Just inherited a VB forms application that must be modified. My problem is that the controls are placed at the form at the load event. There is no controls on the form when I open the form1.vb in Solution explorer.
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I created a windows form which contains a datagridview. I named one of the columns in the grid 'location' which appears to have generated an error. The problem is I cannot load the form to remove the column as an error is generated and when I load the designer code it says do not modify with the code editor but use the windows form designer.
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I am using this line of code on form load event it is working very fine but i have to problems
1. It replaces the form name and display the date and time but i want to keep both date and time and forms caption separated by some space.
2. When form loads it load the current date and time but the time does not change it should run.
What should i do please please help me code is as follows
Me.Text = Date.Now.ToLongDateString & " - " & TimeOfDay
I am using VB.Net with Access DB. Main form is a Parent MDI. Each form when open first time is slow. It takes noticible time. But, from second time it becomes very fast.
View 6 RepliesI've developed a derived form class that contains various collections of data. Corresponding to this data, I have a series of custom controls which can be linked to said data. I do this via custom UITypeEditors that convert the Custom Controls' Form into my derived Form Class Type and filling in a ListBox with the relevant data for the control in question. When the controls are serialized by the designer, it only stores the index value.
The above all works fine. However, I have found 1 bug that I am trying to work out - which is that, during Design Time, Custom Controls that are placed in sub containers (like a Tab Control) will fire their Load Event BEFORE they are placed inside of the Form. Is there a way to prevent this from happening? OR is there an event which occurs when the Controls are truly placed inside of a form (and not merely a sub container)?
EDIT: Upon Further Inspection, this problem only occurs with the Tab Control and not with other sub containers like Group Boxes, Split Panes, etc.
I'm trying to make a progressbar that shows the load time of the next form.I've tried alot of different ways to do it, but it and the speed is always the same whether the next form loads faster or slower.I'm not sure what variables to use or anything.
View 3 Repliesi have created my own custom propertythe property is of type collection ,it displays a form which allow the user to add a list of images and strings,it stores the data in a collection ,my problem is , i have noticed that after adding items to the collection at design time , there is no code generated in the .Designer file of the form and there for when i close the for / save it and reload it , all the items that i added to my custom property are gone.my question , what did i miss here ? how do i make my custom property generate code at the .designer file for the items i have added to my property?
View 1 Replieswhile this is first time I need to use some kind of database and I think that database is the way to go here while...
I need 'datatable's' that will be filled by user run time in a next way:
-Folder (fixed)
---User 1
[code].....
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[CODE]...............
The insertion part of the form works great. But my problem is in the form load part......If i leave a field blank(Null),then perform Save operation,close the form after successful insertion and then reopen the form,then it retains the previous values during the form load......This is only in case where i leave a field blank in the previous data entry in the database.......But if i enter values in all fields then form load is working great.
I would like to be able to time a page load time in ASP.net (VBscript). Adding Trace="true" to the page directive is nice, but I need to actually time an event and store it in a variable.In ASP it was easy with the Timer object, but in .net I can't find anything on Google.
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Is it possible to load a html document, delete a part (e.g. some divs containers), reload the new html document and show it in a webbrowser? I want to load for instance the helloworld.html and delete the sentence "Hello World!" and reload the new one which should be only white. Therefore all the nodes:
<p>Hello World!</p>
<p></p>
should be deleted.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL]">
<html xmlns="[URL]">
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I'm making a text Editor, that can load unrelated code then edit it graphically using buttons.So far my problem is with replace, I'm probably not using the right context some times it works, most times it does not.
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When ever I add a new entry into the database, it will do it. When I click save, it will save it. When I go back to edit the entry after it was saved the first time, and I hit save again, I get a concurrency violation? It only does it when I add an entry. If I close the program out and restart it again I can save all day long as long as I don't add a new entry. First of all, dunno where the violation is coming from, but I only have a message box on my catch statement on the save button.
I have added it to the database using the following code 100 times and it has always worked:
Me.shuttlerunsbindingsource.addnew()
My save code is:
Try Me.Validate()
Me.ShuttleRunsBindingSource.EndEdit()
Me.ShuttleRunsTableAdapter.Update(Me.ShuttleRunsDataSet.ShuttleRuns)
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Why after a million times of using this exact same code is it not working? It will save all day long no problem as long as I don't add a new entry. Here is my add
Try ShuttleRunsBindingSource.AddNew()
EmployeeInitialsTextBox.Text = lblUser.Text
Catch ex As Exception
MessageBox.Show("UNABLE TO ADD! " & ex.Message) End Try
The message box for the add code never shows so I can't see that is causing any trouble. I am using VS2010 and a local database, not SQL. I just tried doing it again, I added an entry, I saved it, I got a successful message. I then tried to change something and I got a concurrency violation when I clicked save again. I then tried to delete an entry and it successfully deleted it, but when I went to edit another entry and save I got the violation.
how can i edit the list view in run time
View 1 RepliesI noticed when I move the cursor over a word in my code vb highlights all the same words in my code. Is there a shortcut to edit all the words at the same time?
