Changing A String To A Control?
Dec 1, 2010
I am reasonable new to programing and have ventured in to using VB.net after creating macro's etc in excel, as this seemed to be the easiest transition into the world of programing.I am creating a application to work with an access database and before I submit the forms textboxs to the database, I check to make sure each field is filled in and if it isn't then I highlight the field by changing the label back colour to orangered.
What I have is a bunch of textboxes and a label above each saying what the field is. so for example the textbox name is txtBox1 and its label is lblBox1, txtBox2 - lblBox2 and so on.So what I thought I would try and do is, as the user leaves the txtBox after editing, the label background colour would be changed back to transparent.
As I have multiple txtbox's I thought I could do this using sender to get the name of the txtBox on leave, strip the first 3 letters txt and change them for lbl cast it as a label, then change the background color but I cant seem to convert my string to a label control. can someone help me with what am i missing or not doing.
[Code]...
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Feb 16, 2011
I'm trying to make a program with transparent labels over pictureboxes and when I set the label Parent to the PictureBox the position of the label changes.
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Sep 16, 2011
i am making a l337 speak generator..Lets say I input bob12321 (although i can input anything)I would like to make the program replace the "b" with either [code]How would i do that... I tried string.replace - but it says character A cannot be turned into long (on a seperate word)[code]
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Dec 2, 2009
I need to allow the user to rotate a control (the control inherits from a TextBox) in 90 degree increments so the text can be read from either side, or even upside down.
I'm guessing I could override the control's paint event and just paint it in the orientation that I want, but I'm just wondering if there's a quicker/built-in way?
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Feb 2, 2011
I have added a few text boxes to my report in MS Datareport.I want to assign value from my variables to these controls.how to access and address these controls.In VB6, I could simply do it in the code part of the data report.
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Sep 17, 2009
I'm quite new at this but I'm trying to change the look of a tab control other than the options provided in the control's properties. In short I want to create a large tab that will fit a picture but I don't know how to change the size of the tab. I also want to make the control look somewhat different than what the control provided with VS.NET looks like.
What I need to know is how to create a custom control that operates the same as tabcontrol but looks different than the traditional control provided with VS. I tried looking up how to create a custom control but all I could find was how to create one programatically and I don't know how it would apply to a tab control. Maybe the only way to do it is programmatically but I would rather play with the control in the designer than having it appear only at runtime.
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Mar 4, 2009
character manipulation in a String.
How do you change characters in a particular string and set them to a particular value.
For eg. I want to change the third character of the string "hello" to Y = > i get "heYlo".
I tried using the Chars function but it says that the function is read only.
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Dec 15, 2011
I'm trying to change my connection string to w/e the user wants. After a few tips here and there, this is what I've come up:
1: In my settings I've added - Name(login), Type(String), Scope(User), Value(Nothing)
2: Here is the code I'm using
Private Sub LoginForm1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Here I'm checking if the login in my.settings is there
'If not, I'm going to let the user choose what database
[code]....
The error I get is: Format of the initialization string does not conform to specification starting at index 0.here -
Dim con As New OleDbConnection(My.Settings.login)
When I have my con equal to when I added the datasource from it works.
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Jan 18, 2012
im currently working on my thesis and i just wanna know how to avoid changing connectiong string? we are 4 members in a group each time that my other groupmate try to run our system in their own laptop/desktop they always change the server name. i wonder what if we implement our system in any computer? how were going to handle that?
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Feb 13, 2009
I Have a VB.net form with lots of controls to save as config: textbox, radio button, check box... but these a Scatered inside tabs, panels, groups..
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Oct 26, 2010
I'm trying to change the look of some controls in VB.An example would be a button, I now have a stack of 4 images on top of eachother. By using the mouseover events and such, I get the same result as a normal button. However, I'd like to be able to insert those images into a normal button like thing.
I know it's possible to do this by creating a custom control, but that'd end up with the exact same code, just in a different file.
However, the real issue would be a dropdown box and slidebar. I'd like to get them to look nice with my theme. (Background, buttons, borders. Things like that..). I got absolutely no clue on how I should do that.
I know that there's a tool to create controls, but that's from scratch and I can't get a grip on it, at all.
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Feb 15, 2011
I have a property declared like this[code]...
I am trying to get the button to be enabled/disbaled based on the property. The properties value changes fine, but it's not updating the button's IsEnabled property.
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Mar 22, 2012
I have a property declared like this
Private _isupdateenabled As Boolean
Public Property IsUpdateEnabled() As Boolean
Get
[code].....
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Aug 20, 2008
I am creating a program with a web browser component, and a tab control. Default, the web browser is anchored to the toolbar. In my program there is an option to make a toolbar at the top of the form visible.false. Is there a way to make the web browser anchor to the top of the tab control when the toolbar is not visible, and anchor to the toolbar when the toolbar is visible?? I have experimented with docking (fill) but then parts of the web browser become covered by the toolbar and status bar. I am still relatively new to visual basic 2008 so if you could please explain or provide code.
