学步园

using System;<br /> using System.Web;<br /> using System.Web.UI;<br /> using System.Web.UI.HtmlControls;<br /> using System.Web.UI.WebControls;<br /> using System.Reflection;</p> <p>//==========================<br /> //author:Dy<br /> //date:20080329<br /> //==========================<br /> namespace BLL<br /> {<br /> /// <summary><br /> /// 说明： 利用反射将业务对象和控件绑定<br /> /// 本类有两个静态方法 <see cref="BindObjectToControls"/> 和 <see cref="BindControlsToObject"/><br /> /// 用来绑定控件值或对象属性 <see cref="Control"/><br /> /// 控件ID 要和 业务对象属性名称 相同<br /> ///<br /> /// </summary><br /> public class FormBinding<br /> {<br /> /// <summary><br /> /// 绑定对象属性 的值到同名控件 <see cref="Control"/><br /> /// </summary><br /> /// <param name="obj">属性要绑定窗体控件的对象</param><br /> /// <param name="container">控件容器 通常是Page 页面 </param><br /> public static void BindObjectToControls(object obj, Control container)<br /> {<br /> if (obj == null) return;</p> <p> // 得到业务对象属性<br /> //<br /> Type objType = obj.GetType();<br /> PropertyInfo[] objPropertiesArray = objType.GetProperties();</p> <p> foreach (PropertyInfo objProperty in objPropertiesArray)<br /> {</p> <p> Control control = container.FindControl(objProperty.Name);</p> <p> // 列表控件 (DropDownList, CheckBoxList, RadioButtonList)<br /> //<br /> if (control is ListControl)<br /> {<br /> ListControl listControl = (ListControl)control;<br /> foreach (ListItem lItem in listControl.Items)<br /> {<br /> lItem.Selected = false;<br /> }<br /> string propertyValue = objProperty.GetValue(obj, null).ToString();<br /> string[] s = propertyValue.Split(',');<br /> foreach (string i in s)<br /> {<br /> ListItem listItem = listControl.Items.FindByText(i);<br /> if (listItem != null) listItem.Selected = true;<br /> }</p> <p> }<br /> else if (control != null)<br /> {<br /> // 得到控件属性<br /> //<br /> Type controlType = control.GetType();<br /> PropertyInfo[] controlPropertiesArray = controlType.GetProperties();</p> <p> //<br /> // 测试通用属性<br /> bool success = false;<br /> success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));</p> <p> if (!success)<br /> success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));</p> <p> if (!success)<br /> success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));</p> <p> if (!success)<br /> success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));</p> <p> if (!success)<br /> success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "InnerHtml", typeof(String));</p> <p> }<br /> }<br /> }</p> <p> /// <summary><br /> /// 查找控件属性和类型并尝试给业务对象同名属性赋值<br /> /// </summary><br /> /// <param name="obj">已找到属性的对象</param><br /> /// <param name="objProperty">已找到对象 的 属性</param><br /> /// <param name="control">控件ID和业务对象属性名匹配的控件</param><br /> /// <param name="controlPropertiesArray">控件属性集合</param><br /> /// <param name="propertyName">要设置的控件属性名称</param><br /> /// <param name="type">控件属性类型校正</param><br /> /// <returns>属性是否被找到并设置</returns><br /> private static bool FindAndSetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)<br /> {<br /> // 遍历控件属性<br /> //<br /> foreach (PropertyInfo controlProperty in controlPropertiesArray)<br /> {<br /> // 检查属性名称和类型<br /> //<br /> if (controlProperty.Name == propertyName && controlProperty.PropertyType == type)<br /> {<br /> // 设置控件属性的值到业务对象<br /> //<br /> controlProperty.SetValue(control, Convert.ChangeType(objProperty.GetValue(obj, null), type), null);<br /> return true;<br /> }<br /> }<br /> return false;<br /> }</p> <p> /// <summary><br /> /// 设置控件 <see cref="Control"/>s值到业务对象<br /> /// </summary><br /> /// <param