Modify Code From Existing SerialPort?
Sep 21, 2009
I've seen this great example of serial communication in VB.NET[URL]..I try to use it in a project I am working on but somethings are not clear to me.1: Now the send and received data is shown in one RichTextBox but I would like to split this into two RichTextBoxes (RtbSend and RtbReceived).It is unclear to me how and were data is assigned to the RichTextBox?
2. the received data is shown in the Richtextbox as one long line, I would like to get a new line for every send message.So for example: I I send "test" four times, I would like to see:The example describes that "comPort_DataReceived" is executed when data is waiting in the buffer. Where can I see the eventhandler responsible for this? How does it know data is waiting?The problem is this kind of coding is a bit to difficult for me. I want to understand the code before I implement it into my project. I understand most of the code but this is unclear to me.
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Oct 24, 2011
In the same class I have
Dim WithEvents YMDChart As Chart
Dim WithEvents YMDChartArea As ChartArea
Then:
Public Sub PlotYMD() handles ButtonPlot.click
YMDChart = New Chart
[Code]...
But here at line 5 I have an error saying that I am not refering to an existing instance whereas I am.If think it is because at this step the YMDChart is dead even if it is present on my form. I have tried with the declaration "Static" but it is only possible within a method and is incompatible with "with event".
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Apr 3, 2009
When the registry subkey value of "Compact Check Count" Dword reaches 100,Outlook Express starts posting nag screen each time you close it asking if you want to compact all your emails The Following snippet Gets the current value of the subkey
Imports Microsoft.Win32.Registry
'Get Path of dword
Public Class Form1
Dim keyvalue As String
[code]....
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Dec 18, 2009
I want to modify the third column of an existing excel file. The problem with below code is a new file is prduced with the new values in Column C and erases all other values in the orginal file. I want to update the orginal file with the new values.
Public oExcel As Excel.Application
Public oBook As Excel.Workbook
Public oSheet As Excel.Worksheet
[Code]....
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Sep 10, 2009
We are translating UI of one VB6 application designed in English (US) into Chinese Language which contains API's, we need to know how to use the Unicode (Wide) versions of used API for new (Chinese) Language and how can we find is there any wide version exist for that used API and how to modify existing API with wide API.
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Nov 2, 2011
I'm looking for a way to programmatically view and/or modify the permission for an existing share. I'm speaking of SHARE PERMISSION, not NTFS PERMISSION, I know how to view/modify ntfs permission.
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Apr 3, 2010
I'm trying to enable a timer within a SerialPort.PinChanged even is reached but the timer tick even never starts. Has anyone ever tried this? I am using vb.net 2008 express so I dont know if that is the issue or not.
[Code]....
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Apr 27, 2011
Is it possible to modify or add code or module into a windows application after deployment?
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Sep 22, 2011
mostly the data inside the datatable is always typed by ourselves, while in this case, i want the computer itself do caculate or whatever and then input in this table and finally the chart will get the data inside the table and then draw the line automatically.is there any sample codes for me to know....(Above is just a simple idea, actually my project is to record the time spent in 2 status(working and idle) and then do the database table. but the GUI should look similar to the image above)
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Dec 6, 2009
Is it possible? Self modifying codes based on users choices.
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Apr 2, 2011
When debugging a program and then we take it to a line breakpoint,then I want to modify the code again.but could not and such message appears in the image which I attach.What can we edit code program at the time of the process of debugging.This can be done in visual basic 6 ide?
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Apr 15, 2010
How can I modify the below code to get a result as it is in the vb6 [code]...
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May 15, 2012
Let say I have the following classes[code]...
If I wanted to say, alter the code definition of the automatic property X (at runtime, perhaps in Sub New), such that I could throw the PropertyChanged event
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Apr 10, 2008
modify the VB6 code to VS 2008 for delete command?
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Feb 23, 2012
I've written a for loop to generate several new text boxes and numericUpDowns when the application is run.
The text boxes / numericUpDowns are generated with a 2-dimensional array. My question is: How do I handle when the text boxes / numericUpDowns are modified?
If you would like the code, just request it and I'll add it here.
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Sep 6, 2009
I got the below code from Deborah Kurata one of the msdn moderator on her webpage. Her code is to save the form size at runtime but i would like to modify it to save the buttons which i have dragged and drop. I tried to modify the code but i tend to when i put the Dim theButton = DirectCast(sender, Button) under the form load method. It put there cannot cast object. something like that.
Public Class Form1
Dim tm As New Timer
Dim Index As Integer = 0[code].................
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Aug 22, 2011
code:
<span>Public Structure UUID
Public Data1 As Long
Public Data2 As Integer
Public Data3 As Integer
Private m_Data4() As Byte
[Code]...
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Jul 3, 2010
SELECT ContactID, FirstName, LastName, Male, Female, Email, Address
FROM Contact
WHERE (FirstName LIKE @FirstName + '%')
The above query works and returns values on first names that begin with whatever item I type in a text box.
