Applying Changes Before Setting Dialog Result Value?
Jan 19, 2011
I have a dialog with an OK, Apply and Cancel button. I want the apply button to have the same effect as the OK button, but the dialog should not close. Can you stop the dialog from closing when you set a dialog result value (as I want to when clicking the Apply button)? Basically I have some settings that are passed into the constructor of the dialog. The dialog then updates its controls with these settings. At the moment any settings that are changed in the dialog are applied when the dialog closes via the OK dialog result (i.e. the code that calls the dialog also applies the changes). This is the way I would prefer it to happen, but the only way I can think of to get what I want to work is to apply the settings changes before I set the dialog result value (i.e. in the dialog code). This essentially makes dialogresult useless in my case as I cant use it to get the effect I am after.
View 6 Replies
ADVERTISEMENT
Aug 27, 2011
InputBox be used instead of a Dialog, and at the same time setting the Button Text Properties to display Afrikaans words like Ja Nee?
View 2 Replies
Apr 4, 2011
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
With Me.PrintForm1
[Code]....
View 6 Replies
May 30, 2012
Here's my
Dim result As New DialogResult
result = MessageBox.Show("Are you sure you want to delete " & LoadedEmployee.EmployeeFull_name & "?", "Employee deletion confirmation", MessageBoxButtons.YesNo)
If result = DialogResult.Yes Then
**code here**
End If
I'm getting the following error: Object reference not set to an instance of an object.
View 3 Replies
Aug 3, 2011
I am developing a custom messagebox class like the following-[code]...
View 1 Replies
Feb 17, 2011
I'm currently working with a client's VB.Net code, which was developed for them by a small development shop a few years ago and which they purchased and have been maintaining and uprgrading since. This client's primary developer is out on indefinite (likely permanent) medical leave and I'm now filling in until they bring in a full timer (as I'm a contractor here). My current task is to add some functionality to a the VB.Net code they purchased. I'm finding practices and techniques in the code that absolutely baffle me and can't make the code do what I want. I'm starting to wonder if it's me and was hoping to get some thoughts on the code I've encountered.
For example: Setting a variable to accept the result of a function by calling the function with many parameters, clearing the parameters in the function, setting them to some value, calling another function with those new values, then never using the values returned by the functions. I'll add a code snippet in the first comment since this is already getting long.
View 9 Replies
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].....
View 3 Replies
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.
View 2 Replies
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)
View 7 Replies
May 12, 2010
I'm allowing users to change data in a DGV. Is there some kind of built in method for DGVs that updates the table with the new values in my Access database? I have a save button that performs the following:
[Code]....
View 2 Replies
Jun 6, 2009
I've got 1 form, with a TextBox1, where I want the news to pop-up.Now, I've made a kind of admin menu, where there's another TextBox in another form, and I want it in such a way, that when I press the "Accept" button, the text saves itself and shows up in TextBox1.[code]Can I control form 1, with form 2?
View 3 Replies
Feb 11, 2012
In my form load event I am setting the defaultcellstyle formats. They are not taking hold anyone know why? None of the formatting that is expected in the code after I bind the datatable to the grid is getting done even though the code steps through it
Private Sub frmADRORD_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'wire the delegate function for incoming updates
AddHandler m_helper.DataUpdate, AddressOf UpdateGridInvoker
'bind the visual grid with the binding source
[code]....
View 1 Replies
Jun 18, 2012
I'm trying to get the first row in each worksheet to be shaded and have the font bold. Right now, I am able to get the first worksheet changes made, but none of the other worksheets within the same workbook are being changed. Here is what I have written so far for creating the spreadsheet and applying a format.Public Function WRITE_TO_EXCEL(ByVal dt As System.Data.DataTable, ByVal includeheader As Boolean, ByVal worksheet_index As Integer) As Integer
[code]...
View 1 Replies
Jun 6, 2009
I have the following [cod]e...
But the label still shows the [b]! It doesn't want to delete itself..
