I am developing an application with VB.net and SQL Express. In my application I have many forms as : some of my forms are :
Mainform
selectmonth_form
Form_report[code]....
Forms load normally and also show all data in form_report. With this code these forms open as new windows, but I want to open windows as child window.
I am in the process of upgrading a VB6 Project to Vb.net. My problem is that when I open a child form in my project from within the Parent form a new instance of the Parent form is created. The code is fairly simple:
frmnewContract.MdiParent = Me
frmnewContract.Show()
I must have inadvertly messed up my data connection but not sure how to fix it. when I check the table adapters I can view data but when I load the app I get these errors and no data loads, how can I look at this log and make sense of how to fix this?
************** Exception Text **************
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Only one <configSections> element allowed per config file and if present must be the first child of the root <configuration> element. (C:BungeAppsBunge Post InstallerinDebugBunge Post Installer.exe.Config line 7)
[code]....
I am trying to open a MDI child form in some presenter class. In the form load handler I perform a number of initializations. If any of them fails I want to cancel opening the form. The current code does not prevent the form from opening.
Private Sub OnFormLoad(ByVal sender As Object, ByVal e As System.EventArgs)
Try
Me.mGridBindsource = New BindingSource()
[Code]....
I have an MDI parent screen that loads on startup and a lot of child forms that load when opening. So as the child forms load there's a lot of flashing and it looks really ugly. Once they're loaded all I have to do is use a bring to front, maximized command and it works smoother than closing a form and opening a new one every time a different form is selected. I've tried creating a splash screen, minimizing the forms on load, etc and everything still works in order so first the splash screen then the forms load.
How would you set it up so a splash screen stays on top of all other forms for like 5 seconds while the forms load in the background without seeing them load? Right now the screen shows then when it's done it moves on to step 2 which is loading the child forms. If no splash screen, how do I make it load so you don't see all the child forms opening at once?
Whenever i start my form (window application) and link from one form to another, my data doesn't load but when i close the respective form and open it again , it appear. Can i know where is my problem ? Thx in advance. Here's the code snippet :
Private Sub AccessControl_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim sqlstring As String = "select * from depttable"
Dim connection As New SqlConnection(db.cs)
Dim dataadapter As New SqlDataAdapter(sqlstring, connection)
[code]....
I have a bindingNavigator and some textboxes connected to the bindingsource, in a childform, a form inside another form.I have a third form, a search function, and I need to change the bindingNavigator Position, when I choose a number in my "search" form.I have some code in my "Search" Form, but I caannot get it to update the bindingnavigator in my child form:
Dim IndexNumber As Double = Me.TblMainVoyBindingSource.Find("ID", Me.TblMainVoyDataGridView.CurrentRow.Cells(0).Value)
frmEditVoyage.TblMainVoyBindingSource.Position = IndexNumber
[code].....
in An MDI form , i make a childform with textboxes. these textboxes are produced by the code, like this:
For i As Integer = 0 To number Step 1
Dim TextBox As New TextBox
ChildForm.Controls.Add(TextBox)
[Code]....
In another sub within the MDI class i want to read the data from the textboxes, but got an error that says txtBox1 is not a member of 'WindowsApplication1.Form1'.This is true because they do not exist yet. How can i handle this? I think it has something to do with "delegate and invoke", but this seems to be hard to understand.
i create a mdiparent form and a form1, all i wanted to do is to close the mdichild form(form1) with a close in the menustrip.When i want to close the opened childform with menustrip (i create a button close in the menustrip)
View 10 RepliesI have an mdi project that has different toolstrips for different child forms. how I can have them merged into the MDIParent toolstrip as they show within the Parent. have all the toolstrips on the MDIParent and enable/disable depending on the childform?
View 8 RepliesI has 4 form
1. Main.vb (IsMdiContainer = T)
2. Form1.vb (has textbox1 , Button1)
3. Form2.vb (Has button1)
4. Form3.vb ( has textbox1, button1)
i start with Main.vb, and show Form1.vb (
code :
dim frm1 as new Form1
frm1.MdiParent = Me
frm1.show()
at Frm1 i has 1 textbox (textbox1) and button1, if i clickk button1, form2 show with dialogform
at button1 click
form2.showdialog()
in form2, i has button1 if i click, form3 show with dialogform too
code
form3.showdialog()
in form3 i has textbox1. and button
if i clock button1. i'll put textbox1 value into form 1 textbox.
code : at button1 click.
form1.textbox1.text = me.textbox1.text
but the textbox1 in form1 not has value ?
I already set this code up but still no luck.
childform = PIS
childform.MdiParent = Me
childform.Show()
[Code].....
See the image. Both border of the form is set to none and their control box also and maximize,minimize box.
I have one table and one dataset namely Registration.db and IGregistrationDataset I created a Registrationform, from it, I load a second one namely complaintForm by parsing the current Registration_ID.
From ParentForm (registration) i did this:
Dim row As IGRegistrationDataSet.RegistrationRow
row = CType(CType(Me.RegistrationBindingSource.Current, DataRowView).Row, IGRegistrationDataSet.RegistrationRow)
Dim frm As New ComplaintProfile(Me.IGRegistrationDataSet, row.Reg_ID)
[Code]...
