TextBox Auto Expandable in ASP.NET

I have a TextBox like this;

<asp:TextBox id="TextBox1" TextMode="SingleLine" runat="server" />

Is there any w开发者_运维知识库ay makingAuto Expandable without Javascript or any other technology?

Can i do that just with ASP.NET ? (Some properties maybe)

OR what is the easiest way?

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You can use ASP.NET AJAX ResizableControl Extender if you plan on using ajax control toolkit.(Which internally uses javascript I think), I'm not aware of any other non-javascript way.

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You only can make it without javascript if you already know the content and you don't want the width to change dynamically while the user types. Something like Width="<%=(SourceString.Length * 10)%>"

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You can use the dynamic server tag for setting the Width.

Width='<%# (Eval("DataSourceField").ToString().Length * 8)%>'

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protected void TextBox1_TextChanged(object sender, EventArgs e)
    {
        int i = TextBox1.Text.Length;
        int rowsize = (i / 10)+2;
        TextBox1.Rows = rowsize;
        TextBox1.Focus();
    }

Try This...........