DGV CheckBox - Recognise Which Check Boxes Are True And Update Automatically When The Information Is Opened From A Text File?
May 8, 2012
I have code which saves DGV contents including check box columns as a comma separated text file. I also have correct code which will take the text file and re-insert it into the DGV at a later time. This all works.When I'm working on the DGV, I have this
Private Sub DataGridView1_CellValueChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellValueChanged
If DataGridView1.Columns(e.ColumnIndex).Name = "Column12" Then[code]....
So that when the check box is true, columns 1 and 3 turn different colours, and when false, go to a yellow colour.However, when I "re-insert" my DGV info from my text file, the check boxes come back correctly - as true and false on the right rows - but columns 1 and 3 don't change colour. I've tried a "DataGridView1.Refresh" option but not getting it to work.The DGV is unbound. I need it to recognise which check boxes are true and update automatically when the information is opened from a text file.
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Jan 2, 2010
I have a text file containing 10 pieces of information. I want to read the information from the text file and put it in text boxes on a form, so that the user can view the information and edit if required. What is the best way of approaching this?
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Mar 19, 2009
I know how to load a txt file into a single text box, but im having trouble loading a text file with multiple output information into multiple text boxes using commas to separate the information.
ex)
txtfile:
123, Employee Name, Employee DOB
[code].....
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May 18, 2010
Basically my program creates a text file based on whatever is contained in the 6 list boxes. What i need it to do is load the text it created back into the relevant list box. text file looks like...
Consignment Number-----Shippment Method------Expected Departure Date
CC33-1EA------------Express Air-----------18/05/2010
[Code]......
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Jun 21, 2012
HTML
System.Diagnostics.Process.Start("C:up.exe")
i opened a file using this command . after a sec i want to close it automatically can i do it using visualbasic?
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Nov 18, 2010
Dealing with reading from an XML file, stuctured similar to the following:
[Code]...
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Apr 12, 2011
I am working on a program using VB.Net 2010 which will enable me to setup groups of files & folders for back up with syncing capabilities etc. I have a concept program which is based on some sample code I found out in one of the VB.Net forums. I have modified it from a command line based program to a form based program. At the moment I consider this code to be a "concept" program which once I have the various copy/sync routines developed and debugged will be integrated in to another program I wrote for
creating "Back Up" groups to automate the process. There are some 3rd party programs that do similar things that I want to do such as Microsofts Sync Toy, but none of them offer the grouping and exclusions options that I am going to program in to this backup/sync program.
So here is my problem, I have the included code taking two folders, a source and a destination, and copying everything from the source to the destination. It will skip over any unchanged files/folders and will delete anything found in the destination folder that is not found in the source folder and it will update all files in the destination folder that have a newer version in the source folder. In other words it will mirror image the source to the destination but will be smart enough not to copy unchanged items from the source to the destination thereby saving a lot of time. The sync part of the program is working fine, the displaying of the progress and results is not.
[Code]...
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Feb 24, 2011
I am designing a prisoner system for a assignment.I have this structure up to now:
Public Structure prisoner
Public forename As String
Public surname As String[code]....
I need to know the code to put this information in the different text boxes that i have.
Eg John goes into txt1.text
Smith goes into txt2.text etc.
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Jun 3, 2011
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
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Nov 29, 2011
I tired this code to check if the Excel File is already open but didn't succeed
vb
Dim exl As New Excel.Application
If exl.Workbooks.Open("C: a1.xlsx") Then MsgBox("Yes")
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Feb 10, 2011
I am receiving information via a serial port as Integers. The information is the displayed on textboxes(two text boxes). My problem is that, I am failing to transfer this information to a Datagridview.I have written the following code.
Private Sub BtnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSave.Click
TxtDuration.Clear()
[code].....
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Apr 26, 2012
My program opens 4 excel spreadsheets updating info. I update one at a time and then close it before opening the next one.I want to add code to my program to test if the file is already open, before trying to open it. Occasionally someone will have one of the files opened and it causes a crash. If I test to ensure it is not open, then I can avoid this.
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Jan 21, 2009
After I have entered data into 12 textboxes and pressed a button to execute the code, the data from the text boxes goes into a database.I want to clear the information in the text boxes after the button has been clicked, at the moment I have 12 lines of code which are similar to this.