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May 11, 2011
I am running into an issue with changing properties of controls on a VB.net project that I am working on. The portion of code that I am having trouble with is re-enabling a couple of buttons and a ComboBox after a Threaded operation completes. The point of it is to disable the buttons after clicking the main "run process" type of button (called cmdCrawlSearch) so that the process can run on a new thread while the form is updated with the status. I was able to learn about Thread Safe calls using delegates in order to update the Text property of the TextBox (txtOutput) on the form, and thought that enabling buttons would be just as easy, but when I am trying, I am either getting an "Object reference not set to an instance of an object" exception, or an "Exception has been thrown by the target of an invocation" exception (from the current version of code) with the InnerException being the Object reference exception. I am posting the portions of code related to the issue, then below it is the InnerException name and stack trace. Perhaps I am not using the Delegates correctly (since I still do not fully understand what can and can't be done using a Delegate.) Or there is a better way to do this.
[code]...
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Apr 6, 2009
Well I'm not sure how to describe it so i uploaded an image that has 2 different control box positions.
[URL]
The one on top is set up as Render Mode=System while the other image is set up as Render Mode= ManagerRenderMode
Both applications were developed in VB using VS2005.
Each one has its MDI container and their MainMenuStrip set up..
What property/reason would be causing this? I just created a test program simulating the same case (MDI container with child forms) and everytime i maximized the control boxes appear in the correct position.
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Jan 12, 2012
I am inheriting my own datagridview (say MyDataGridView) from the standard datagridview control. What I want is that certain properties of MyDataGridView should have a different default value than what its base have. For example, AllowUserToAddRows,
[Code]...
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May 19, 2012
I have tried the following for changing backcolor and forecolor of each textbox in the form cant cant do the same for changing the font size
Here is my code'[code...]
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Feb 15, 2010
Is there a way to specify the color of the text in the tabs of a Tab control ? The text is black but I'd like to change it .
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Jun 2, 2009
I am trying to change the UserAgent of the WebBrowser control in a Winforms application.
I have successfully achieved this by using the following code:
[DllImport("urlmon.dll", CharSet = CharSet.Ansi)]
private static extern int UrlMkSetSessionOption(
int dwOption, string pBuffer, int dwBufferLength, int dwReserved);
[Code]....
The only problem is that this only works once. When I try to run the ChangeUserAgent() method for the second time it doesn't work. I stays set to the first changed value. This is quite annoying and I've tried everything but it just won't change more than once.
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Aug 10, 2006
This problem is with the WebBrowser component. The code posted below is what I am trying to insert into the control before it renders the page for the first time. This question actually stems from this post: [URL]. I am developing the application in C#, however the problem is not really language specific.
When I have a page that has a javascript call to:
window.print()
I am wanting to override the print method so that pages do not pop up the print dialog. I can do so by inserting this into the top of the html:
window.print=function emptyMethod() {};
I now just need to figure out how to get this code into the document html before the browser control renders it for the first time. I have tried a number of things (for a complete list, see the post listed above), all with no success.
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Feb 1, 2012
I have VB.NET code that is called when the selected tab index of a tab control changes, I am trying to get the code to change the text in a text box to the URL of the web browser control that when the tab changes. I have the code below, however it gives errors:
AddressTextBox.Text = CType(TabControl.SelectedTab.Controls.Item(0), WebBrowser).Url.ToString
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Jul 22, 2009
I am working on a application which is basically a screen designer. I have implemented the form designing capabilities using IDesignerHost and other interfaces. In my application user can pick a component from toolbox and drop it on the designer screen and can configure the properties from property window. I have my own set of properties which gets populated from database. Screen designer is working fine but the problem occurs when user changes some properties from property window. Say user changes property 'Width' then I change the width of the selected control in designer but the problem is SelectionOverlay shows the old size. When I select another control and select old control again, SelectionOverlay(resize handlers which appears around the control) shows properly. How can I tell the SelectionOverlay that the size of the control is changed.
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Jun 17, 2011
is there an easy way to stop the changing of colours when you disable a control. i want the controls to look normal just not do anything if you try to use them would have thought there is a global setting or something??
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Dec 31, 2010
For example i have form within the application which shows the connection string in a text box so the user can change it to there database but i cant work out how to save the new string to the connection string within the app.config file
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Apr 16, 2012
How can I change font color of a string. I set the fore color properties of the label holding the string but seems that only works when the string is displayed in that label. Is there a way of setting the color of a string itself such that it displays any where with that color by default. I am actually sending this string as email but wanted to format it in a way that it will display differently however it doesn't.
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Dec 30, 2009
I am working in vb2008. I would like to change the color of a piece of a string that I am concantenating together For example
Dim string1 as stirng - "abc"'set to black
Dim string2 as string = "def" 'set to green
Dim string2 as string = ghi" ' set to red
[code].....
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Mar 20, 2011
I'm making a simple text encoder for my chat prog. and I need it to cycle through each character and replace it with one please give me an example code of changing all A's in a string to B's and change all B's to A's. So abab would come out baba.
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May 14, 2010
I have some web-radio site and i want my program to record the song name from the webpage, i dont really know how,
i made RichTextBox and i made a WebClient....
I dont know how to make it look for the string that shows the name song.
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Feb 26, 2012
I am working on a project that I scroll from one screen to another.
A particular string I have 2 variables that can be changed. If I stay on this screen I can change either variable just as I need
however when I change to another screen then return my string is 1 digit longer and when I wish to edit this string my program fails because the string isn't the expected length.
A portion of my program follows....The Y6 is just a counter. The MA is a conditional control.
ElseIf _
Y6 = 4 _
And MA = True _
[Code]....
Delete 0-27 then determine whats there "NC" or "NO" and simply change it. But again when I leave this particular screen and return my text length is no longer 29 charactors long, it is now 30 charactors.
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