Asp.Net清空页面所有textbox的几种方法总结
Asp.Net清空页面所有textbox的几种方法总结
在Asp.Net中清空所有textbox有好几种方法,本文提供几种,供大家参考!
foreach( Control childControl in this.Controls )
{
if( childControl is TextBox )
((TextBox)childControl).Text = "";
}
}
foreach( Control childControl in this.Controls )
{
if( childControl is TextBox )
((TextBox)childControl).Text = "";
}
}
用反射:
FieldInfo[] infos = GetType().GetFields( BindingFlags.Public | BindingFlags.NonPublic|BindingFlags.GetField |BindingFlags.Instance);
for(int i=0;i<infos.Length;i++)
{
if(infos[i].FieldType == typeof(TextBox))
{
((TextBox)infos[i].GetValue(this)).Text = "";
}
}
//使用javascript,好处是不用刷新页面:
function ClearAllTextBox()
{
var obj=window.document.forms[0];
for(i=0;i<obj.elements.length; i++)
{
var elem=obj.elements[i];
if(elem)
{
if(elem.type=="text")
{
elem.value="";
}
}
}
}
//最后一种用Jquery
function ClearText() {
$("input").each(function() {
$(this).val('');
});
}
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缓存
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应用程序缓存:允许缓存所生成的数据,如DataSet
㈠页输出缓存
1、页输出缓存的几中形式
①<%@ OutputCache Duration="60" VaryByParam="None" Location="Any"%>
Location指定在哪个地方缓存,Any任何地方都缓存。
60秒以内看到的都 ......
asp.net自动生成静态页面代码
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
......
1.连接数据库文件
<add name="LocalSqlServer" connectionString="Data Source=.\SQLExpress;Integrated Security=True;AttachDBFilename=|DataDirectory|TimeTracker.mdf;User Instance=true" />
SqlConnectionStringBuilder实例化时,要用到connectionString,如:SqlConnectionStringBuild builder = new SqlCon ......
* Copyright all(c) 2005 ZhongFeng, http://blog.csdn.net/SW515 */
public class ValidateCode : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
this.CreateCheckCodeImage(GenerateCheckCode());
}
&nb ......