VS 2010 - RGB To Hex Conversion?
Feb 28, 2011
I have 3 textboxes in where RGB colors are added. Now I've added an extra for HEX color. When I tried to convert the 3 textboxses to HEX I found that the output is wrong. Seems I'm doing something wrong.
Dim conv2hex As String = System.Drawing.ColorTranslator.ToHtml(Color.FromArgb(color_map_txt_r.Text & color_map_txt_r.Text & color_map_txt_r.Text))
color_map_txt_hex.Text = conv2hex.Substring(1)
[code]...
The correct conversion would be: a90266, but the result is: 155111..
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Feb 2, 2011
I'm creating a simple personal calculator, it only has 1 textbox and 1 button.my code is:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox1.Text = Val(TextBox1.Text) * 6.2
End Sub
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Apr 24, 2012
I'm trying to convert some of my code from EXCEL VBA code to VB.net. However I've been encountering some errors and can't seem to get to display the output correctly.Below is my sample text data:
Date Time SYSID LPARBSY MVSBSY INRDYMX INRDYAVG INRDYQ(%) AVG_PROCS
---------- -------- ----- ------- ------ ------- -------- --------- ---------
03/18/2012 09.00.00 CP1A 11.97 12.03 3 1.1 99.0 2.0
03/18/2012 09.00.00 CP1B 8.86 9.12 3 1.1 99.3 2.0
[code].....
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Mar 10, 2012
as i learn VB 2010 express, i want to try some serial communication and i found this code for VB6..but i have no idea how to make it work in VB2010?
Private Sub Form_Load()
MSComm1.RThreshold = 44 'transfer data into VB program only after receiving 44 characters into buffer
MSComm1.InputLen = 0 'i think only for receive data & not for sending data ...check
MSComm1.CommPort = 1
[code]....
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Jan 18, 2012
I have eight text boxes each can have any numerical value only consisting of the numbers 1-8 up to eight digits each. No 0's or 9's. I am using a timer to loop through the sequences of text boxes at a given rate. This is already configured.
Now here's the hard part so bare with me.I need to output the first value of a text box, wait some time then output it's counter letter (below the number on the keyboard), go to the next text box and repeat. Example:
[Code]...
Ultimately I'm trying bring my PC Interface project up to date by going from a parallel port to USB. This will be the "Custom Loop" function for the device.
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May 13, 2010
I have been using this code for a long time now and it has always been accurate. I recently tried to convert a large string from one base to another and some weird stuff happens.
When I convert from base 36 to base 10, the result is accurate. When I convert the result back to base 36, it becomes inaccurate.
[Code]...
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Nov 15, 2011
i am creating a temperature conversion tool with vb 2010. i am trying to use radio buttons to choose the type of temperature that i am converting to and from.
Option Strict On
Public Class project
Private Sub txbInital_TextChanged(sender As System.Object, e As System.EventArgs) Handles txbInital.TextChanged
[Code].....
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Aug 24, 2011
Programming Applications Office Outlook 2007.This publication comes with sample VB code which I have dowloaded and am attempting to run.The code was written using VS2005 and I am using VS2010.The Upgrade conversion works ok and the project loads - however I get the following errors when I try to build:Does Microsoft have a fix? I only get thousands of people asking the same question when I search!!
ErrorAn error occurred while validating. HRESULT = '80004005'C:Documents and SettingsMartinMy DocumentsVisual Studio 2005ProjectsSampleCodeVBSampleCodeSetupVBSampleCodeSetupVB.vdprojSampleCodeSetupVB
[code].....
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Apr 11, 2012
I am working on a project where I want to convert all the mdb files in a folder to xls files in C# or VB. Here user will select folder and then all the mdb files in that folder should get converted to excel files having same name. Also mdb file can contain many no. of tables and and I want each table in mdb file must be converted to different sheet having same name as that of table.
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Dec 27, 2010
I am trying to convert text in a text box (txtEventDate.Text) to a date type in a structure: ThisEvent.EventDate (declared as date). The text in the textbox is of the form: 05/18/1927 (i.e. May 18th, 1927) and after looking long and hard thru the forums attempting several different things, like:
'ThisEvent.EventDate = CDate(Format("#" & txtEventDate.Text & "#", "mm/dd/yyyy"))
'ThisEvent.EventDate = Date.Parse(txtEventDate.Text & "12:01:00 AM")
'Date.TryParse(txtEventDate.Text, ThisEvent.EventDate)
The code is commented out because none of them convert the string to a date value (I know a date does not have a format and I have looked thru the MSDN). How can I stay logged and composing a thread past some arbitrary time limit that forces a re-login?
