【强烈推荐】开源C#工具类MSCL系列（二）控件赋值取值帮助类

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Reflection;
using System.Data;
using System.Collections;

namespace MSCL
{
/// <summary>
/// 控件绑定赋值类
/// </summary>
public class ControlsHelper
{
#region 获取相应控件的值
/// <summary>
/// 获取控件值
/// </summary>
/// <param name="c">控件</param>
/// <returns></returns>
public static string GetControlValue(Control c)
{
string name = c.GetType().Name;
string str2 = "";
switch (name)
{
case "label":
{
Label lbl = (Label)c;
return lbl.Text;
}
case "TextBox":
{
TextBox box = (TextBox)c;
return box.Text;
}
case "CheckBox":
{
CheckBox box2 = (CheckBox)c;
return box2.Checked.ToString();
}
case "CheckBoxList":
{
CheckBoxList list = (CheckBoxList)c;
foreach (ListItem item in list.Items)
{
if (item.Selected)
{
if (str2.Length > 0)
{
str2 = str2 + ",";
}
str2 = str2 + item.Value;
}
}
return str2;
}
case "DropDownList":
{
DropDownList list2 = (DropDownList)c;
foreach (ListItem item2 in list2.Items)
{
if (item2.Selected)
{
if (str2.Length > 0)
{
str2 = str2 + ",";
}
str2 = str2 + item2.Value;
}
}
return str2;
}
case "ListBox":
{
ListBox box3 = (ListBox)c;
foreach (ListItem item3 in box3.Items)
{
if (item3.Selected)
{
if (str2.Length > 0)
{
str2 = str2 + ",";
}
str2 = str2 + item3.Value;
}
}
return str2;
}
case "RadioButton":
{
RadioButton button = (RadioButton)c;
return button.Checked.ToString();
}
case "RadioButtonList":
{
RadioButtonList list3 = (RadioButtonList)c;
foreach (ListItem item4 in list3.Items)
{
if (item4.Selected)
{
if (str2.Length > 0)
{
str2 = str2 + ",";
}
str2 = str2 + item4.Value;
}
}
return str2;
}
case "HtmlInputCheckBox":
{
HtmlInputCheckBox box4 = (HtmlInputCheckBox)c;
return box4.Checked.ToString();
}
case "HtmlInputHidden":
{
HtmlInputHidden hidden = (HtmlInputHidden)c;
return hidden.Value;
}
case "HtmlInputRadioButton":
{
HtmlInputRadioButton button2 = (HtmlInputRadioButton)c;
return button2.Checked.ToString();
}
case "HtmlInputText":
{
HtmlInputText text = (HtmlInputText)c;
return text.Value;
}
case "HtmlSelect":
{
HtmlSelect select = (HtmlSelect)c;
foreach (ListItem item5 in select.Items)
{
if (item5.Selected)
{
if (str2.Length > 0)
{
str2 = str2 + ",";
}
str2 = str2 + item5.Value;
}
}
return str2;
}
case "HtmlTextArea":
{
HtmlTextArea area = (HtmlTextArea)c;
return area.Value;
}
}
return str2;
}
#endregion

