I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunately, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
10  5034 
"Rick Palmer" <ri*********@we love.com> schrieb: the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Add 'AddressOf' in front of the 'combobox1.text '.
--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>
Hi,
1) Combobox1.text is a property of a combobox. You should not name a
function or a sub the same as a property of a control
2) Use address of in addhandler so the compilier knows where to find the
procedure
Addhandler Button1.Click, Addressof MyEventHandler
3) AddHandler only works with sub routines they do not work with functions.
They must accept the same arguments as the event is expecting.
Ken
---------------------
"Rick Palmer" <ri*********@we love.com> wrote in message
news:fa******** *************** *********@4ax.c om...
I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunately, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
Like I said in my previous email, that would make VB look for a Sub
called "combobox1.text ". But that's not the case. The case is the
name of the sub I want to call is IN combobox1.text. ...See?
-rp
On Wed, 6 Oct 2004 20:01:46 +0200, "Herfried K. Wagner [MVP]"
<hi************ ***@gmx.at> wrote: "Rick Palmer" <ri*********@we love.com> schrieb: the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Add 'AddressOf' in front of the 'combobox1.text '.
Let me phrase it a different way....
There are three reports: Written_Premiun , Earned_Premium, and
Unearned_Premiu m.
These 3 report names are items in a combobox on my form.
The code for the form has a seperate sub corresponding to each of the
reports. The subs are named EXACTLY the same as their corresponding
items in the combobox, like so:
Public Sub Written_Premium (...
Public Sub Earned_Premium( ...
Public Sub Unearned_Premiu m(..
I only have one button to start processing.
When the user selects their desired report from the combobox, I want
to bind the appropriate sub to the button.click event. Since I named
each Sub exactly as it's corresponding item in the combobox, it can be
said that the combobox contains the name of the sub we want to bind to
the button's click event.
So let's say I choose "Written_Premiu m from the combobox....
If my code is written like this:
AddHandler(Butt on1.Click, AddressOf combobox1.text)
Then VB will be looking for a sub named "combobox1.text ", which
doesn't exist, instead of looking for
Does that clarify things any????
On Wed, 6 Oct 2004 14:07:07 -0400, "Ken Tucker [MVP]"
<vb***@bellsout h.net> wrote: Hi,
1) Combobox1.text is a property of a combobox. You should not name a
function or a sub the same as a property of a control
2) Use address of in addhandler so the compilier knows where to find the
procedure
Addhandler Button1.Click, Addressof MyEventHandler
3) AddHandler only works with sub routines they do not work with functions.
They must accept the same arguments as the event is expecting.
Ken
---------------------
"Rick Palmer" <ri*********@we love.com> wrote in message
news:fa******* *************** **********@4ax. com...
I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunatel y, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
Instead of doing that, you could do something like this:
Public Class Form1
Inherits System.Windows. Forms.Form
' omiting designer code..
' one button - Button1
' one combobox - Combobox1
Enum ReportTypes
Report1
Report2
Report3
End Enum
Private arr As New ArrayList
Private Sub Form1_Load(ByVa l sender As System.Object, _
ByVal e As System.EventArg s) Handles MyBase.Load
With arr
.Add(ReportType s.Report1)
.Add(ReportType s.Report2)
.Add(ReportType s.Report3)
End With
ComboBox1.DataS ource = arr
End Sub
Private Sub Button1_Click(B yVal sender As System.Object, _
ByVal e As System.EventArg s) Handles Button1.Click
Select Case ComboBox1.Selec tedIndex
Case ReportTypes.Rep ort1
' call Report1 procedure..
Case ReportTypes.Rep ort2
' call Report2 procedure..
Case ReportTypes.Rep ort3
' call Report3 procedure..
End Select
End Sub
End Class
hope that helps..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:fa******** *************** *********@4ax.c om... I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunately, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
Yes, but the way you've show below, if I added a new report, I would
have to add it:
1) to the Enum
2) to the Case Select Statement
3) to the With... statement that fills the arraylist
in addition to writing the new code....That leaves two chances for me
to forget to add it somewhere and make myself look like like a dumbass
when it goes into production. The way I'm trying, you would only have
to add an entry to the combobox and add the code.
I actually figured out how to do this without using AddHandler.
Instead of changing handler for the button.click event, I just use one
handler, ion which I use System.Type.Inv okeMember to call the
subroutine named in the combobox.
On Wed, 6 Oct 2004 15:00:17 -0400, "Imran Koradia"
<no****@microso ft.com> wrote: Instead of doing that, you could do something like this:
Public Class Form1
Inherits System.Windows. Forms.Form
' omiting designer code..
