why the button in "String Collection Editor" is disabled (Please see the graph)?My final target is to enter a name-value dictionary in App.Config file, is there any alternative method to do that?
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I have been researching for a couple of days now and to no avail. Does Anyone know how to make a custom collection that take advantage of the collection editor? I would like to be able to have 3 Color Values, 1 Boolean and 1 String.
View 15 RepliesI have a radio button control on a web form. The members of my ListItem collection are
assigned the following.
Text No
Value 0
Text Yes
Value 1
So what I need to do, is to readd a varchar value from my database and if the column value returned equals 'Yes' then I need to select the radio button that has the assigned value of 1. Otherwise if the value read from the database is 'No', then I need to select the radio button assigned a value of 0
So how can I set the value for my radio button? I experimented and could not figure it out. The 'Yes' or 'No' value is stored in my database in the field ds.Tables("employee").Rows(0).Item("answer")
So I tried something like this which is not correct:
RadioButtonList1.Items.FindByValue(ds.Tables("employee").Rows(0).Item("answer") = "Yes").Equals(True)
I'm using VS2008, writing an app in VB.Net (3.5 framework), and I have a custom control which recieves a collection (each item in the collection has an image, and 2 text fields).When populating this at design time, it's nice and easy to do either in code, or even better through the very useful "Collection Editor" (in terms of user friendliness, at least).What I'd like to do is give my end users a similar Collection Editor interface, on my main form, to be able to add to and remove from this collection in a similar way to how it's done in the IDE. This is new territory for me, and I really don't know how to achieve this
View 3 RepliesAs some of you are aware of, I am fairly new to VB.NET. I am trying to learn as much as I can. I have a textbox which is set to multiline. It's setup to accept a maximum of 500 characters (10 lines of 50). First of all, since it's size is fixed, how can I remove the right bar on the left as im not using it (the scrolling bar).
#2, once a user click on a button, I disable the textbox and display the text. I can set the background color, however it looks like when the textbox is disabled, text is gray and can't be changed. A fix I found is to use a label and hide the textbox, but are there any easier way ?
Instead of defining the Points in Series Collection Editor, can I define them from textboxes, numeric up down or something like that?
Example: Having a numeric up down, the number I put there appears as Y value for a X value that never changes, even when I change the numeric up down value.
I have a UserControl class in a Windows Application project. One of the properties of it is a collection of another class that I have defined. I can't seem to find a good example of how to get the standard collection editor working for it at design time.I got it working using some example code I found to a degree, but the data in my collection doesn't get saved. When I exit the form and open it back up in design time the data isn't there any more.Here is my class:
Public Class Gauge
Inherits Control
Private WithEvents _Captions As New CaptionCollection
[code].....
I have a problem with a property on a custom property of a class. Here is the actual code for the inherited form
Public Class Form : Inherits System.Windows.Forms.Form
Private _Active_Application As Custom.Classes.Active_Application = New Custom.Classes.Active_Application
<System.ComponentModel.EditorBrowsable(ComponentModel.EditorBrowsableState.Always)> _
Public Property Active_Application() As Custom.Active_Application
[code]....
but when i use a separate class to inherit the above class this property ('Active_Application', not Custom.Classes.Active_Applicaton) is disabled.
I am trying to extend the functionality of the ToolStripPanel control (which is a panel hosting ToolStrips that can be moved during design-time, as I'm sure you know).One thing I wanted to add was a 'ToolStrips' property, which would be a collection of ToolStrips the user can edit via the collection editor in the designer. So instead of manually placing ToolStrips on the ToolStripPanel via the toolbox, the user can just use the property to add/remove (or even edit) them. This is of course similar to how you add/remove/edit TabPages in a TabControl.So, I came up with this code, which I have used successfully in the past for other controls:
Public Class cToolStripPanel
Inherits ToolStripPanel
Private _ToolStrips As New ToolStripCollection(Me)[CODE]....
The cToolStripPanel control inherits the ToolStripPanel control and adds the ToolStrips property, which is of type ToolStripCollection. That class, in turn, inherits the Collection(Of ToolStrip). In the InsertItem method, I add the 'item' ToolStrip to the cToolStripPanel. Of course I also need to override the RemoveItem / ClearItems methods but that's for another time.I am 100% sure that this code should works, at least for other controls. If you replace ToolStrip with Button (for example), I can add buttons via the property during design-time just fine, exactly the way I want it.But it seems that ToolStrips are special. When I try to Add a toolstrip (via the collection editor Add button), a null reference exception occurs. I've been trying to debug this all day and I've finally come up with a possible candidate for the problem... (I've actually used design-time debugging for the first time ever, which was pretty cool, and which showed me that the InsertItem method is not run!)
I think the problem is that the collection editor cannot create a new instance of the ToolStrip class. I can remember when trying to inherit from the ToolStrip, I was forced to add a constructor, because the ToolStrip "has more than one constructor that can be called with no arguments".Perhaps this is causing my problem? Do I (and if yes, how?) have to somehow control the creation of a new instance of the ToolStrip? Or am I completely off track and that is not what is causing the problem? I'm sure that it's a problem with the ToolStrip class, since I can use the exact same method with other controls just fine. It's only when I change the type to ToolStrip that it starts getting angry at me....
I have a little problem with application setting in VB.net 2008. I want to switch main server and backup server connection string with combobox. [Code] It did change the Application Setting connection string in the main form when combobox1 was changed. But the problem comes, when child form was called. On the child form there is DataGridView with Dataset using application connection string. Even the Backupserver was selected on the main form, child form dataset connection string doesn't change. I don't know how to pass the current connection string to child form dataset although it is set to use application setting.