#region 赋值给相应的控件
/// <summary>
/// 赋值给相应的控件
/// </summary>
/// <param name="c">控件</param>
/// <param name="value">赋值</param>
/// <param name="target">是否可编辑</param>
public static void SetControlValue(Control c, string value, bool target)
{
switch (c.GetType().Name)
{
case "Label":
{
Label lbl = (Label)c;
lbl.Text = value;
lbl.Enabled = target ? true : false;
return;
}
case "TextBox":
{
TextBox box = (TextBox)c;
box.Text = value;
box.Enabled = target ? true : false;
return;
}
case "CheckBox":
{
CheckBox box2 = (CheckBox)c;
box2.Checked = value.ToLower() == "true";
box2.Enabled = target ? true : false;
return;
}
case "CheckBoxList":
{
CheckBoxList list = (CheckBoxList)c;
foreach (ListItem item in list.Items)
{
if (value == item.Value)
{
item.Selected = true;
}
else
{
item.Selected = false;
}
}
list.Enabled = target ? true : false;
break;
}
case "DropDownList":
{
DropDownList list2 = (DropDownList)c;
list2.SelectedValue = value;
list2.Enabled = target ? true : false;
return;
}
case "ListBox":
{
ListBox box3 = (ListBox)c;
foreach (ListItem item2 in box3.Items)
{
if (value == item2.Value)
{
item2.Selected = true;
}
else
{
item2.Selected = false;
}
}
box3.Enabled = target ? true : false;
break;
}
case "RadioButton":
{
RadioButton button = (RadioButton)c;
button.Checked = value.ToLower() == "true";
button.Enabled = target ? true : false;
return;
}
case "RadioButtonList":
{
RadioButtonList list3 = (RadioButtonList)c;
foreach (ListItem item3 in list3.Items)
{
if (value == item3.Value)
{
item3.Selected = true;
}
else
{
item3.Selected = false;
}
}
list3.Enabled = target ? true : false;
break;
}
case "HtmlInputCheckBox":
{
HtmlInputCheckBox box4 = (HtmlInputCheckBox)c;
box4.Checked = value.ToLower() == "true";
box4.Disabled = target ? true : false;
return;
}
case "HtmlInputHidden":
{
HtmlInputHidden hidden = (HtmlInputHidden)c;
hidden.Value = value;
hidden.Disabled = target ? true : false;
return;
}
case "HtmlInputRadioButton":
{
HtmlInputRadioButton button2 = (HtmlInputRadioButton)c;
button2.Checked = value.ToLower() == "true";
button2.Disabled = target ? true : false;
return;
}
case "HtmlInputText":
{
HtmlInputText text = (HtmlInputText)c;
text.Value = value;
text.Disabled = target ? true : false;
return;
}
case "HtmlSelect":
{
HtmlSelect select = (HtmlSelect)c;
foreach (ListItem item4 in select.Items)
{
if (value == item4.Value)
{
item4.Selected = true;
}
else
{
item4.Selected = false;
}
}
select.Disabled = target ? true : false;
break;
}
case "HtmlTextArea":
{
HtmlTextArea area = (HtmlTextArea)c;
area.Value = value;
area.Disabled = target ? true : false;
break;
}
default:
return;
}
}
#endregion

#region DropDownList无限递归显示层次关系
/// <summary>
/// 创建无限分级下拉列表框
/// </summary>
/// <param name="ddlst">下拉控件</param>
/// <param name="dt">源DataTable</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
public static void CreateLevelDropDown(DropDownList ddlst, DataTable dt, string text, string value, string parentid)
{
ArrayList allItems = new ArrayList();
DataRow[] rows = dt.Select(parentid + "=0");
foreach (DataRow row in rows)
CreateLevelDropDownAssistant(dt, ref   allItems, row, string.Empty, text, value, parentid);
ListItem[] items = new ListItem[allItems.Count];
allItems.CopyTo(items);
ddlst.Items.AddRange(items);
}

/// <summary>
/// 递归绑定子节点
/// </summary>
/// <param name="dt">源DataTable</param>
/// <param name="items">数组</param>
/// <param name="parentRow">当前节点</param>
/// <param name="curHeader">前缀</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
private static void CreateLevelDropDownAssistant(DataTable dt, ref   ArrayList items, DataRow parentRow, string curHeader, string text, string value, string parentid)
{
ListItem newItem = new ListItem(curHeader + Until.CutString(parentRow[text].ToString(), 18, true), parentRow[value].ToString());
items.Add(newItem);
DataRow[] rows = dt.Select(parentid + "=" + newItem.Value);
for (int i = 0; i < rows.Length - 1; i++)
CreateLevelDropDownAssistant(dt, ref   items, rows[i], curHeader.Replace("┣", "┃").Replace("┗", "┣") + "┣", text, value, parentid);

if (rows.Length > 0)
CreateLevelDropDownAssistant(dt, ref   items, rows[rows.Length - 1], curHeader.Replace("┣", "┃").Replace("┗", "┣") + "┗", text, value, parentid);
}

#endregion

#region TreeView 无限递归显示层次关系目录树
/// <summary>
/// 创建无限分级目录树TreeView
/// </summary>
/// <param name="treeview">TreeView空间</param>
/// <param name="dt">数据源DataTable</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
public static void CreateLevelTreeView(TreeView treeview, DataTable dt, string text, string value, string parentid)
{
DataView dv = dt.DefaultView;
dv.RowFilter = parentid + "=0";
foreach (DataRowView drv in dv)
{
TreeNode node = new TreeNode();
node.Text = drv[text].ToString();
node.Value = drv[value].ToString();
node.Expanded = false;
treeview.Nodes.Add(node);
CreatTreeViewChildNode(dv, node, text, value, parentid);
}
}