' one button - Button1
' one combobox - Combobox1
Enum ReportTypes
Report1
Report2
Report3
End Enum
Private arr As New ArrayList
Private Sub Form1_Load(ByVa l sender As System.Object, _
ByVal e As System.EventArg s) Handles MyBase.Load
With arr
.Add(ReportType s.Report1)
.Add(ReportType s.Report2)
.Add(ReportType s.Report3)
End With
ComboBox1.DataS ource = arr
End Sub
Private Sub Button1_Click(B yVal sender As System.Object, _
ByVal e As System.EventArg s) Handles Button1.Click
Select Case ComboBox1.Selec tedIndex
Case ReportTypes.Rep ort1
' call Report1 procedure..
Case ReportTypes.Rep ort2
' call Report2 procedure..
Case ReportTypes.Rep ort3
' call Report3 procedure..
End Select
End Sub
End Class
hope that helps..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:fa******* *************** **********@4ax. com... I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunately, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
Well - you can avoid (3) by doing something like:
For Each sReportType As String In [Enum].GetNames(Repor tTypes)
arr.Add(sReport Type)
Next sReportType
Also, IMHO, that's a bit more clean and also avoids the overhead that
reflection incurs. I wouldn't want to use reflection if I know the type and
method I need to execute. I would usually resort to Reflection only when I
really need to (late binding because of unknown types, etc). Just a
thought..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:68******** *************** *********@4ax.c om... Yes, but the way you've show below, if I added a new report, I would
have to add it:
1) to the Enum
2) to the Case Select Statement
3) to the With... statement that fills the arraylist
in addition to writing the new code....That leaves two chances for me
to forget to add it somewhere and make myself look like like a dumbass
when it goes into production. The way I'm trying, you would only have
to add an entry to the combobox and add the code.
I actually figured out how to do this without using AddHandler.
Instead of changing handler for the button.click event, I just use one
handler, ion which I use System.Type.Inv okeMember to call the
subroutine named in the combobox.
On Wed, 6 Oct 2004 15:00:17 -0400, "Imran Koradia"
<no****@microso ft.com> wrote:
Instead of doing that, you could do something like this:
Public Class Form1
Inherits System.Windows. Forms.Form
' omiting designer code..
' one button - Button1
' one combobox - Combobox1
Enum ReportTypes
Report1
Report2
Report3
End Enum
Private arr As New ArrayList
Private Sub Form1_Load(ByVa l sender As System.Object, _
ByVal e As System.EventArg s) Handles MyBase.Load
With arr
.Add(ReportType s.Report1)
.Add(ReportType s.Report2)
.Add(ReportType s.Report3)
End With
ComboBox1.DataS ource = arr
End Sub
Private Sub Button1_Click(B yVal sender As System.Object, _
ByVal e As System.EventArg s) Handles Button1.Click
Select Case ComboBox1.Selec tedIndex
Case ReportTypes.Rep ort1
' call Report1 procedure..
Case ReportTypes.Rep ort2
' call Report2 procedure..
Case ReportTypes.Rep ort3
' call Report3 procedure..
End Select
End Sub
End Class
hope that helps..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:fa******* *************** **********@4ax. com... I have an app I'm working on that will allow a user to run one of 5
reports. The report names are in a combobox on my form. I have a sub
defined for each report that has the exact same name as is displayed
in the combobox. I have one button on the form to start processing.
What I want to do is this: When the user selects the report they want
to run from the combobox, I want to dynamically bind the appropriate
sub to the button's click event. Since the sub names are the same as
the display names in the box, I'm wanting to do it like this:
Addhandler Button1.Click, combobox1.text
Unfortunately, that makes VB look for a sub called "combobox1.text ",
instead of looking for the function named in combobox1.text. Anyone
know how to do what I'm trying to do????
-rp
Imran,
You can actually reduce that to
arr.AddRange([Enum].GetValues(GetT ype(ReportTypes )))
Although I think I would skip the ArrayList and simply add the values to the
Items collection of the ComboBox. Something like:
ComboBox1.Items .AddRange([Enum].GetValues(GetT ype(ReportTypes )))
Then in my Button_Click I would use the SelectedValue:
Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
Select Case ComboBox1.Selec tedItem
Case ReportTypes.Rep ort1
MessageBox.Show ("call Report1 procedure...")
Case ReportTypes.Rep ort2
MessageBox.Show ("call Report2 procedure...")
Case ReportTypes.Rep ort3
MessageBox.Show ("call Report3 procedure...")
Case Else
Throw New ArgumentOutOfRa ngeException("R eportType",
ComboBox1.Selec tedItem, "Invalid Report Type in ComboBox1.")
