3、Ext.NET 1.7 官方示例笔记

3、Ext.NET 1.7 官方示例笔记

表单【Form】，就是向客户收集资料的窗口，用户在表单填写好各种信息，然后提交到服务器，服务器接收并保存到数据库里。

表单的字段类型很多，我们从最简单的开始吧。

1.1 、先开始组合框吧(ComboBox)，组合框一般用在有限的选项的情况下，二是节省页面显示区域空间。

先来看下简单的字符串选择吧

1.2、内部选项，(所谓的写死)，对于比较固定的选项，写死更方便

        <ext:ComboBoxrunat="server" Editable="false"         EmptyText="Select "><Items><ext:ListItem Text="Alabama" Value="AL" /><ext:ListItem Text="Alaska" Value="AK" /></Items></ext:ComboBox>

Editable="false" 为不可编辑，只能选择这2项

1.3 、选项来自动态数据

        <ext:ComboBox ID="ComboBox1" runat="server" StoreID="Store1" //指定数据源对象Editable="false"DisplayField="state" //显示的字段ValueField="abbr" //值字段TypeAhead="true" Mode="Local"ForceSelection="true"EmptyText="Select "Resizable="true"SelectOnFocus="true"/>

//后端把数据绑定到ext:Store 后，前端就可以访问了

        <ext:Store ID="Store1" runat="server"><Reader><ext:ArrayReader><Fields><ext:RecordField Name="abbr" /><ext:RecordField Name="state" /><ext:RecordField Name="nick" /></Fields></ext:ArrayReader></Reader>            </ext:Store>

 //服务器数据

<script runat="server">protected void Page_Load(object sender, EventArgs e){this.Store1.DataSource = new object[]{new object[] { "AL", "Alabama", "The Heart of Dixie" },new object[] { "AK", "Alaska", "The Land of the Midnight Sun" },new object[] { "AZ", "Arizona", "The Grand Canyon State" },new object[] { "AR", "Arkansas", "The Natural State" },new object[] { "CA", "California", "The Golden State" },new object[] { "CO", "Colorado", "The Mountain State" },new object[] { "CT", "Connecticut", "The Constitution State" },new object[] { "DE", "Delaware", "The First State" },new object[] { "DC", "District of Columbia", "The Nation's Capital" },new object[] { "FL", "Florida", "The Sunshine State" },new object[] { "GA", "Georgia", "The Peach State" },new object[] { "HI", "Hawaii", "The Aloha State" },new object[] { "ID", "Idaho", "Famous Potatoes" },new object[] { "IL", "Illinois", "The Prairie State" },new object[] { "IN", "Indiana", "The Hospitality State" },new object[] { "IA", "Iowa", "The Corn State" },new object[] { "KS", "Kansas", "The Sunflower State" },new object[] { "KY", "Kentucky", "The Bluegrass State" },new object[] { "LA", "Louisiana", "The Bayou State" },new object[] { "ME", "Maine", "The Pine Tree State" },new object[] { "MD", "Maryland", "Chesapeake State" },new object[] { "MA", "Massachusetts", "The Spirit of America" },new object[] { "MI", "Michigan", "Great Lakes State" },new object[] { "MN", "Minnesota", "North Star State" },new object[] { "MS", "Mississippi", "Magnolia State" },new object[] { "MO", "Missouri", "Show Me State" },new object[] { "MT", "Montana", "Big Sky Country" },new object[] { "NE", "Nebraska", "Beef State" },new object[] { "NV", "Nevada", "Silver State" },new object[] { "NH", "New Hampshire", "Granite State" },new object[] { "NJ", "New Jersey", "Garden State" },new object[] { "NM", "New Mexico", "Land of Enchantment" },new object[] { "NY", "New York", "Empire State" },new object[] { "NC", "North Carolina", "First in Freedom" },new object[] { "ND", "North Dakota", "Peace Garden State" },new object[] { "OH", "Ohio", "The Heart of it All" },new object[] { "OK", "Oklahoma", "Oklahoma is OK" },new object[] { "OR", "Oregon", "Pacific Wonderland" },new object[] { "PA", "Pennsylvania", "Keystone State" },new object[] { "RI", "Rhode Island", "Ocean State" },new object[] { "SC", "South Carolina", "Nothing Could be Finer" },new object[] { "SD", "South Dakota", "Great Faces, Great Places" },new object[] { "TN", "Tennessee", "Volunteer State" },new object[] { "TX", "Texas", "Lone Star State" },new object[] { "UT", "Utah", "Salt Lake State" },new object[] { "VT", "Vermont", "Green Mountain State" },new object[] { "VA", "Virginia", "Mother of States" },new object[] { "WA", "Washington", "Green Tree State" },new object[] { "WV", "West Virginia", "Mountain State" },new object[] { "WI", "Wisconsin", "America's Dairyland" },new object[] { "WY", "Wyoming", "Like No Place on Earth" } };this.Store1.DataBind();}
</script>

