I'm using the combo box control in VB.It is not bound to a data source.Visual Studio gave me a text box to enter the values for the combo box.When I run the program, there is a blank value?How do I eliminate this blank (or null) combo value? My combo box is a required field.
For example I entered
Option 1
Option 2
Option 3
When the program is ran, the combo box has <blank> (which is selected) Option 1
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am trying trying to write some code for a ComboBox that does the following:
1. Allow the user to enter text into the combo box to type entries contained in the list source.
2. Enable autocomplete to assist the user in selecting entries in the list source, both from dropped down state and non dropped down state.
3. Restrict the user from typing an entry that doesn't exist in the list source.
My requirements are:
1. The ComboBox must run some code after a selection has been made or the user has finished typing an entry (not after the focus has been moved to another control)
2. The code must only run once after the user has made a selection from the combobox or has finished typing an entry
The problem: To achieve the above functionality, I had to run code on numerous event's. Sureley there is a better way, here are the events and the reason for the code:
SelectedIndexChanged:This is the code that is run when the user makes a selection. No Mystery here
KeyDown:
Must Run
If e.KeyCode = Keys.Return Then
ComboBox1_SelectedIndexChanged(Nothing, Nothing)
End If
I am currently working on a program, that you enter certain values/text in and it organises it into a word document automatically,
I found a code online, which has worked a treat, However I'm wondering what lines of code I would need to:
1. Add Bullets or Numbers
2. Add a new line of text (I can add a new paragraph but I don't want a huge space between the two lines)
3. I have around 20 check box's is there a quicker way to check which are selected then write the text in word or do I have to write alot of If Checkbox1.Checked = True then, etc)
I have a function that allows a user to enter numeric vallues and also a period for the decimal points but I also want to allow for users to enter the minus sign to allow users to enter negative values . How would I go about it.
Public Function SingleDecimal(ByVal sender As System.Object, ByVal eChar As Char) As Boolean
Dim chkstr As String = "0123456789."
If chkstr.IndexOf(eChar) > -1 OrElse eChar = vbBack Then
If eChar = "." Then
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I've got some code like the following. I want it so that when I chose an item in 'select 1' it changes the in the second combo box but I'm not sure of the best way to go about it. Does it have to be AJax or can it be done with just Javascript?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
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I have been using the combo Box keypress event to capture the enter key when it is being pressed by the user within the combobox. The combo box style I am using is Drop Down. When there are no items in the combo box list the keypress event will capture the enter key. When I add any items to the list portion of the combo box the keypress event not longer captures the enter key. How do I capture the enter key when the combo box has items in its list.
View 1 RepliesHow to use a databound combo box to display one field in the drop down, and another as the combo box text on roll up? Using VS 2005... For example, I have a datatable that has 2 fields. One called "ShortDesc" and one called "LongDesc". I want to be able to see the "LongDesc" column values in the drop down on the combo box. When I make a selection, I want the text in the combo box to read the corresponding "ShortDesc" value.
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How Do I Make It So You Can Press Enter Instead Of A Go Button In The Website URL Box (Tool Strip Combo Box)? I Am Making A Tabbed Web Browser And The Current Code For The Go Button Is:
View 1 RepliesCreate an application that allows the user to select or enter into a combo box the number of days a person will work, and calculates the total amount of pay she will receive over that period of time. Salary is one penny the first day, two pennies the second day, four pennies the third say, and continuing to double each day.
The combo box must list the following items: 30, 180, 365, and 1000. Must be the default drop down box. Use a validating event procedure on the combo box.
The program should go through a loop once for each day, doubling the number of pennies with each iteration of the loop. You will need a running totl of the number of pennies that you add to with each iteration. To calculate the total amount of pay, multiply the total number of pennies by .01 and show the result in currency format.
Public Class Form1
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
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I have to create a form that I enter the price of gas each month over a year. I enter the price in a text box and click the enter button to send the price to a list box immediatley and use an array. I have the following code but I don't think it's working with the array correctly as it will let me enter the information but doesn't stop letting me enter after the 12 prices. I am really having a hard time trying to figure out how to set up this input for an array and make it all work.
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I am writing a program that basically "encrypts" any text file you put into it. All of my code works perfectly, but I need to know how to replace Enter and Tab values..How do you do this?I tried doing:
s2 = s2.Replace("(Chr(10), "{123}")
But that doesn't work.
I want to Add Values to my combobox in Datareader.This is my code,
Command = New MySqlCommand("SELECT * FROM tableName WHERE id = '" & id & "')
Command.CommandTimeout = 30
dr = Command.ExecuteReader()
If Reader.HasRows = True Then
While Reader.Read()
cmb.Items(dr(0))
End While
End If
I have tried adding it this way but it is not working.
I am familiar with getting a selected value from a combo box but what about if you wanted to get all the values from a combo box then store those values in an array or list. The combo box would be data bound to a source and have an ID as the value member. So How would I get all the values from the combo box.
View 6 RepliesI have a datagridview with 2 columns.What i want is to enter numeric values into 2-nd column and to have the sum of this value in the last row (no matter how many values aka rows i will have). And also how can i have the last row fixed considering further actions.