/// <summary>
/// 递归绑定子节点
/// </summary>
/// <param name="dv">源DataView</param>
/// <param name="parentNode">当前节点</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
private static void CreatTreeViewChildNode(DataView dv, TreeNode parentNode, string text, string value, string parentid)
{
dv.RowFilter = parentid + "=" + parentNode.Value;
foreach (DataRowView row in dv)
{
TreeNode replyNode = new TreeNode();
replyNode.Text = row[text].ToString();
replyNode.Value = row[value].ToString();
replyNode.Expanded = false;
parentNode.ChildNodes.Add(replyNode);
CreatTreeViewChildNode(dv, replyNode, text, value, parentid);
}
}

/// <summary>
/// 创建无限分级目录树TreeView
/// </summary>
/// <param name="treeview">TreeView空间</param>
/// <param name="dt">数据源DataTable</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="url">url字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
public static void CreateLevelTreeView(TreeView treeview, DataTable dt, string text, string value, string url, string parentid)
{
DataView dv = dt.DefaultView;
dv.RowFilter = parentid + "=0";
foreach (DataRowView drv in dv)
{
TreeNode node = new TreeNode();
node.Text = drv[text].ToString();
node.Value = drv[value].ToString();
node.NavigateUrl = drv[url].ToString();
node.Expanded = false;
treeview.Nodes.Add(node);
CreatTreeViewChildNode(dv, node, text, value, url, parentid);
}
}

/// <summary>
/// 递归绑定子节点
/// </summary>
/// <param name="dv">源DataView</param>
/// <param name="parentNode">当前节点</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="url">url字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
private static void CreatTreeViewChildNode(DataView dv, TreeNode parentNode, string text, string value, string url, string parentid)
{
dv.RowFilter = parentid + "=" + parentNode.Value;
foreach (DataRowView row in dv)
{
TreeNode replyNode = new TreeNode();
replyNode.Text = row[text].ToString();
replyNode.Value = row[value].ToString();
replyNode.NavigateUrl = row[url].ToString();
replyNode.Expanded = false;
parentNode.ChildNodes.Add(replyNode);
CreatTreeViewChildNode(dv, replyNode, text, value, url, parentid);
}
}
#endregion

#region 创建无限分级ListBox
/// <summary>
/// 创建无限分级ListBox
/// </summary>
/// <param name="ddlst">ListBox控件</param>
/// <param name="dt">源DataTable</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
public static void CreateLevelListBox(ListBox ddlst, DataTable dt, string text, string value, string parentid)
{
ArrayList allItems = new ArrayList();
DataRow[] rows = dt.Select(parentid + "=0");
foreach (DataRow row in rows)
CreateLevelListBoxAssistant(dt, ref   allItems, row, string.Empty, text, value, parentid);
ListItem[] items = new ListItem[allItems.Count];
allItems.CopyTo(items);
ddlst.Items.AddRange(items);
}

/// <summary>
/// 递归绑定子节点
/// </summary>
/// <param name="dt">源DataTable</param>
/// <param name="items">数组</param>
/// <param name="parentRow">当前节点</param>
/// <param name="curHeader">前缀</param>
/// <param name="text">text字段</param>
/// <param name="value">value字段</param>
/// <param name="parentid">深度字段 例如parentid</param>
private static void CreateLevelListBoxAssistant(DataTable dt, ref   ArrayList items, DataRow parentRow, string curHeader, string text, string value, string parentid)
{
ListItem newItem = new ListItem(curHeader + Until.CutString(parentRow[text].ToString(), 18, true), parentRow[value].ToString());
items.Add(newItem);
DataRow[] rows = dt.Select(parentid + "=" + newItem.Value);
for (int i = 0; i < rows.Length - 1; i++)
CreateLevelListBoxAssistant(dt, ref   items, rows[i], curHeader.Replace("┣", "┃").Replace("┗", "┣") + "┣", text, value, parentid);

if (rows.Length > 0)
CreateLevelListBoxAssistant(dt, ref   items, rows[rows.Length - 1], curHeader.Replace("┣", "┃").Replace("┗", "┣") + "┗", text, value, parentid);
}
#endregion

#region 反射自动设置或者获取控件值 Model实体类
/// <summary>
/// 绑定对象属性 的值到同名控件 <see cref="Control"/>
/// </summary>
/// <param name="obj">属性要绑定窗体控件的对象</param>
/// <param name="container">控件容器 通常是Page 页面  </param>
/// <returns>赋值,实体类给控件赋值：BindObjectToControls(model, this);</returns>
public static void BindObjectToControls(object obj, Control container)
{
if (obj == null) return;

// 得到业务对象属性
//
Type objType = obj.GetType();
PropertyInfo[] objPropertiesArray = objType.GetProperties();

foreach (PropertyInfo objProperty in objPropertiesArray)
{

Control control = container.FindControl(objProperty.Name);

