Catch After A User Control Has Been Shown In .net, Winforms?
Nov 23, 2009as the title says, I'm looking for an event to catch after a user control has been shown.
At the moment, I have to set a do-once variable and catch the Invalidated event.
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Asp.net/VB: User Control In Repeater - Catch Click Event Of Button
Feb 23, 2012I have a User Control. In this user control I have a Repeater. In this repeater I have again a User Control. If I try to catch the click event of an ImageButton in this user control, I'm gettin nothing because the event has not been fired. Is there a way to catch this event?
Some code:
first user control:
[CODE]..........
In myUserControl:
[CODE]..........
This event isn't firing:
[CODE]..............
Also the following does not work because it returns nothing:
[CODE]...................
VB: User Control In Repeater - Catch Click Event Of Button?
Apr 9, 2009i have a User Control.In this user control I have a Repeater.In this repeater I have again a User Control.If I try to catch the click event of an ImageButton in this user control, I'm gettin nothing because the event has not been fired.
View 5 RepliesAdd Right Click Context Menu On Winforms User Control?
Feb 14, 2011What I hope is relevant code below, I would like the User to be able to Right click when hovering over the PictureBox container of a User Control and pop up a menu which allows a User to check or uncheck an item in the context menu. How can I acheive that?
[Code]...
Changing Dock Property In Winforms User Control
May 5, 2011I'm trying to create a button that will hide the panel that I have docked at the centre of my user control. [code]This works to an extent. However, when the bottomPanel is set to Fill it seems to fill the entire control, and not just up to toolStrip1. Can anyone tell me why this is happening, and how to correct it?
View 1 RepliesBind A WinForms TreeView Control To Some User-defined Objects?
Oct 16, 2011I'm trying to bind a WinForms TreeView control to some user-defined objects. In particular, I'd like to bind aTreeNode.Text property to myObject.Name. My strategy is to create xTreeNode, a subclass of TreeNode, add a DataBindings collection, and expose its Text property. This would allow me to write some code like this:
Dim oBinding as Binding
Dim bs as New BindingSource
bs.DataSource = myObj
[code]....
User Control - ProgressBar With Text - Text Not Being Shown
Mar 23, 2012I have a User Control that is a ProgressBar with Dock set to Fill. The code is as below. Unfortunately it simply doesn't show the text in the progress bar and why is beyond me skill.
[Code]....
The If Not... conditional code in the set method is there to prevent the SetProgressText procedure running every time the property is set. The Value property of a ProgresBar is an Integer and if the code that is setting it runs through thousands of loops (>600,000 in my case) then there's no point updating the text every time since it can only actually change 100 times for a 0-100 ProgressBar. The 600k looping takes about 2 seconds usually, without that conditional code it takes at least 2 minutes!
Label Backgrond Flicking On A WinForms User Control Has Background Image Enabled?
Mar 16, 2010I am working on a windows form project and having some problem with UserControl Double Buffering.I created a usercontrol and has a background image, then on top of it I have few radio buttons and labels. Radio buttons and labels are all having transparent background as color.However, when I show and hide the User control, I can see the flickering on those labels and radio buttons that has transparent background.And I tried
Me.SetStyle(ControlStyles.DoubleBuffer _
Or ControlStyles.AllPaintingInWmPaint _
Or ControlStyles.UserPaint _
[code].....
Winforms - Catch The Autosize Double-click Event On A Listview?
May 9, 2011I am using Visual Studio 2008 and VB.NET. I've got a listview control on my form and I've added columns using the windows forms designer. As you know, if you double-click on the sizer or divider or whatever you want to call it between two columns, the column on the left will autosize (unless you disable that). How can I catch this specific event? The ColumnWidthChanged event and the DoubleClick event are likely candidates, but in the ColumnWidthChanged event, there's no way I can see to determine if it was an autosize. Similarly, there's no simple way to catch what was clicked exactly with the DoubleClick event. how I can catch this specific event type?
View 1 RepliesVS 2008 Allow The User The Option Of The Form To 'not Be Shown Again'
Apr 22, 2012im hoping to be able to create a form that welcomes users to the application that i have created, however i want to be able to allow the user the option of the form to 'not be shown again'
View 13 RepliesCan't Prevent A Form Shown With ShowDialog From Closing When User Clicks OK Button
Jul 18, 2011I have a VB.NET 2010 Forms Application which includes a form with a textbox, and two buttons which I call from the main form using .ShowDialog
I've messed with something such that I can no longer prevent the dialog from closing when the user clicks the Ok button but has entered invalid information.