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Jun 1, 2011
I have a fairly lengthly block of code that I'm trying to convert from VB6 to VB.NET. The ArcObjects GIS code basically looks at a table and groups a bunch of GIS layers together and adds them to the ArcMap table of contents. I'm having trouble with this line when testing it in Visual Studio 2010: [Code]
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Jul 25, 2011
I have written this code and tried running it but I am getting errors in the code segments below. The error says "conversion from string to double is invalid". whereas the calculation for 'y' is an addition so should not be giving the value it is giving at the moment. ICCPtotcircuitres is also returning 'nothing'.
Private Function iccptotcircuitres(ByVal x As String, ByVal y As String, ByVal z As String) As String
Dim Res As String
Res = x + y + z
iccptotcircuitres = Res
[code]....
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Jan 13, 2012
I inherited a program that retrieves 3 datasets from our vendors' web services, converts it to a table and then merges the 3 tables before exporting into xml from the resulting combined table. The problem I am having is that when web services returns an empty dataset the program crashes in the attempt to create a table from the empty dataset.How do I modify this code to either create an empty table or recognize the empty dataset and skip around that particular table creation, merge and removal? There is always data in at least one of the datasets.
foreach (Branch branch in branches)
{
Console.WriteLine("Opening connection...");
Vendor.ws_ordersSoapClient VendorClient = new VendorInterface.Vendor.ws_ordersSoapClient();
[code]....
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Apr 19, 2012
My startup form displays a login box and then, upon successful login, displays a series of buttons. One of the buttons displays a form named Calculator using the following
[code]...
When stepping through the code after clicking the button that calls the above code, it gets Calculator.Show and then jumps to code on the Calculator form that fires when a checkbox on he Calculator form changes checked state, apparently bypassing the Calculator_Load procedure altogether.This eventually results in the following error:{"An error occurred creating the form. See Exception.InnerException for details. The error is: Conversion from string "" to type 'Double' is not valid."}With the IDE claiming the error is occurring on the Calculator.Show() line on the previous form. Clicking the button a second time causes the form to load as expected, with everything working corectly.The load procedure header is:Private Sub Calculator_Load(sender As System.Object , e As System.EventArgs) Handles MyBase.Load Am I missing something in here that would cause that not to fire first upon a Form.Show call?Possibly relevant is the fact that I renamed the Calculator form prior to the problem arising, but I've searched for the old name and there are no vestiges of code still referring to it by that name. I also tried renaming the form back to the old name, but that didn't fix the problem either. (Plus I seem to recall having ran the application several times after the name change before the error was encountered, so I don't think this is relevant but didn't want to leave it out, just in case.)
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Jun 18, 2012
I need to create hex color to visualize wit it a number on google earth. Moreover I would like to create a small image file that depicts the color used in google earth. so I convert hex color from ARGB to brush color This is my
dim oo=new random()
Dim filecolori = New StreamWriter(dir_colori + "lista_colori.txt")
Dim b = Nothing
[Code]....
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May 11, 2012
I'm unsure if this should be in Office Automation or here, but I opted for here because I'm creating a VB.Net program to handle all of the office automation and my questions are a combination of the VB.net portion and some of the VBA formatting. At a high level I receive a file in email, put the attachment in a monitored folder, import the text file to excel, format the excel, and then email the excel file to a list of recipients. [code]Obviously the items above that are not complete are the bulk of the work, but I wanted to get some advice on what some of you think would be the best way to approach something like this. The import and formatting of the file are causing me some problems because I just can't decide what would be the most efficient way to do this. Having a template excel that contains all of the formatting already done for me and attempting to transition the data to this document (no clue if/how I can do this). Is it even feasible? Have the template already created and then import the text file to a new excel file, then transition that data to the excel template?
Something I thought about, in terms of formatting the document, was to record a macro of me doing all of the formatting that I'm going to need and then attempt to convert that macro into my vb.net code, but I'm not sure if that will work. I will need to verify that the text file comes in the EXACT format every time correct?
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Feb 18, 2011
I have a code for converting characters to it's ASCII-value. I want to display this in a textBox, but when I stuff it into a ForLoop VB says that the Index is outside the bounds of the array... if I take the L-1 (see code below) I miss the first character...
Private Sub btnRecieve_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs
) Handles btnRecieve.Click
[code].....
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Apr 8, 2009
a user will enter a number, n, which ranges from 1 to 30. they will also enter a "P" or an "S" (sum or product). depending on which was selected, it will calculate the sum or product of the numbers from 1 to n.i'm having a conversion error on line 5 stating "Conversion from string "S" to type 'Double' is not valid." [code]
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May 11, 2012
I'm creating a program in VB.net that does the following:At a high level I receive a file in email, put the attachment in a monitored folder, import the text file to excel, format the excel, and then email the excel file to a list of recipients.
Here is my plan:
Completed: Outlook VBA to monitor all incoming email for specific message. Once message is received drop attached .txt file in a specific network folder.
