = txtHireDate.Text
Dim formats As String = "MM/dd/yyyy"
[code]....
But its showing some errors?
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Sep 24, 2009
I am using vb.net. I am having below code in vb.net
[Code]...
Now I want an set validation for mandatoryto the textbox TokenStartingNumberTextBox only If the user had entered the value in DateOfReceivingTextBox.
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Jan 6, 2011
I want to validate a string in a textbox after a period.Lets say that it needs to be ".rad" (whatever). When I enter "radjesh.rad" and press "OK" it should check if the last 4/5/6 (whatever) characters (including period) are in the string. If I'd enter "radjesh" it should fail, but if I'd enter (e.g.) "radjesh.jrkrk" it should work.
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Oct 28, 2009
I have a combo box on my application (working with VB.net) called CmbAttendantstatus. I have sent the dropdownstyle = dropdownlist at the Properties level of the combobox.
There are 200 field types e.g;
Current Attendant
Ever Attendant
Never Attendant etc
The issue is I can only select one from the list, fine, but I want to be able to type the first letter on the combobox and it takes me to the nearest field type rather than looking through the entire drop list. For example I want Never Attendant, I just need to type N and the drop list takes me to anything starting from N and if I add E for example any field starting with NE shows up for selection. Presently, when the dropdownlist is selected you are not allowed to type anything...
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Feb 2, 2011
I am writing a Do Until Loop to check if the number entered in a textbox is between 1 and 12 in Visual Basic 2010.
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Aug 31, 2009
I have a checkbox in my application,when the checkbox is checked then i want to fetch the data from the database and add it to the dropdownlist of the combobox.Again when the checkbox is unchecked then i want to ramove all the data from the dropdownlist of the combobox.
I did this
Private Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
If CheckBox1.Checked = True Then
con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=Etech.mdb")
[CODE]...
When the checkbox is checked then the data is added from the database to the dropdownlist of the combobox but when i uncheck it then the data is not removed from the dropdownlist of the combobox. In the above code i think i need to add an else condition to remove the data from the dropdownlist of the combobox and make it empty when the checkbox is unchecked.......but i cant give the proper else condition in the above code.
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