In a VB.Net application, how can I either: Find the dropDownList selectedIndex position of something just added to a database.Have a form restart with the most recently-added entry showing in the DropDownList, by way of modifying the inline SQL query to display by date/time added
View 3 Repliesvery simply i have a listview that has 3 colums date - filename - url when the selectedindex changes on the list view i want it to be displayed in my picture box.
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I added a few items in the combobox dropdown list at the form load event. [code] At the runtime I dont want to allow the user to write something in the combobox as a text.The user can only select an item from the dropdown list of the combobox.
View 13 RepliesThe idea with this form is to add the futures which is calculated when the button is pushed but I need the list to update every time and show the values each time to which the previous value is added to the new calculation, e.g. of what it should look like in listbox:
Year 1: $1,290.93
Year 2: $2,724.32
Year 3: $4,350.76
etc....
I have been working on this a while and I am at a standstill, I was given a function to clear the form everytime it calculates but I don't know how to implement it, I am new to VB. Here is what I have so far:
Public Class frmFutureValue
Private Sub btnCalculate_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnCalculate.Click
[code]....
I'm having a problem with a MySQL query for returning the "last visit" field in a table.Originally I had:select fname, lname, last_visit from patient where isactive = 1 and uid = 1Which worked perfectly in MySQL, but as soon as the query is executed by my ASP.NET app, it adds in the time field also to the date area. So 2011-12-12 becomes 12/12/2011 12:00:00 AMI tried this also, with no improvement:
View 2 RepliesHow do I make options in a drop down list display variables? For example this is what I would like to have done:-in form1, a user types seven words into 7 text-boxes.-in form2, a user clicks on a drop-down list to select one of the words that was previously typed in to a txtbox in form1.
View 6 RepliesI made a little program what worked perfectly, till some started writing his input in the display of the comboBox istead of selecting it.
View 1 RepliesI have a combo box that has a drop down list with long values in the drop down
Ex:
LB - Pounds
GR - Grams
When the user selects on of the values I want to just show the Abreviaqtions and not the descriptions. So when the drop down is shown it shows
LB - Pounds
GR - Grams
When the user selects "GR - Grams" from the drop down list "GR" is the only this shown in the combobox. I've tried TextChange,SelectedIndexChange and SelectedValueChange but I can't get them to work.
How to query a record in vb.net using combo or textbox via linq to sql like the search engine? Just like when you search in google or youtube, once you typed in the initial string on the textbox or combo box it will show a drop-down list. I tried to use it in my application using linq method but the problem is it would duplicate on the first string that you entered on the dropdown list if that record exist on your database after you press the space key. I used the code below which duplicates the records on the drop-down list when you type in your string after the space key.
I just want it to be like in any search engine that when you type in the string or your initial string, it will display on the drop-down list all the records from the database that contains the string you entered without duplication. In my case, I'm trying to query a name from my database. This is how it should work, For example, if you type an initial string in the textbox or combo box a named 'Mark', it should display all the names from the database containing 'Mark' into the drop-down list before it changes into its final string that you entered.
Here is the codes I used:
Private Sub ComboBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles
ComboBox1.TextChanged
Dim db As New MultipleDatabaseOperationDataContext
Dim search As String
search = ComboBox1.Text
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I have a project where I want to display a combo to show dropdown list of directory listing like dialog boxes does. there is a Win32 API
int DlgDirListComboBox(
LPTSTR lpPathSpec,
int nIDComboBox,
int nIDStaticPath,
UINT nFileType
);
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but I can't figure out what value should I pass in for nIDComboBox parameter (I tried and handle do not work here!)
I want to display the correct records in my SectionName dropdown list whenever the user select/check an radio button (Elem or HS). No radio button is checked during design time but when I run the app, the SectionName dropdown list show Elem records. also when I checked the HS radio button the SectionName dropdown list records does not changed at all..
Private Sub frmLoading_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If cnn.State = ConnectionState.Closed Then cnn.Open()
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i am using date time picker and i am selecting 1 date from calender.after selection of that date i want to refresh date time picker i.e. it should display todays date.
View 2 RepliesI am working on a project for a class, and am having trouble getting my program to automatically calculate the subtotal every time an item is added to the shopping cart list. I've tried sub procedures and functions, but I can't seem to get it to work.
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I have a datatimepicker1 on the form and want to display the result dataset in the datagrid view.So I use query builder in the dataset designer to put "@PickDate" in the filter of PickupDate.And i use the following code to get the result and show in datagrid.But it is not working.Actually I don't know what syntax to use for the date parameter.
