我们在提交一个表单的时候，可能由于网络或服务器的原因，处理很慢，而用户在处理结果出来之前反复点击按钮提交。这样很容易造成不必要的麻烦甚至是错误。说了这么多，其实就是要实现一个禁用某些控件的一种功能。好了，下面我就介绍自己简单实现的这个小功能。
<div class="codetitle" style="border-left-color: rgb(0, 153, 204); border-left-width: 1px; border-left-style: solid; padding: 0px 3px; margin: 3px auto 0px; width: 640px; clear: both; font-size: 14px; border-top-color: rgb(0, 153, 204); border-top-width: 1px; border-top-style: solid; border-right-color: rgb(0, 153, 204); border-right-width: 1px; border-right-style: solid; line-height: 25.2000007629395px; font-family: Tahoma, Helvetica, Arial, 宋体, sans-serif; background: rgb(242, 246, 251);">代码如下:</div><div class="codebody" id="code97423" style="border: 1px solid rgb(0, 153, 204); padding: 0px 3px 0px 5px; margin: 0px auto 3px; width: 638px; clear: both; font-size: 14px; line-height: 25.2000007629395px; font-family: Tahoma, Helvetica, Arial, 宋体, sans-serif; background: rgb(221, 237, 251);">
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
namespace DotNet.Common.Util
{
/// <summary>
/// 控件枚举,我们在禁用或启用时，就是根据这个枚举来匹配合适的项
/// </summary>
public enum ControlNameEnum
{
Panel = 0, //容器 这个比较常用
TextBox = 1,
Button = 2, //这个也比较常用 比如 按钮提交后的禁用,返回结果后启用
CheckBox = 3,
ListControl = 4,
All = 100 //所有
}
public static class ControlHelper
{
#region 同时禁用或者启用页面的某些控件
/// <summary>
/// 设置是否启用控件
/// </summary>
/// <param name="control"></param>
/// <param name="controlName"></param>
/// <param name="isEnable"></param>
public static void SetControlsEnabled(Control control, ControlNameEnum controlName, bool isEnabled)
{
foreach (Control item in control.Controls)
{
/* 我们仅仅考虑几种常用的asp.net服务器控件和html控件 */
//Panel
if (item is Panel && (controlName == ControlNameEnum.Panel || controlName == ControlNameEnum.All))
{
((Panel)item).Enabled = isEnabled;
}
//TextBox,HtmlTextBox
if (controlName == ControlNameEnum.TextBox || controlName == ControlNameEnum.All)
{
if (item is TextBox)
{
((TextBox)(item)).Enabled = isEnabled;
}
else if (item is HtmlInputText)
{
((HtmlInputText)item).Disabled = isEnabled;
}
else if (item is HtmlTextArea)
{
((HtmlTextArea)(item)).Disabled = isEnabled;
}
}
//Buttons
if (item is Button && (controlName == ControlNameEnum.Button || controlName == ControlNameEnum.All))
{
if (item is Button)
{
((Button)(item)).Enabled = isEnabled;
}
else if (item is HtmlInputButton)
{
((HtmlInputButton)(item)).Disabled = !isEnabled;
}
else if (item is ImageButton)
{
((ImageButton)(item)).Enabled = isEnabled;
}
else if (item is LinkButton)
{
((LinkButton)(item)).Enabled = isEnabled;
}
}
//CheckBox
if (controlName == ControlNameEnum.CheckBox || controlName == ControlNameEnum.All)
{
if (item is CheckBox)
{
((CheckBox)(item)).Enabled = isEnabled;
}
else if (item is HtmlInputCheckBox)
{
((HtmlInputCheckBox)(item)).Disabled = !isEnabled;
}
}
//List Controls
if (controlName == ControlNameEnum.ListControl || controlName == ControlNameEnum.All)
{
if (item is DropDownList)
{
((DropDownList)(item)).Enabled = isEnabled;
}
else if (item is RadioButtonList)
{
((RadioButtonList)(item)).Enabled = isEnabled;
}
else if (item is CheckBoxList)
{
((CheckBoxList)(item)).Enabled = isEnabled;
}
else if (item is ListBox)
{
((ListBox)(item)).Enabled = isEnabled;
}
else if (item is HtmlSelect)
{
((HtmlSelect)(item)).Disabled = !isEnabled;
}
}
//如果项目还有子控件，递归调用该函数
if (item.Controls.Count > 0)
{
SetControlsEnabled(item, controlName, isEnabled);
}
}
}
#endregion
}
} </div>
在aspx页面中的调用如下:
代码如下:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ControlHelper.SetControlsEnabled(this.Page, ControlNameEnum.Panel, false); //Panel禁用
}
}