End Select
End Sub
Private Sub MainForm_Load(B yVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.Load
For Each item As ReportTypes In
[Enum].GetValues(GetT ype(ReportTypes ))
ComboBox1.Items .Add(item)
Next
ComboBox1.Selec tedItem = ReportTypes.Rep ort1
End Sub
Note due to GetValues returns an array of Enum, and not Object, I had to use
a For Each.
Note: I am putting actual Enum values into the ComboBox, not the name of the
values, because the combo box will call Enum.ToString, the string name of
the enum will be displayed...
Hope this helps
Jay
"Imran Koradia" <no****@microso ft.com> wrote in message
news:OV******** ******@TK2MSFTN GP15.phx.gbl... Well - you can avoid (3) by doing something like:
For Each sReportType As String In [Enum].GetNames(Repor tTypes)
arr.Add(sReport Type)
Next sReportType
Also, IMHO, that's a bit more clean and also avoids the overhead that
reflection incurs. I wouldn't want to use reflection if I know the type
and
method I need to execute. I would usually resort to Reflection only when I
really need to (late binding because of unknown types, etc). Just a
thought..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:68******** *************** *********@4ax.c om... Yes, but the way you've show below, if I added a new report, I would
have to add it:
1) to the Enum
2) to the Case Select Statement
3) to the With... statement that fills the arraylist
in addition to writing the new code....That leaves two chances for me
to forget to add it somewhere and make myself look like like a dumbass
when it goes into production. The way I'm trying, you would only have
to add an entry to the combobox and add the code.
I actually figured out how to do this without using AddHandler.
Instead of changing handler for the button.click event, I just use one
handler, ion which I use System.Type.Inv okeMember to call the
subroutine named in the combobox.
On Wed, 6 Oct 2004 15:00:17 -0400, "Imran Koradia"
<no****@microso ft.com> wrote:
>Instead of doing that, you could do something like this:
>
>Public Class Form1
> Inherits System.Windows. Forms.Form
> ' omiting designer code..
> ' one button - Button1
> ' one combobox - Combobox1
>
> Enum ReportTypes
> Report1
> Report2
> Report3
> End Enum
>
> Private arr As New ArrayList
>
> Private Sub Form1_Load(ByVa l sender As System.Object, _
> ByVal e As System.EventArg s) Handles MyBase.Load
> With arr
> .Add(ReportType s.Report1)
> .Add(ReportType s.Report2)
> .Add(ReportType s.Report3)
> End With
> ComboBox1.DataS ource = arr
> End Sub
>
> Private Sub Button1_Click(B yVal sender As System.Object, _
> ByVal e As System.EventArg s) Handles Button1.Click
> Select Case ComboBox1.Selec tedIndex
> Case ReportTypes.Rep ort1
> ' call Report1 procedure..
> Case ReportTypes.Rep ort2
> ' call Report2 procedure..
> Case ReportTypes.Rep ort3
> ' call Report3 procedure..
> End Select
> End Sub
>
>End Class
>
>hope that helps..
>Imran.
>
>"Rick Palmer" <ri*********@we love.com> wrote in message
>news:fa******* *************** **********@4ax. com...
>> I have an app I'm working on that will allow a user to run one of 5
>> reports. The report names are in a combobox on my form. I have a sub
>> defined for each report that has the exact same name as is displayed
>> in the combobox. I have one button on the form to start processing.
>> What I want to do is this: When the user selects the report they want
>> to run from the combobox, I want to dynamically bind the appropriate
>> sub to the button's click event. Since the sub names are the same as
>> the display names in the box, I'm wanting to do it like this:
>>
>> Addhandler Button1.Click, combobox1.text
>>
>> Unfortunately, that makes VB look for a sub called "combobox1.text ",
>> instead of looking for the function named in combobox1.text. Anyone
>> know how to do what I'm trying to do????
>>
>> -rp
>
Right..thats even cleaner and more concise. Basically, not to go the
reflection way (InvokeMember) if you can avoid it (ofcourse with not a whole
lot more).
Thanks for the input, Jay.
Imran.
"Jay B. Harlow [MVP - Outlook]" <Ja************ @msn.com> wrote in message
news:uk******** ********@TK2MSF TNGP10.phx.gbl. .. Imran,
You can actually reduce that to
arr.AddRange([Enum].GetValues(GetT ype(ReportTypes )))
Although I think I would skip the ArrayList and simply add the values to
the Items collection of the ComboBox. Something like:
ComboBox1.Items .AddRange([Enum].GetValues(GetT ype(ReportTypes )))
Then in my Button_Click I would use the SelectedValue:
Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
System.EventArg s) Handles Button1.Click
Select Case ComboBox1.Selec tedItem
Case ReportTypes.Rep ort1
MessageBox.Show ("call Report1 procedure...")
