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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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.
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 a picture box in which I type some letter on capturing keystrokes.The problem is that at Form Load, the focus is on the buttons available on the form. How can I keep the focus on my Picture Box at form load?
View 2 RepliesI have been trying to install VB2010 Express, which directs me to uninstall VS2010 Beta. I have been primarily successful in this, but I keep getting error 1402, as follows:Form "Microsoft Visual Studio 2010 Professional Beta 2 Setup - Update Page":
Uninstalling Components:
[completed - check] Microsoft Office Development Tools for Visual Studio 2010 (x64)
[completed - check] Microsoft Visual Studio 2010 Professional Beta 2
[pending - double bar] Microsoft Visual Studio Macro Tools
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In my project, form_double Click and Form_Maximize is not working when i do break point. Its not Button_Click, Form_Load. I want to do like this. "My project design form grid column size is small when form load and want to be large grid column size when the form is maximize."
View 1 RepliesOk i have a weird issue. I cant figure out what to use... CSV has two colums :-Name, MobileJohn Doe,60002000Jane Doe,Now i would like to delete the whole line if mobile number is empty.. i cant figure out what to use. Mobile number are 8 digits long.
View 11 RepliesI'm trying to load a datable into a datagridview, but column1 ("date") should be converted to a datetime, so I can sort it when I click on the datagridview header. I tried this, but it gives me that there is no column 0 or one. I have 2 columns: "ID" and "DateStart"
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I am sending XML externally. One of the node called "datafield" has an element called "value". This may contain normal text content, or an html content (which I need to wrap in CData). So, I created a base class (ProvisionDataField) with 2 classes inherits from it (ProvisionTextField, and ProvisionCDataField) as follows:[code]
View 3 RepliesI am facing another error "An error occurred trying to load the page. Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND) )" performing the following scenario:- Opened a sample VS 2010 WPF project that I receiveved from a co-worker (Project compiles, and run on his machine)I tried to open project properties (Project --> Properties)The project properties panel/window didn't open, all it had was an error symbol (red/white X) and the error message above(HRESULT: 0x80020003).I am unable to view niether the designer window nor the code window (no messages are reported) but the pane where the code/design shoud display is empty, all you can see is the background color.
View 1 RepliesI open a form using .showdialog and load some info onto it. I have code that runs on the MyBase.Load event. Basically, I have a Try, Catch, End Try block and if the Catch executes in preparing my information, I want the form to stop loading i.e. give a message and not show at all.
View 20 RepliesI want to load a child form which is a login form by default when the parent form is loaded.Right now when I click new file on the toolbar of the parent form, then only the login form is loaded but i want it be loaded by default without clicking anything.
View 10 RepliesI am after some code to load another form when the user closes the current form. I have tried this
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I have the following code in the Load event of my form and the 3rd statement obviously fails. My question, why does the code fail and not tell me about it? In other words, it fails and then simply displays the form without crashing. It also doesn't execute my 4th statement.[code]...
View 12 RepliesI'm getting this error on a datatable.Load() :
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
If I use a DataAdapter it works fine, using the same SQL query.
I have created a Stored Procedure in SQL which produces a pivot table. I've successfully created a GridView in ASP.NET to display this data.
However, some of my column headings are dynamically generated from the data (AutoGenerateColumns=True), and those column headings are just dates, so they will look different almost every time the table is generated.
This all works fine, except that the date format of the column headings is wrong. I know I could change the way SQL produces the dates in its output, but I don't want to do it that way. I want to control it from the web page.
I didn't think this would be difficult - I thought I could just do something along the lines of finding the cells in the header row and changing the datastringformat. The problem is that whether I put my code in the GridView's DataBound or RowDataBound event, the cells in the header row seem to be empty, so I can't reformat them. It's as if the headers get populate some time AFTER the DataBound event, but I don't know when or how to trap it.
I have a code which when used, firstly application will run the Splash Screen application. Splash Screen will be active for several second, and then the main of application will show in full screen. Before the user use the application, user must Log in first. This works but the problem is that it loads the splash and login form twice. To worsen the situation, the second login form that appears gives access to the system even when the cancel button is clicked while the first login form just works fine. My codes for the three forms are as listed below:
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I have a form which has crystal report viewer. On form load it gives the following errorAn error occurred creating the form See Excpetion.innerException for details. The error is :Could not load file or assembly 'CrystalDecisons.Windows.Forms, Version = 10.5.3700.0, Culture=neutral, PublicKeyToken = asdad or one of its dependencies. The System cannot find the file specified.
