In my propertygrid having one custom property ..suppose some text is there in this item.i want user to allow only delete the item.nothing more like editing ,backspace nothing..only provide delete key option to this property item..
View 4 RepliesHow can I provide an error message if the user does not provide a value in my textbox. I found this example, but it doesn't work in my
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
As System.EventArgs) Handles Button1.Click
If TextBox1.Text = "" Then
[code]....
It says that Error Provider1 is not declared. How do I do this the right way?
Provide URL in a toolstrip? I mean to URL that will be displayed as a link.
View 4 RepliesI'm writing a custom DAL (VB.NET) for an ordering system project. I'd like to explain how it is coded now, and receive some alternate ideas to make coding against the DAL easier/more readable. The DAL is part of an n-tier (not n-layer) application, where each tier is in it's own assembly/DLL.
The DAL consists of several classes that have specific behavior. For instance, there is an Order class that is responsible for retrieving and saving orders. Most of the classes have only two methods, a "Get" and a "Save," with multiple overloads for each. These classes are marked as Friend and are only visible to the DAL (which is in it's own assembly).
In most cases, the DAL returns what I will call a "Data Object." This object is a class that contains only data and validation, and is located in a common assembly that both the BLL and DAL can read.To provide public access to the DAL, I currently have a static (module) class that has many shared members. A simplified version looks something like this:
Public Class DAL
Private Sub New
End Sub
Public Shared Function GetOrder(OrderID as String) as OrderData
[code].....
This cleans it up a bit, but it leaves a lot of classes that only have references to other classes, which I don't like for some reason.Without resorting to passing DB specific instructions (like where clauses) from BLL to DAL, what is the best or most common practice for providing a single point of access for the DAL?
i have a problem and my project is stop now so i must solve this problem i have a listbox in my project and simple is; so this infos are irregular. i getting this infos with a loop into listbox. i want this infos be sub-bottom.
View 2 RepliesWe build a class (i.e. Server) and create a LOAD method that loads a dataset with all the details of that object.We need all that information sometimes... but what about when we only need one piece of data from that object (i.e. webserviceUrl).Should we build classes with a bunch of scalar methods that get back single pieces of data as opposed to only getting ALL the data and then only taking what we need?It's a waste to get all the data when we dont always need all of it but it also will take longer to write the extra methods..
View 2 RepliesI want to provide a textbox in my windows forms application (in vb.net) that will be masked in time format and validate for time in 12hr format. It should also auto complete i.e if user enters 6 and clicks tab then it should make the text to 6:00 am.
View 3 RepliesI have a need to provide mouse coordinates and click details to the sub-classes of an application. The details are stored in a typed variable in the main class, as they are not processed when the event occurs.
What is the correct way of getting the classes to refer to variables in the parent class that instigated them? I realise this is not standard practise, but at this stage in the project I am converting code from a procedural language and need to do this as an intermediary step. Using the mouse events is also not possible, as this is a DirectX-oriented real-time program, and some things still have to be processed procedurally. They have to be stored via the event and then processed manually.
I may have dozens of instances of the classes, so distributing the mouse data every time it changes is not a good option. Ideally, the class should be able to retrieve the data when it needs it.
How can be find out which file is going to delete when, user provides command like DELETE or SHIFT + DELETE or by programmatically gives DELETE command. Well I know about FileSystemWatcher Class, but this class doesn't provide information before delete...
View 1 RepliesIs there a efficient way to provide an Enumarable<SomeType> or a collection that implements INotifyCollectionChanged but that can only be changed from the inside of the providing class.
The following example shows what I mean, but has the disadvantage that the caller can cast the IEnumerable<SomeType> back and then manipulate my internal collection, what I really would dislike:
[Code]...
When I build my VB.NET 2008 Express Edition project I get the following error
The designer loader did not provide a root domponent but has not indicated why
I though this meant that I need to put my Acces mdb in the root folder of the project but that didn't help. why I'm getting this error? If I click on more information I get an message saying information not found.
I want to make a user control (name MultiSelect), which I will use for choosing items from huge list. For example I want to choose customers to make a view of their turnovers, so I will creat a new MultiSelect control which will contain a textbox (i canwrite starting letters) and a treeview (will list customers matching the first letters chosen in textbox).
View 7 Repliescreating a simple pong type game. want to provide human user option to choose from "rookie , Veteran, Allstar" as CPU AI skill.
Q1 - currently on form load game starts (I do not want) I want to present list of options first. Player Skill Level *See above.
Q2 - Want to provide an option for who gets the ball first CPU or Human
Q3 - Want to choose "Game to #" the user can set as the first to score x points wins.
I would like to provide an effective way for my VB.NET application to get registered automatically in a company with many computers. So the Enterprise Licence would kick in, but how to manage this?I was thinking each computer would connect to an intranet server where he would get the permission to register...C64
View 2 RepliesIs that possible to provide a combobox that each item has its own checkbox?I'm looking for built-in component that enables it. I remember it was possible on VB6 but can't find it in VB.NET 2008
View 5 RepliesI need to create kind of a menu in my application in wich I have to set different parameters before I populate a Datagridview with some values.So, the idea is to use a PropertyGris in which from which I can edit some parameters and after that I run a query (with parameters setted by PropertyGrid) tu populate my DGV.For example I create some properties like NAME OF A PROJECT, ID OF PROJECT, RESPONSABLE, etc and I put this properties in a propertyGrid and than the user can interact with the propertyGrid and set value for each parameter, bfore running the query for populating
View 3 Repliesi'm hoping to use a propertygrid in one of my programs.