View 1 RepliesHow can I load a form and allow it to run it's code in the form load but keep it not visible. I want it to do what it needs to but but not display.
View 3 Repliesi have a form and i want to design it according to how it was generated for example if it was opened by button 1 then set xx =xx etc
how can i determine how the form was called?
Basically, my app has the main form and a windows form "splash". Let me explain, this "Splash" is a WINDOWS FORM, not a splash form; its just named splash because I want to use it for that reason.In my project settings, my main form is my startup, and the splash form is my splash. This splash form has been coded on a timer for 10 seconds, but when I set the splash form as the splash setting, the form shows up for 1 second and goes to the main form.What I need is to edit the splash setting time from 1 second to x# seconds (preferebly 10)
View 2 RepliesSo I have the following VB.NET code that creates a form field in a PDF using SyncFusion's Essential PDF module:
Dim pdfField As New Pdf.Interactive.PdfTextBoxField(pdfDoc.Pages(iPage), "txt1")
pdfField.Location = New PointF(50, 50)
pdfField.Size = New SizeF(100, 10)
pdfDoc.Form.Fields.Add(pdfField)
This works great except for one thing. When I open up the PDF in Acrobat and look at the field name I notice that it says "txt1-0". Now I can't figure out where the "-0" is coming from and how to get rid of it.
how to get the "windows form generated code"? I've tried double clicking all things I put in the form but it doesn't generate any default code...
View 1 Repliesknows how to display autogenerated id on textbox in a form?for exampleif i have 2 textboxes
1st txtbox is for CustomerID
and the other is CustomerName
when im gonna add a new record
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Most of my project was imported from an older version of VB (now I'm using 2008). All of the forms had a "Windows Form Designer Generated Code" that I could expand at the top of the form's code. When I created a new form, that was not there, and I found out that in the solution explorer you can "view all files" and expand the form and look at MyForm.Designer and that has the same type of instantiation code. My question is, is there some way to update the old ones so they too do not have that "form designer generated code" at the top?
View 1 RepliesI've got a form with a TabControl. PictureBoxes (containing thumbnails) are added to each TabPage thru a loop. A click event Handler is added for each PictureBox. When a PictureBox is clicked, a new form is created thru code and a PictureBox is added to it that shows the pictures enlarged. What I need is to add another Handler to the PictureBox in the code-generated form so that I can rotate the pictures because some of them (photographs) were taken with the camera at 90 degree angles from vertical. I've tried to come up with a solution but I always run into the problem of the PictureBox on the code-generated form needing to be declared WithEvents before a Handler can be added.
Code for adding PictureBoxes to TabControl:
'Variable p declared public withevents at class level
p = New PictureBox
img = Image.FromFile(Path.GetFullPath(picfile))
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I use the code about video capture of this site, it ran very well ! VB Helper: HowTo: Capture video from a video device such as a Webcam with VB .NET But I want to change the interface of form then after I customize my new one with button, picturebox (with the right name), copy the code again except this paragraph #Region " Windows Form Designer generated code "
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I was unable to see the code generated by vb for form initialization automatic code generated by vb how can i see it?
View 1 RepliesI have a project with multiple forms that are used to edit tables in a project data source (access DB). All the forms work fine, except the ones that use designer generated lookups.
When I am editing a row in a bound DGV on the lookup forms, they function fine, and the save button works fine. However, once I go to close the form it starts throwing "System.ArgumentException: DataGridViewComboBoxCell value is not valid." multiple times.
I've created applications similar to this in VS2008 without any issues.
I have an existing vb.net application which uses a home grown database. The database has over 60,000 unique multi-field records in it.The user can search in each field using drill-down to find a record, and then can add that record to a separate database.(60,000 collectibles described in a master database. User can drill down by category, manufacturer, year produced, etc. to find a record and then add it to their own 'collection', 'wanted', 'have for sale', or 'spares' database for record keeping.)
Instead of having them drill down, I would like for them to be able to perform a search and have all of the results (any amount of matches from 1 to 60,000+) appear on a scrolling form with a checkbox next to each so that they can simply check any that they want and do a mass add to their list databases.
The part I cannot figure out is how to have vb.net (2008) create a variable length scrolling form with the results, and how to identify the checkboxes (generated by the system for search matches) to see which, if any, have been checked by the user.
I would like to load a default created image at start. But seems to not be working on form load any ideas.[code]
View 5 RepliesMy c++ app (which has both managed and unmanaged dlls) loads very slow ( > 70 sec) during first time startup. After that it takes 20 sec only during startup. Why? How to make it faster always?
I tried with /Delayloading, rebase etc. It did not give much improvement. In fact after rebase it took more time. note that my app has more than 150 dlls
I have forms in diffrent project but in same Solution which is a dll project. I want to open (show) forms on button click event in another project. I am doing this without any problem. But it takes little time to open. I want that I could make these forms or dll files on Standby mode. I mean if I call them, they open quickly.
I m using this code:
Imports Transactions 'Transaction is my projects name from which I want to call forms
In Button Click Event
Dim FrmDrVouchers As Transaction.FrmDebitVouchers = New Transactions.FrmDebitVouchers()
FrmDrVouchers.Show()
