VB.NET
textbox.Attributes.Add("Value", "請輸入帳號")
textbox.Attributes.Add("OnFocus", "if(this.value=='請輸入帳號') {this.value=''}")
textbox.Attributes.Add("OnBlur", "if(this.value==''){this.value='請輸入帳號'}")
javascript
Attributes Even
OnFocus="javascript:if(this.value=='請輸入帳號') {this.value=''}"
OnBlur="javascript:if(this.value=='') {this.value='請輸入帳號'}"
----------------------------------------------------------------------------
OnFocus="javascript:if(this.value=='請輸入帳號') {this.value=''}"
OnBlur="javascript:if(this.value==''){this.value='請輸入帳號'}">
