In some of the forms ,whenever i change some properties using the Properties Window of some controls or the form they get reflected in the Properties Window but will not get changed at Run Time.
I am facing this in quite many of the forms, hence i am applying the property changes in form load, this is causing performance breach .
In a VB.NET winform App I want to place icons on each tab header of a TabControl.I set the ImageList property of the TabControl and for each Tab I set the ImageKey property.My icons show as expected on each tab at design time within the IDE but when I run the App, my icons don't show (an empty space is shown instead).
View 1 RepliesI have a small dataset which has most of its schema defined at design time, but I add a few columns to one of its tables at runtime. My problem is how do I reset those changes? he dataset is not linked to any datasource. It just has its own table which I "manually" populate. The static columns have been added to the datatable at design time. However, I add a few columns as runtime based on a list of categories. Like this:
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The dataset is used in a small dialog that pops up within my application. I add the dynamic columns when the dialog is opened by using the Load event. Everything works great the first time. But if you close the dialog and reopen it, there are problems. My startup routine tries adding the dynamic columns again, but an error is thrown saying the column already exists. I have tried a lot of things and did some reading but I can't figure out a way to reset the dataset when the dialog is closed. The only solution is to close the whole application and reopen it. I have tried the following in the Leave event of the dialog form:
[Code]....
I use try catch finally to handle errors in my program. And these work fine when i debug application, but when i install it, error handling does not work?!
View 1 RepliesI want to ask a question about adding controls in design time (controls may be any win form control or a user control) and adding the control in run time.
View 2 RepliesI've created an SQL Query using the query builder. In the query builder, you can test the query by clicking the button "Execute Query", and entering the desired values in the parameter fields.
My query returns the correct results when I do this, but when I seemingly pass the same values at runtime, I get 0 records returned.The query is designed such that you can pass nulls if you don't wish to filter data by that particular parameter.
SQL Query:
SELECT ID, UPC, Quantity, Manufacturer, Style, Color, Size, Category, DateReceived, Cost, OriginalRetail, Retail, LocationID
FROM Inventory
WHERE (UPC = @UPC OR
[code]....
In the query builder "Execute Query" dialog, I enter a value I know that the db contains in the "Size" field, "1/1/1900" & "1/1/2199" in Dates A & B, respectively, and nulls for all other fields. This returns 1 record, which is just as I expected. It works correctly.But when I pass the same values into the method created by the designer, I get 0 records returned. I can't figure out where the problem lies. Even if I enter nulls for all fields other than the dates, it returns 0. This tells me that the dates are causing the problem, but I can't figure out why, because I'm passing strings equivalent to what I entered in the query builder.
I'm using .net 2008 Trying to create a small graphic component, I have a problem setting background both at design time and then runtime. I derived a panel like this
[code]...
But it isn't working! If I don't Overrides Property BackColor, this is working as expected but I really need to group in my custom tab.
Is it possible to create a menu at design time and populate it at run time and then display it at the mouse pointer when I click on a cell in a datagrid?
View 11 RepliesI am creating a custom Label control (by simply Inheriting the standard Label control and re-painting the background and text) because I need a very specific background and border. In the constructor of the control, I set the AutoSize property to false so I can have a standard default size for the new label.
Public Sub New()
/*Set the default size of the control to 75x24*/
Me.Height = 24
[code]....
In my application that uses this control, if I create the new custom label at run time (in code), the AutoSize property stays False, and it works properly.If I try to add the new custom label to my form at design time, it comes in with the AutoSize property set to True, and I have to manually set it to False in the properties window. It's not a huge problem, but I don't understand why the behavior is different.
Recently, I've been running some tests with C++ and VB.NET to compare execution speeds. In the last thread I posted, I talked about how I had encountered the fact that C++ was executing just as fast as VB, but got that issue resolved. Now I'm hitting my head against another wall:I had made a DLL for VB.NET to test out this theory and compare in just one program side by side execution time of identical VB.NET and C++ code. But the interesting thing? VB.NET's execution time improved such that it was now exactly identical to the execution time of C++. Spending some time with the problem, I discovered that the "Target CPU" option in advanced compile options in Visual Studio 2008 was the culprit!