// 列表控件 (DropDownList, CheckBoxList, RadioButtonList)
//
if (control is ListControl)
{
ListControl listControl = (ListControl)control;
foreach (ListItem lItem in listControl.Items)
{
lItem.Selected = false;
}
string propertyValue = objProperty.GetValue(obj, null).ToString();
string[] s = propertyValue.Split(',');
foreach (string i in s)
{
ListItem listItem = listControl.Items.FindByText(i);
if (listItem != null) listItem.Selected = true;
}

}
else if (control != null)
{
// 得到控件属性
//
Type controlType = control.GetType();
PropertyInfo[] controlPropertiesArray = controlType.GetProperties();

//
// 测试通用属性
bool success = false;
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));

if (!success)
success = FindAndSetControlProperty(obj, objProperty, control, controlPropertiesArray, "InnerHtml", typeof(String));

}
}
}

/// <summary>
/// 查找控件属性和类型并尝试给业务对象同名属性赋值
/// </summary>
/// <param name="obj">已找到属性的对象</param>
/// <param name="objProperty">已找到对象 的 属性</param>
/// <param name="control">控件ID和业务对象属性名匹配的控件</param>
/// <param name="controlPropertiesArray">控件属性集合</param>
/// <param name="propertyName">要设置的控件属性名称</param>
/// <param name="type">控件属性类型校正</param>
/// <returns>属性是否被找到并设置</returns>
private static bool FindAndSetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)
{
// 遍历控件属性
//
foreach (PropertyInfo controlProperty in controlPropertiesArray)
{
// 检查属性名称和类型
//
if (controlProperty.Name == propertyName && controlProperty.PropertyType == type)
{
// 设置控件属性的值到业务对象
//
controlProperty.SetValue(control, Convert.ChangeType(objProperty.GetValue(obj, null), type), null);
return true;
}
}
return false;
}

/// <summary>
/// 设置控件 <see cref="Control"/>s值到业务对象
/// </summary>
/// <param name="obj">要绑定的业务对象</param>
/// <param name="container">控件容器</param>
/// <returns>赋值,实体类给控件赋值：BindControlsToObject(model, this);</returns>
public static void BindControlsToObject(object obj, Control container)
{
if (obj == null) return;

// 获取业务对象属性
//
Type objType = obj.GetType();
PropertyInfo[] objPropertiesArray = objType.GetProperties();

foreach (PropertyInfo objProperty in objPropertiesArray)
{

Control control = container.FindControl(objProperty.Name);
if (control is ListControl)
{
ListControl listControl = (ListControl)control;
string str = "";
if (listControl.SelectedItem != null)

for (int i = 0; i < listControl.Items.Count; i++)
{
if (listControl.Items[i].Selected)
{
str += listControl.Items[i].Text + ",";
}
}
objProperty.SetValue(obj, Convert.ChangeType(str, objProperty.PropertyType), null);

}
else if (control is HtmlInputHidden)
{

try
{
HtmlInputHidden hidControl = (HtmlInputHidden)control;
//hidControl.Value = hidControl.Value==""?"0":hidControl.Value;
objProperty.SetValue(obj, Convert.ChangeType(hidControl.Value, objProperty.PropertyType), null);
}
catch
{

}
}
else if (control is HtmlInputText)
{

try
{
HtmlInputText txtControl = (HtmlInputText)control;
//txtControl.Value = txtControl.Value==""?"0":txtControl.Value;
objProperty.SetValue(obj, Convert.ChangeType(txtControl.Value, objProperty.PropertyType), null);
}
catch
{

}
}

else if (control != null)
{
// 获取控件属性
//
Type controlType = control.GetType();
PropertyInfo[] controlPropertiesArray = controlType.GetProperties();

// 尝试通用属性
//
bool success = false;
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Checked", typeof(bool));

if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "SelectedDate", typeof(DateTime));

if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Value", typeof(String));

if (!success)
success = FindAndGetControlProperty(obj, objProperty, control, controlPropertiesArray, "Text", typeof(String));
}
}
}

/// <summary>
/// 查找控件值并尝试赋值给同名业务对象属性
/// </summary>
/// <param name="obj">待赋值的业务对象</param>
/// <param name="objProperty">业务对象属性</param>
/// <param name="control">同名控件</param>
/// <param name="controlPropertiesArray">控件数组</param>
/// <param name="propertyName">得到的控件属性名称</param>
/// <param name="type">控件属性类型</param>
/// <returns>属性是否找到</returns>
private static bool FindAndGetControlProperty(object obj, PropertyInfo objProperty, Control control, PropertyInfo[] controlPropertiesArray, string propertyName, Type type)
{
// 遍历控件属性
//
foreach (PropertyInfo controlProperty in controlPropertiesArray)
{
// 检查名称和类型
//
if (controlProperty.Name == propertyName && controlProperty.PropertyType == typeof(String))
{
// 控件赋值给业务对象
//
try
{
Object ctrValue = Convert.ChangeType(controlProperty.GetValue(control, null), objProperty.PropertyType);
objProperty.SetValue(obj, ctrValue, null);

return true;
}
catch
{
//
// 没有找到控件对应的业务对象属性
return false;
}
}
}
return false;
}
#endregion

