VS 2010 Result Is Not Being Displayed
Sep 13, 2011
I am using the WebBrowser control with VB.Net (2010 Express) to get exchange rates from ft.com. (Note: I realise that there are simpler ways of getting exchange rates, but it is a learning exercise as much as anything else). I am navigating to a webpage, setting the values of a textbox and two listboxes, and then trying to get the resulting exchange rate which will be displayed as text. Trouble is, the result is not being displayed. I probably need to trigger an event to force the page to update, but I have tried this and it hasn't worked. [code] The 'onchange' event is intended to trigger an update, but it doesn't. I have tried a few variations without success (including "invokeMember"). So at the moment the amount and the to/from currencies are correctly set on the page, but the resulting rate is not shown.
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Jul 14, 2010
I'm a police officer and trying to write a program which will print the officers name, start and end dates and select a random road from an array that he/she will be responsible for during the time period. Right now I only have 6 entered to try and get the hang of this. It has a drop down list of persons names, a start date picker and an end date picker. The program will then display the name, start and end date and select a random road from the array. [code]...
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Jan 17, 2010
i have three text boxes that the user will input numerical data into to determine the area of an object. i need the result of my calculation to be displayed in a label but i cant figure it out.
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Jul 30, 2009
I'm trying to do this division and the result to be displayed on a eight decimal number.
Dim r1 As Integer
Dim r2 As Double
r1 = Val(TextBox16.Text)
r2 = r1 / 60
TextBox18.Text = FormatNumber(r2, 8)
The value or R1 on this case is 273.4 but it varies according with the result obtained so I can not allocate a constant number to r1. The problem is the result that I am getting is 4,55000000 instead of 4.5566666
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Oct 8, 2009
When a user clicks the + button on the binding navigator, I want to set the displayed item of acombobox to the value displayed in a label. The combobox is bound to a field in the table. Theproblemis that when the user clicks to add a new record the combobox is cleared and they forget to select a value before they click save.
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Mar 5, 2011
I have 2 buttons, named: 'Select item 1' and 'Select item2' to these buttons I have added images. how? when the form loads I execute this
Private Sub LoadButtonImages()
btnCompare1.Image = My.Resources.close1
btnCompare1.ImageAlign = ContentAlignment.MiddleLeft
[Code]....
when I test the program on my friend's pc it gives an error and does not display the image. ( and yes I already tried putting the executable in exactly the same folder as it is on my pc WITH the image folder.. )
so is there any way to use the first method of loading the images and ensuring the size is correctly? Ive added 2 screenshots to show you what I mean by incorrect size..
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Jun 5, 2010
I have a parent form, which can lanch a dialog box. A wrong selection in the box launches a message box with an error message. When the message box pops up, the dialog box disappears, so the messagebox is sitting on top of the parent form.Once the user clicks "OK" in the messagebox, the box disappears, and only the parent form remains.How do I make it so that the dialog box remains when the messagebox is displayed? And also, I want the dialog box to remain when the user closes the message box. The user should have the option to make the right selection in the dialogbox once the messagebox disappears.I tried to hunt for a property for the dialog box to achieve this, but couldn't find any.
Here is the code in the parent form to lauch the dialog box, and to also launch the messagebox, when the user has made a selection in the dialogbox:[code]Am I having this problem because all the code to launch the dialog and message boxes reside in the parent form? If I put the code to launch the messagebox in the dialog box, would that make the dialog box persistent when the messagebox is launched? I am putting all the code in the parent form because it can process the DialogResult.
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Jun 6, 2010
I use an access database and some queries return calculated fields resulting from
functions in the code module of the database These queries are not listed in the "Views" tab of the query designer when adding a tableadapter in the data source designer
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Jul 19, 2011
VS 2010 is rather annoying in that its sub windows always seem to be moving about and I have to put them back where they belong. It seems that I've completely lost one window now however- its the one that should go below solution explorer/to the right of the error reporter where all the information for the highlighted entry is displayed. How do I get this back/restore defaults of the way things are displayed?
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Feb 1, 2011
I'm looking to put a few labels on a form but the text that they will display will not be static. Instead they should be dynamic as the values used will be either the value of a specific Environment variable or from a value stored in an array. These values will change depending on which user runs the application. How do I achieve this?
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Jun 3, 2012
I am trying to make a Windows Form in VS 2010 that is used to determine whether someone is entitled to a prize/medal/award whatever you want to call it. So basically if someone clicks on a check box to say they attended an event and they enter a date range between saying they attended the event between 01/01/2010 - 01/02/2010 and the requirement for the award is that they attended the event for more than 20 days then because the statement is true I would want a box to pop up and say person is entitled to receive a particular award. There are multiple awards available based on different conditions so to be eligible for so the result would be dependent upon which boxes and date ranges are selected.So For Award1 the logical argument is something along the lines of
IF Event1CheckBox = Checked AND
Attendance => 20
Result = Entitled to Receive Award1 Else = Not Entitled To Receive Award1
[code].....
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Sep 9, 2011
I want my application to open a web page that has an iframe within it named "test_iframe". Now I want to obtain the text being displayed in test_iframe. How do I get this content (I dont need the HTML code, only text being displayed in that page). Also if the iframe is hidden, can I obtain the content in such a scenario also?
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Dec 10, 2010
I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
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Sep 25, 2010
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
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Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Apr 22, 2011
I am working on a program. I've got the following
Private Sub frmTabel_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated
Dim strHoofding As String
strHoofding = "Geleend bedrag : " & _
strRechtsUitgelijnd(Format(glngBedrag, "‚¬ #,##.00"), 15) & vbCrLf & _
[Code] .....
