I`m trying to write simple program to choose any country and program automatically tell U on what continent is it... I add on form 1 combo box it`s name "combobox2" and 1 label it`s name "txtcountry" and on "txtcountry" visible is false. I think that when I or any customer choose any country, only after that label will be say on what continen is it I write this code
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What must i do for the program to control the value of x automatically? that is, suppose i click on btn1, value of x must become 0; if i click on btn2, value of x must become 1 and so on.
I'm trying to get user's country and continent, in VB.NET.
View 4 RepliesWhen my application starts, it scans the computers registry for COM ports and adds them in the combo box. The combo box first index is just a blank, and the second is COM1, COM2,...COMn. What I want to do is by default, I want my program to select the first COM port in the combo box, so in this case, COM1.
I know I have to use the PORTNAME property of the serial object, but not sure how I would set that equal to the 2nd index of the combo box.
I have 10 Comboboxes in a form. All these combo boxes have databound items which come from the same column in a table in the database (access 07) (Am designing a billing software, and these comboboxes show the items (10 lines of them).All these combos reside in one Groupbox.Now for the strange (scary/funny) part, whenever I change a value of 1 combo, all the other combos change automatically and show the same value as the one that was changed. (strange!).
View 6 Repliesis there any control that allows the font to be automatically scaled? example, i want to make the text 80% of the width and height of the control, and it must be centered.
currently im using textrenderer.measurestring repeatedly to determine the largest possible size i could have that would be within 80% of the width and height of the control, and the onpaint handlers graphics.drawstring to keep the text vertically and horizontally centered.
i m using this code but it gives beep on every press event i don't want this beep sound how can i?
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I've in my app many self created custom controls (not as a real active x control, but a simple modified class). In this case I'm writing about a groupbox. I've placed many of them on different forms. But now, I want to change the backcolor of this controls. I change the backcolor in the class, rebuild the project, and the backcolor didn't change. Why? I don't want to place the groupbox again, it would be too much work. It should be a chance to do this whithout placing the groupboxes again.
View 1 RepliesI am navigating to a website using a webbrowers control and I wish to automatically scroll the page after it is loaded. I have used scrolltop , scrollleft commands as set out below but nothing seems to happen.
WebBrowser1.Document.Body.ScrollTop = 100
WebBrowser1.Document.Body.ScrollLeft = 200
I have placed the above commands in a command button and wait until the page has loaded before I press it and also in the
WebBrowser1_DocumentCompleted sub
Other commands such as
WebBrowser1.Document.Body.ScrollIntoView(True)
Seem to work ok.
I need to automatically fill forms in a WebBrowser Control. There are TextBoxes and CheckBoxes. How can I automatically set their value programatically? Language: VB 2008?
View 2 RepliesI am using webbrowser control to automatically navigate through facebook.Nothing malicious, just an experiment of sorts.Im working on a bot that that would extract the names of all friends on my friends page, open up those pages, extract their friends names, and repeat.The end result would be a chart of who knows who. A sort of 'six degrees of separation' experiment.I have everything automated up until getting to my friends page and I am having trouble extracting the urls from my friends page. [code] Now, I figure I can extract from <div class=fsl fwb fcb">, but Im confused as to how to go about doing this. On another thread, someone said it cant be done with webbrowser control, but im new automation.
View 11 RepliesI have a listview control connected to an SQL database, I have set up a datapager to limit the items shown on each page (3 per page). I have set the datapager to: visible=false and would like to know how to make the datapager change pages automatically every 5 seconds.
View 1 RepliesPublic Function debugOutput(ByVal type As String, ByVal StringToOutput As String) As Integer
Debug.Items.Add(type, StringToOutput)
Return 1
End Function
For some reason only the 1st string appears(type) and StringToOutput doesn't appear at all. also how would i make a listview control automatically scroll to the bottom
I'm creating a program in visual basic 2008 that can scan an image straight to a picturebox using a scanner.
View 1 RepliesI'm using this control in a application to load the URL of a .jpg image. The thing is that the image is bigger than the control, so I want it to automatically resize the image, as IE does when the same thing happens there, and it even shows a little magnifier glass to restore the image to full size.How can this be achieved? What happens at default is that the image is bigger than the control, so a quarter of it shows and I have to scroll to see the rest.
View 4 RepliesThe VB application is automatically getting closed whenever the code is invoking any common dialoge control especially when the MS office Enterprise edition 2007 is installed.
