<Collection>TextBox获得焦点，选中文本
<asp:TextBox ID="TextBoxUserID" runat="server" style="width:160px" onfocus="javascript:this.select()"></asp:TextBox>
<input type="text" onfocus="this.select()" value="sssssbbbbccc">
<asp:TextBox ID="TextBoxUserID" runat="server" style="width:160px" onfocus="javascript:this.select()"></asp:TextBox>
<input type="text" onfocus="this.select()" value="sssssbbbbccc">
