Protected Sub Menu1_MenuItemClick(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.MenuEventArgs) Handles Menu1.MenuItemClick
End Sub
In VB.net, we have the Handles keyword, I'm wondering if C# has anything comparable. Or do you have to manually wire all the methods to each control's event (in ASP.NET especially)?
When I cut some controls in designer window and paste them in some other container, handles keywoards dissapears from code.
If I have btnOK on form and click event handled like this:
Private Sub btnOK_Click(...) Handles btnOK.Click
and then in designer I cut the button and paste it somewhere else, Handles part just disappears, living the method.
I understand why this happens, cutting like this is like deleting the control but silently removing parts of the code is not nice behavior from editor.
Is there any workaround, preference or plugin to add some warning before messing with my code? Or even better, to keep handlers and leave removing to me?
I have a form in VB with many (over 100 - fields, labels, the form itself etc...) items on. I wondered if there was a way of refering to all the items on the form without having to list them all individually in the Handles keyword, which is extremely long winded! I want to carry out the same action wherever the user clicks on the form. At present I have the following
[Code]...
The short program below runs just fine when it is the only item on a form. However, when I put it into the ItemInsertTemplate of a ListView control, I get the following message:
Handles clause requires a WithEvents variable defined in the containing type or one of its base types
Line 30: Protected Sub btnDate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDate.Click
The error message identifies Line 30 as the problem.I get the same message for Sub clnEvent_SelectionChanged How do I correct this?
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="clnControl.aspx.vb" Inherits="clnControl" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
[code].....
I'm migrating some code from VB.NET to C# (3.5).I find structurs like:
Public Event DataLoaded(ByVal sender As Object, ByVal e As EventArgs)
Protected Sub Mag_Button_Load_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Mag_Button_Load.Click
[..]
[code]....
What is the most streight-forward to translate such behavour in C#?
I am making a webbrowser and I am now trying to make the XButton1 go back. I have that working but I can not get it to work when the WebBrowser is active. My cursor has to be over the form (Me.MouseDown) I can't use WebBrowser.MouseDown because there is no browser until the application is opened. It is a a tabbed browser. The first browser is created like this.
Try
Dim Tab As New System.Windows.Forms.TabPage
Dim Browser As New System.Windows.Forms.WebBrowser
Browser.Dock = System.Windows.Forms.DockStyle.Fill
[code]....
Using Visual Studio 2008 I am trying to create two subs using the same handles:
Private Sub checkwin(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click, Button2.Click, Button3.Click, Button4.Click, Button5.Click, Button6.Click, Button7.Click, Button8.Click, Button9.Click
[Code].....
As these both use the same handles one sub overwrites the other...... Both subs contain If statements. Do I need to create two different handles... and how do I do this so that the handles use the same buttons?
I have a simple program that was written to access data from multiple access tables. I have everything running perfectly however I did encounter an error with the exit button. I have removed the control from the window and replaced it with a exit button on the form. However I am getting an error reading: "Handles clause requires a WithEvents variable defined in the containing type or one of its base types."I am a little confused because I have this exact same line of code in two other programs and it runs fine. I have read up on this and I know that I need a line of code that reads something like " Friend WithEvents Button1 AsSystem.Windows.Forms.Button" However I am not real clear on what friend means here and where exactly the With Events goes in my code?
Code for exit button
Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click'The problem is with this line of code'
[code]....
Is there a way to simply the Handles statement? What if i want this sub to handle 20 textboxes do I have to list each textbox there? I already have a loop in my script so i can cycle through my textboxes ("TextBox" & i.text). is there anyway to use a variable or a function after handles to get all the names of the text boxes?
Private Sub textChange(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress,TextBox2.KeyPress, TextBox3.KeyPress, TextBox4.KeyPress, TextBox5.KeyPress
(How to get The Handles Of process?)
