利用封装向页面控件赋值

    一个表中含有N多个字段,如果需要全部显示,你将会怎么做?

如果你还在手动绑定,不觉得太过于烦躁了吗?

   不多说,直接实例:

1 .目标页面:

  

人懒,就3个控件吧.......

 cs代码:

只需要调用 SetModelValueToControl() 方法就行了.

SetModelValueToControl()代码如下:

View Code 1 ///<summary> 2 ///将 Model对象绑定页面控件 3 ///</summary> 4 ///<param name="model"></param> 5 public void SetModelValueToControl(object model) 6 { 7 8 SetModelValueToControl(model, this); 9 10 }11 ///<summary>12 /// 将 Model对象绑定页面控件13 ///</summary>14 ///<param name="model">对象</param>15 ///<param name="parentControl">页面的容器..form1 ,page 等</param>16 protected void SetModelValueToControl(object model, Control parentControl)17 {18 if (model == null) return;19 Type type = model.GetType();20 PropertyInfo[] info = type.GetProperties();21 Control c = null; ;22 object value=null;23 foreach (PropertyInfo p in info)24 { 25 c = checkControl(p.Name, parentControl);26 if (c != null)27 {28 type = c.GetType();29 if (type.Equals(typeof(TextBox)))30 {31 value = p.GetValue(model, null);32 }33 if (type.Equals(typeof(DropDownList)))34 {35 value = p.GetValue(model, null);36 }37 38 BindControlData(type, c, value);39 }40 41 42 }43 }

检查控件是否存在:对应不同的控件,需要不同方式处理.这里您动动脑,自己完成吧!

View Code 1 ///<summary> 2 /// 检查控件 3 ///</summary> 4 ///<param name="name">字段名,如 txtUsername ,则 传入 Username</param> 5 ///<param name="parentcontrol">目标容器</param> 6 ///<returns></returns> 7 private Control checkControl(string name, Control parentcontrol) 8 { 9 Control c = null; ;10 if (parentcontrol.FindControl("txt" + name) != null)11 {12 c = parentcontrol.FindControl("txt" + name);13 }14 if (parentcontrol.FindControl("dlist" + name) != null)15 {16 c = parentcontrol.FindControl("dlist" + name);17 }18 return c;19 }

最关键的方法.向页面绑定数据

View Code 1 ///<summary> 2 /// 向页面绑定数据 3 ///</summary> 4 ///<param name="type"></param> 5 ///<param name="c"></param> 6 ///<param name="value"></param> 7 protected void BindControlData(Type type, Control c, object value) 8 { 9 10 if (type.Equals(typeof(TextBox)))11 {12 if (value == null)13 {14 value = "";15 }16 ((TextBox)c).Text = value.ToString().Trim();17 }18 if (type.Equals(typeof(DropDownList)))19 {20 DropDownList ddlist = (DropDownList)c;21 if (value == null)22 {23 value = "";24 ddlist.SelectedIndex = 0;25 }26 else27 {28 ddlist.ClearSelection();29 ddlist.Items.Add(value.ToString());30 }31 }

成功输出:

源码地址:http://files.cnblogs.com/xyong/Demo_BindControl.zip

 

转载于:https://www.cnblogs.com/xyong/archive/2011/10/28/2227437.html