1/ i'm having difficulty writing a (text) property that will open a multiline editor like the textbox text property in the vb properties window. how would i do that?
2/ i need a way to make either selected properties or preferably entire categories disabled or enabled at runtime.
3/ how can i turn off automatic sorting so my categories + the items they contain are displayed in the order they are in my class?
Imports System.ComponentModel
Imports System.Drawing.Design
Imports System.Text.RegularExpressions
[code]....
What is the best way to provide strongly typed access to the session object? I am planning on turning on Option Strict, which is causing the compiler to complain about my lazy programming technique of directly accessing the session object:
Dim blah As Integer = Session("Blah")
My initial thought is to create a class that wraps the session and provides strongly typed properties for the information stored in the session. However, I cannot decide if the class should be a singleton, or instantiated on every use, or where the code should reside (i.e. within the web project or within a class library).
I'm leaning towards a singleton in my class library, but I don't know if that is the best solution, or if I am missing any other possibilities.
Proposed Solution:
Public Class SessionAccess
Public Shared Property Blah(ByVal session As HttpSessionState) As Integer
Get
[Code].....
I am looking for a best practice to provide users of my ecommerce website with a breadcrumb trail. Current Site Setup:
[Code]...
i have to find a string in an array. i am using array.indexof method to get the index of matched item. now problem is that indexof method comparison is case sensitive and i cannot restrict user to provide case sensitive string.[code]
View 3 RepliesI would like to give permission to use this project to say, 10 users. The following code is fine for a single user. How can I write conditional code to provide the access to other nine users?
Submit button
If txtUsername.Text <> "Mahajan" Or txtPassword.Text <> "mh745" Then
MsgBox "Access Denied! Either Username or Password is incorrect!", vbOKOnly + vbCritical, "Security Login"
txtUsername.Text = ""
txtPassword.Text = ""
[code]....
I want to add a new PropertyGrid control every time an item is added to a ListBox.I have a ListBox, with an "Add Item" button underneath (and also a "Remove Item" button). Every time an item is added to the list, I want to create a new PropertyGrid corresponding to each item. The relevent PropertyGrid should appear when an item is selected in the ListBox, and the user can edit the properties of that item.
The only way I can think of doing this is by creating a dynamic array which has length ListBox1.items.count, but I'm not sure it's possible to create an array of controls.
How to dynamically add Datasource Property in propertygrid in vb.net?
View 1 RepliesPropertyGrid is only scrollig correctly when I place it on a Windows Form, but does not work when it's docked in a SplitContainer Panel. Only the vertical scroll bar is needed for my application. The vertical scroll bar displays correcly and you can move it up and down okay, but the contents of the PropertyGrid (while correct) do not scroll up and down with it. I'm using Visual Studio 2005 Professional Version 8 with .NET Framework 2.0 and coding in Visual Basic. Has anyone found a way around this?
View 1 RepliesI would like to display a PropertyGrid on a form at runtime to simplify some testing that I am doing. I have it working except that the PropertyGrid does not pickup any extender provider properties (eg ToolTip). How do I make it aware of any extender providers also?
View 4 RepliesI M DEVELOPING AN ASP.NET APPLICATION I WANT TO PROVIDE INTERFACE IN ARABIC AND ENGLISH
View 2 RepliesIn the .NET world, what application has replaced the role that SourceSafe used to provide in Visual Studio 6?
View 23 RepliesUsing <System.ComponentModel.TypeConverter(GetType(System.ComponentModel.ExpandableObjectConverter))> _
on the declaration of a class (which is a property of another class) that consists of a number properties.
I load an instance of this class with simply ...
PropertyGrid1.SelectedObject = oColumn
Obviously I don't want to manually build the propertygrid in code, I know how to do that.
But here's the problem. Depending on the value of a property, certain other properties should not be visible, as though I'd used the <System.ComponentModel.Browsable(False)> _
attribute on the property declaration.Is there anyway to do this programmatically, without having to handle all the building of the property grid manually>
I'm trying to add a custom DropDown to the PropertyGrid for a control. I am adding the TrackBar control.It works fine, except, I would like to have the values updated in the PropertyGrid as I move the TrackBar. As it is now, it only updates the PropertyGrid when I finish and click off the TrackBar.I know the problem lies in the Type Editor. How can I get it to allow interim values to be processed. Is there some callback function I can use?
[Code]...
I am having a problem with objects that have other objects as properties on a property grid. Now when I display the object clsPropsFrame on the property grid, everything shows up as expected, except when I try to edit the x, y, or z of location which is of type clsPropsVec3, it ignores the change. What's strange is that when I type the vector in as a string (like "0, 16, 0"), it changes.
I have the following
'//////////////////Object Component///////////////////////////
<TypeConverter(GetType(ExpandableObjectConverter))> _
Public Class clsPropsVec3
Inherits ExpandableObjectConverter
Private refvec As TV_3DVECTOR
Public Sub New()
[Code] .....
I noticed that when I changed a component of clsPropsVec3, the property change in clsPropsFrame does not get executed. I tried making it fire of an event when a component is changed in clsPropsVec3, with the following additional
Public Property X() As Single
Get
Return refvec.x
End Get
Set(ByVal value As Single)
[Code] .....
But for some reason it ever fires off the ValueChanged event. So how can I make the sub properties of clsPropsVec3 work?