ExtJs GridPanel简单的增删改实现代码

1.首先看下效果图：

2.ext代码

/// <reference path="http://www.cnblogs.com/Resources/ExtJs/vswd-ext_2.0.2.js" /> 
Ext.namespace('XQH.ExtJs.Frame'); 
XQH.ExtJs.Frame.RoleManage = function() { 
this.init(); 
}; 
Ext.extend(XQH.ExtJs.Frame.RoleManage, Ext.util.Observable, { 
init: function() { 
//表单 
addForm = new Ext.form.FormPanel({ 
id: 'addRoleForm', 
width: 460, 
height: 250, 
//样式 
bodyStyle: 'margin:5px 5px 5px 5px', 
frame: true, 
xtype: 'filedset', 
labelWidth: 60, 
items: 
[ 
{ 
xtype: 'fieldset', 
title: '角色信息', 
collapsible: true, 
autoHeight: true, 
autoWidth: true, 
items: 
[ 
{ 
xtype: 'textfield', 
name: 'RoleName', 
fieldLabel: '角色名称', 
emptyText: '必填', 
blankText: '角色名称不能为空', 
allowBlank: false, 
maxLength: 10, 
maxLengthText: '角色不能超过10个字符', 
anchor: '98%' 
} 
] 
}, 
{ 
xtype: 'fieldset', 
title: '角色说明', 
collapsible: true, 
autoHeight: true, 
autoWidth: true, 
items: 
[ 
{ html: '这是说明信息...' } 
] 
} 
], 
reader: new Ext.data.JsonReader({ 
root: 'data', 
fields: [ 
{ name: 'RoleId', mapping: 'RoleId', type: 'int' }, 
{ name: 'RoleName', mapping: 'RoleName', type: 'string' } 
] 
}) 
}); 
//新增用户窗口 
addWin = new Ext.Window({ 
id: 'addRoleWin', 
title: '新增角色', 
width: 480, 
height: 210, 
//背景遮罩 
modal: true, 
//重置大小 
resizable: false, 
//当关闭按钮被点击时执行的动作 
closeAction: 'hide', 
plain: true, 
buttonAlign: 'center', 
items:addForm, 
buttons: 
[ 
{ text: '关闭', handler: function() { Ext.getCmp('addRoleWin').hide(); } }, 
{ text: '提交', id: 'btnSubmit' } 
] 
}); 
//添加角色事件 
function addRoleFunction() { 
var submitButton = this; 
submitButton.disable(); 
var userForm = Ext.getCmp("addRoleForm"); 
if (userForm.form.isValid()) { 
userForm.form.doAction('submit', { 
url: "http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=AddRole", 
method: 'post', 
waitTitle: "请稍候", 
waitMsg: '正在添加数据...', 
success: function(form, action) { 
submitButton.enable(); 
Ext.getCmp('roleGD').store.reload(); 
userForm.ownerCt.hide(); 
}, 
failure: function(form, action) { 
var tip = "新增失败!"; 
if (action.result.rspText != "") 
tip = action.result.rspText; 
Ext.Msg.alert('提示', tip); 
submitButton.enable(); 
} 
}); 
} 
else { 
submitButton.enable(); 
} 
}; 
//添加按钮单击事件 
function btnAddClick() { 
Ext.getCmp('addRoleForm').form.reset(); 
Ext.getCmp("addRoleWin").setTitle('新增角色'); 
Ext.getCmp("addRoleWin").buttons[1].handler = addRoleFunction; 
Ext.getCmp("addRoleWin").show(); 
}; 
//修改角色事件 
function updateRoleFunction() { 
var submitButton = this; 
submitButton.disable(); 
var userForm = Ext.getCmp("addRoleForm"); 
var id = userForm.form.reader.jsonData.data[0].RoleId; 
if (userForm.form.isValid()) { 
userForm.form.doAction('submit', { 
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=UpdateRoleById&RoleId=' + id, 
method: 'post', 
//params:{}, 
waitTitle: "请稍候", 
waitMsg: '正在保存数据...', 
success: function(form, action) { 
submitButton.enable(); 
Ext.getCmp('roleGD').store.reload(); 
userForm.ownerCt.hide(); 
}, 
failure: function(form, action) { 
var tip = "编辑活动保存失败！"; 
if (action.result.text != "" & action.result.text != null) 
tip = action.result.text; 
