I have a form with a drop down combo box and a list view. The user selects a date from the combo box and then they are to select an item from the list view. I want to ensure that the user has selected a date from the combo box before processing the information from the selection in the list view.
If cboYEARMONTH.SelectedItem = Nothing Then MessageBox.Show("Please Select a Year Month")
I have 2 combo boxes. One is in a form called subcat_selector.vb
on the button Pick Sub Catagory.click event it shows the subcat_selector form. form there, the onload event:
Dim button As DialogResult
[Code].....
I am creating the items in a combobox in my code behind. I am setting the display member and the value member. When the user makes a selection from the combo box, I need to get the value of the selected item. I have written some code, but when I step through it, it says that the selectedvalue is Nothing.
Here is the code where I am creating the items in the combo box:
Do While drReader.Read
cboTheater.Items.Add(drReader("TheaterDesc"))
cboTheater.ValueMember = CStr(drReader("TheaterID"))
cboTheater.DisplayMember = CStr(drReader("TheaterDesc"))
Loop
In the selected index change event for the combo box, I am doing the following:
Dim strTheater As String
strTheater = CStr(cboTheater.SelectedValue)
When I step thru the code, strTheater is Nothing
I have a simple web for that has a dropdown list and a button on the form.The dropdown list is bound to a table in my database and holds three values with idents between 1 and 3 (Weekly,Monthly, Please Select).I have set my datasource to pull back item 3 (Please Select) as the first item in the dropdown list to prompt the user to select an option. Items 1 & 2 have data assigned to them and this pulls back the relevent data for these options.
Here is my problem. I need to hide my button when the page loads until the user selects item 1 or 2 and would like the button to be hidden of option 3 is selected. I have tried to complete this in my page load event and the code for the dropdown list but i cannot seem to get this to work.
If IsNumeric(DropDownList1.SelectedValue) = 3 Then
btnAddAgendaTemplate.Visible = False
End If
I have a media browser program I am building. I am trying to use drag/drop so a user can drag media tracks from one listview to another listview and then use the second list view as a playlist in windows media player com object. Reading at MSDN I have found out that there is no built in support for item re-ordering with the listview control. I have listview1 working correctly but when I try to reorder items in listview2, the dragged item ends up at the end of the list. So basically I need to get the item insertion index corrected. I have tried more than 10 times to get this code right.
Here is my code which includes a form with two listview's.
Public Class Form1
Private Sub ListView_ItemDrag(ByVal sender As Object, ByVal e As _
System.Windows.Forms.ItemDragEventArgs) Handles ListView1.ItemDrag, _
ListView2.ItemDrag
[CODE]...
I am creating a program that allows a user to view a list of foods in a combo box, add that food unto a list box, and adds all of the calories of that food together. When the user highlights their select food, the program automatically shows the amount of calories for that particular food in a text box. The program is getting the food and calorie information from an access database. I managed to get all of the food calories to add up properly, however, I ran into a problem. Sometimes, well, most of the time, when I select certain foods from the combo box, the program automatically reselects another random food, usually a food that begins with either an A, B, or C. Also, the other random food that the program chooses usually has the same amount of calories as the food I originally wanted to choose. I have over 6,000 items in the database. I don't understand why this is happening. This is what my code looks like for the button that adds each food to the list box:
Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
Foods_Selected.Items.Add(ComboBox1.Text)
Static i As Single
[CODE]...
And this is what my code looks like for the button that adds all of the foods together:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim x As Single
Dim TotalCalories As Single
[CODE]...
I have no idea what to try. It's like the program just skips over random foods, even though all of the information for them is in the database.
I have a ListView with the Activation property with HotTracking. There appears to be about a 2 second delay between when the user clicks the item and the event fires. Is there a way to get the event to fire immediately upon the user click?
View 2 RepliesI use vb.net express 2010. I have tried to find a way to add an EULA to my project but have not found it (nor any solutions online).
does express have the ability to add an EULA?also is there a way to get the setup file to move the database into a particular area OR have it make a new database where the user selects?
I need to ensure that the user can only click the button (to acknowledge the message) and not do anything else (like clicking another button). How can I do that?
View 2 RepliesI have a form on which the user selects a file using an openFileDialog. The selected filepath is then processed, which may take 10-20 seconds before the user is presented with the results.I'm finding that the once the user selects the file (clicking the OK button on the openFileDialog), the openFileDialog remains open until all of the processing going on in the background is completed. Once the processing has finished the openFileDialog disappears and the results are shown.The problem is that whilst the openFileDialog remains open on screen, it is not apparent to the user that anything is happening in the background. I do actually have a textbox which updates the user with messages showing the progress. However the openFileDialog hides the messages until it closes, essentially making the progress messages useless.What I'm trying to do is have the openFileDialog close immediately that the user selects a file. Then the processing can continue without the openFileDialog obscuring my form.
View 5 RepliesHow would you be able to Capture the Value of a Cell when the User Selects a Row?
View 7 Repliesi have created a comboBox and want to set it so when a user selects option1 from the drop down list. a Text box populates with text for the user to see.
View 5 RepliesI am not sure what the heck I am doing wrong. I would like if when the user selects no, then the app setting is nothing. By nothing I mean nothing, I am using "Nothing" to test but its not working it returns whatever is in the richtextbox
This is in my formclosing event
Dim msg As String = "Do you want to save your comments?"
MessageBox.Show(msg, "Save", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If DialogResult = Windows.Forms.DialogResult.Yes Then
[CODE]...
How do I make it so that after the user selects a program it gets executed?Also can I the the OpenFileDialog1 to anything else?
View 13 RepliesI'm trying to assign a number from a row the user selects in a DataGridView to a textbox. On the dgvProducts_CellContentClick event I wish to take whats in column(6) to a textbox.