How can I modify that code to search for items containing specified characters instead of just searching for items that begin with the specified characters. I would still need to use a wildcard because it is a search field. see below for an example
For example can I query the FirstName column to display people who's name contain the letters "an" in that order a before n but anywhere within the word e.g.
- Anna
- Jane
- Samantha
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Oct 10, 2009
I am running a socket client and need to write some blocking code much like the "Serialport.ReadLine" code which blocks for X amount of time before either throwing a time out exception or returning the string revived. I need to do the same thing with the client socket, basically bloxcking until a CRLF has been detected or a time out has occurred. What is the best way of doing this?
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Jul 30, 2010
I'd like to utilize Select & Insert statements on a DataTable in VB.NET or C#.
Example:
Dim Results as DataTable Results = Select * from SourceDataTable where PlayerID < 10
Is anything similar to this possible?
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Jul 17, 2009
I am trying to edit, add, and update my database. I have the code for updating and it updates fine (I can see the modified time on the file), but I was wondering why none of my changes were being saved when I closed the window. Then I realized I was an idiot and I don't have any code to actually accept edits on this form, I just have code for updating and adding new rows It wouldn't update without me telling it which rows have been edited and need updating, right I mean I can't just type a new value in the textbox, click save, and expect it to save the change.This is the update and new row code I'm using:
Private Sub SaveToolStripButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripButton2.Click
Try
[code].....
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Mar 16, 2009
I am working with some prewritten VB code ,and this portion of code opens a new excel spreadsheet . I would like to instead , open a existing excel spreadsheet that I would like to have a template that explains my data that is loading into it. Could you please give me an idea what I would need to do with this portion of code?
[Code]...
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Sep 21, 2009
I've seen this great example of serial communication in VB.NET
[URL]
I try to use it in a project I am working on but somethings are not clear to me.
1: Now the send and received data is shown in one RichTextBox but I would like to split this into two RichTextBoxes (RtbSend and RtbReceived).It is unclear to me how and were data is assigned to the RichTextBox?
2. the received data is shown in the Richtextbox as one long line, I would like to get a new line for every send message.So for example: I I send "test" four times, I would like to see:
Test
Test
Test
Test
now I see: Test Test Test Test I've tried ctrlf but this does not work.The example describes that "comPort_DataReceived" is executed when data is waiting in the buffer. Where can I see the eventhandler responsible for this? How does it know data is waiting?The problem is this kind of coding is a bit to difficult for me. I want to understand the code before I implement it into my project.
View 5 Replies
Oct 20, 2009
As my latest questions have stated, i am in a process of researching on Silverlight 3 and its application as a suitable RIA solution to a pre-built project a client of ours wishes to webify. And my experience in .Net and silverlight is about 3 - 4 weeks.I have now become aware of .Net RIA Services. I require to use an existing VB class; which was created as a quick wrapper class to emulate a small piece of the client's application code. This is used as a proof of concept. It contains one function which uses the client's DLL files to return a simple data type This class has already been used successfully with Flex/Weborb combination.I unfortunately do not have enough knowledge or experience in Silverlight/RIA Services to grasp what it is i have to do to get the file working. All the examples I find online only specify the method where you use a database as dataSource etc.Could you please inform me how i would go about implementing RIA Services with Silverlight 3, using existing code/classes with no DB? Or could you point me in a direction for further research on the matter?
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May 30, 2009
I have questions on this [FAQ's: OD] How do I open an existing Excel Workbook? I have playing around with the code little. Trying to mod the code to display the selected path and File name in the textbox I have on a form. I can to get it to work right
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May 29, 2011
modify code to insert the data to MS SQL and save changes when click save button for the second time?
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Jul 13, 2009
I did the following
Imports System.Data
Imports System.data.OleDb
Public Class Form1
Dim con As OleDb[code].....
By this i can fetch only one row(the last row) of the access....how to modify the above code to fetch all the rows starting from the begining from the database..........
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Jun 17, 2012
I'm using vb.net. Basically, I have a drop down list, text box and a submit button. You choose a movie director from a drop down list, then type in a movie, click button and it adds the data to my database.There's another button which hides/shows drop down list, text box and submit button using Visible = True and Visible = False, but what I don't like about it is when it hides the things I said before, it leaves some white/empty space like if they are still there, but not visible.Is there anyway to put some kind of holder/container and place a button which when clicked could add my drop down list, text box and submit buttons to that place?
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Nov 11, 2010
I need to make a program in vb that takes a 1 page existing pdf that i specify and inserts that into another existing pdf that i specify.
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Mar 31, 2010
I have a form which will display general data about a branch. Once you select contacts - then the form will display specific into about that branch. I am trying to add a phone number display to the page, but am having a hard time.
[Code]...
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