I have two comboBoxes: cB1 and cB2. Depending on the values I have selected in both comboBoxes, another value puts in a third comboBox called cB3. But if the combination of selected values between cb1 and cb2 don`t give any value in the third combo, first of all It has to appear a MsgBox advicing to the user of this situation, and secondly, I want that the execution thread of the application could be pause /stopped for the user could choose any value selected manually of cB3.
This last action is the problem because I am not able to stop/pause the execution until the user can select the value, and the code after this point is executed and gives me a Nullreference error.
In my VB.net solution I have a form in which I have to choose a beginstation and an endstation. I have to select both from comboboxes. Now what I want is that when I choose a beginstation, the chosen station will be gone in the combobox of the endstation so that I can't pick the same endstation as the beginstation.Is there a way to do this? I've tried a lot with SQL and LINQ queries but it didn't work out :(
I have a problem keeping a selected value in a combox. I select a row in a datagrid and load another form, based on this selection the form and combobox is prefilled with data. When I close this form it sets the selected value on the combobox back to 0 and gives me an error 'There is no row at position 0', how can I maintain the initial selected value to work around this error
I typed and change few times. Now I am staring with mind blank...I am totally stuck... I am trying to figure out how to add up the grades that has been selected from the combobox. I am not givin up.
Private Sub btnCalcu_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCalcu.Click Dim intHourOne As Integer Dim intHourTwo As Integer Dim intHourThree As Integer
I am having a problem with using a value from a selected item in combo box. While debugging using breakpoints I can see that the combo box is working fine. The problem is I need use the selected value of the text box in HeatTransmissionCoefficientforAsinglePipeCalculation function and while debugging I saw that ThermalResistanceofTheInsulation, ThermalResistanceOfTheCarrierPipe, ThermalResistanceofTheJacketPipe all have a value of 0 when this is not the case...
This is what happens when use clicks ok: Public Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click ' 1. Check if Metric or Imperial Units are selected. ' 2. Convert Entered Variables to opposite unit. ' 3. Determine what type of pipe is selected. ' 4. Determine what type of casing is selected. [Code] .....
I am working on WPF application. I have a window which has "Combobox" and "Textboxes". Well,I want to display the selected combobox values in textbox. (Combo Box displays the concatenated string firstname+lastname+initials).But I have two text box for firstname & second name. I want to display only "firstname" in first text box and "last name" in second text box.I wrote the below code. IT displays the values but concatenated. IS there any way I can just display first name in first text box and last name in second text box.
I have a combobox with whose contents get populated via code. Works ok. But When I select something in the list and hit 'OK' it always returns as: nothing, "", or -1 (tried with .selectedValue, .SelectedText, and .SelectedIndex respectively)
Question is, How do you access the text in a ComboBox's selected Value??
I set combobox.datasource to a dataview item (so that it binds to a table), When I get return value from combobox.selectedvalue. Error was returned bcos it is of type"system.data.datarowview" I don't know why commonly its return value as text
The code : If ldstList.Tables(0).Rows.Count <> 0 Then With CbStatus
I have a combo box that's populated with 4 or 5 items, when you select the item, it shows in the combobox and is highlighted. How do I get it to show without being highlighted?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load CBgrocerys.Text = "Select an item...." Dim item() As String = {"apples", "oranges>", _ "pears", "plums"}
I have combobox, listbox and textbox. Combobox has datasource datamember values assigned i would like to select a customer from a combobox and save the datarow based on that selected value to an array it could be a list or whatever created in memory as variable and this will be my listview Datasource. I understand within that current row there is ID value which is interger.[code]...
I have a combobox which is filled with items from a table like this: [Code] What Im trying to do is to when I choose one name from the dropdown list the firstname shall go to one textbox1 and lastname go to textbox2. One way doing this may be to use the ID column wich is the the Primary Key. And do a new search in a button with that ID which fills the textboxes. But how can I get just a portion of the selected string in the combobox to a string so I can do a search on it.
I use a webbrowser in my application named Webbrowser1.In one part of my project i need to know what is the value of a selected item of the combobox in the wbbrowser.For example i have a HTML Like this
get selected value from database and input this value to combobox. [code] when I run this program . in combobox 1 just have 1 value.in database I have some value.
I had a combobox which is generating auto number from DB. i need to get data automatically to the ramain ing textbox , if i select a no from combo.[code]...
ok well i have to make a unit converter that when say kilometers is chosen it converts it to miles. However when i chose kilometers it seems my if statment isnt made properly so the program does not do what i want it to do.to make the if statment say that when i chose kilometer from the combobox make txtTo.text = "A". here is my code: i hope i make sense....
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Partial Class Lab3 Inherits System.Windows.Forms.Form
I am writing a program that is connection to an oracle database using the tableadapter method. I am populating a drop down list with a distinct set of values. I am then wanting to display the item that user selects in a text box. However, instead of the desired result being displayed the text box is returning system.data.datarowview.
In the form, I have 6 textbox and a combobox. What I am doing is that when the form is run, the user have to insert the particulars in each of the textbox and select the items that have in the combobox and it will stored in the database.Here is the code that I am using. For the combobox, I am not quite sure so could anyone help me? What I mean is help me with the combobox part.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click conn.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = G:MajorProjectFileProjectSampleUser.mdb" sql = "SELECT * FROM customer" da = New OleDb.OleDbDataAdapter(Sql, conn)
I am having datagridview in that I have datagridview combobox column and noraml textfield. I want to know that how can I load selected value in that combox box when I am loading all entered details in data grid view.
In Silverlight 4, I have a combobox which is binded with a list of State objects( which has StateId, StateCode,StateName properties) and i am showing StateName as the options of combobox. Now i want to select the option "Michigan" which is stored in a string variable called "strSelectedState". How do i do this ? I tried setting SelectedValuePath property as strSelectedState. But doesn't work.
I am trying to update my database based on the selected values in two comboboxes.
Combobox1 = Manufacturers Combobox2 = Orderlists
In the App the user selects a manufacturer and then an orderlist and then presses Ok button which updates the default orderlist for the manufacturer.I am having problems on buttonClick event which updates the data, just unsure of method, if somebody could even point me towards a good tutorial it would be great as I have searched high and low for one.
Code is as follows....
Imports System.Data Imports System.Data.SqlClient Public Class frmMain
I am trying to bind my combobox selected value something like: Me.combobox1.SelectedValue = Me.BindingSource8.Item("ColumnName") The column has a numerical value
im having a problem regard combobox selected index.the combobox wont change its index when i type a text that is the same with one of the items and pressing tab. when i check its selected index its -1. ill give an example to make it simple..combobox items = AB, AC, AD i entered "AB" by simply typing it not by selecting in the dropdown.its index is -1, how can i make the index the same with the items in the drop down?
