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Question

I am planning to create a .aspx and .cs file. All I have is basically 2 textbox.

(Please disregards the button in the middle.)

the first textbox is to input the sentence, and I want the other textbox automatically following what I type in the first box. So basically its similar like google translate, but it's not translating the text. Just simply following the text I input in the first textbox.

Any Idea how to do it?

Answer 1

You can also achieve this using JavaScript , see attached code sample.

It uses onKeyUp event for html inputs ' , in your code replace input control ids with clientid snippets as indicated in comments.

Also see this - how to add onKeyUp to asp.net textbox to make this happen in your code.

 function copyText() { //var textBoxFirstClientID = '<%= textBox1.ClientID %>'; //var textBoxSecondClientID = '<%= textBox2.ClientID %>'; var txt1 = document.getElementById('txt1');// use textBoxFirstClientID var txt2 = document.getElementById('txt2');//use textBoxSecondClientID txt2.value = txt1.value; } 

 <asp:textbox id="textBox1">your asp.net textbox 1</asp:button> <input type="text" id="txt1" onkeyup="copyText()"> <br> <br> <asp:textbox id="textBox2">your asp.net textbox 2</asp:textbox> <input type="text" id="txt2" />