MsgBox("Data Has been Added to The Database")
tbeventId.Clear()
tbtitle.Clear()
tbstartdate.Clear()
tbvenue.Clear()
is there a easier/simpler way to remove all data from the text boxes without using 13lines of code
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Oct 11, 2010
I think the problem arose because of Windows 7, but when I was at school the program worked. The program fills in the text boxes with information from Microsoft Access. However, my laptop has Windows 7, and when debugged, the information doesn't fill in the text boxes like before. Also, for added information, the school's computers run with Windows XP.
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Oct 2, 2011
I want to pull information from an array and place it into a chart of text boxes on the form. I have used a control array before but this time I want to create a dwo dimension control array. My guessing is not working... The display will be 10 x 10?
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May 19, 2011
I have a problem in that I have five text boxes pertaining to a customer/client, where there is a txtbox for each: Name; Address; City: State; Zipcode. Of course all the txtboxes are "" at initialization. I also have 2 combo boxes and a 2D array for prices which I have finally been able to understand the array logic. I have also been able to do my necessary calculations for.
My problem. The customer information is first to be validated as all being strings and not empty. The combo boxes I was able to get to tie to my 2 dimentional array and get good output and calculations for a finished product. I am just having problems with the error messages. Also I don't want summary totals unless the data is valid. In other words, the user must enter a complete address and make decisions about the two combo boxes, both of which are needed to use the price array. I will change the comboBoxes to represent dress sizes,"S" "M" "L" and "XL" and the other combobox to describe colorRedSatin or colorBlackBroadcloth with a two dollar difference in price between them. 'That would be similar enough to the problem I need to solve.
Basically I do not want any numbers to appear for price of the dress or addons to the dress unless all validation is complete. I do understand how the radio objects work for discounts and check boxes for accumulating accessories. The program should not give any totals untill the user has input all customer information and made decisions about input from combo boxes and selected calculate from menu. Right now it calculates and puts zeros in when choices are not made from the combo boxes by the user. It will include correct amounts for radio buttons and checkboxes if anything is entered. I need error messages for customer inputs and combo box inputs (if not selected from list of option in drop down for choices) (basically if nothing was put in a text box, the text box is empty. Of course the problem is the user must enter something in all 5 textboxes and not get multiple error messages in rapid succession to fix. We can't always count on our users putting in good data.. When I tried a Do While False with ORs I was getting endless looping. I could not get it to work because it will never execute because the control never passes back to the user.
I don't want to list a series of If/Thens becauser the user will see about 7 messages, where he/she only needs to be fed one at the time. I hope someone can give me some direction. I just need guidance on how to validate the text boxes and combo boxes. The code is analyzed with a "Calculate" on the menustrip. I would like for the calculation not to calculate and put outputs into the summery text boxes unless all textboxes are filled and combo boxes are valid for all the customer information and combo box choices for my two combo boxes describing what is needed for the order to calculate. There are also the radiobuttons and checkboxes, DIMs, Const, Variables, but not having problems with that part I have my indexing problems on the combo boxes worked out also, so I am not concerned about those now except for getting the error messages when I should. I hope that I have described my issues fully. I am using visual studio 8 with Windows 7
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Jun 26, 2009
I'm using VS2008, vb.net, and windows forms. I've got a checkbox that I've set the text property (via the properties window) to "Primary Address" and I bind the checkbox to a column called PrimaryAddress. When I display the form, the text does not show beside the checkbox. It's blank. If I display a row where value of the PrimaryAddress column is "1", then the text shows "True" but the checkbox does not display a checkmark. How do I get "Primary Address" to display as the text and how do I get the checkmark to display?
Here's the code I use to bind the checkbox:
chkPrimaryAddress.DataBindings.Add("Text", dvPeopleAddresses, "PrimaryAddress")
Here's the code I use to clear the checkbox with when displaying a different row:
If TypeOf ctrl Is CheckBox Then
CType(ctrl, CheckBox).DataBindings.Clear()
CType(ctrl, CheckBox).CheckState = CheckState.Unchecked
End If
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Jan 26, 2011
how to wrap the text in check boxes?
vb.net 2003
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Jan 28, 2011
Im using visual basic 2010 and im building a program that will basically, you click on something in the list it will automatically open a .dat file pull the information that it needs, and then proceed to enter it into a box on the right. Well heres my issue i know how to do everything else but i cant seem to imitate this image, i need to know how i can make a list like this where the whole row is selectable, and the items/subitems are divided.