Case ReportTypes.Rep ort2
MessageBox.Show ("call Report2 procedure...")
Case ReportTypes.Rep ort3
MessageBox.Show ("call Report3 procedure...")
Case Else
Throw New ArgumentOutOfRa ngeException("R eportType",
ComboBox1.Selec tedItem, "Invalid Report Type in ComboBox1.")
End Select
End Sub
Private Sub MainForm_Load(B yVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.Load
For Each item As ReportTypes In
[Enum].GetValues(GetT ype(ReportTypes ))
ComboBox1.Items .Add(item)
Next
ComboBox1.Selec tedItem = ReportTypes.Rep ort1
End Sub
Note due to GetValues returns an array of Enum, and not Object, I had to
use a For Each.
Note: I am putting actual Enum values into the ComboBox, not the name of
the values, because the combo box will call Enum.ToString, the string name of
the enum will be displayed...
Hope this helps
Jay
"Imran Koradia" <no****@microso ft.com> wrote in message
news:OV******** ******@TK2MSFTN GP15.phx.gbl... Well - you can avoid (3) by doing something like:
For Each sReportType As String In [Enum].GetNames(Repor tTypes)
arr.Add(sReport Type)
Next sReportType
Also, IMHO, that's a bit more clean and also avoids the overhead that
reflection incurs. I wouldn't want to use reflection if I know the type
and
method I need to execute. I would usually resort to Reflection only when
I really need to (late binding because of unknown types, etc). Just a
thought..
Imran.
"Rick Palmer" <ri*********@we love.com> wrote in message
news:68******** *************** *********@4ax.c om... Yes, but the way you've show below, if I added a new report, I would
have to add it:
1) to the Enum
2) to the Case Select Statement
3) to the With... statement that fills the arraylist
in addition to writing the new code....That leaves two chances for me
to forget to add it somewhere and make myself look like like a dumbass
when it goes into production. The way I'm trying, you would only have
to add an entry to the combobox and add the code.
I actually figured out how to do this without using AddHandler.
Instead of changing handler for the button.click event, I just use one
handler, ion which I use System.Type.Inv okeMember to call the
subroutine named in the combobox.
On Wed, 6 Oct 2004 15:00:17 -0400, "Imran Koradia"
<no****@microso ft.com> wrote:
>Instead of doing that, you could do something like this:
>
>Public Class Form1
> Inherits System.Windows. Forms.Form
> ' omiting designer code..
> ' one button - Button1
> ' one combobox - Combobox1
>
> Enum ReportTypes
> Report1
> Report2
> Report3
> End Enum
>
> Private arr As New ArrayList
>
> Private Sub Form1_Load(ByVa l sender As System.Object, _
> ByVal e As System.EventArg s) Handles MyBase.Load
> With arr
> .Add(ReportType s.Report1)
> .Add(ReportType s.Report2)
> .Add(ReportType s.Report3)
> End With
> ComboBox1.DataS ource = arr
> End Sub
>
> Private Sub Button1_Click(B yVal sender As System.Object, _
> ByVal e As System.EventArg s) Handles Button1.Click
> Select Case ComboBox1.Selec tedIndex
> Case ReportTypes.Rep ort1
> ' call Report1 procedure..
> Case ReportTypes.Rep ort2
> ' call Report2 procedure..
> Case ReportTypes.Rep ort3
> ' call Report3 procedure..
> End Select
> End Sub
>
>End Class
>
>hope that helps..
>Imran.
>
>"Rick Palmer" <ri*********@we love.com> wrote in message
>news:fa******* *************** **********@4ax. com...
>> I have an app I'm working on that will allow a user to run one of 5
>> reports. The report names are in a combobox on my form. I have a
sub >> defined for each report that has the exact same name as is displayed
>> in the combobox. I have one button on the form to start processing.
>> What I want to do is this: When the user selects the report they
want >> to run from the combobox, I want to dynamically bind the appropriate
>> sub to the button's click event. Since the sub names are the same
as >> the display names in the box, I'm wanting to do it like this:
>>
>> Addhandler Button1.Click, combobox1.text
>>
>> Unfortunately, that makes VB look for a sub called "combobox1.text ",
>> instead of looking for the function named in combobox1.text. Anyone
>> know how to do what I'm trying to do????
>>
>> -rp
>
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
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Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
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Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: agi2029 |
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Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
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I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
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A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
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Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
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How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
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In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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