Here is the handler for the OK button's click event:
Private Sub cmdOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdOK.Click
If SomethingIsWrongWithWhatTheUserEntered Then
[Code]......
VS 2010 Multiple Forms In Tab Control And Just Shown
Mar 2, 2012I have been going a couple of directions as I learn and try to figure out more. Basically, I have a form that has a tab control that contains 6 tabs and tons of controls on each tab. They are like Orders, Invoice, Customer Info, Quotes... What I would ultimately like to do is have individual forms that fit into the tab with a parent/child relationship as well as be able to not use them in a parent/child type of relationship so that they can be used as stand alone forms.
I have done something like this, but the form moves around. I would like to lock it into the top left so that everything lines up.
Dim frm As New Form2
frm.Show()
SetParent(frm.Handle, tab1.Handle)
I also have to pass values from sibling to sibling, but I think that I can handle that if I can come up with a good format.
So overall, I would to have forms that could be in a tab or just displayed as a child not in the tab.
Telling The Program How To Check If User Typed The Text Article Shown Correctly?
Jul 31, 2011I need some help on telling the program how to check if user typed the text article shown correctly word by word as they are typing. I've tried
Usertypehere.Text = Articleshown.text
But the program only consider the user to type correctly if they finished typing the whole article.
Control The Height/number Of Items Shown In A Select Dropdown Box?
May 15, 2012Is it possible to control the height/number of items shown in a select dropdown box? Or do I need to code a custom widget? Is this possible?
Forgot to mention I'm using the following code:
<asp:DropDownList runat="server" Width="288px" CssClass="Select"></asp:DropDownList>
Programmatically Set The Control Shown In A Cell Of A Table Layout Panel?
Jan 4, 2012I am writing a windows forms application in visual studio 2010 (using VB). I want to change the control shown in a particular cell of a Table Layout Panel at runtime. Like this...
If radiobutton1.checked then tablelayoutpanel1's cell 1,1 shows panelOne
else tablelayoutpanel1's cell 1,1 shows panelTwo
Remove The Tabs From The TabControl And Just Buttons To Control Which Screen Is Shown?
Nov 15, 2011remove the tabs from the TabControl and just buttons to control which screen is shown.Ive coded a form that uses buttons to hide and show panels but because you cant click buttons in design view, its extremely hard to edit the content in the panels.
View 1 RepliesUser Control And Panel - TargetPnl To Display User Control Named Vviewer When Click SearchBtn?
Nov 6, 2009I have an application going here Form1 has a panel on it named TargetPnl. I need my TargetPnl to display my user control named Vviewer when I click my SearchBtn and also need it to disappear when I click another button.
View 1 RepliesGet The Try/catch To Work With Text Boxes And Input From The User?
Feb 4, 2010I'm familiar with Visual C# and the try/catch for that but I cannot seem to figure out how to do the same thing in VB. Basically I can't figure out how to get the try/catch to work with text boxes and input from the user and whatnot.I've tried setting the textbox.text property = "" but that has no use, I've been trying to find something on Google about it but I cannot seem to find a single thing about textbox try/catch statements. Is it possible to do it with text boxes?
View 5 RepliesHow To Catch Error If The Data That User Select Not In Database
Oct 23, 2010How can I catch error if the data that user select not in database?
This is my code.[code...]
User Control - Calling A VB Linkbutton's(within A User Control) Click Event From Javascript?
Apr 11, 2009how can i call a VB function - deleteevent() in usercontrol.ascx.vb from a javascript function in clickhandler(e) in usercontrol.ascx. The call should cause a postback because I need the usercontrol to display the changes.I am currently trying to do it by using a linkbutton with style display:none, and calling its click event from the javascript function. But i dunno how to call the click event.
View 2 RepliesAsp.net - Hidden/Shown AsyncFileUpload Control Doesn't Fire Server-Side UploadedComplete Event
May 26, 2010I recently came across the AsyncFileUpload control in the latest (3.0.40412) release of the ASP.Net Ajax Control Toolkit. There appears to be an issue when using it in a hidden control that is later revealed, such as a <div> tag with visible=false.
