When i run my program and try to click on of the button that open anotehr from it says
An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object.[code]....
get a button on form A to open form B and then close (not hide) form A when clicked?Background: I am coding a VSTO application for Excel in VB2008.
Private Sub FormAButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles FormAButton.Click
Dim FormB As New FormB
[code]....
i'm studying Visual Basic and my case asks me the next question: I have one project with two Windows Forms (Form1 and Form2). On Form1 there is a button that has to start Form2 and my workbook tells me that I must do this with the following options:
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I need help on how to have a form open up on the click of the button.I already have the form made i just dont know what code to put under the button_click to have it open it up.
View 12 Repliesi have several projects and one main project.i want to open a form from a different project using a command button in the main form of the main project.i am using Microsoft Visual Basic 2010 Express.the language i am using is VB.NET?
View 10 RepliesI created a project with a data entry form. I now added the project to a solution containg other projects. Now from a "Menu form with a button" in one of the projects in the solution, I tried to display the data entry form with the click event of the button on the Menu form and it is not displaying the data entry form. Please could you help to show me how to go about it; such that when I click the button on the Menu form I could display the data entry form?
View 1 RepliesI have a button, and when I click that button, I want it to close the current form, and then open the new form.Here's the code I have so far:
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
Me.Close
Form1.Show
It closes the current form, and then Form1 only shows for about a quarter of a second. (Appears then disappears really quickly). At least I think that's what it's doing.
I'm trying to figure out the script needed being executed by a button element (or some kind of element) to launch another windows form from the same project when being in another windows form? I'm a bit of a beginner with this language, so I don't know simple scripts like this one
View 4 RepliesI'm making an equation program and I want to have a main menu where the user can select an equation and then when one of the buttons is clicked, it closes the "selection" form and opens the appropriate form. For now I just have it set to show the proper form (for example, Form3.Show) but when I try to do something like Me.Close() after it, everything closes instead of keeping Form3 open.
View 2 RepliesI am making a multi form application in VB 08 and need to program a back button (just like a back button in a browser). The code I wrote loops the back function. For example If I start at from 1 and go to 2 and then 3, I need the button to take me from 3 to 2 and then to 1, but my code takes me from 3 to 2 to 3 because it thinks form 3 was the last form before 2. 'm sure this is simple, but so are my skills
Here is a snipped of the code from form 1:
Public strLastForm As String
Private Sub btnTwo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
I am having a hard time with this. This is my code:
invoiceform.show()
me.close()
This is the only way I can think to do it, but it closes the application due to me.close(). How can I do this? Invoiceform is already running!
I'm trying to make a login form thats opened by a button. I know how to make the button open a new form but I want the form to have a admin login,guest login and a new user button that only a logged in admin can open, it should also have a 'only admins can create new users' type messagebox. If your still understanding me I also want it to stay in the file, like you press the login button and it brings you up to the page. I don't know if it could have account control like user from limited to admin.
View 14 RepliesHow would i make it so when the user clicks a button. it will open a form with a some tabs but go to a specific tab like lets say i have 4 lets say i click the button and it goes to 2.
View 10 RepliesI want to achieve the following:
The user drags text from any open window not related to my application ( like firefox or word, for example) onto button1 on form1 in my application. when he/she does that, a new form (called form2 that contains a richtextbox) will open and the dragged text is directly copied (or inserted) into the richtextbox of the new form. button1 has allowdrop set to true. Beyond that I don't know how to proceed.
I tried:
e.effects = DragDropEffects.Copy
But it seems it is not enough.
i try to make an application that can communicate with the door magnetic device. So, when the visitor come to my house, i can control the door OPEN or LOCK using my PC. I;ve created a window form using VB.NET with button "OPEN" and "LOCK". Can anyone provide me some advise how to do this, or with some source code together found in other website?
View 3 RepliesI have a form which won't open properly under certain circumstances if a particular Button is set to visible = false. Under the same circumstances if the Button is set to visiblbe = true the form does open properly or if the line of code at a certain place where it is set to either visible = true or visible = false is commented out or not there then the form opens properly. If any one of the 5 phases on my form are turned on then the problem doesn't ever occur but if none of the phases are on then the problem does occur. I just found a fix for the situation but I still am not clear about what exactly is going on.
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I've created a very simple form with one button on. I need it so when the form runs, it opens in the bottom right hand corner of the screen regardless of the resolution. It also needs to be always on top of all other applications.
When the buttons pressed, i need it to close all iexplore instances and reopen a fresh instance.
I've tried to search for the answer but to no avail.
