asp.net实现非常实用的自定义页面基类(附源码)

本文实例讲述了asp.net实现非常实用的自定义页面基类。分享给大家供大家参考，具体如下：

看到前面几篇文章（如：《asp.net实现利用反射，泛型，静态方法快速获取表单值到Model的方法》）想到的。下面总结发布一个笔者在开发中常用的一个自定义BasePage类,废话不多说了，直接贴代码。

一、BasePage类

1、代码

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Reflection;
namespace DotNet.Common.WebForm
{
 using DotNet.Common.Model;
 using DotNet.Common.Util;
 public class BasePage : System.Web.UI.Page
 {
  public BasePage()
  {
  }
  protected override void OnInit(EventArgs e)
  {
   base.OnInit(e);
   //CancelFormControlEnterKey(this.Page.Form.Controls); //取消页面文本框的enter key
  }
  #region 取消页面文本控件的enter key功能
  /// <summary>
  /// 在这里我们给Form中的服务器控件添加客户端onkeydown脚步事件，防止服务器控件按下enter键直接回发
  /// </summary>
  /// <param name="controls"></param>
  public virtual void CancelFormControlEnterKey(ControlCollection controls)
  {
   //向页面注册脚本 用来取消input的enter key功能
   RegisterUndoEnterKeyScript();
   foreach (Control item in controls)
   {
    //服务器TextBox
    if (item.GetType() == typeof(System.Web.UI.WebControls.TextBox))
    {
     WebControl webControl = item as WebControl;
     webControl.Attributes.Add("onkeydown", "return forbidInputKeyDown(event)");
    }
    //html控件
    else if (item.GetType() == typeof(System.Web.UI.HtmlControls.HtmlInputText))
    {
     HtmlInputControl htmlControl = item as HtmlInputControl;
     htmlControl.Attributes.Add("onkeydown", "return forbidInputKeyDown(event)");
    }
    //用户控件
    else if (item is System.Web.UI.UserControl)
    {
     CancelFormControlEnterKey(item.Controls); //递归调用
    }
   }
  }
  /// <summary>
  /// 向页面注册forbidInputKeyDown脚本
  /// </summary>
  private void RegisterUndoEnterKeyScript()
  {
   string js = string.Empty;
   System.Text.StringBuilder sb = new System.Text.StringBuilder();
   sb.Append("function forbidInputKeyDown(ev) {");
   sb.Append(" if (typeof (ev) != \"undefined\") {");
   sb.Append(" if (ev.keyCode || ev.which) {");
   sb.Append(" if (ev.keyCode == 13 || ev.which == 13) { return false; }");
   sb.Append(" } } }");
   js = sb.ToString();
   if (!this.Page.ClientScript.IsClientScriptBlockRegistered("forbidInput2KeyDown"))
    this.Page.ClientScript.RegisterClientScriptBlock(typeof(Page), "forbidInput2KeyDown", js, true);
  }
  #endregion
  #region 利用反射取/赋页面控件的值
  /// <summary>
  /// 从页面中取控件值，并给对象赋值
  /// </summary>
  /// <param name="dataType">要被赋值的对象类型</param>
  /// <returns></returns>
  public virtual BaseObj GetFormData(Type dataType)
  {
   BaseObj data = (BaseObj)Activator.CreateInstance(dataType);//实例化一个类
   Type pgType = this.GetType(); //标识当前页面
   BindingFlags bf = BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic;//反射标识
   PropertyInfo[] propInfos = data.GetType().GetProperties();//取出所有公共属性 
   foreach (PropertyInfo item in propInfos)
   {
    FieldInfo fiPage = pgType.GetField(item.Name, bf);//从页面中取出满足某一个属性的字段
    if (fiPage != null) //页面的字段不为空,代表存在一个实例化的控件类
    {
     object value = null;
     Control pgControl = (Control)fiPage.GetValue(this); //根据属性，找到页面对应控件，这要求页面控件命名必须和对象的属性一一对应相同
     //下面取值
     Type controlType = pgControl.GetType();
     if (controlType == typeof(Label))
     {
      value = ((Label)pgControl).Text.Trim();
     }
     else if (controlType == typeof(TextBox))
     {
      value = ((TextBox)pgControl).Text.Trim();
     }
     else if (controlType == typeof(HtmlInputText))
     {
      value = ((HtmlInputText)pgControl).Value.Trim();
     }
     else if (controlType == typeof(HiddenField))