View 2 Replies
Oct 20, 2009
I have add,update,delete buttons on my form.A message box should appear on the screen "should have values to Add/delete/update/" if user clicks on Add/delete/update buttons without having any values in the textfiled,i have around 20 text fields on my form.
View 7 Replies
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?
View 5 Replies
Apr 27, 2012
The general purpose of my application simply reads a line of text for example:
1. I have a printer issue
2. I have a software issue
I have a rule set as follows:
'Define the class 'Printer' with 14 values as a string...
Dim Printer(13) As String
'The string 'Printer' gets assigned a value, this is repeated another 13 times...
Printer(0) = "Printing"
[code]....
The code simply uses a number of keywords to detect if the issue is a 'printer', 'software', 'telephone',. or 'password' problem.I want to apply this rule set to 10 issues within the same rich text box, with the results sent to a text file. The exporting to a text file I can do, however the main issue is, i cannot read the lines individually.
View 5 Replies
Apr 29, 2010
I tried applying an animation to an object in powerpoint through VB.NET. I'm only a beginner and have tried my best to figure it out with something like the following code which is two objects using one as the trigger. I managed to get it working in pptVBA but just can't get it to work in .NET. I keep getting an error COMException was unhandled.
Imports PowerPoint = Microsoft.Office.Interop.PowerPoint
Dim intereffect as powerpoint.effect
Dim oShape/sPic as powerpoint.shape
With oApp.ActivePresentation.Slides(1).TimeLine.InteractiveSequences.Add(1)
[Code] .....
View 2 Replies
Mar 11, 2010
I have an application that is writing a comma separated values file. How would I go about altering the permissions of that file from .NET - for example to give read-only permissions to a particular active directory group?
View 4 Replies
Oct 14, 2009
I have a DataGridView that loads info from an Access DB. The user can change the data accordingly, but how can I make it so the form will save the data that was changed? I know I'll have a SAVE button... but not sure what methods to be calling on the DataGrid
View 6 Replies
May 7, 2010
I'm trying to set ACL's on a folder using Directory.SetAccessControl. More specifically, I want to grant "Users" full control on a folder. AddFileSecurity works perfectly. AddFolderSecurity does not. It's result is that "Users" will get added to the folder's ACL but "Full Control" is not checked off (nor are any other permissions).
Imports
System.IO
Imports
System.Security.AccessControl
[code]....
View 5 Replies
Jul 17, 2010
i got the following equations and want to apply it in VB.net, how do I construct it in VB.net.
[code..]
View 4 Replies
Jun 4, 2009
I have a simple desktop application that uses a .NET setup project (.msi file) to perform the installation. On the first installation, everything proceeds in a timely fashion with good feedback for the user.The problem occurs when the user is installing the latest version of the application over an old version on their machine.There is an unacceptably long delay of about 60 to 180 seconds from the time the installer's 'Welcome' dialog [It's not the Welcome dialog, I've removed that from the Start section of the setup project and replaced it with a CheckBox dialog to ask if the user wants a shortcut on the desktop] disappears until the 'Progress' dialog appears. The user sees minute(s) of blank screen and thinks the install has stopped or failed.
In the setup project properties, I've got the 'DetectNewerInstalledVersion' and 'RemovePreviousVersions' properties set to true. So, I believe that while nothing appears to be happening, the installer is actually removing the old version. The 'Progress' dialog does not appear until the new version begins installation.I've been trying to either:
a) Get the 'Progress' dialog to display immediately after the 'Install Icon' dialog disappears
b) Show another dialog while the Uninstall is running to let the user know that the setup is still running and everything is OK.
I have been unsuccessful with both methods. I'm using VS 2008 SP1?
View 1 Replies
Nov 11, 2009
Can I create new dialog results for my dialog forms? And then use them with Form.ShowDialog method?
View 13 Replies
Nov 16, 2010
Is there a way to launch a Modeless Dialog that stays active even when a Modal Dialog is launched? Can I put the Modeless Dialog in a seperate Thread or something like that?