Completed: (VB.net) Monitor folder, when text file is added begin processing
Not Complete: (VB.net) Import text file to Excel
Not Complete: (VB.net) Format Excel Text file.(add in a row of data,format column headers with color/size, add some blank columns, add data validation to some of the blank columns that allow drop down selections)
Completed: (VB.net) Save file.
Completed: (VB.net) Send file to list of recipients.
Obviously the items above that are not complete are the bulk of the work, but I wanted to get some advice on what some of you think would be the best way to approach something like this. The import and formatting of the file are causing me some problems because I just can't decide what would be the most efficient way to do this.
The way stated above. Import to excel -> format Having a template excel that contains all of the formatting already done for me and attempting to transition the data to this document (no clue if/how I can do this). Is it even feasible? Have the template already created and then import the text file to a new excel file, then transition that data to the excel template?
Something I thought about, in terms of formatting the document, was to record a macro of me doing all of the formatting that I'm going to need and then attempt to convert that macro into my vb.net code, but I'm not sure if that will work. I will need to verify that the text file comes in the EXACT format every time correct?
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Sep 15, 2011
I am currently in programming class and I have tried time and time again to complete a form called "theater revenue" that was assigned to me. Even though I have typed in a lot of code, it keeps telling me "Conversion from string "" to type 'Double' is not valid."
These are the directions: "A movie theater only keeps a percentage of the revenue earned from tiecket sales. The remainder goes to the movie company. Create an application that calculates and displays the following figures for one nights box office business at a theater. Assume the theater keeps 20% of its box office receipts. Use a named constant in your code to represent percentage."
Here is my code....
vb.net
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
' Declare variables for the calculations.
Dim dblATS1 As Double
' Gross Adult Ticket Sales as Double
[Code] ......
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Apr 26, 2012
[code]I'm trying to leave the textboxes A, B and C EMPTY so an error message box will appear saying "You did not put any value in textboxes A" or "B" "C".. but my program works if you put a value in the three boxes.[code]
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Sep 1, 2011
I have a form, which holds several comboboxes, textboxes, checkboxes.I use an msaccess database to store the values into.When I enter text in a textbox and then click the save button I get the following error:conversion from string "" to type 'double' is not valid.But I really don't understand, the field of the database where the textbox text is being stored in is a text type.I searched google for it and the problem seems to be that the type of data from the textbox isn't the same as entered into the field of the database.But the strange thing is, is that as far as I can see, it is.[code]
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Dec 4, 2011
I have an InputBox where I want someone to input a number. The number would be an integer. The line looks like this amount1 = InputBox("how many?", "how many?")If they click cancel, it errors out because it can't convert blank ("") to an int. How can I do this with InputBox and not get that error?
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Jun 6, 2012
Does anybody knows if it is possible to convert a numeric value into a System.Drawing.Color (or Pen) value? I need to implement the following code:MyBitmap.SetPixel(x,y,MyColor)
MYColor is a long integer and does not work because the above code needs a system color.
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Jul 26, 2011
I am developing a site in ASP.Net and VB.Net that will enable users to sort data in a GridView in Ascending or Descending order.The records are coming from an SQL Server Express database.
I go to click on a column heading to sort the data and I get the following error:
'Conversion from string "DESC" to type 'Double' is not valid.'
Below is the code I am using for the sorting:
[Code]...
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Aug 31, 2009
Here's 2 questions that I hope someone can help me on. This is in VB.net. I keep on getting this error 'java.io.bufferedInputstream.count is not accessible in this context because it is 'Protected Friend'. Does anyone know how to fix this error?
The other errors i get are "Overload resolution failed because no accessible 'Val' accepts this number of arguments". I have listed below the code that I have coverted from Java. Where is my mistake?'the underlined areas are where it is giving me errors.
[Code]...i
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Jul 15, 2011
Im getting that error in the da.Fill(ds)
Imports System.IO Imports System.Data.SqlClient
[Code]...
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Sep 6, 2011
I'm new to this board and I was wondering if you guys could help me out. I have a problem that needs to be resolved before 9:30PM tonight.
I'm a bit of a sloppy coder so work with me. Here's the code that's giving me problems:
[Code]...
I have 6 text boxes, 5 of which accept input. When they're focused on they become blank for a number to be typed in and upon losing focus, they add the labels etc. on their own.
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Jul 12, 2010
I am getting the error: Conversion from string "11/07/2010 13:00:00" to type 'Date' is not valid. In my ASP.NET code when run on the web server. The date is valid and it can't be a US format issue because either way it would be valid. I have tested it and it seems to error when the time is > 12:00 (ie. a 24hour like 13:00 or 21:00).
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Feb 17, 2012
I am trying to write code to calculate 2011 Federal Income tax for single person. When I run the program, I get Conversion from string "" to type 'Double' is not valid.
Here is my Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click
[Code]...
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