What it should do is placing the four formats but I am only getting result from glngBedrag'
Like this: [URL]
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Apr 28, 2011
I have the following code which returns a single row and column of an MS Access database. My goal is to put it into the Text property of a textbox. Can please someone explain me how to do it?
Dim cmd1 As New OleDbCommand("SELECT NOME From FORN_NIB Where NUMERO = ?", cn)
Dim P2 As New OleDbParameter
cmd1.Parameters.AddWithValue("P2", ComboBox1.Text)
Dim Reader1 As OleDbDataReader = cmd1.ExecuteReader()
Dim dt1 As New DataTable
dt1.Load(Reader1)
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Nov 15, 2011
I am getting an unexpected result parsing a string into a date string. Here is the code snippet I'm using to test: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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Jun 22, 2011
i've been working on a project that works with a MySQL DB, and every time the SQL executes and adds the listbox items it wont show the first result i have no idea what i am doing wrong here.
vb.net
Dim NwConn As MySqlConnection NwConn = New MySqlConnection NwConn.ConnectionString = "server=XX.XXX.XX.XX; user id=XXXXX; password=******; database=*****;" Try NwConn.Open()
[Code]...
hope someone can give me a solution or if someone can tell me what i have been doing wrong.
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Mar 25, 2011
I am using an Access database to store (filepaths to) pictures as well as comments people can leave on them. One picture can have multiple comments, so the tables look like this:
_____________ _____________
|Photos | |Comments |
|------------| |-------------|
|Id (PK) | |Id (PK) |
|PhotoPath | |PhotoId (FK) |
|Description | |Comment |
|____________| |_____________|
What I need to do now is retrieve a list of all Photos along with their Comments. So I have a class Photo with a collection of Comments:
vb.net
Public Class Photo
Public Property Id As Integer
Public Property PhotoPath As String
Public Property Description As String
Public Property Comments As List(Of Comment) End Class Public Class Comment
Public Property Id As Integer
Public Property PhotoId As Integer
Public Property Comment As String
End Class
I can retrieve the records using an INNER JOIN query (right?), as such;
SELECT Photos.*, Comments.*
FROM (Photos INNER JOIN Comments ON Photos.Id = Comments.PhotoId)
From the result of that, for each row in the result I can create a new Photo instance, set its properties and put it in a List(Of Photo) for further processing (displaying). However, how do I handle the Comments? With this query I would get a lot of duplicate Photos. I'd get a row for each comment, but most of these rows will represent the same photos... How do I handle this the best way? I have used inner join queries before, but only for a one-to-one relationship so I never had this problem before. Now when I finally need a one-to-many relationship I realize I've no idea how to handle this appropriately...
There must be some standard way of handling this? When I previously handled cases like this I didn't use an inner join, I just retrieved all Photos first, then iterate through them and run another query to retrieve the Comments that belong to that Photo (SELECT * FROM Comments WHERE PhotoId = ?). That works fine, but when the tables are getting larger it is getting noticeably slower. So I want to do it in a single query, I definitely want to avoid running hundreds of queries if I can.
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Dec 26, 2011
Currently I'm doing a resistance calculator. If i got 3 combo boxes which let user to choose the color code of a resistor, how to make the resistance of the resistor(resistance after count according to the color code choose by the user) go into a listbox after click "Enter" button? And also initialise the color code choose by user just now and the resistance after count.
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Apr 9, 2012
I am extracting datas from the table to display in datagridview1 as shown in image1.
Now I want to search the datagridview1 and display the result in datagridview2 as shown in image2.
Please do refer the attached images.I am using Visual basic 2010 for this.
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Apr 9, 2012
I am extracting datas from the table to display in datagridview1 as shown in image1. Now I want to search the datagridview1 and display the result in datagridview2 as shown in image2.
I am using Visual basic 2010 for this.
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May 9, 2012
I want to create a LINQ to entities query getting data(join) out of two tables and bind the result as datasource to a datagridview.
Unfortunately I seem to stumble upon a syntax issue.
Table 1 : dcpricing.tblpricing
Table 2 : dcpropertydetail.tblpropertydetail
Grid: grdpricing
[Code].....
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Apr 16, 2010
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
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Mar 22, 2011
I have set up text boxes for user to pick a number 1-20 and to enter a word as well. Then, press submit button. What's supposed to display in result textbox is the word that many number of times. For example if the number is 5 and the word is hello, then "hellohellohellohellohello" should appear. I don't know how to complete my For...Next function to append the word to the result.
Public Class Ch6ex1
Private Sub btnsubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsubmit.Click
[CODE].....................
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Jul 28, 2010
i have form1 with combobox1 and rtb1 i would like to search the rtb1 for combobox1 selected value and return the first 9 characters from the line with the result.
COMBOBOX1
ADRIATIC
AMERICA
APAC-ANZ
[code]....
so if combobox1 selected.value = "BALTIC" then i would like "1209-4756" to become a named string (eg, cda = 1209-4756)
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Aug 13, 2010
I'm trying to lern VS 2010 from VB 6 and one of the things i'm hawing a problem whid is control array.In vb 6 if you create a text box it's named "Text1" and if you yust copy it and paste it it renames to "Text1(0)" and the new one's name is "Text1(0)" and the code would lock like this
[code]...
then it would print for each loop the random result in one of the text boxes corresponding to i.
How do i do this in VS 2010?
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Jun 21, 2011
I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.
this is the vb.net code:
Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC
[Code]...
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Jun 11, 2011
I am developing windows application in that i am generating PDF report using iTextsharp. Problem is that how to display rtf data in pdf.
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