Example:
Page code -
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="act" %>
[Code].....
I have a breakpoint on the UploadedComplete event but it never fires. However, if you take the AsyncFileUpload control out of the <div>, making it visible at initial page render, the control works as expected.
So, is this a bug within the AsynchUploadControl, or am I not grasping a fundamental concept (which happens regularly)?
Catch Control + C System Event Through By .Net?
Jul 26, 2009I want catch control + C system Event through by VB.Net means i devolped one project in VB.NET. In my project one search textbox if my project is minized and some word or else document opened and if user press control + C system event do then my minimized project open and selected word (means those word you select ) see in my search textbox.
<input id="gwProxy" type="hidden"><input onclick="jsCall();" id="jsProxy" type="hidden">
<div id="refHTML"></div>
Find And Interact With A User Control On Page From Separate User Control?
Oct 17, 2011I have an aspx page that has two different user controls. I want to find user control A and be able to set properties, etc., from user control B.
I was thinking I could do something like this:
Dim CMFilters As Control = Me.Parent.FindControl("CMFilters")
...but that doesnt work to be able to set properties and call methods. I somehow need to get the user control and and declare it as that user control type.
Catch 404 Error Exception On Web Browser Control
May 28, 2011How can I catch 404 error on web browser control?
Try
TimeTable.Navigate("URL/File.htm")
Catch ex As Exception
TimeTable.Navigate("URL/File2.html")
End Try
Catch An Exception Thrown By A Control Event?
Jan 21, 2011How can I catch an exception thrown by a control event?I have a control that throws an exception in one of its events and I need to catch it but I don't know how.Consider for example that the text box control throws an exception in its click event. How can I catch such exception?
View 3 RepliesCatch The On_scroll Event For A Web Browser Control In .net?
Jun 28, 2010I want to move certain controls on a form when the webbrowesr controls' vertical scroll bar is scrolled. but there is no scroll event defined for the webbrowser control in .NET I am using Visual studio 2008 and VB.net.
View 1 RepliesAsp.net - .NET Button Control, OnClick Event: (Try, Catch Statement)?
Oct 31, 2011I have a button on a web page that I just need a little help with some extra code. I think I need a TRY, CATCH statement?, this is what I have so far: I have a simple web page that has a button which at the moment when pressed enables the user to add data to a DB table via a stored procedure.Once this button is pressed a pop up message box is displayed to let the user know the data has been passed. The user then needs to press the 'OK' button within this message box which then directs them to the home page of the site. This works fine.
The code for this is here:
Protected Sub btnAddRawData_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddRawData.Click
'database conn, this is linked to the web config file .AppSettings
Using dbconnection As New SqlConnection(ConfigurationManager.AppSettings("dbconnection"))
[code]....
As I don't want the user to enter duplicate records in the database (This could be done by the user navigating back to the page where the btnAddRawData_Click is located and pressing it again.), I have created a UNIQUE INDEX named 'DupRecords' to stop the user from commiting this data more than once that day.When I run the web page now I get the following message in my browser:
Cannot insert duplicate key row in object 'dbo.GasRawData' with unique index 'DupRecords'.The statement has been terminated.The solution I think, is to add a TRY, CATCH statement into the btnAddRawData_Click code.
Event Handler - Catch The Textbox Control In The Datagrid?
Oct 5, 2010Is there any way to catch the textbox control in the datagrid? like catching its keypress event?
View 1 RepliesWinforms - How To Get The Executing User
Jun 27, 2012I have a .Net 2.0 Windows Forms application which needs to be run as a specific user (right click, run as).I need to be able to check which user has launched it and stop if it is not the specific user.All the examples I have found show the logged in user.How can I access the application executing username?
View 2 RepliesError - Catch Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception'
Mar 25, 2011I have a program in VB.Net that receives mails from Outlook, extracts attachments and inserts the attachments into a table through a query. I would like to put the query/queries in a Try/Catch block, but cannot do so as Outlook exceptions cannot be caught, and it gives me an error, and unless I put a very specific exception, I cannot catch it. Is there a workaround?
Edit:
Try
Catch ex As Exception
End Try
Exception is underlined and when I hover on it, it says: "Catch cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not in 'System.Exception' or a class that inherits from 'System.Exception'". This is affecting all my other code which I'd like to put into a Try/Catch block.