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Hello everyone, I am writing a program which communicates with a device(Energy Meter) via com port of my computer. I am using a RS232/RS485 converter. Because the device that I want to communicate with only supports RS485 communication media. I have two different brand of converters 1) Moxa...

Hi, I am using Listview control on my project. I add items to the listview control cyclically. I mean I fill the listview with values and then after a time period I refill the listview with the new values. I do it with the code below. But everytime I refill listview it flickers. For example I...

Hi, I am using System.IO.Ports.SerialPort to communicate with a device. I sent a command to the device then it sends reply to this command. I get the reply from device using DataReceived event of the serialport object. But reply comes with two parts (not everytime but sometimes it comes with...

Hi, I have a variable named x and it has a value in hexadecimal format but type of x is string. Dim x as String x="AF" I want to convert this string (actually hex) to binary equivalent. Like this x="10101111" is there any function in .Net to do this convertion? Thanks in advance.

Hi! I have a device (named ETG100) which has an Ethernet port and it is connected to my PC through a Ethernet switch. When I ping the IP address of the ETG100, ETG100 relies. So everything is ok. But if I put my ETG100 to a different place where almost 30 m far from Ethernet switch and use...

Hi! I have a string which consists of a numbers and a variable(z). Like this, “2*(z^(-1))*3*(z^(-1))” The result must be as follows, “6*(z^(-2))” Is there any way to do this in vb. Thanks in advice

Hi! I have a string(a) which consists of a number(5) and a variable(z). I replace z with 2 using replace function. and I want to get 7 as result(x). Is there any function to get right result. Dim a As String Dim x As Long a = "(z + 5)" a = Replace(a, "z", "2") x = Val(a) Thanks..

Hi! I need to connect a remote computer using web, because in this way i will be able to connect to the network of this remote computer. In this network there are some devices which has an ethernet port and a program in them.When i accomplish to connect to this remote computer i will be able to...

Hi For a project I am working on,I need use a specific font file.I copied this font file to windows fonts folder using this code. FSys.CopyFile App.Path & "\FUTRFW.TTF", "C:\WINDOWS\Fonts\", False But when I open my project I see my text is on default font, not on the font I copied. When I...

Hi I am trying read data from serialport. The data comes correctly to my Buffer variable,but in that code (TextBox2.Text = Buffer) vb gives an error. error is:Cross-thread operation not valid: Control 'TextBox2' accessed from a thread other than the thread it was created on. How can I get rid...

Hi Is there any way to be aware when the form's minimize button is clicked?

Hi! I am new at vb.net I am trying to use contextmenustrip.My code is: Private Sub Panel1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Panel1.MouseClick ContextMenuStrip1.Show() End Sub When I click on the panel,ContextMenustrip...

Hi! Following code convert ascii desimal data to desimal data char ascii_array[10]="65535"; unsigned short int datax; sscanf(ascii_array,"%u",&datax); result is: datax->65535 ----------------------------------------- char ascii_array[10]="65536"; unsigned short int datax...

Hi! char ascii[13]; short int datax; datax=10; sprintf(ascii,"%6d",datax); result is: ascii-> " 10" Is there any way to convert int data to binary array.I mean, short int datax; datax=10; function(ascii,datax); result is: ascii->"0000000000001010" Thanks in advice

char asciihex[5]; short int datax=10; sprintf(asciihex,"%4X",datax); As you know, result of this code is : " A" Is there any function to reverse this operation.I mean, asciihex[5]=" A"; datax=function(asciihex); result is :datax=10 Thanks in advice...

Hi I have a batch file (compile.bat).It works correctly. But I want to run this bat file using VB. cmd = Shell(App.Path & "\C51\BIN\compile.bat") I tried the code you can see above, it can run the batch file,but the batch file doesnt work correctly. When I double click on batch file it works...

Hi! I have a label control.The DimensionS of label control are height=480 and width=384 for per letter.I mean that the height of the label control is fixed but width of the label control can change.go as follows label1.width=len(label1.caption)*384 But depending of the font I have...

Hi! I created a specific file using file system object Set tstream = FSys.CreateTextFile("C:\selim.svr", True) The extension of my file is *.svr.But this file hasn't any icon.I want to assign a icon to this file.Has anyone tried this job? Thanks in advice.

Hi I am trying to copy a file to an another folder Dim FSys As New Scripting.FileSystemObject FSys.CopyFile CommonDialog1.FileName, App.Path & "\pics\pattern", True But it gives an error Run time error '70' Permission denied I couldn't find what is the problem Thanks in advice...

Hi! I have a problem with mschart.I didn't know whether there is a solution about this problem. For i = 1 To 30 MSChart1.Column = 1 MSChart1.Row = i MSChart1.Data = fifo(i) Next i Yes,it works,but when new values are transfered to data property of mschart,mschart...