Ext.Msg.alert('提示', tip); 
submitButton.enable(); 
} 
}); 
} 
else { 
submitButton.enable(); 
} 
}; 
//修改按钮单击事件 
function btnUpdateClick() { 
var grid = Ext.getCmp('roleGD'); 
if (grid.getSelectionModel().getSelections()[0] == undefined) { 
Ext.Msg.alert("提示", "请选中要修改的行"); 
} 
else { 
Ext.getCmp('addRoleWin').setTitle('修改角色'); 
Ext.getCmp("btnSubmit").handler = updateRoleFunction; 
Ext.getCmp("addRoleForm").form.reset(); 
var roleId = grid.getSelectionModel().getSelections()[0].data.RoleId; 
var url = 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=GetRoleById&roleId=' + roleId; 
Ext.getCmp("addRoleWin").show(); 
Ext.getCmp("addRoleForm").load({ 
url: url, 
waitTitle: "请稍候", 
waitMsg: '正在加载数据...', 
success: function(form, action) { 
}, 
failure: function(form, action) { 
var tip = "提交失败"; 
if (action.response.responseText != "") 
tip = action.response.responseText; 
Ext.Msg.alert('提示', tip); 
} 
}); 
} 
}; 
//删除角色函数 
function delRoleFunction() { 
var grid = Ext.getCmp('roleGD'); 
if (grid.getSelectionModel().getSelections()[0] == undefined) { 
Ext.Msg.alert("提示", "请选中要删除的角色"); 
} 
else { 
Ext.MessageBox.confirm('提示', '确实要删除所选的角色吗？', function(btn) { 
if (btn == 'yes') { 
var conn = new Ext.data.Connection(); 
conn.request 
({ 
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=DeleteRoleById', 
params: { Id: grid.getSelectionModel().getSelections()[0].data.RoleId }, 
method: 'post', 
scope: this, 
callback: function(options, success, response) { 
if (success) { 
Ext.getCmp('roleGD').store.reload(); 
} 
else { 
Ext.MessageBox.alert("提示", "删除失败！"); 
} 
} 
}); 
} 
}); 
} 
}; 
//工具栏 
toolBar = new Ext.Toolbar({ 
items: 
[ 
{ text: '新增', id: 'btnAdd' }, 
'-', 
{ text: '修改', id: 'btnUpdate' }, 
'-', 
{ text: '删除', handler:delRoleFunction } 
] 
}); 
//新增按钮 
var addUserBtn = Ext.getCmp('btnAdd'); 
addUserBtn.on('click', btnAddClick); 
//修改按钮 
var btnUpdate = Ext.getCmp('btnUpdate'); 
btnUpdate.on('click', btnUpdateClick); 
var dataStore = new Ext.data.Store({ 
proxy: new Ext.data.HttpProxy({ 
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=GetAllRoles' 
}), 
reader: new Ext.data.JsonReader({ 
root: 'Table', 
totalProperty: 'RecordCount', 
id: 'RoleId', 
fields: ['RoleId', 'RoleName'] 
}) 
}); 
dataStore.load({ params: { start: 0, limit: 20} }); 
//grid 
var roleGrid = new Ext.grid.GridPanel({ 
region: 'center', 
id: 'roleGD', 
title: '角色管理', 
store: dataStore, 
columns: 
[ 
new Ext.grid.RowNumberer({ header: "编号", width: 50 }), 
{ header: "RoleId", width: 50, sortable: false, dataIndex: 'RoleId', hidden: true }, 
{ header: "角色名称", width: 50, sortable: true, dataIndex: 'RoleName' } 
], 
loadMask: { msg: "加载中..." }, 
stripeRows: true, 
viewConfig: { 
forceFit: true 
}, 
sm: new Ext.grid.RowSelectionModel({ singleSelect: true }), 
bbar: new Ext.PagingToolbar({ 
pageSize: 20, 
store: dataStore, 
displayInfo: true, 
displayMsg: "显示第 {0} 条到 {1} 条记录，一共 {2} 条", 
emptyMsg: "没有记录" 
}), 
tbar: toolBar 
}); 
//布局 
var roleView = new Ext.Panel({ 
renderTo: 'roleMain', 
height: 550, 
layout: 'border', 
border: false, 
items: [roleGrid] 
}); 
}, 
destroy: function() { 
} 
});