[Code]...
In my datagridview, I want to be able to change the value of comboBox1 depending on what the user selects in comboBox2
I had this working correctly, however if I move onto a new line in my gridview and select a different value in the second row it changes the previous row also. For instance, on Row1, if comboBox1 = A, combox2 = B
Then on Row2, if comBox1 = Y, comboBox2 = Z
However, when I change Row1, Row2 is also changed to reflect what was chosen in Row1. Is there a way I can tailor it to each specific row?
i am trying to design and code a simple help desk program. i would like it to send the details that the user selects and types from the form i have designed (see picture) and also to send the username, computer name, servername and a copy of the windows event log for the previous 15 minutes, to a designated email address in pretend I.T. department.
View 4 RepliesI have a combo box and use the SelectedIndexChanged event. I noticed when I assign a value to the combo box that this event fires even though the user does not click on the control. Can you tell me how to test for when the user clicks on it and actually selects a value from it?
View 19 RepliesI am populating text boxes when a user selects a company name from the cbo box. When I make the first selection everything looks good, but when i make another selection the text boxes do not clear and repopulate with the new values. Here is the code in the selected index change event.
[Code]...
I have a datagridview that is filled by a query in the dataabse via the DataSource property.What I want to retrieve some infomation from the record that a user selects in the DataGridView. How do I do that? i've been looking for some time now but I can;t figure it out.
View 6 RepliesI have a field called "payor" where the user selectes either "All, Medicare, Managed care" from a drop down list. I am sending the value of payor to the Fill query once the user selects the one they want.
I have no problem with coding 'Where (payor = @payor) if the user doesn't pick ALL, but what code do I need to include ALL records if the user selects "ALL" in the where statement?
I am working on cinema booking system project in vb.net..I have to book seats in the cinema..I have created a file for seat reservation for every movie..The seating is such that there are 18 seats and in the file have written 0s and 1s indicating reserved and vacant seats respectively..User selects a movie from a combobox and the corresponding file opens..We have to change the color of those seats which are already booked to red.Here is my code but it doesnt work..
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles movies.SelectedIndexChanged Dim Seat As Button() = New Button() {Form4.Button1, Form4.Button2, Form4.Button3, Form4.Button4, Form4.Button5, Form4.Button6, Form4.Button7, Form4.Button8, Form4.Button9, Form4.Button10, Form4.Button11, Form4.Button12, Form4.Button13, Form4.Button14, Form4.Button15, Form4.Button16, Form4.Button17, Form4.Button18}
[Code]...
I am using a Message box with buttons Yes/No. If the user selects a quantity of Dogs a Messagebox is displayed asking if all the dogs have been vaccinated. If the user says yes I want them to be able to proceed. If the user selects No I want the number in the combo box to delete and go back to zero.My code for the button selected is this:
Dim button As DialogResult If button = Windows.Forms.DialogResult.Yes Then btnCalculate.Focus()
End If
If button = Windows.Forms.DialogResult.No Then
[Code]...
how do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box. i have this code for now but it does not work
[Code]...
I'm trying to create a for loop that will display the values (favorite programming languages) a user selects for a listbox.
So far I have this:
Dim selectedLanguages As String = ""
For intLoopIndex As Integer = 0 To languageListBox.Items.Count - 1
[code]....
So far, no matter how many items they select it will display a comma even if only one item is selected, example "C#,"However this is what I need it to do:
1. If the user selects one programming language than it should just printout the selected course with a period right after it. Example: C#.
2. If the user selects two languages it needs to have the text "and" between them followed by a period. Example: VisualBasic.Net and C#.
3. If the user selects three or more languages it needs to seperate them like this for example (again with a period at the end): VisualBasic.Net, C#, and Asp.net.
I'm in the process of adapting a current program that I've created to automate it. **Current State***User selects an excel file and the contents are loaded into a DataGrid User can select which environment to run their query against (stage/prod) Program completes processing and updates datagrid with new values User can export datagrid to excel What I'd like to do is centralize the program on one computer and have it monitor a network folder for creation of a specific file type (*.xls or *.xlsx). If one of these is created in that folder then I want to add that file to a queue for processing. Once done processing I want to send the results as an attachment to an email to the user that created the file. After a file is processed I would like to remove it from that folder as well (into a diff folder of completed items).
[Code]...
I'm using Microsoft Visual Basic 2008 Express Edition. I have a Folder Dialog Browser added in my form and I call it when the user presses a button. The folder path string is stored in a string variable and displayed as text in a text box. (maybe I should use a combo box)
My question is: If the user inputs by hand a non existent path, how do I return an error message, stop the file creation into the invalid path, and return to my main form?
It's probably the most basic of things, but all I can find is how to launch a program, and not with the interactions I desire. Any tips as to the terms to use to search for answers, or links to topics regarding questions similar to mine, would be very appreciated. I have a wealth of info to read through, but I could use your knowledge to save myself time.Here is what I am trying to do:
Use a Button (A) to Launch a Prompt where User Selects Directory Path to an executable Program. The Selection is to be Persistent after the initial selection (saved in a settings file i assume?), and the Selected Path (or just "programname.exe") is to be Displayed in a Text Field (B). Launch Selected and Indicated Program via a Launch Button (C)
I am making a minor basket system which the user selects a number of products from a datagrid and it adds them to a basket using an array list (arrItemID).However on the ViewBasket form I want another datagrid however a query is formed listing the selected products. Though the datagrid seems to be empty (though the query when outputted to a text box is ideal. [code]
View 3 RepliesCODE:
I need to take user input, validate to ensure there's no negative numbers and display monthly fee and check fee in a Label.....with a calculate button_Click