     {
      value = ((HiddenField)pgControl).Value.Trim();
     }
     else if (controlType == typeof(CheckBox))
     {
      value = (((CheckBox)pgControl).Checked);//复选框
     }
     else if (controlType == typeof(DropDownList))//下拉框
     {
      value = ((DropDownList)pgControl).SelectedValue;
     }
     else if (controlType == typeof(RadioButtonList))//单选框列表
     {
      value = ((RadioButtonList)pgControl).SelectedValue;
      if (value != null)
      {
       if (value.ToString().ToUpper() != "TRUE" && value.ToString().ToUpper() != "FALSE")
        value = value.ToString() == "1" ? true : false;
      }
     }
     else if (controlType == typeof(Image)) //图片
     {
      value = ((Image)pgControl).ImageUrl;
     }
     try
     {
      object realValue = null;
      if (item.PropertyType.Equals(typeof(Nullable<DateTime>))) //泛型可空类型 
      {
       if (value != null)
       {
        if (string.IsNullOrEmpty(value.ToString()))
        {
         realValue = null;
        }
        else
        {
         realValue = DateTime.Parse(value.ToString());
        }
       }
      }
      else if (item.PropertyType.Equals(typeof(Nullable))) //可空类型 
      {
       realValue = value;
      }
      else
      {
       try
       {
        realValue = Convert.ChangeType(value, item.PropertyType);
       }
       catch
       {
        realValue = null;
       }
      }
      item.SetValue(data, realValue, null);
     }
     catch (FormatException fex)
     {
      DotNet.Common.Util.Logger.WriteFileLog(fex.Message, HttpContext.Current.Request.PhysicalApplicationPath + "LogFile");
      throw fex;
     }
     catch (Exception ex)
     {
      DotNet.Common.Util.Logger.WriteFileLog(ex.Message, HttpContext.Current.Request.PhysicalApplicationPath + "LogFile");
      throw ex;
     }
    }
   }
   return data;
  }
  /// <summary>
  /// 通过对象的属性值，给页面控件赋值
  /// </summary>
  /// <param name="data"></param>
  public virtual void SetFormData(BaseObj data)
  {
   Type pgType = this.GetType();
   BindingFlags bf = BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Static;
   PropertyInfo[] propInfos = data.GetType().GetProperties();
   foreach (PropertyInfo item in propInfos)
   {
    FieldInfo myField = pgType.GetField(item.Name, bf);
    if (myField != null)
    {
     Control myControl = (Control)myField.GetValue(this); //根据属性名取到页面控件
     object value = item.GetValue(data, null); //取对象的属性值
     Type propType = item.PropertyType;
     if (value != null)
     {
      Type valueType = value.GetType();
      try
      {
       Type controlType = myControl.GetType();
       if (controlType == typeof(Label))
       {
        if (valueType == typeof(DateTime))
        {
         ((Label)myControl).Text = (Convert.ToDateTime(value)).ToShortDateString();
        }
        else
        {
         ((Label)myControl).Text = value.ToString();
        }
       }
       else if (controlType == typeof(TextBox))
       {
        if (valueType == typeof(DateTime))
        {
         ((TextBox)myControl).Text = (Convert.ToDateTime(value)).ToShortDateString();
        }
        else
        {
         ((TextBox)myControl).Text = value.ToString();
        }
       }
       else if (controlType == typeof(HtmlInputText))
       {
        if (valueType == typeof(DateTime))
        {
         ((HtmlInputText)myControl).Value = (Convert.ToDateTime(value)).ToShortDateString();
        }