I have a couple of tables in a sql server database and i want to load the data from them in form load.
Here is the code i use to load the first table
connection string here
Con.Open()
Dim objCmd As New SqlCommand("SELECT * FROM Customers", Con)
Dim cust As SqlDataReader = objCmd.ExecuteReader()
[Code]...
I'm trying to accomplish something and not sure it can be done or rather if I'm approaching it correctly. Is there a way to access a MDI Parent's menustrip without merging the childform into it? I've done the merge before and that works fine. Reason I'm trying to figure this out is that I've started toying with a windows ribbon control and am wondering how the menu functions are performed with this control. In other words you wouldn't create one on each child form and have some how merge them so there must be a way to do this from the parent control.
Things I've tried thus far are to create a public sub in the childform that will save the data to a database. Once the save button is clicked in the mdi parent's menustrip and determines the activechild it will then call that sub procedure on the childform. However it doesn't persist the data, in other words passes a whole lot of nothing to the database even though the values don't dissappear on the child form.
Even i have use the "BringToFront" keyword for the childform but its not working. The buttons on the main form are still displayed above the childform. But when i open another form from the childform, it is displayed properly
View 1 RepliesI have 2 FormsOne is my mainform, one is a "child" form.The childform has no control box.he mainform has a toggle button to show and hide the childform.
Private Sub ButtonShowHideChildForm_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonShowHideChildForm.Click
If ChildForm.TopMost Then
[code]....
My application having one mdiform in that form six child forms are there.Switching of one form into anather form blur bars are appearing form at the title of every opened child form.These six child forms are opens in mdiform.how to remove the blue bars are appearing from every opened child form in mdiform.how to remove these blue bar.
View 7 Repliesive been trying to get statusstrips merging so i can click a label to bring the child form to the front when i have multiple childforms open. I have this code which does work but on closing it leaves the label on the mdiparent and also im struggling with the bring back to front code. i dont want it to open another form just bring it back to front. I have statusstrip set to visible false on my childform. heres some code for merging, this is in mdi parent:-
Private Sub Form1ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Form1ToolStripMenuItem.Click
[Code]...
Base form baseForm generate an array of childForm (3 fo them). I have one event handler in baseForm which is called when user close each childForm. The problem is that this event handler is only called when the last childForm is closed. When other childForm is closed, the event handler doesn't do anything.
View 7 RepliesThe Parent has a Tool Strip and on the tool strip is a button that when clicked loads the child, this works fine.But when I set the child form to maximize its title-bar jumps over the Parent tool strip. Pushing it down a bit. I do what this. I would like the child to be completely contained within the Parent including the Parent forms tool strip.
View 6 RepliesMy application having one mdiform in that form six child forms are there.Switching of one form into anather form blur bars are appearing form at the title of every opened child form.These six child forms are opens in mdiform.how to remove the blue bars are appearing from every opened child form in mdiform.how to remove blue bar are appearing from switching of one childform into anather in mdiform using vb.net?. how to remove these blue bar.
View 1 RepliesI have this program that uses OLEDB connection to open the excel file, and imports it's data. Then I use mysql connection to inserts all this data. Now my question is, is it possible that I can use mysql connection in opening the excel file, or only OLEDB connection is the most possible way to open it?
View 2 RepliesI have a form which has my main data. On the form is a button to open another form called AccountNotes.
The table keys are as follows:
tblAccounts
pkAccountID
AccountDetail
etc etc
tblAccountNotes
pkAccountNotes
NotesDetail
fkAccountID
When I open the form AccountNotes how do I ensure it is tied or bound to the main form record I am viewing?
I need code for opening DB connection using an ODBC data source. then I need to get some data from there to a data set.
View 7 Repliesi'm having trouble opening a text file to process and order the data in it. When i try to read the first line of characters an error message occurs saying: 'Variable words1 is used before it has been assigned a value.' I dont understand what i am doing wrong when opening the file. Also, I am sorry if this is a rather basic question.
[Code]...
I am trying to set up a program that allows you to open multiple COM ports and then select which COM port you send data down. The computer i am using has 18 COM ports. Also on the first code it shows the ports are open they just wont receive anything.
[Code]...
Is there any other way to access a serial port using visual basic.net 2010? I followed the steps in this site, [URL] but I just got this output Open the serial port. Send the attention command to the modem. Wait for data to come back to the serial port... and stopped there. I can't get the Read the OK response data in the serial port. Close the serial port. And I was thinking, because it is very much easy to access serial port in vb6, so can I just use vb6 and then connect to visual basic.net? it is like a language inside a language.
View 3 RepliesI am puzzled by a delay in my data appearing (sql sever) when I open my program. (this can be around 5 to 6 seconds). If I open it a second time it appears instantly, have I done something wrong, or not done something. I have connect to a MS access database that connection is instant always.
View 12 Repliesi hve create combobox & text box and add database source to my project...i know how to binding data or load data to combobox using SELECT query..but can i change SELECT to INSERT query cz i wont when i type data into textbox,data will be in database...second..can i binding without add database to project..i mean mydatabase in debug folder..i hve problem binding data if database is not in myproject..
View 7 Replies