How can Write text and copy The Same Text in other TextBox

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I Need When I Write text in TextBox1

TextBox2 = have The Same Text

For Example
TextBox I write 12345

TextBox2 Automatic Have The Same Number

Posted 5-Dec-15 1:29am

Member 11280947

Updated 5-Dec-15 1:31am

v2

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[no name] 5-Dec-15 7:41am

You can use the Event "TextChanged" of your TextBox1 and copy there the Content of box1 to box 2.

BillWoodruff 5-Dec-15 7:49am

The key question here is "when" ... when do you want to update TextBox2: every time a character is typed into TextBox1 ? every time the Focus is moved away from TextBox1 ? every time the uses presses the 'Enter/Return' key in TextBox1 ?

Can the user type into TextBox2: if so, do you want to do anything with that ?

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OriginalGriff · Answer 1 · 2015-12-05T01:41:00

Solution 2

Handle the TextBox.TextChanged event for the first textbox, and set the text in the second in the handler:

C#

void TextBox1_TextChanged(object sender, EventArgs e)
    {
    TextBox2.Text = TextBox1.Text;
    }

Posted 5-Dec-15 1:41am

OriginalGriff

Comments

Arasappan 5-Dec-15 8:07am

U forgot to said Autopostback="true" Griff

[no name] 5-Dec-15 11:23am

A 5 for a pragmatic Approach.

Suvendu Shekhar Giri · Answer 2 · 2015-12-05T01:40:00

Solution 1

Here is a nice way to do this-

C#

TextBox1.TextChanged += (s, _) =>
        {
            if (!TextBox2.Focused && TextBox1.Text != TextBox2.Text)
            {
                TextBox2.Text = TextBox1.Text;
            }
        };

        TextBox2.TextChanged += (s, _) =>
        {
            if (!TextBox1.Focused && TextBox2.Text != TextBox1.Text)
            {
                TextBox1.Text = TextBox2.Text;
            }
        };

Check here for detailed explanation about why it is better than other methods-
Reference: How can I sync two TextBox control's Text properties?[^]

Hope, it helps :)

Posted 5-Dec-15 1:40am

Suvendu Shekhar Giri

Updated 5-Dec-15 1:41am

v2

Comments

BillWoodruff 5-Dec-15 7:54am

My vote of #1. Copying and pasting code you get from StackOverFlow without your adding some value to it, is really not a good idea. The entry on StackOverflow does not "as you claim" contain any detailed explanation of why it is "better" than any other method.

Newcomers to C# are liable to confused by code that uses lambda expressions for EventHandlers. Also, defining EventHandlers with lambdas means you will never be able to unsubscribe from that event.

Suvendu Shekhar Giri 5-Dec-15 8:21am

Partly agree.. Partly disagree.

1. You are always welcome to downvote if you think it's not useful.
2. I believe copying correct code never a bad idea. I haven't claimed it as mine, provided the link of original answer in StackOverflow.
3. "Basically I'm responding to the TextChanged even on each text box, but making sure that the target text box doesn't have focus and that the text actually has changed. This prevents infinite back-and-forth loop trying to update the text and it makes sure that the current insertion point isn't changed by the text being overwritten."
I thought, it says a lot, my apologies if it doesn't.
4. Completely agree that new comers will get confused of such code. Will keep this in mind in my future answers.
5. If this section requires a complete descriptive answer then I am confused why they named it "Quick Answer".

Lastly, I respect your thoughts. I will definitely follow your suggestions which I feel, I should have and sorry for others.

Thanks a lot :)

BillWoodruff 5-Dec-15 13:46pm

Sri Suvendu, You make a very cogent argument, and I like the way you make it ! I think you are right, and I was too harsh in my evaluation. I am changing my vote to #3. Namaste, Bill

[no name] 5-Dec-15 11:22am

A 5 after start reading the useless hypothetical *) comments/discussions.....

[Edit]*)I forgot paranoid [/Edit]

Suvendu Shekhar Giri 5-Dec-15 11:45am

Thanks :)
Actually Bill is right on few things and may be a user from StackOverflow, where these kind of answers are not appreciated and advised to post more descriptive and reasonable answers. I really agree some of his thoughts on this.

[no name] 5-Dec-15 12:04pm

All this for a simple Task copy text1 to text2. No sorry, it is not worth to discuss ;)