View 7 RepliesIm trying to make a program that loads the first image in a folder then shows it on the picturebox1 then the user will press next, and that image will be moved to a foder named viewed. I got the code to move but I get an error saying that image is being used in another application. Here is my
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I am trying to code an Auto clicker in visual basic and i am having issues that i believe involve user32.dll..
View 9 Repliesi'm having a few small problems concerning my MDI child forms.
1). I have a panel that is docked to the parent form so i can change the background colour of the parent form. (the background property doesn't seem to work on MDI parents).But my childforms appear underneath this panel, is there a way to make them appear on top of the panel? (i've tried using .topmost = true).
2). Is there a way to remove the 3d border style of a MDI parent form?
I got the below code from Deborah Kurata one of the msdn moderator on her webpage. Her code is to save the form size at runtime but i would like to modify it to save the buttons which i have dragged and drop. I tried to modify the code but i tend to when i put the Dim theButton = DirectCast(sender, Button) under the form load method. It put there cannot cast object. something like that.
Public Class Form1
Dim tm As New Timer
Dim Index As Integer = 0[code].................
I have a DataGridView which populates from an SQL query just fine in default mode
using these table names
[firstName] [varchar](20) NOT NULL,
[lastName] [varchar](20) NOT NULL,
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I have edited the column headers and set the column names to the same values as my table names yet the data is not showing in form load I have set datagridview.AutoGenerateColumns = False I know the data is there if I delete datagridview.AutoGenerateColumns = False then the data is shown with the default headings?
I have a form in design view and when the form loads, I want the TimeMaskedTextBox to show the time now. But allow the user to change the time for later time in the day.
Let's say the time now is: 09:00 and the user wishes to change time to: 22:00 and when the form is saved, And a new form is loaded then the TimeMaskedTextBox will go back to the time now. How would the code be written.
so I have the following
Try
Dim username as String = My.Application.CommandLineArgs(0)
Dim password as String = My.Application.CommandLineArgs(1)
Catch
Msgbox("Cannot launch")
Application.Exit
Exit Sub
End Try
I placed this in the form's load event. What I want is for this check to run before the form even loads.If an error occurs, the msgbox comes up and the form is never seen. When I try the code now, the form comes up the msgbox shows. When the user clicks OK the form closes. I tried placing it in the form's designer but the designer tries loading the form any way. How do I get this check to run before the form shows?
I am making the Transition to VB.Net (using VB.NET 2010 express) and I have a simple problem that is driving me crazy. I wish for my Form when it Loads, initialise and then call a sub and do some stuff eg perform a plot. If i place a button on the form and click it the sub works fine.This task was simple to do in VB6 but for the life of me I cannot get it to work in VB.NET. Has the Form-Load event changed in some way with .Net?
View 4 RepliesI have a calculation project with 6 forms. The last form shows all the input and output data from the previous forms. This is accomplished in form6 load event. Form6 contains about 40 controls (mostly textboxes, labels and few pictureboxes), populated in this way:Textbox1.Text = Form2.Textbox3.Text, etc.I am not sure if this is a good practice. I know I can use the DGV, but it does not suit me because of the graphical reasons.
View 1 RepliesI have an app where there's an edit form and it loads a bunch of stuff into comboboxes which takes half a minute to load the first time. Once it's loaded I keep the instance of the form and just hide it instead of disposing it until the app exits. What I would like to do is in the Sub Main of the app (there is no startup form) I would like to launch a new thread and load that form into memory, but I don't want the form to be displayed at that time, what's the best way to do this?
View 10 RepliesI am working on an application which compiles fine on machine that is Win 7 and 64 bit CPU. But when copy and I run the exe file on similar machine (Win 7 64bit) I get error message: Error: Could not load file or assembly 'Interop.ActiveDs.Version=1.0.0.0,... I have added ActiveDS Type Library 1.0 C:WindowsSysWow64activedstlb as a reference in the project file.
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What I was thinking of is load a webbrowser window somewhere in the form, but within the webbrowser size, by default, load only say the Half left (or right) part of the webbrowser window. In pseudocode it would be smth like webbrowser1.show(1*webbrowserWindow.Height, 0.5*webbrowserWindow.Width, webbrowserWindow.With.StartFromLeft/Right). Now I know it sounds pretty crazy, but it would be smth very handful for me. Look at the SS below if you didn't get what I'm trying to say because that's quite possibly as clear as I can be.
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