View 3 Replies
Dec 22, 2009
I often use the process of displaying a dialog from a form, with the dialog user input then used to update the main form without any problem. In a new scenerio I launch the main application screen, I then show a login dialog ontop of the main app screen and can launch another dialog from the login if a new user is required. The plan is to update the login dialog (updating a combobox to reflect the addition of a new user) from the new user dialog.
See code below :-
'Update login forms user list as new user added successfully
frmRoomBookingLogin.cboLogin.DataSource = Nothing
frmRoomBookingLogin.txtPassword.Text = "Updating password from dialog"
MessageBox.Show("The password text is " & frmRoomBookingLogin.txtPassword.Text)
[code]....
The messagebox implies the dialog has been updated yet the text does not change. Is it possible to update the dialog when using a setup such as Form -> dialog -> dialog? I'm intrigued as why the dialog does not reflect changes. I have never refreshed/repainted the dialog as never required to in my other examples when updating a form from a dialog and never encountered a problem when using a two tier form setup.
View 2 Replies
Jul 8, 2010
I'm creating a windows application form in vs 2005 for a client.. It's a data-tracking application. I have a few questions.The client wants a logon screen to be added into the application (at least any way or method that'll ensure that security was applied). My question in regards to this topic would be; Is it necessary to create a logon screen (or even a user authorization) for a windows form? I realize that in a webform project, security should always be considered and should be applied in all areas. Although with a windows form, I thought you can authorize who can gain access to the application by defining which workstations to install the final production release of the application (when its time to deploy the file). Is this correct?
My next question is, what is the best method to exporting data from EXCEL to SQL tables? I have many Excel files that I'd like to take portions of data from each file and insert them to there proper table.
The last question is about deploying a windows form application. As you can tell, I don't have much experience when it comes to developing Windows Form projects. Anyways back to the topic, When deploying a project, does it provide a .EXE file (installation package) to install the application on the workstation? Or is it a .EXE file of the application, where you can run it and no need to install anything?
View 3 Replies
Jan 27, 2012
I am working on applying date validation to excel cell(range) from VB.NET.
Private Sub DateValidExcelRule(ByVal worksheet As SpreadsheetGear.IWorksheet, ByVal DateRange As String)
Dim dt As Date = CDate("1/1/1900")
[Code].....
When I enter 4 digits whole number 7777 it is validating correctly showing message Enter Valid Date, but when I enter 5 digits 77777 it is accepting the value and converting it to 12/10/2112 value and not showing any error message.
Here all I want to do is I want to validate the cell value to any date format mm/dd/yyyy.
View 1 Replies
Apr 9, 2009
I created a form with a datagrid to show data stored in an Access database. It shows the data correctly, using the code:
[code]...
("compras" is the table name and "Comprasver" is the dataset name).The form also has 3 textboxes and 1 DateTimePicker.Then I created a sql query to allow the user to search within 4 fields of the table (field1, field2 and field4 get the data in the textboxes and field3 gets it in the DateTimePicker). The query looks like this: SELECT field1, field2, field3, field4, field5 FROM compras where field1 like "%"+?+"%" and field2 like "%"+?+"%" and field3 like "%"+?+"%" and field5 like "%"+?+"%" field4 is not an important search criteria, so I didn't include it in the query. Field1 and field2 are both string type. Field3 is a Date type and field4 is integer.Once I made the query, it automatically added a toolstrip with a code, which I cut and pasted in my "Search" button "click" event. The code looks like this:
[code]...
But every time I try to search, no matter which criterias I fill in (even if I fill in none of them), I get an error message saying something like the conversion of the "" string into Integer is not valid (my Visual Studio version is in Spanish, so I don't know how to exactly translate the error message).It's supposed to let the user fill in one, more or all search criterias (all 4 search fields).I found out that if I delete from the query the two fields that don't have String type data, it works correctly. What should I do in order to be able to use the Date and Integer type fields as search criterias too?
View 4 Replies
Oct 12, 2009
Okay in my program I have users select options and then it writes text to a file. When the user restarts the program, I want it to read from the file and search for specific text like "User is a senior,False." At this point if the file has this text, I would like the program to read from a line in the program.
View 3 Replies