View 1 Repliesi am using vb.net 2005 to developed desktop application ,I am having two windows form user control , the first control name con.vb containing the design and code for connecting to database and getting a list of my project values in combo box.Now the second user control report.vb which i am using to generate some reports , since the code behind is using connection to connect to various project database , so i want to get the value of First user control into another how i can get the i have tried the below but its giving me error in run time but no error in design or code behind [code]
View 4 RepliesAm using a combo box with no of phone numbers .I want to get the phone no one by one in a variable. Now am using the below code to get the combobox values. But still now am getting the following error message System.Data.DataRowView. Please help me to fix this error. am new for vb.net.[code]
View 1 RepliesI am teaching myself VB, and when I first managed to do what the post title says, I ended up with a combo box filled with values from the column of a table in a linked db. But later when I updated the VB Form and tried linking the database on this revision of the project,and then added the details to the combo box where to read the values and run the form, nothing displays in combo box. Here is what I did:In the IDE of VB, I went to "Add New Data Sources" -> Database -> New Connection -> Browse -> (selected filename of db) -> Next -> Select "yes" (put in current project) -> Next (save connection name) -> tick boxes for tables in database to connectThen in combo box control properties i set the Data Source (Other Data Sources -> Project Data Sources -> (dataset name) -> Table Name
View 4 RepliesI'm using VS2008, vb.net, and winforms. I've got 3 comboboxes on the same form who are all bound to the same data. If an item is added in one, I want the change reflected in the other two. I'm trying to create one sub to handle the adding of an item for all three combos. I found that the "sender" object appears to contain the control name. The Sub I created is not working quite right because after the item is added, the combo list display repeats itself. So instead of "Item1, Item2, Item3" after adding "Item3", I get "Item1", "Item2", "Item1", "Item2", "Item3". This coding works fine if I were to copy it to the Key_Down event for each combo and reference it directly (for example, use cboSpecialty1.Items.[code]...
View 4 RepliesI have a SplitContainer on a form that has 2 panels. The top panel has a FlowPanelLayout control docked in it and the bottom panel has a DataGridView docked in it. I want the top panel to be collapsed when the form is first shown. As the user adds controls to the FlowPanel I want to grow the top panel just enough to see the controls and visa versa. When the user removes controls from the FlowPanel I want to shrink the top panel. If no controls exist I want the top panel to collapse again.
Can I do this by changing properties of all the controls at design time, because I can't figure out the right combination to make it work? Or do I have to do this programmatically?
I have a modal form with a single instance of the built-in .NET 2.0 tab control. The tab control has several pages, and on one of them is a combo box that isn't populated until the user activates it for the first time. When that happens, I handle the DropDown event and run a process that takes several seconds, then I add the items returned by that process to the combo box.It works fine, except right after the list portion of the combo box is dropped down, it immediately closes as if some other control took the focus. I've narrowed it down to the fact that there is a tab control on the form, and the process that retrieves items for the combo box takes more than 4 seconds. If I create a completely blank form with just the combo box, I don't see this behavior.
Needless to say, this is strange beyond belief. Any idea why the tab control would interfere with the control that currently has focus?
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I want to avoid paste operation in combox box control. to suppress the system context menu for copy and paste, I did following steps1) Create a empty new context menu (just drag drop new context menu on the form)
2) Assigned newly created empty ContextMenuStrip to combo box ContextMenuStrip property. Is it the right way to avoid right click system context menu? is there any other way to do so?
I am trying to enable/disable a date time picker control based upon the selected value of a combo box. The combo box is linked to a dataset here:
>Start Code
'Load Disposition Combo
cmDisposition.DataSource = dsFFDIlu.Tables(0)
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I am getting the error:
Invalid Cast Exception : Operator '=' is not defined for type 'DataRowView' and type 'Integer'.
The dataset 'DIID" field is obviously an integer.
i am using vb.net 2005 to developed desktop application I am having two windows form user control , the first control name con.vb containing the design and code for connecting to database and getting a list of my project values in combo box.
Now the second user control report.vb which i am using to generate some reports , since the code behind is using connection to connect to various project database , so i want to get the value of
First user control into another how i can get the i have tried the below but its giving me error in run time but no error in design or code behind -
MR.MainForm.Connection1.project_combobox.SelectedV alue.ToString
Error i am getting is :
System.NullReferenceException was unhandled
Message="Object reference not set to an instance of an object."
Source="MDR"
I am trying to create a combo box the fill with the list of names from an Access Database Column, and I have read numerous forums trying to discern what to do but the stumbling block is when I try to copy their code, changing variable names to mine, etc I hit stumbling block when they ask for things like New SqlCommand(sSQL, myConnection) and my VB IDE doesnt come up recognising the sqlcommand when I start typing it in when it tries to autocomplete what I am typing. I have added the database & tables into the DataSources area to right of the IDE (as per attached pic
View 2 RepliesHi, I am inheriting the telerik radcombo control however I am unable to view any items that i add to the combo list.
View 3 RepliesI am using VS2008, vb.net, Windows forms project.I have a combo box control on a tab control.The selected value of the combo box is bound to a binding source.The data source of the binding source is a typed dataset.I set the datasource of the binding source when a record is chosen in a data grid control.Since the combo box is bound to the binding source, this should set the selected value of the combo box, and fire the initial SelectedIndexChanged event.Therefore, I remove the SelectedIndexChanged event handler for the combo box before I set the datasource of the binding source, and add the handler again after the datasource is set.
View 2 RepliesI am using visual studio 2005. i am using webBrowser control to automate third party website.My problem is SelectedIndexChanged event is not getting fired. I used the code.[code]This code is changing the value in combo box but it is not firing the selectedindexchanged event. If i manualy select the item then after selecting a item it shows different message. How should i do it programatically.
View 5 RepliesQ1: how to play next song automatically? Q2: I dont want to fullname of Song like : d:mp3asshunter - dota125.mp3 (Only Basshunter - dota125 or Basshunter - dota125.mp3)but i need fullname of file to play song cuz my play button code Player.URL = ListBox1.SelectedItem
Q3: About my trackposition bar (name:trackbar2) song moves (back or forward) when i moved trackbar2 scroll (it's ok no problem)but trackbar2 scroll doesn't automatically move.
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