1.锚记
<a href="#com"></a> <a name="com"> </a>
2.选择和自动清空文本框内容
选中就清空文本框
<asp:TextBox onClick="this.Value=''" >
选中就全选文本框，输入内容就覆盖
<asp:TextBox onClick="this.Value=select()" >
3.C#语言进行验证码GDI绘图见2.12转载
C#基础回顾：用GDI+绘制验证码4.将指定字符串按照指定长度截断，三个参数
/// <summary>
/// 将指定字符串按指定长度进行剪切，
/// </summary>
/// <param name= "oldStr "> 需要截断的字符串 </param>
/// <param name= "maxLength "> 字符串的最大长度 </param>
/// <param name= "endWith "> 超过长度的后缀 </param>
/// <returns> 如果超过长度，返回截断后的新字符串加上后缀，否则，返回原字符串 </returns>
public static string StringTruncat(string oldStr, int maxLength, string endWith)
{
if (string.IsNullOrEmpty(oldStr))
// throw new NullReferenceException( "原字符串不能为空 ");
return oldStr + endWith;
if (maxLength < 1)
throw new Exception("返回的字符串长度必须大于[0] ");
if (oldStr.Length > maxLength)
{
string strTmp = oldStr.Substring(0, maxLength);
if (string.IsNullOrEmpty(endWith))
return strTmp;
else
return strTmp + endWith;
}
return oldStr;
}5，.NET页面传值
//txtKey为TextBox内容
string key = txtKey.Text.Trim();
//radTitle为radioBotton 中的类别name 还一个是内容
string action = radTitle.Checked ? "bytitle" : "bycontent";
//页面跳转
Response.Redirect("~/searchres.aspx?key=" + Server.UrlEncode(key) + "&action=" + action);
----------------------------------------------------------------------
searchres.aspx
string key =Server.UrlDecode( Request.QueryString["key"]);
string action = Request.QueryString["action"];
if ("bytitle" == action)
{
// 按标题搜索
gvNews.DataSource = new NewsManager().SelectByTitle(key);
gvNews.DataBind();
}
else
{
// 按内容搜索
gvNews.DataSource = new NewsManager().SelectByContent(key);
gvNews.DataBind();
}
