Assume 3 controls on a form....
Textbox1, Textbox2, and Textbox3
If you want Textbox3 to equal Val(Textbox1) + Val(Textbox2)..
How do you hardcode this to Textbox3 ?
16  2228 
Assuming you have already validated that the first 2 textboxes do, in fact
contain numeric data:
Textbox3.Text = CType(Textbox1. Text, Double) + CType(Textbox2. Text, Double)
Or, for better exception management:
Dim x, y, z As Double
Try
x = CType(Textbox1. Text, Double)
y = CType(Textbox2. Text, Double)
z= x + y
Catch e As Exception
Textbox3.Text = "You must enter only numeric data!"
End Try
"Rob" <rw*****@comcas t.net> wrote in message
news:AI******** ************@co mcast.com... Assume 3 controls on a form....
Textbox1, Textbox2, and Textbox3
If you want Textbox3 to equal Val(Textbox1) + Val(Textbox2)..
How do you hardcode this to Textbox3 ?
Thanks Scott,
My "real" question is.... where do you put the code ? Let's say you are
using the designer... May I put "= CType(Textbox1. Text, Double) +
CType(Textbox2. Text, Double)" into a property of TextBox3... or must it be
Event driven (i.e., "On Click")
"Scott M." <s-***@nospam.nosp am> wrote in message
news:uW******** ********@TK2MSF TNGP10.phx.gbl. .. Assuming you have already validated that the first 2 textboxes do, in fact
contain numeric data:
Textbox3.Text = CType(Textbox1. Text, Double) + CType(Textbox2. Text,
Double)
Or, for better exception management:
Dim x, y, z As Double
Try
x = CType(Textbox1. Text, Double)
y = CType(Textbox2. Text, Double)
z= x + y
Catch e As Exception
Textbox3.Text = "You must enter only numeric data!"
End Try
"Rob" <rw*****@comcas t.net> wrote in message
news:AI******** ************@co mcast.com... Assume 3 controls on a form....
Textbox1, Textbox2, and Textbox3
If you want Textbox3 to equal Val(Textbox1) + Val(Textbox2)..
How do you hardcode this to Textbox3 ?
A simple way to do it is in the textchanged event of textbox1 and textbox2
"Rob" <rw*****@comcas t.net> wrote in message
news:Q5******** *************** *******@comcast .com... Thanks Scott,
My "real" question is.... where do you put the code ? Let's say you are
using the designer... May I put "= CType(Textbox1. Text, Double) +
CType(Textbox2. Text, Double)" into a property of TextBox3... or must it be
Event driven (i.e., "On Click")
"Scott M." <s-***@nospam.nosp am> wrote in message
news:uW******** ********@TK2MSF TNGP10.phx.gbl. .. Assuming you have already validated that the first 2 textboxes do, in
fact contain numeric data:
Textbox3.Text = CType(Textbox1. Text, Double) + CType(Textbox2. Text,
Double)
Or, for better exception management:
Dim x, y, z As Double
Try
x = CType(Textbox1. Text, Double)
y = CType(Textbox2. Text, Double)
z= x + y
Catch e As Exception
Textbox3.Text = "You must enter only numeric data!"
End Try
"Rob" <rw*****@comcas t.net> wrote in message
news:AI******** ************@co mcast.com... Assume 3 controls on a form....
Textbox1, Textbox2, and Textbox3
If you want Textbox3 to equal Val(Textbox1) + Val(Textbox2)..
How do you hardcode this to Textbox3 ?
You generally put your code into event handlers or methods that are then
called by other code.
There are many events you can choose from, but the first thing you want to
do is identify "when" do you want your code to execute. You wouldn't put
any of this code into anything that has to do with Textbox3 because you want
to see the answer when someone clicks a button (most likely), so the code
goes into the click event of the button you add to the form.
"Rob" <rw*****@comcas t.net> wrote in message
news:Q5******** *************** *******@comcast .com... Thanks Scott,
My "real" question is.... where do you put the code ? Let's say you are
using the designer... May I put "= CType(Textbox1. Text, Double) +
CType(Textbox2. Text, Double)" into a property of TextBox3... or must it be
Event driven (i.e., "On Click")
"Scott M." <s-***@nospam.nosp am> wrote in message
news:uW******** ********@TK2MSF TNGP10.phx.gbl. .. Assuming you have already validated that the first 2 textboxes do, in
fact contain numeric data:
Textbox3.Text = CType(Textbox1. Text, Double) + CType(Textbox2. Text,
Double)
Or, for better exception management:
Dim x, y, z As Double
Try
x = CType(Textbox1. Text, Double)
y = CType(Textbox2. Text, Double)
z= x + y
Catch e As Exception
Textbox3.Text = "You must enter only numeric data!"