Since I'm running 64-bit Windows 7, I figured making the target CPU x64 would yield the best execution time. Wrong. Here are the results in execution time of a Windows Forms application for VB.NET,calculating all the prime numbers up to 10,000,000 and getting their sum.
Any CPU: 15.231 seconds
x86: 10.858 seconds
x64: 15.236 seconds
Below is the code I'm using, feel free to test it yourself:Public Class Form1
[Code]....
New to reports here. Using VB.NET, my application makes use of datatables it creates from a postgresql database.These datatables are defined at runtime rather than design-time, and I would like some way of generating reports from these datatables at runtime as well.
Should I be trying to create the report template at design-time, and then "binding" a datatable to it at runtime?
i have a treeview which has a bunch of parent and child nodes preset at design time, there is 1 parent node tho which is called developer, that i want to add child nodes to at runtime.When the form first loads im trying to have it check a text file and for each line in the text file add the text/string from that as a child node tot he 'developer' parent node.
vb
Dim reader As String = My.Computer.FileSystem.ReadAllText(Application.StartupPath() & "ConfigDevs.txt")
Dim strs() As String = Split(reader, Environment.NewLine)
For Each s As String In strs
[code]....
Thats what i have so far, how can i set it so 'Dim parentNode As TreeNode = ' points at the 'Developer' node?
using VS2008, targetting framework 3.5I have a rather complex UserConrol which does some of its own rendering.I display this UserControl on a form.Opening that form in the Designer creates an instance of the UserControl in the Designer, which tells me a NullReferenceException is occurring in one of my rendering methods.I have attempted to correct this by making alterations to the UserControl's default constructor, but have not found success.
View 1 RepliesJust started with VS2010. (vb)
Coming from VS2005. (i skipped VS2008)
My question is this. Why do I have to hit save before every build in order to see design changes at runtime? Example: I change the text on a button at design time. I click on run and the text does not reflect the change. But if I saved the form before clicking run, than it does. Also like to add VS2010 runs much slower compared to VS2005 running on the same computer. I understand VS2010 can do more, but a lot of times you don't need it to.
Converted an VS 2003 VB Application to Visual Studio 2010. Conversion seemed to work great. Having trouble with the Backcolor of buttons. In design mode they are a light gray (I have them set to transperent and they are on a VBPowerPack.Blend Panel) - but in Runtime they turn the correct color (Steel Blue). How do I get design time to look the same as runtime? Also, they stay light grey in run time if I check Enable XP Styles. Makes me feel better to see the same colors at Design time
View 1 RepliesI have a question regarding the manipulation of a form at runtime. Let's say I created a simple form in the form designer before runtime containing a couple of buttons, text boxes and labels. While the program is running, I would like to change properties of these controls, while having the ability to move them around, along with the addition of newer controls, say a listbox.
After the form is 're-designed', I would like to save the new settings of my form, in either a database or settings file. Whats the best way to implement this?
For some reasons that I don't understand all my design changes won't show up when I hit F5 and run the application. I can put how many new fields and labels with som "hello" text that I wont but they are not displayed at runtime. But all database changes the report i connected to will be displayed.
How can that be? What is wrong with my report when all datachanges runs thru but not my design changes?
I am using VS 2008 and the built in crystal report and viewer.
[Code]...
Im having odd problems with how my form is displaying at runtime...if you look at the 2 attachments you can see at runtime the labels disappear under the check box's, but at design time they are positioned perfectly.
View 5 RepliesI created primary/start up Form for my VB2005 app (called Admin.vb). Now when I go back to the solution explorer, I can see Admin.vb but it doesn't have the form icon and clicking it doesn't open the form. Instead it opens the code.All of my other forms are fine and have the right icons and open in the [Design] view ...The form obviously still exists as it opens in runtime but I can't seem to open the design view for it.