name="obj">要绑定的业务对象</param><br /> /// <param name="container">控件容器</param><br /> public static void BindControlsToObject(object obj, Control container)<br /> {<br /> if (obj == null) return;</p> <p> // 获取业务对象属性<br /> //<br /> Type objType = obj.GetType();<br /> PropertyInfo[] objPropertiesArray = objType.GetProperties();</p> <p> foreach (PropertyInfo objProperty in objPropertiesArray)<br /> {</p> <p> Control control = container.FindControl(objProperty.Name);<br /> if (control is ListControl)<br /> {<br /> ListControl listControl = (ListControl)control;<br /> string str="";<br /> if (listControl.SelectedItem != null)</p> <p> for (int i = 0; i < listControl.Items.Count; i++)<br /> {<br /> if (listControl.Items[i].Selected)<br /> {<br /> str += listControl.Items[i].Text+",";<br /> }<br /> }<br /> objProperty.SetValue(obj, Convert.ChangeType(str, objProperty.PropertyType), null);</p> <p> }<br /> else if (control is HtmlInputHidden)<br /> {</p> <p> try<br /> {<br /> HtmlInputHidden hidControl = (HtmlInputHidden)control;<br /> //hidControl.Value = hidControl.Value==""?"0":hidControl.Value;<br /> objProperty.SetValue(obj, Convert.ChangeType(hidControl.Value, objProperty.PropertyType), null);<br /> }<br /> catch<br /> {</p> <p> }<br /> }<br /> else if (control is HtmlInputText)<br /> {</p> <p> try<br /> {<br /> HtmlInputText txtControl = (HtmlInputText)control;<br /> //txtControl.Value = txtControl.Value==""?"0":txtControl.Value;<br /> objProperty.SetValue(obj, Convert.ChangeType(txtControl.Value, objProperty.PropertyType), null);<br /> }<br /> catch<br /> {</p> <p> }<br /> }</p> <p> else if (control != null)<br /> {<br /> // 获取控件属性<br /> //<br /> Type controlType = control.GetType();<br /> PropertyInfo[] controlPropertiesArray = controlType.GetProperties();</p> <p> // 尝试通用属性<br /> //<br /> bool success = false;<br /> success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));</p> <p> if (!success)<br /> success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));</p> <p> if (!success)<br /> success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));</p> <p> if (!success)<br /> success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));<br /> }<br /> }<br /> }</p> <p> /// <summary><br /> /// 查找控件值并尝试赋值给同名业务对象属性<br /> ///<br /> /// </summary><br /> /// <param name="obj">待赋值的业务对象</param><br /> /// <param name="objProperty">业务对象属性</param><br /> /// <param name="control">同名控件</param><br /> /// <param name="controlPropertiesArray">控件数组</param><br /> /// <param name="propertyName">得到的控件属性名称</param><br /> /// <param name="type">控件属性类型</param><br /> /// <returns>属性是否找到</returns><br /> private static bool FindAndGetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)<br /> {<br /> // 遍历控件属性<br /> //<br /> foreach (PropertyInfo controlProperty in controlPropertiesArray)<br /> {<br /> // 检查名称和类型<br /> //<br /> if (controlProperty.Name == propertyName && controlProperty.PropertyType == typeof(String))<br /> {<br /> // 控件赋值给业务对象<br /> //<br /> try<br /> {<br /> Object ctrValue = Convert.ChangeType(controlProperty.GetValue(control, null), objProperty.PropertyType);<br /> objProperty.SetValue(obj, ctrValue, null);</p> <p> return true;<br /> }<br /> catch<br /> {<br /> //<br /> // 没有找到控件对应的业务对象属性<br /> return false;<br /> }<br /> }<br /> }<br /> return false;<br /> }<br /> }<br /> }<br />

实体类的属性和控件的id命名一致既可以了

调用时

     赋值,实体类给控件赋值：BLL.FormBinding.BindObjectToControls(model, this);//model为实体类。

     取值，控件的值赋给实体类：BLL.FormBinding.BindControlsToObject(model, this);

一句话完成取值和赋值。