End Try
"Rob" <rw*****@comcas t.net> wrote in message
news:AI******** ************@co mcast.com... Assume 3 controls on a form....
Textbox1, Textbox2, and Textbox3
If you want Textbox3 to equal Val(Textbox1) + Val(Textbox2)..
How do you hardcode this to Textbox3 ?
"Rob" <rw*****@comcas t.net> wrote in message
news:Q5******** *************** *******@comcast .com... Thanks Scott,
My "real" question is.... where do you put the code ? Let's say you are
using the designer... May I put "= CType(Textbox1. Text, Double) +
CType(Textbox2. Text, Double)" into a property of TextBox3... or must it be
Event driven (i.e., "On Click")
In VB6 you'd use the Textbox1_Change and Textbox2_Change events.
Why not TextBox?_TextCh anged ?
Private Sub TextBox1_TextCh anged(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles TextBox1.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
Private Sub TextBox2_TextCh anged(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles TextBox2.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
> In VB6 you'd use the Textbox1_Change and Textbox2_Change events.
Why not TextBox?_TextCh anged ?
You could put this code into a TextChanged event, but it is not the most
common approach (and wasn't in VB 6.0 either). Generally, a button is
created explicitly for users to click to cause some calculation.
Private Sub TextBox1_TextCh anged(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles TextBox1.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
Private Sub TextBox2_TextCh anged(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles TextBox2.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
Your code above isn't really the best approach because you have written the
same thing in 2 places. Now, sure you could create a third procedure that
the first two call so that the code isn't duplicated, but this is besides
the point. The point is to determine which *event* you want to trigger the
code.
"Scott M." <s-***@nospam.nosp am> wrote in message
news:ey******** ******@TK2MSFTN GP12.phx.gbl... In VB6 you'd use the Textbox1_Change and Textbox2_Change events.
Why not TextBox?_TextCh anged ?
You could put this code into a TextChanged event, but it is not the most
common approach (and wasn't in VB 6.0 either). Generally, a button is
created explicitly for users to click to cause some calculation.
Private Sub TextBox1_TextCh anged(ByVal sender As System.Object, ByVal e
As System.EventArg s) Handles TextBox1.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
Private Sub TextBox2_TextCh anged(ByVal sender As System.Object, ByVal e
As System.EventArg s) Handles TextBox2.TextCh anged
TextBox3.Text = TextBox1.Text & TextBox2.Text
End Sub
Your code above isn't really the best approach because you have written
the same thing in 2 places. Now, sure you could create a third procedure
that the first two call so that the code isn't duplicated, but this is
besides the point. The point is to determine which *event* you want to
trigger the code.
The code I gave him was the simplest possible solution and it worked. From
that he can add as much complication as he desires. KISS.
> The code I gave him was the simplest possible solution and it worked. From that he can add as much complication as he desires. KISS.
You think writing the same code in 2 different places is the simpleset
solution? Uh, well ok.
As I said earlier, it's really a matter of choosing between TextChanged and
a button's Click event handler (as you say, they both work) but there are
those who believe (me among them) that you should give the user a control to
interact with in order for an operation to be triggerd.
Both scenarios are simplistic, it's a usability issue (and with my solution,
there is less code to add).
"Scott M." <s-***@nospam.nosp am> wrote in message
news:uz******** *****@TK2MSFTNG P12.phx.gbl... The code I gave him was the simplest possible solution and it worked.
From that he can add as much complication as he desires. KISS.
You think writing the same code in 2 different places is the simpleset
solution? Uh, well ok.
As I said earlier, it's really a matter of choosing between TextChanged
and a button's Click event handler (as you say, they both work) but there
are those who believe (me among them) that you should give the user a
control to interact with in order for an operation to be triggerd.
Both scenarios are simplistic, it's a usability issue (and with my
solution, there is less code to add).
You'll never get it. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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