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Mar 6, 2010
My scenario is this; I'm doing a project on a vet and I have a form for the vaccinations that can be given. Each vaccine is assigned to a checkbox. What I want to do is, when a checkbox is checked, the required vaccine is added to the listbox. Also when numerous checkboxes are checked, I want all of the values to appear in the list box (the list box then gets saved to a database).
The only thing i've managed to do is; when the checkbox is checked it gets added to the list box. But when another one is checked the 2nd value replaces the first, in the list box.
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Sep 26, 2011
I've got this label, which changes to a random word each time a user presses a button.. But sometimes the word is too long to fit on the label, so it does this (Picturte below) How can I check if the text on the label has been cut, so I can automatically change the font to fit?
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Sep 8, 2011
Im working on a lay-away form application, this particular part is part of the even where the user adds a new customer, and has come to the section for adding personal references to the customers account. What Im trying to do is to check all the text boxes inside the GroupBox control, and then add all the tags of the text boxes that are empty to the list. If the list holds any records it will be put into a message box to let the user know he missed this value. But I want them to list in one text box. Here is what I've tried:[code...]
I get a conversion error, Cannot convert Prompt to String.
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Sep 14, 2009
I'm designing a windows application in visual studio 2008 and connecting to oracle 10g XE but don't know how to add, update and delete records from my database using text boxes.
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Nov 16, 2010
I have an insert statement which works fine but before the record is saved I want to validate the text boxes. So I just need to know how to check for empty text boxes before the save button is clicked on. I have seen a couple of examples like:
Dim ctr As TextBox
If ctr.Text = vbNullString Then
MsgBox("empty box")
[code].....
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Mar 7, 2011
how to check and uncheck all asp.net checkbox on single checkbox check ?I have 5 asp.net checkbox on webform i want when 1 single checkbox checked then all checkbox will be cchecked and if checkbox is unchecked then all checkb ox will be unchecked ..
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Jan 27, 2010
I have a form which creates a new school talk appointment. In my database, there is a column called 'active' which is boolean (true or false). Then everytime I creates a new school talk appointment and added it to database, the active is automatically set to 'false'. how to make it set to 'true' instead?
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May 10, 2011
This is my problem.I have a field set up in MS Access to Boolean YES/NO, this field is populated when the user check a checkbox on a windows form. If the user check a checkbox, the value is written as checked in the data field (MS Access).The problem is when I search for the user information, I need the information from the Data base to populate(return) to the windows form. Example: If I enter a users phone number and the user data is present, the form gets populated with the information the user previously entered which was store in the database.Example: If the user selected checkbox1 and submits the form. When I search for the user info, the check box should check(populate) because the user had checked it on submit.Here is what I have done:
[code]...
I am getting the check value correctly in the database using a Boolean.Here is one of the errors I am getting. Unable to cast object of type
'System.Boolean' to type 'System.Windows.Forms.CheckBox.I am having trouble putting the codes in a code tag or block
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Nov 16, 2009
I have the following line of code used to input the name of a text file to be opened and during development this was working without a problem. However when I create an executable this is not working and I was hoping someone would be able to give me a tip on resolving this matter.
Dim fileName As String = Application.StartupPath & "" & TextBox1.Text
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Apr 30, 2010
I have been looping thru the backgroundworker, after running a few hours, i found out that it stop even though i did not call cancelasync(). Below is the code:
Private
Sub
SboT_BgWorker_DoWork(ByVal
[Code]....
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Feb 2, 2012
As the Picture show above, When I type the question marks in my txt File, it will appear in the GPRS Username. So how to tell the user who type in the wrong information?this is my loading button's coding:
Private Sub Loadbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Loadbtn.Click
'Dim strFileName As String
'strFileName = OpenFileDialog1.FileName[code].......
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