I am developing a next gen App for my Email Client for future Windows 8 users. Now when i used to use Visual Studio (Visual Basic) 2008 to develop for Windows 7, I used the command "FORMNAME.show()" And that command would open the form.The Problem i am having now is that "SHOW" is not included and im guessing that there has to be another way to do this. For the Beta version of my app, i created a test Button that i want to open a "SplitPage1" the button is called " btnOpen"?Now to give you an idea what i wanna do, i made buttons on the top right hand corner that are called "File , Edit , View" and so on, and when the user clicks file, i want a spiltpage to open with all the options the user would regularly have when clicking file on a menu tab in a program. the options would be lined up on the left hand side when you hover over lets say "New Email" on the right hand side there will be a short description that will appear saying "create a new email to send" and when clicked on it will take the user back to the mainPage and it redirect the browser to "SendnewEmail url".
View 2 RepliesWhile trying to open a form I get the following error:
An error occurred creating the form. See Exception.InnerException for details. The error is: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Previously the form loaded flawlessly. I made several small changes to subs contained in the form, and after that the problem appeared. These changes included some changes in the constructor. I've tried to track down the problem simply by adding message boxes near potential problem areas, and it seems that the exception is thrown before the constructor is even run. The error message baffles me, since I'm not knowingly using any parameters, and the routine opening the form doesn't refer to any arrays (or any other variables).
Here is the part of the source code that the error message refers to:
Private Sub SugNewTagsBtn_Click(ByVal sender As System.Object, ByVal As System.EventArgs)
Handles SugNewTagsBtn.Click
SugNewTagsForm.Show()
End Sub
How I Can open the same form in my application one time only can not open the form tow time in same time
View 5 Repliesthe menu in the button is opened with click in the small down arrow, but NOT if click in the button image.
View 6 RepliesI'm writing an application that imports and tidy up address data into a cleaned, deduped excel workbook ordered in rows with each column as an address field. One of the issues I've ran into is that we sometimes get a workbook where the multiple address fields are held in a single cell with line breaks. I've written code to extract all of this data out of the excel sheet in to a dataset with each sheet as a table and the address fields contained within. I now want to create a new Excel workbook from this data with the address fields in Row and columns the problem I have is I can Open/create the Workbook but when I try to insert a new Sheet (Table) I get an error saying the Workbook is read only....
Private Sub MakeSimpleXL(ByRef DsTemp As DataSet)
Dim dsTable As Data.DataTable
Dim tblName As String
Dim dsRow As Data.DataRow
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Here is the error: System.Data.Odbc.OdbcException: ERROR [42000] [Microsoft][ODBC Excel Driver] Cannot modify the design of table '3 _ 10$'. It is in a read-only database. at System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode) at System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, String
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It looks to me like it is trying to create the table (Sheet) but has the workbook opened as read only....
I'm try on Ultimate version and Express version. Reinstall many time from web install and offline install. What should I do ?
View 10 RepliesI have a project that reference from leadtools 16.5, and after that, i want to run my project..i see am error like it " An error occurred creating the form. See Exception.InnerException for details. The error is: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. im using vb 2008 pro
View 6 RepliesI am making a small game of pong and i want to incorporate a pause feature. is there a way i could freeze the form in place and then unfreeze it later at the push of a button. the tutorial i used is below so check it out to get an idea of what i've made so far.
View 2 Replieshow to move button over a panel from the form in which the button is created dynamically at run-time ?
View 1 RepliesI just want a program compiled in Visual Basic 2008. which can just submit a form of only one field. the form is already uploaded to the server but i don't want to go to that url every time to do so.What I want here, just to open application and fill that field and submit. Is this possible in visual basic 2008?Also let me know how to create a button that can rapidly submit the form repeatly untill the second button named cancel is pressed.
field name of that form is "msisdn" and the action on submit button is post method and url in target is url...
I have a file that I want to automatically open when I click on button. What could I use to code the button?
View 1 RepliesI just want to open a file, like txt.But I cant't open it due to incorrect use of shell.
View 3 RepliesI have already done the creation of button and the dragging of button at runtime already.But now i need to know how do i save the last dragged button on the form and also detect the name of the last clicked button.so lets say i now drag a button to coordinates 25,254. so when i exit the form and the next time i launch it, the button will still be at 25,254. and this one will go on for the number of button i created like 100. so when i launch the form the 100 button will be at the exact position where i last saved them.the second part is lets say i created button1 and button2 on the form in runtime. so when i clicked the first button, it should display button1. and if i clicked on button 2, it should say button2. same goes for like 100buttons.
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