View 6 RepliesIf I have two buttons, one to start a song being played and one to stop it. The start button has enabled set to true and the stop button is enabled to false. What I want to happen is the stop button to only become active when the start button is pressed. I was thinking of putting stopMusicButton.enabled(True) within the start method, but this doesnt seem to work
View 2 RepliesI have a form with a button which is disabled by default, and a CheckedListBox with 68 items in it. What is the simplest way of enabling the button, when an item in the CheckedListBox is selected or unselected? I'm looking for something like If CheckedListBox1...any of the items state changes...Then Button1.Enabled = True
End If
Can the "Disk Cleanup" operation on Windows be disabled / enabled with a registry setting using VB.Net?I am using Windows 7 32 bit ultimate edition. but as a temporary measure I do not wish to do so.
View 4 Repliesok I have an array and based on whether their is information in all the arrays nodes is dependent on whether a button is enabled.
Heres what I have:
Dim PatientArray(5) As String
txtFName.Text = PatientArray(0)
[code]....
im wondering if it is possible at all to bisable a button after it being clicked because i have no idea on where to start on doing this. I only know how to get it to disable for the one session but when the program is run again it is enabled again. Is there any way to just keep it disabled because it nly ever needs to be clicked once.
View 20 RepliesI'm disabling a button in vb.net and when I do, I cannot control the BackColor or ForeColor properties to change the appearance. I set new values for them but they don't get picked up. The disabled button looks almost exactly like my enabled buttons so you can't tell the difference. I'm using Flat Style buttons, but have tried changing this and it still doesn't seem to work. Is there some sort of trick to be able to do this?
View 1 RepliesI have several buttons on a form that are disabled yet the mnemonic will still cause a click event for the disabled button is there a way to stop this?
View 3 Repliesi had placed image and backgroundimage in button control in vb.net if button is in disable state,image also shown as disabled(there is no color of image) state.but i want an image as enable (ie.image should be in color) and at the same time button will be disable?
View 1 RepliesVS 2010 How do I Click my button once then its disabled?
View 3 RepliesHow can i make the play button disabled if the music is playing in the background and when i hit the stop button, the Play button becomes enabled? And the music in the background is from my resource in a .wav file format.
View 1 RepliesI am trying to check whether the button is enabled or disabled. I am doing the following
Assert.IsTrue(Browser.IsEditable(button))
but it gives me error that expression does not produce a value. Any one know how to achieve this. Currently I am using VS2010 MStest in vb.net.
I would like to know how to make a button click only so many times until it becomes disabled.
I would also like to know how to keep what is put in a RichTextBox there, without erasing the other text;
Example: Two buttons, the first puts "1" into the RTB, and the second puts "2" into the RTB. However when I press the second button, it over writes the first value.
How can I prevent this?
You Can Ignore this question below;
Old Question: I am working on a counter, and want to know how to make a button show itself if I hid it.
I have:
CODE:
And would like to know how to make one of the buttons visible again, with one big button.
I know it has something to do with an "If" statement.
Answer: Button#.Show()
I am using Visual Studio Ultimate. I have made a fairly long program which worked fine.One day I find that the debug button was disabled and both the build and rebuild buttons do not work. I have tried opening the same project files in Visual Basic Express 2010 but still, the sane problem.
View 4 RepliesI have TextBox1 whose Default text is Sumit and a gridview with records and button field in each row ..On Page load eventI want if textbox1 text is Sumit .... then all the records in gridview1 whose name column values is sumit .... then that rows Book button will be disabled and rest of all will be remain as it is in Enableed form Is this coding is right : ?
Protected Sub GridView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.DataBound
For Each myRow As GridViewRow In GridView1.Rows
[code]....
I am trying to add a splash screen to my app and when I go into project properties the windows application framwork properties are disabled so a cannot set my form as a splash screen. The checkbox for enable application properties is also disabled so I cannot check it.
View 1 RepliesJust wondering how i can enable visual styles with the application framework option disabled - it would be nice to have the ability to use the xp+ theming while having a bit more flexibility
View 6 RepliesBasically I have an application that has 2 textboxes and a button. What I am trying to do is when the button is clicked, it takes an entered string from box one (which is validated to only accept numbers) adds 235 to it then converts it to hex and finally reverse the string and sets textbox two equal to that value. Note that the final string has to be eight digits so the string may needed to be padded with zeros before the string is reversed. With that said how could I go about doing this? Also I do plan to add 2 more textboxes and another button to undo this process but I am thinking if I can figure out do it one way writing the code to undo the process shouldn't be too hard.
View 12 RepliesI have a Rich textbox from which i need to search for text.Find should start at the beginning of the text. Find Next should look for the next occurrence. If no previous occurrence, it should start at the beginning (duplicate functionality as Find).Problem is Find is working fine but when i click find next instead of searching for the next occurence it starts from begining after i click find button.
Public Class frmFind
Dim start As Integer = 0
Dim indexOfSearchText As Integer = 0
[code].....
i planned to write a syntax highlighting application for a C/AL editor. I have a tool which has a little autocomplete function in C/AL.At first i would test it in my notepad. I thought about this procedure.1. Start application (minimized in tray, defined match words)2. Open Notepad (my application notice it)3. While typing the application the color of my text changes in notepad
View 4 RepliesI'm using visual basic 2005 express edition I am having trouble with comboboxes and a button I want the button to be disabled "button1.enabled = false" when the program starts Then when the user selects a listing in all the comboboxes have the button become enabled "button1.enabled = true"
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