#region 数据源
/// <summary>
/// 获取或设置源，该源包含用于填充控件中的项的值列表。
/// </summary>
private static object dataSource;

public static object DataSource
{
get
{
if (dataSource is DataSet)
{
DataSet ds = dataSource as DataSet;
dataSource = ds.Tables[0];
}
else if (dataSource is DataTable)
{
DataTable dt = dataSource as DataTable;
dataSource = dt;
}
else if (dataSource is DataView)
{
DataView dv = dataSource as DataView;
dataSource = dv;
}
else if (dataSource is IDataReader)
{
IDataReader dr = dataSource as IDataReader;
dataSource = dr;
}
return dataSource;
}

set
{
dataSource = value;
}
}

#endregion

#region WebUI绑定Control

/// <summary>
///WebUI绑定Control
/// </summary>
/// <param name="control">定义由所有 ASP.NET 服务器控件共享的属性、方法和事件。</param>
/// <param name="dataSource">获取或设置源，该源包含用于填充控件中的项的值列表。</param>
public static void BindControl(System.Web.UI.Control control, object dataSource)
{
DataSource = dataSource;
if (control is System.Web.UI.WebControls.DataList)
{
(control as System.Web.UI.WebControls.DataList).DataSource = DataSource;
(control as System.Web.UI.WebControls.DataList).DataBind();
}
else if (control is System.Web.UI.WebControls.GridView)
{
(control as System.Web.UI.WebControls.GridView).DataSource = DataSource;
(control as System.Web.UI.WebControls.GridView).DataBind();
}
else if (control is System.Web.UI.WebControls.Repeater)
{
(control as System.Web.UI.WebControls.Repeater).DataSource = DataSource;
(control as System.Web.UI.WebControls.Repeater).DataBind();
}
}

/// <summary>
///WebUI绑定Control
/// </summary>
/// <param name="control">定义由所有 ASP.NET 服务器控件共享的属性、方法和事件。</param>
/// <param name="dataSource">获取或设置源，该源包含用于填充控件中的项的值列表。</param>
/// <param name="dataTextField">获取或设置为列表项提供文本内容的数据源字段。</param>
/// <param name="dataValueField">获取或设置为各列表项提供值的数据源字段。</param>
public static void BindControl(System.Web.UI.Control control, object dataSource, string dataTextField, string dataValueField)
{
DataSource = dataSource;
if (control is System.Web.UI.WebControls.CheckBoxList)
{
(control as System.Web.UI.WebControls.CheckBoxList).DataSource = DataSource;
(control as System.Web.UI.WebControls.CheckBoxList).DataTextField = dataTextField;
(control as System.Web.UI.WebControls.CheckBoxList).DataValueField = dataValueField;
(control as System.Web.UI.WebControls.CheckBoxList).DataBind();
}
else if (control is System.Web.UI.WebControls.DropDownList)
{
(control as System.Web.UI.WebControls.DropDownList).DataSource = DataSource;
(control as System.Web.UI.WebControls.DropDownList).DataTextField = dataTextField;
(control as System.Web.UI.WebControls.DropDownList).DataValueField = dataValueField;
(control as System.Web.UI.WebControls.DropDownList).DataBind();
}
else if (control is System.Web.UI.WebControls.RadioButtonList)
{
(control as System.Web.UI.WebControls.RadioButtonList).DataSource = DataSource;
(control as System.Web.UI.WebControls.RadioButtonList).DataTextField = dataTextField;
(control as System.Web.UI.WebControls.RadioButtonList).DataValueField = dataValueField;
(control as System.Web.UI.WebControls.RadioButtonList).DataBind();
}
else if (control is System.Web.UI.WebControls.BulletedList)
{
(control as System.Web.UI.WebControls.BulletedList).DataSource = DataSource;
(control as System.Web.UI.WebControls.BulletedList).DataTextField = dataTextField;
(control as System.Web.UI.WebControls.BulletedList).DataValueField = dataValueField;
(control as System.Web.UI.WebControls.BulletedList).DataBind();
}
}

#endregion
}
}