.NET VB.net Ability for single line code

[.NET] VB.net Ability for single line code - Printable Version

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+---- Thread: [.NET] VB.net Ability for single line code (/showthread.php?tid=5017898)

VB.net Ability for single line code - Schematic - Oct 10, 2015

Hi, I would like to have multiple line code in just one line, Like I am able to do in other software that I am familiar with.

Example:

Code 
If AetherTextbox5.Text Is "" Then

            AetherTextbox5.Text = "0"

        End If

I would like to turn it into

Code 
If AetherTextbox5.Text Is "" Then AetherTextbox5.Text = "0" End If

Is this possible?

* - oυтlaw - Oct 10, 2015

It's possible but people will make fun of you.

* - TooBaked - Oct 10, 2015

(Oct 10, 2015 11:42 PM)oυтlaw Wrote: It's possible but people will make fun of you.

+1. I was going to comment that it's stupid and pointless. Visual Studio holds your hand while you code VB.net anyways. Lmao

* - 6e756c6c - Oct 10, 2015

Code 
If AetherTextbox5.Text = "" Then AetherTextbox5.Text = "0"

OR:

Code 
AetherTextBox5.Text = If(AetherTextBox5.Text = "", AetherTextBox5.Text = "0", AetherTextBox5.Text)

OR (please don't ever use this method, just demonstrating that it works):

Code 
If AetherTextBox5.Text = "" Then : AetherTextBox5.Text = "0" : End If

My personal preference though would be something like..

Code 
If String.IsNullOrEmpty(AetherTextBox5.Text) Then

     AetherTextBox5.Text = "0"

End If

It really depends on your particular scenario though, I assume you are doing this to multiple textboxes in which case you should probably create a helper function to reduce code redundancy.

Edit:
Don't use 'Is' to compare strings, it's only by magic .NET hackery that your usage of it actually works. In all other cases if you were to initiate a new reference type and use 'Is' it would return false even if they were initiated with the same value. Instead, you should be using '='. :)

* - Schematic - Oct 11, 2015

What would a helper function look like?

Code 
If AetherTextbox5.Text = String.Empty Then

            AetherTextbox5.Text = "0"

        End If

        If AetherTextbox6.Text = String.Empty Then

            AetherTextbox6.Text = "0"

        End If

        If AetherTextbox7.Text = String.Empty Then

            AetherTextbox7.Text = "0"

        End If

        If AetherTextbox8.Text = String.Empty Then

            AetherTextbox8.Text = "0"

        End If

        If AetherTextbox9.Text = String.Empty Then

            AetherTextbox9.Text = "0"

        End If

        If AetherTextbox3.Text = String.Empty Then

            AetherTextbox3.Text = "0"

        End If

        If AetherTextbox11.Text = String.Empty Then

            AetherTextbox11.Text = "0"

        End If

        If AetherTextbox10.Text = String.Empty Then

            AetherTextbox10.Text = "0"

        End If

        If AetherTextbox12.Text = String.Empty Then

            AetherTextbox12.Text = "0"

        End If

        If AetherTextbox13.Text = String.Empty Then

            AetherTextbox13.Text = "0"

        End If

        If AetherTextbox14.Text = String.Empty Then

            AetherTextbox14.Text = "0"

        End If

This is what my redundant script looks like lol

* - Odus - Oct 11, 2015

Create a universal handler and cast the sender to type TextBox. Or if this is for all, just loop through your form's controls (but this won't account for child controls) of type TextBox, then run your check.

To reiterate what Aeon said, never use the colon in place of a new line.

* - SIM-2362662 - Oct 11, 2015

If you want you'r code to look smaller you can use :

Code 
If AetherTextbox5.Text = String.Empty Then AetherTextbox5.Text = "0"

        If AetherTextbox6.Text = String.Empty Then AetherTextbox6.Text = "0"

        If AetherTextbox7.Text = String.Empty Then AetherTextbox7.Text = "0"

        If AetherTextbox8.Text = String.Empty Then AetherTextbox8.Text = "0"

        If AetherTextbox9.Text = String.Empty Then AetherTextbox9.Text = "0"

        If AetherTextbox3.Text = String.Empty Then AetherTextbox3.Text = "0"

        If AetherTextbox11.Text = String.Empty Then AetherTextbox11.Text = "0"

        If AetherTextbox10.Text = String.Empty Then AetherTextbox10.Text = "0"

        If AetherTextbox12.Text = String.Empty Then AetherTextbox12.Text = "0"

        If AetherTextbox13.Text = String.Empty Then AetherTextbox13.Text = "0"

        If AetherTextbox14.Text = String.Empty Then AetherTextbox14.Text = "0"

* - Odus - Oct 11, 2015

I had a thought after reading what you were actually doing. Why not set the Text property of your TextBoxes to 0 or even better, use a NumericUpDown if the input is numeric.

* - nazist - Oct 11, 2015

(Oct 10, 2015 11:52 PM)Aeonhack Wrote:
Code
If AetherTextbox5.Text = "" Then AetherTextbox5.Text = "0"

OR:

Code
AetherTextBox5.Text = If(AetherTextBox5.Text = "", AetherTextBox5.Text = "0", AetherTextBox5.Text)

OR (please don't ever use this method, just demonstrating that it works):

Code
If AetherTextBox5.Text = "" Then : AetherTextBox5.Text = "0" : End If

My personal preference though would be something like..

Code
If String.IsNullOrEmpty(AetherTextBox5.Text) Then AetherTextBox5.Text = "0" End If

It really depends on your particular scenario though, I assume you are doing this to multiple textboxes in which case you should probably create a helper function to reduce code redundancy.

Edit:
Don't use 'Is' to compare strings, it's only by magic .NET hackery that your usage of it actually works. In all other cases if you were to initiate a new reference type and use 'Is' it would return false even if they were initiated with the same value. Instead, you should be using '='. :)

but why we can't use this method
i am used this method some time !!!

Code 
some code Then===> : <== some code ===> : <==  some code

* - 6e756c6c - Oct 11, 2015

(Oct 11, 2015 11:11 PM)nazist Wrote: but why we can't use this method
i am used this method some time !!!

Code
some code Then===> : <== some code ===> : <== some code

Because it doesn't have any effect on your code, it will still be treated as if the lines of code were on separate lines and it makes code extremely difficult to read / maintain. I promise if you work on any kind of major project and have to go back later on to update it, dealing with all those condensed lines is going to be a nightmare.