View 2 RepliesIf I have two instances of the same form open, and one is on top of the other and I want to go to the one on the bottom, I have to click the form to bring it to the front.. I changed this so that if i click the panel(which represents the forms background) I have it bring it to the front.. But now I am having the issue where I click a control in that panel it wont bring it to the front.. So i know how to do this.. I can make a procedure handle all the controls onclick events by typing each controls name.click event
View 33 RepliesWhat i want to do is grab the handle of a webbroswer control and only read the co-ordinates within those bounds. I have successfully manager to do this but the problem i am now having is moving the mouse to those co-ordinates, for some reason after getting the handle and moving the mouse:
Windows.Forms.Cursor.Position = WebBrowser1.PointToClient(New Point(x, y))
It still reads full screen co-ordinates.
sub I use on all forms in my app I would like to put in one central place (of course right). in vb.net I put this sub in a module it has a "Handles tabcontrol1.Drawitem" - I get an error saying handle requires with events variable defined in containing type or one of its base types.also when I refer to tabcontrol1 in a module it wants to know which form.. Can I use sender to define current calling form?
sub
Private Sub TabControl1_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles TabControl1.DrawItem
Dim g As Graphics = e.Graphics
Dim tp As TabPage = sender.TabControl1.TabPages(e.Index)
Dim br As Brush
[code]....
I've been using Shell() to launch an application, and Process.GetProcessById() to get the handle to that window, but I think I'm running into problems when passing the handle around to various functions. What is the best way to declare and pass windows handles so that they will be usable? After viewing the debug, it seems the Shell() and Process.GetProcessById() work fine. After I pass the handle off to the functions I need to use them in, the program starts spitting out garbage, and not doing what I want it to do. Short version of the proces
[Code]....
here is what i want to do:
Private Sub UpdateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UpdateButton.Click
MyUpdate.CheckUpdate("version.txt")
[code].....
I have a problem that i can't understand. My Handle Click event does not work !Specifically i have a table (1 row 2 columns). In the first cell i have a datagrid and some text boxes and a button. My button does not work ! In the other cell i have text boxes as well and a button, here, at the 2nd cell the button works! What's the problem then
View 9 RepliesJust about every day as I build my app and run/test it, I click on a control (button, grid, anything) and nothing happens.I double-click the control in design mode, and it's like clicking on a new control, no code is there.It turns out that the control loses the part of the line of code.[code]This has happened so often that I know I'm not deleting it accidentally.
View 8 RepliesCheck process handle count:In Task manager, View, Select columns, mark Handle Count to the view.(The process when loaded has about 333 handles)
Operation:The new thread is set equal to an existing thread, then the existing thread is started and aborted. How does one restore the old handle count? Why do the handles increase by a random number and do not revert?
How can Idisposable/CloseHandle/or GC.collect, Finalize() work in this situation? I'm trying to return the handles to their original count, 333, when I start a new thread it adds 4,5, or 6 handles per new thread(even if the thread is aborted and set to nothing).
[Code]...
I am trying to use multiple handles to trigger one event but I need each handle to effect the event differently. I feel like this should be simple. I want to use a Select Case to select the alteration but I can not figure out how to identify the handle used and convey that to the Select Case.
Private Sub Event(ByVal sender As System.Object, ByVal e As _
System.EventArgs) Handles Button1.Click, Button2.Click
Select Case handles[code].....
get a listing of all current open windows, with their captions and have the option to close these windows via code.
View 22 RepliesIs WithEvents & Handles usage preferable to RemoveHandler & AddHandler?
From Memory point of view (remove an added handler after utilization, etc.)
I have searched far and wide and have not been able to find a solution to my problem.I have a typical situation where a process is gradually eating up memory. The process eventually throws an OutofMemory Exception. This problem has been dealt with in the past by just building a special machine that has greater memory.
This process bombs on only one of our clients which has around 450,000 records. We iterate through the collection of accounts and build a class object that is then passed into the xml serializer. This object has several properties and methods that would not all be populated at the same time. These objects are populated based on the information in each account record.
I've checked on the way we call the contructor for the XML Serializer and it is in the format that would store the xml assembly and not create new ones each time. So, I do not believe there is a memory leak due to the creation of the dynamic assemblies.How we call the serializer: Dim k1Serializer As New XmlSerializer(GetType(ClassObject))
My questions are:When serializing a large object, does the serializer look at every possible serializable object or just the ones that are populated by your object?
