i'm making a vb aplication (only my second one so dont be to cruel) and i'm just wondering how to make it so that when somebody closes my aplication down and open it back up it restores it to the same state, i've had a look on google and the only thing i can find are how to remember the size and position of the form using the registry and also using flat file databases to hold the values of all the text box's but is there an easier and more elegant way
How do you restore a dataset to the previous state before updating the database with a data adapter? I have a concurrency update problem that I believe to be caused by this. The update fails during the update and a rollback command is issued using a SQLTransaction object. However, now the rowstates of the rows that did not have errors have been changed to unchanged. So this record is no longer availible to be inserted into the database. When I updated the value that could not be null and then test the second update which runs just as the first does then I get a concurrency error. The update code is below:
If i use the form.showdialog method to open a form, then input data.. when I close the form then re-open it the data is still there.Is there a way of restoring the forms original states, as it is on load?
Essentially what I want to do is copy a WebBrowser object such that I can do the equivalent of "Open In New Tab" or "Open In New Window" actions, maintaining any posted data. I don't just want to navigate to the same URL as in the original WebBrowser object, rather I want to repeat the HttpWebRequest.
I've created a "Loading" borderless Form that's displayed when loading records etc. I'm using the following to keep the loading dialog centered within it's parent.Works great except fo when the form is minimised estore- The loading form appears instantly while the parent (Owner) maximises with the usual VistaWindows 7 animated maximise.
What would be the best method to prevent the loading form appearing before the main form?
I am checking to see if a textbox contains a number, or is null. If it is non numeric or null a message box appears asking the user to input the proper value. When the user clicks OK on the msgbox the program will continue to execute the code. I want it to stop executing the code and revert back to its default state as it would be if you just opened the program. What is the command for doing this so I can add to the if statement?
Dim numCheckV as boolean numCheckV = IsNumeric(Vinput) If numCheckV = False OrElse TextBox1.Text = "" Then MsgBox("Please enter voltage!") End If
I have a code snippet that I want to run when the app is closing. So, I used FormCLosing event. But now i wanna place a confirmation message for exiting. Like, if the user clicks the Exit(X) button, there'll be a prompt, if he clicks NO, then the app will not close and revert to previous state. Now I find that hard to achieve using FormClosing event. because it'll get executed no matter what button the user clicks.
I have several forms that are "reused," or vistited more than once per each time in the whole program. In VB6, using Form.Show() would show the form in its original state (the state is was when created in the designer). After closing this form (Unload Me), showing it again would still show the form in its original state.
I am coding in VB.NET 2008, and noticed that when I reopen a form I had closed during a session using my program, the form is in the state it was when I closed it (labels and listboxes filled with data), and not in its original state. I currently have the Form.Closing event filled with code to clear all of the controls, but I think that there must be a better way to "clear" or "reset" the form.
recommend the cleanest way to save / restore a winform's location and state? For some time now I've been using a method similiar to what I posted below (based on the CodeProject: [URL]..The problem with this method is that when the form loads, it is drawn in an initial location, then moved / maximized afterwards. The effect creates somewhat of an eye sore watching the window draw, then quickly update... but in Vista it is a lot more obvious.
What I would like to do is restore a form to it's previously saved location / state invisible to the user, then show it once it's where it needs to be. Or, just know of the ideal way this is supposed to be done - specifically in Vista.
I m working on a windows application using VB.NET. Using borderless forms. Can anybody tell me how to minimize / restore that application by clicking from taskbar. (I already added minimize button into the form
I am building a data entry form. I have code that runs when the 'submit' button is clicked to check that all required fields are populated; if not, the missing fields are hilighted in red:
Sub validatefields() saveOK = True If Trim(Me.cmbBillCat.Text) = "" Then saveOK = False Me.cmbBillCat.Appearance.BackColor = Color.Tomato End If
My problem arises when I want to reset the color back to normal. In my form when you click Cancel or move to a new record, all fields are disabled (set to read only) until the 'Edit' button is clicked. Visually this is represented by the field backgrounds being gray. VB.Net automatically changes the text box/combo boxes backcolor to gray when I disable them. However, once I have explicitly changed a control's backcolor, thereafter disabling it does not change its color to gray.
[Code]...
I have tried changing the backcolor to System.Drawing.SystemColors.Window, but the problem is the same. The control whose color has been changed is disabled (won't accept entry) but the backcolor remains white, no matter how many times DisableFields() is issued.
I have created an app which has a timer control which, when activated and meets a certain criteria, launches a second form with an alert for the user to review and action. this works just fine. Except.... when the main app is minimised and has lost focus, instead of launching the second form to a normal windows state it opens and sits in a minimized state itself and just flashes. How can I get the the second form to restore to a normal windows state?I have tried form2.focus and tried the windowsstate=normal etc but I'm still barking up the wrong tree.
I have a menustrip, in which i have put a BACK option so that the user can go back directly from where he came to the current form, as there are many form which leads to the that particular form.
I have following codes on lostfocus of textbox1.text to search values. It works fine but how to navigate database. I mean what codes should I use for Next Record and Previous Record Buttons. My SQL database name is accounts and table name is employees
str = "select * from employees where sno =" & Val(Me.TextBox1.Text) dt = GetTable(str) If (dt.Rows.Count >= 1) Then Me.TextBox2.Text = dt.Rows(0)("name") Me.TextBox3.Text = dt.Rows(0)("city") Me.TextBox4.Text = dt.Rows(0)("phone") [Code] .....on
I have a project with several forms. I need some of them to be in a modal window. How do you set this to be true? Also, when some of the forms are shown I need one of the buttons on the previous screen to be active.
I have tried:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Form.ShowDialog() Button.Select() End Sub
is there any way to populate a listbox with totals data from previous pages? I'm working on a project for a class where the final form needs to have all the totals from the previous 3 pages (each page has one total each), in some capacity (so I do not necessarily need to use a listbox if there is an easier way to do this).One thing about the previous 3 forms, two are set up in radiobuttons and one is set up w/a checkbox format (but I will likely change the radiobuttons over to checkboxes as a later revision).I just can't figure out how to populate the listbox with info from a previous form, I keep thinking load events, but that doesn't take into account which options might be taken from previous forms.once the totals from the previous forms have been added to the final form I will need to add a 7% sales tax. I assume that something such an if then statement will take care of that though.Just wanted to run that everyone here at the forum just in case there is a better way to do that.
I have added two checkbox controls chkBox1 and chkBox2. What I want to do is that when both the chkbox are same meaning checked or unchecked the label should be On and if both are not same label should be Off.
How can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.
is it true that if the AllowEdit property is set to false, any DataGridViewComboBoxColumn that my DataGridView has will be in a "disabled state" (will not allow the user to change the value of the DataGridViewComboBoxColumn) AND there is no way i can make it in an "enabled state" unless i switch the AllowEdit to true?
I was trying to improve my graphics. I have imported a picture on my resources. Then I don't know why all went wrong and it doesn;t regognise the resources.When i debug, like always it runs when all are fine and ok with not errors. Can I restore that debug?
I have used MS Backup to do a file backup of my entire computer. This completed without error. I needed to restore one page in an ASP.NET application to the version in the backup.
I used the Restore Files option and saw my Page.aspx file and it's Page.aspx.designer file. I chose the two and restored them.
When I looked at my application, however, Page.aspx.vb and Page.aspx.designer.vb had been restored (ie. the page behind's but not the pages themselves)
