TextBoxWatermarkExtender(文本框填加水印效果)

<asp:TextBox ID="TextBox2" CssClass="unwatermarked" Width="150" runat="server" />
<br />
        <ajaxToolkit:TextBoxWatermarkExtender ID="TextBoxWatermarkExtender2" runat="server"
                    TargetControlID="TextBox2"
                    WatermarkText="Type Last Name Here"
                    WatermarkCssClass="watermarked" />

TargetControlID  ：目标ID
WatermarkText    ：需要显示的内容
WatermarkCssClass：运用的样式
样式：

/**//*Textbox Watermark*/

.unwatermarked {}{
    height:18px;
    width:148px;
}

.watermarked {}{
    height:20px;
    width:150px;
    padding:2px 0 0 2px;
    border:1px solid #BEBEBE;
    background-color:#F0F8FF;
    color:gray;
}

转载于:https://www.cnblogs.com/ipusr/archive/2007/11/08/953392.html