Copy Text From One ASP.NET TextBox To Another

May 22, 2009

Copy Text From One ASP.NET TextBox To Another

Friday, May 22, 2009 Posted by Suprotim Agarwal
Labels: ASP.NET

Here's a simple way of copying Text From One ASP.NET Text Box to Another as the user types, using JavaScript

Add the following TextBox to your page

<asp:TextBox ID="txtOne" runat="server" onkeyup="OneTextToOther();"></asp:TextBox>

<asp:TextBox ID="txtTwo" runat="server"></asp:TextBox>

Now add the following JavaScript in the <head> section of your page

<head>

    <title></title>

    <script type="text/javascript">

        function OneTextToOther() {

            var first = document.getElementById('<%= txtOne.ClientID %>').value;

            document.getElementById('<%= txtTwo.ClientID %>').value = first;

        }  

    </script>

</head>

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About The Author

Suprotim Agarwal, ASP.NET Architecture MVP works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He has also written an EBook 51 Recipes using jQuery with ASP.NET Controls.

Follow him on twitter @suprotimagarwal