View 10 RepliesI have a datagridview with 2 columns.What i want is to enter numeric values into 2-nd column and to have the sum of this value in the last row (no matter how many values aka rows i will have). And also how can i have the last row fixed considering further actions.
View 3 RepliesI have two comboboxes in my form (cbAdresse & cbVerwaltung). Choosing the value in the first combo, i get the value from the table into the textbox txtAdID. Now i try to use the value in the txtAdID as the parameter for the SQL command selecting the values from the table (tblVerwaltung). These values must be added to the second combo (cbVerwaltung). So i use the following code for the SQL Compact Client:[code]Using this code i get the following value in my combo cbVerwaltung: "System.Data.DataViewManagerListItemTypeDescriptor".[code]
View 3 RepliesI have a combo box that is tied to a binding source that loads a list of users from a table. Currently the list of users is a List of String object type. When a user selects one of the users from the drop down, a list is filtered down based on the selection. To do that I currently have to requery the User Table to grab the UserID column of the user selected, which seems a bit inefficient to me.
Is there a way that I can assign a custom object with two properties (UserName, UserID) and have only the User Name is displayed and when I have to filter the list, I already have the UserID, so there is no need to requery the database.
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I am working with Vb.net and have a form with a combo Box. On load the form is loaded with one of the following details depending on what is stored in the database; Cancelled, Processed and Failed.
TxtColStage.Items.Add("Cancelled")
TxtColStage.Items.Add("Processed")
TxtColStage.Items.Add("Failed")
Then I have an update button and when the user drops down the list he/she can select between Cancelled/Processed/Failed. I want to be able to grey out or disable Processed and Failed, so that when the user updates the field he/she can ONLY update with the Cancelled option ONLY.
how can i fill two value in combo box . first one for visible and second one for backend(key column) like in vb (Item data)[code]
View 1 RepliesI am trying to get duplicate values from dgv into a combo:
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I am making a program that uses the datagridview control for making the sales invoice and I want to add direct values from textbox control to datagridview. But the problem is I am not getting the row, col index properly and if I use:
dgv.item(0,dgv.rowcount -1).value=textbox1.text
Then the value goes to the 1st col and 1st row. When I use dgv.rows.add() then value goes down to last row of the dgv control.
I am working with Vb.net 2005. I have used Crystal reports in some forms. The Crystal Report on the other hand use parameter field, therefore when you run the application an "enter parameter dialogue box" is loaded.
View 5 RepliesDim number = TextBox1.Text
If number < 1 Or number > 100 Then
MessageBox.Show("You must enter a value between 1 and 100", "Name Entry Error", _
MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Exit Sub
End If
Whenever I enter anything other than a numeric value; the form crashes.
I am sending values from Combobox and Textbox to Access Database in VB.NET.I am phasing the problem when i enter the Duplicate values.In the database one of the column is Indexed.(Yes Duplicates not allow)That column i bind to Textbox("txtperson1").I used the TRY and Catche method to solve the Indexed Problem.when i run the application the value which i enter is not a duplicate that value save on the db. Once i enter the Duplicate value , the message box is showing "The Record alread saved".But After i enter the new value the same message is displaying, it is not saving on the db.
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I am new in programming. And I am coding with VB.Net (VB2008). On my form I have 9 checkboxes. And each of this checkbox when checked is meant to submit a value to a dynamic array. Initially the array was a constant that was declared like these:
Dim Notes() AS integer = {1, 2, 5, 10, 20, 50, 100, 200, 500, 1000}
But I want the array to be dynamic. That is the user of the program is to enter the element of the array. So I decided to use checkboxes. So that if the user of the program checks any of the checkboxes, a particular value or element should be submitted into the array. And the user should be able to check as many checkboxes and have values representing those checkboxes submitted in to the array.
For example: if the user check checkbox1, checkbox2 and checkbox50.
The array should look like these. { 1, 2, 50 }
or if the user check checkbox1000, checkbox200, checkbox10 and checkbox500
Then the array should hold or contain the following integers in this order; {20, 200, 500, 1000}.
That is the array is dynamic and the content/elements of the array and the bound of the array should depend on the checkboxes that is checked. What other means can I used to enter values/elements into a dynamic array during run time.
let me explain further i have table account. in the table are 2 columns namely account_type,Account_name.So on the forms, i want the combo to show the 2 columns even though ony one column would be saved. Am able to do this in access as attached.[code]...
View 5 RepliesI've used VB to connect to Excel and get the titles of the different columns in a spreadsheet. These then display in a drop down combo box for the user to choose from. I'm getting lots of empty values in my combo box because not all the columns in Excel have titles. How would I go about telling it not to display them?
Excuse the easy question but I've only started learning to code a week ago.
Am using a combo box with no of phone numbers .I want to get the phone no one by one in a variable. Now am using the below code to get the combobox values. But still now am getting the following error message System.Data.DataRowView. Please help me to fix this error. am new for vb.net.[code]
View 1 RepliesI have a enum,
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I need put the "text" value of all the above Enum values in to a combo box, how do i do it?
I have A combo box with 5 values in: How would i save all 5 of those values to my file?sw.WriteLine(CustomerIDTextBox.Text + ":" + CustomerFirstNameTextBox.Text + ":" + what????? Once these values are saved how would i go about retreiving them from the file and displaying them back into the Combo box?
View 3 Replies