Could the serialization of this large class object be causing an issue?I noticed when we pass in the serialized object, it's not automatically written out to the file specified. It takes a few seconds to, I guess, serialize the object and then write it out. Could the fact that we are iterating over so many records, so quickly, that the serializer is not having enough time to write out to the file and then release the memory?
I am experiencing a strange issue with a VB6 -> VB.Net conversion. There is a function that uses ADOX to look through the tables in a given database, and reset the seed values of any columns in said tables with the auto increment property set to true.I tracked the issue down to a call of "col.Properties("Autoincrement").Value". If this line of code is commented out, then the file handle properly terminates when I close both the ADO and the ADOX connections at the end of the function. If I leave that line in, the handle stays open despite the closing calls and forcing garbage collection.Here's how I am closing the objects:
System.Runtime.InteropServices.Marshal.ReleaseComObject(adoConn)
Dim connection As ADODB.Connection = cat.ActiveConnection
If Not connection Is Nothing Then
[code]....
I have some code designed to locate a specific process based off of its window text, gather the main handle, and then all of the child windows. However, I have run into one problem. I cannot seem to gather all the handles and their respective text. For example, when I test my program and do a handle count on the specific process, it tells me that there are more than 400 handles for this one process. How do I get the handle pointers for this process and also gather the text associated with these handles.I have included my source code for reference.
Code:Public Class Form1
Const GW_CHILD As Integer = 5 Const GW_HWNDNEXT As Integer = 2 Const WM_GETTEXT As Integer = &HD Const WM_GETTEXTLENGTH As Integer = &HE Const BM_SETSTATE As Integer = &HF3 Const WM_LBUTTONUP As Integer = &H202 Const WM_LBUTTONDOWN As Integer = &H201
[code]....
I have one page with two dropdownlists with different IDs and in my codebehind I have two distinct methods, one for each dropdownlist, with distinct names and handlers.BUT, in my codebehind, only one dropdownlist calls it's method - and sometimes it calls both methods! - while the other dropdownlist never calls its method.I tried cleaning the infamous "Temporary ASP.NET Files" folder I tried rebuilding the solution but the problem persists?
View 1 RepliesI am trying to control an external application using visual basic. I have spy++ in order to get the windows handles of all the tool bars/buttons etc. Can someone refer me to some code/ tutorials on how i can control the application. I will need to perform mouse clicks (ex clicking file>open) and sending key strokes in that application.
View 2 RepliesI have some code designed to locate a specific process based off of its window text, gather the main handle, and then all of the child windows. However, I have run into one problem. I cannot seem to gather all the handles and their respective text.
For example, when I test my program and do a handle count on the specific process, it tells me that there are more than 400 handles for this one process. How do I get the handle pointers for this process and also gather the text associated with these handles.
I have included my source code for reference.
Code:Public Class Form1
Const GW_CHILD As Integer = 5 Const GW_HWNDNEXT As Integer = 2 Const WM_GETTEXT As Integer = &HD Const WM_GETTEXTLENGTH As Integer = &HE Const BM_SETSTATE As Integer = &HF3 Const WM_LBUTTONUP As Integer = &H202 Const WM_LBUTTONDOWN As Integer = &H201
[code]....
I had a question about handling multiple events in a sub, like this:
Private Sub Form1_MouseUpOrDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseUp, Me.MouseDown
'do something
End Sub
Once the sub is called, is there any way to tell which event called it? (Whether it was a MouseDown or a MouseUp event?) Right now, I am doing a work-around as follows... having each event call the same sub and pass the info in. But it would be nice to not have that overhead.
Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown
ExecuteMouseUpOrDown(EventTypes.MouseDown, sender, e)
End Sub
[CODE]...
Don't use ACCESS, EXCEL, or a TEXT FILE as a database. If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<<.
In all the sendmessage examples its always to Notepad using the class "edit" how would i find out other classes/control handles for different programs?
[Code]...
How do I get the list of open file handles by process id in C#?
I'm interested in digging down and getting the file names as well.
Looking for the programmatic equivalent of what process explorer does.
Most likely this will require interop.