View 6 RepliesI'm a newbie in visual basic dot net. I tried to create a design in run-time. Here's my simple code.
Dim frmLogin As New Form
Dim lblUserName, lblPassword As New Label
Dim txtUserName, txtPassword As New TextBox
[code].....
I work with VB 2008
I need to design my reports by users
please tell my the best way,or the best report type
How do I test for design time? The following code works during RunTime but fails in Design Time?
I assume it is because there isn't a Me.Parent.Name at design time.
Dim strGetColors As String()
strGetColors = fncGetColors(Me.ParentForm.Name)
[code].....
I want to have a bunch of different screens, yet I don't want to have to use 20 different forms (I'm pretty sure that's bad practice anyways), and I don't want to lay down all the controls at once in the designer because then things get messy. I had an idea of running a sub on startup that would dynamically generate all the controls I need with all the right coordinates and settings, and then dump al the ones needed for a specific screen into a Panel. Then I return an ArrayList of panels, and pull out the correct panel to attach to the form when I need that screen. The only problem is that my form will not have any implicit knowledge of its controls, so I'm assuming I wouldn't be able to use the WithEvents / Handles. keywords to declare handlers in the form class (which is what I'd rather do).
View 3 RepliesI want to bind Grdiview with DB.I have a table Products with three columns.Suppose I add three columns at design time in gridview, If I run my following code First Three columns are blank & next three columns are bind with data.
Suppose I do not add any column in GridView & runs the foll. code,then the output is coming correct.
But i want that I add columns at design time
[Code]...
OK i have a combobox on the form. I have entered 4 values. I have left the TEXT field blank.Is there any way i can set the default SELECTEDINDEX of the combobox in the form design window. I know how to do it using code. If i set the TEXT field to one of the item values will it automatically select the corresponding INDEX
View 1 RepliesI created the dataset and connection to my SQL database at design time to make it easy to drag and drop bound controls and stuff to my form. My problem is this, when I did this it creates the connection string in design time also, but the connection varies depending on where the software is installed after the development.My question, is there anyway to set up the bound controls on my forms and everything with the typed dataset created in design time on the connection created in design time... then when the application is run, can it change the connection string at run time to get it connecting to and creating the dataset from the the correct sql database?
View 1 RepliesI have a problem. I have created a control, Now whenever I am going to Drug that control on my form then a error popup will appear that says "Failed to create component 'XXXXXXXXX'." System.IO.FileLoadException: A strongly named assembly required. HRESULT: 0x80131044 Is there any facility available in .NET for design time debugging Means If I drug a control on form then I will allow me to debug the control.
View 1 RepliesI have the following errors displayed at bottom of my Visual Studio.However, I do not actually have ANY error when I run the app.
Dim storyboard As Storyboard = Me.FindResource("Show Entry")
storyboard.Begin()
''''''''ERROR'''''''
[code].....
I'm making a quite large database management program(well actually 3 databases) and I am going to be creating a tab page for each database and under that a tab page for each table. each database has +- 200 tables and each of those has between 10 and 50 columns. I am also gonna put controls on each tab page of a table that represent a a row of data.I need very specific tooltips, functions for each table so generating it would be to complicated for me.
I need a automated way of creating controls on design time depending on the column datatype like a rich edit, text box or numeric up or down. and a label that has the same text as the column name It should also rename the name of the control to something appropriate .This can be done using visual studio's database wizard, but last time when I was about 30% done with one database it had already auto generated more than 1000000 lines of code. When I ran my program it took 10 minutes to show the first form and I have a powerful pc.
I vaguely remember something about a hotkey or menu that would group controls together at design time so you could drag 2 or more controls around and they would remain relative to eachother. You could work on something else and come back and the controls would still be grouped.
Does anybody know what this feature is called and how I can access it?