Private Sub DateTimePicker1_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.ValueChanged
Me.HisPickupTableAdapter.FillByDate(Me.HisPickUpDataSet.HisPickup, Me.DateTimePicker1.Value.Date)
End Sub
I have this situation where I have a SqlDatasource control and the select query is like:
SELECT col1, col2 FROM table1 WHERE colDate = @date
The source of @date is a label with the text: 2009-05-29 12:06:00 I get the following error when I run the query:
Conversion failed when converting date and/or time from character string
I tried using convert(datetime, @date), as well as different date/time formatting of the label itself. Everytime I get the error.
However, when I run the query in the management studio like:
SELECT col1, col2 FROM table1 WHERE colDate = '2009-05-29 12:06:00'
I found out that the @date is parsed as 05-29-2009 01:30:00 TT I don't know where the TT is coming from? And I'm sure SQL Server wouldn't be able to handle it?
how to display the time and date on a label and the second will keep changing, like a real time clock ?
View 3 RepliesI want to get two lists for system time formates and DateFormates
I am able to get current format
My.Computer.Info.InstalledUICulture.DateTimeFormat.ShortDatePattern
CType(My.Computer.Info.InstalledUICulture.DateTimeFormat.FirstDayOfWeek, System.DayOfWeek).ToString
but not found any way to get list of all formates used ..
How to display full server date and time in vb.net ?
i want to display server date as 20-Nov-2010 in textbox1 and time as 08:11:00 AM in Textbox2 on page load event
I am showing some data in a DataGridView using an access table. Here is my
Dim ConnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=....db.mdb"
Dim SQLString As String = "SELECT * FROM Table1"
Dim OleDBConn1 As System.Data.OleDb.OleDbConnection = New System.Data.OleDb.OleDbConnection(ConnString)
Dim DataSet1 As New DataSet()
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The problem is that there is one column in my access database that is formatted as date/time however the only values in the access is time. When I display this table in the DataGridView, it adds this random date from years ago in front of that time. How do I reformat this DataGridView column to only display the time and not the date?
I have a problem regarding timer in the listbox. It suppose the time and date have to appear once only but it appear a non stop in listbox when run.
Here is the code:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
ListBox1.Items.Add(TimeString)
ListBox1.Items.Add(DateString)
End Sub
Also I want to know the code for 'day', like monday, tuesday and etc.
how do i display the time and date using a label? I have the time displayed in a timer tick like this : label7.text = timeofday() But i cant seem to get both time and date up
View 5 RepliesI want to display time and date in a RichTextBox, next line after a piece of writing.However, my code makes the whole text lose formatting.
My Time and Date
Rich.Text += Environment.NewLine + Now.ToString + Environment.NewLine
I would like to display the Visual Studio 2010 build date and time on the 'About' box/pop, changing the following from current date time to only the build time. frmAbout.Label_CurrentDayAndTime.Text = DateTime.Now.ToString()
View 5 RepliesI want to compare my last transaction date / time which display in a label which I get from the data base to the system date / time and if there is a deference of 5 minutes then I get a massage.The code that I ve got check that the last transaction date is smaller but I dont know how to set it so that it only check for 5 minutes.This is what I ve got but its not doing what I expected.
Private Sub Command1_Click()
Dim date1 As Date
Dim label1 As Date[code]...........
I expected this to work[code]...
The date gets formatted according to local settings, but not the time.
I seen API examples but, dangit, this should be easy and built into the framework.
Why is it working for the date but not the time?
For example, check out my regional settings for displaying time [url]...
It's simple question. I am confused since I am new to vb.net and windows form. I would like to display combining of one column (lastname+firstname) in the list box control from the query. My code display something.
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I want to display date and time on top of the form where normally written form1 forms name. i want to display date in formate of for example 23 August 2010 and time in this formate 12:33:20AM
View 7 RepliesI have a database table that stores a datetime value.I want to display that value on my asp.net textboxes, except I need to show date value in TextBox A and Time in TextBox B.How can I split those values in VB.NET?
View 2 RepliesWhy does QueryBuilder modify my query? Is there a workaround? When I enter the query below, QueryBuilder modifies the query to the more complex version below, requiring additional parameters for the FillBy method. Any additional parameters adds an exponential amount of complexity to the modified query.
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I am on one asignment of convering C# to VB.net and stuck up with this problem.C# application has one class having inline two dimensional array initialized with size 168X168. I converted same class to Vb.net. Now whenever I create instance of my this VB.net class, It take almost 3 minute.
To figure out problem, I put break point on sub new() (first line of my constructor), and behaviour is realy strange because it takes 3 minutes to reach at first point of my constructor.Whenever I comment out my large size array initialization code, It works perfect. Now please note that same code is working fine in C#. It is not taking even few millisecond to initialize that class.