3.linq代码

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
namespace XQH.ExtJs.LinqDatabase 
{ 
public class RoleLinqAccess 
{ 
LinqDatabaseDataContext db = new LinqDatabaseDataContext(); 
/// <summary> 
/// 获取所有角色 
/// </summary> 
/// <param name="start"></param> 
/// <param name="limit"></param> 
/// <param name="total"></param> 
/// <returns></returns> 
public List<XRole> GetAllRole(int start,int limit,out int total) 
{ 
var q = from r in db.XRole 
select r; 
total = q.Count(); 
if (limit == 0) 
{ 
return q.ToList(); 
} 
else 
{ 
return q.Skip(start).Take(limit).ToList(); 
} 
} 
/// <summary> 
/// 根据ID获取角色 
/// </summary> 
/// <param name="id"></param> 
/// <returns></returns> 
public XRole GetRoleById(int id) 
{ 
var q = from r in db.XRole 
where r.RoleId == id 
select r; 
return q.First(); 
} 
/// <summary> 
/// 新增角色 
/// </summary> 
/// <param name="role"></param> 
/// <returns></returns> 
public List<XRole> AddRole(XRole role) 
{ 
db.XRole.InsertOnSubmit(role); 
db.SubmitChanges(); 
return db.XRole.ToList(); 
} 
/// <summary> 
/// 根据ID删除角色 
/// </summary> 
/// <param name="id"></param> 
/// <returns></returns> 
public List<XRole> DelRoleById(int id) 
{ 
var q = from r in db.XRole 
where r.RoleId == id 
select r; 
db.XRole.DeleteAllOnSubmit(q); 
db.SubmitChanges(); 
return db.XRole.ToList(); 
} 
/// <summary> 
/// 更新角色 
/// </summary> 
/// <param name="role"></param> 
/// <returns></returns> 
public List<XRole> UpdateRole(XRole role) 
{ 
var q = from r in db.XRole 
where r.RoleId == role.RoleId 
select r; 
foreach (XRole r in q) 
{ 
r.RoleId = role.RoleId; 
r.RoleName = role.RoleName; 
} 
db.SubmitChanges(); 
return db.XRole.ToList(); 
} 
} 
}

4.ashx代码

/// <summary> 
/// 获取全部角色 
/// </summary> 
public void GetAllRoles() 
{ 
StringBuilder jsonData = new StringBuilder(); 
int start = Convert.ToInt32(Request["start"]); 
int limit = Convert.ToInt32(Request["limit"]); 
int total = 0; 
List<XRole> lsRole = roleAccess.GetAllRole(start, limit, out total); 
JsonConvert<XRole> json = new JsonConvert<XRole>(); 
jsonData = json.ToGridPanel(lsRole, total); 
Response.Write(jsonData); 
Response.End(); 
} 
/// <summary> 
/// 根据ID获取角色 
/// </summary> 
/// <param name="id"></param> 
/// <returns></returns> 
public void GetRoleById() 
{ 
StringBuilder jsonData = new StringBuilder(); 
bool success = false; 
string rspText = string.Empty; 
string id = Request["RoleId"].ToString(); 
try 
{ 
XRole role = roleAccess.GetRoleById(Convert.ToInt32(id)); 
success = true; 
rspText = "success"; 
JsonConvert<XRole> json = new JsonConvert<XRole>(); 
jsonData = json.ToFormPanel(success, rspText, role); 
} 
catch (Exception ex) 
{ 
success = false; 
rspText = ex.Message; 
} 
Response.Write(jsonData); 
Response.End(); 
} 
/// <summary> 
/// 新增角色 
/// </summary> 
public void AddRole() 
{ 
string jsonStr = string.Empty; 
bool success = false; 
string rspText = string.Empty; 
string roleName = Request["RoleName"].ToString(); 
XRole role = new XRole(); 
role.RoleName = roleName; 
try 
{ 
roleAccess.AddRole(role); 
success = true; 
rspText = "新增成功!"; 
} 
catch (Exception ex) 
{ 
success = false; 
rspText = ex.Message; 
} 
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}"; 
Response.Write(jsonStr); 
Response.End(); 
} 
/// <summary> 
/// 根据角色编号修改角色 
/// </summary> 
public void UpdateRoleById() 
{ 
string jsonStr = string.Empty; 
bool success = false; 
string rspText = string.Empty; 
string RoleId = Request["RoleId"].ToString(); 
string RoleName = Request["RoleName"].ToString(); 
XRole role = new XRole(); 
role.RoleId = Convert.ToInt32(RoleId); 
role.RoleName = RoleName; 
try 
{ 
roleAccess.UpdateRole(role); 
success = true; 
rspText = "修改成功!"; 
} 
catch (Exception ex) 
{ 
success = false; 
rspText = ex.Message; 
} 
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}"; 
Response.Write(jsonStr); 
Response.End(); 
} 
/// <summary> 
/// 根据ID删除用户 
/// </summary> 
public void DeleteRoleById() 
{ 
string jsonStr = string.Empty; 
bool success = false; 
string rspText = string.Empty; 
try 
{ 
int id = Convert.ToInt32(Request["Id"].ToString()); 
List<XRole> lsRole = roleAccess.DelRoleById(id); 
success = true; 
rspText = "success"; 
} 
catch (Exception ex) 
{ 
success = true; 
rspText = ex.Message; 
} 
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}"; 
Response.Write(jsonStr); 
Response.End(); 
}