1.4、可编辑的组合框，如果下拉选项不足以满足需求，且需要用户自己输入自己的选项，可以开启可编辑选项，在输入的同时，还可即时过滤下拉项。

        <ext:ComboBox runat="server" StoreID="Store1" //指定数据源Editable="true" //开启可编辑选项DisplayField="state" //显示字段ValueField="abbr" //值字段TypeAhead="true" //输入前缀检索Mode="Local"ForceSelection="true"TriggerAction="All"EmptyText="Select "SelectOnFocus="true"><SelectedItem Value="ID" /></ext:ComboBox>

1.1.1 SelectBox 选择框 

一个类似于HTML SELECT inpute的组件。支持单击并拖动列表，并在释放鼠标按钮时进行项目选择。

上面讲过了

1.1.2 MultiCombo 多选组合框，就是可以多选

        <ext:MultiCombo ID="Multi1" runat="server" Width="260"><Items><ext:ListItem Text="Item 1" Value="1" /><ext:ListItem Text="Item 2" Value="2" /><ext:ListItem Text="Item 3" Value="3" /><ext:ListItem Text="Item 4" Value="4" /><ext:ListItem Text="Item 5" Value="5" /></Items><SelectedItems>//初始值，已选项<ext:SelectedListItem Value="2" /> //可以使用值<ext:SelectedListItem Index="4" /> //也可以使用索引器</SelectedItems></ext:MultiCombo>

1.1.3 日期字段 - 区间，一个日期段选择

此示例演示了两个日期字段作为日期范围。选择初始日期将设置结束字段的最小值。选择结束日期可设置起始字段的最大值。

如果在'DateField1字段'中指定/选择了值，则'DateField2字段'不允许指定/选择'DateField1'条目之前的任何日期，反之亦然。

//客户端脚本

    <script type="text/javascript">var onKeyUp = function (field) {var v = this.RawValue()),field;if (this.startDateField) {field = Cmp(this.startDateField);field.setMaxValue();this.dateRangeMax = null;} else if (dDateField) {field = dDateField);field.setMinValue();this.dateRangeMin = null;}field.validate();};</script>

 //aspx页面

        <ext:Window runat="server" Width="350"Title="DateRange"Icon="Date"AutoHeight="true"Closable="false"Padding="5"Layout="Form"><Items><ext:DateField ID="DateField1" runat="server"Vtype="daterange"FieldLabel="To"AnchorHorizontal="100%"EnableKeyEvents="true">  <CustomConfig><ext:ConfigItem Name="endDateField" Value="#{DateField2}" Mode="Value" /></CustomConfig><Listeners><KeyUp Fn="onKeyUp" /></Listeners></ext:DateField><%--// Alternative syntax using custom config property attributes. 使用自定义配置属性属性的替代语法
<ext:DateField ID="DateField1" runat="server" FieldLabel="To"Vtype="daterange"AnchorHorizontal="100%"EnableKeyEvents="true" EndDateField="DateField2"><Listeners><KeyUp Fn="onKeyUp" /></Listeners></ext:DateField>--%><ext:DateField ID="DateField2"runat="server" Vtype="daterange"FieldLabel="From"AnchorHorizontal="100%"EnableKeyEvents="true">    <CustomConfig><ext:ConfigItem Name="startDateField" Value="#{DateField1}" Mode="Value" /></CustomConfig><Listeners><KeyUp Fn="onKeyUp" /></Listeners></ext:DateField><%--// Alternative syntax using custom config property attributes. <ext:DateField ID="DateField2" runat="server" Vtype="daterange"FieldLabel="From"AnchorHorizontal="100%"EnableKeyEvents="true"    StartDateField="DateField1"><Listeners><KeyUp Fn="onKeyUp" /></Listeners></ext:DateField>--%>  </Items>            </ext:Window>             

1.1.4 TriggerButtons 触发按钮，当选择了项后触发

<ext:ComboBox runat="server" MinChars="1"><Items><ext:ListItem Text="1" /><ext:ListItem Text="2" /><ext:ListItem Text="3" /><ext:ListItem Text="4" /><ext:ListItem Text="5" /></Items><Triggers><ext:FieldTrigger Icon="Clear" HideTrigger="true" /> //选择了项后添加清除按钮</Triggers><Listeners><Select Handler=&#iggers[0].show();" /><BeforeQuery Handler=&#iggers[0][ RawValue().toString().length == 0 ? 'hide' : 'show']();" /><TriggerClick Handler="if (index == 0) { this.clearValue(); iggers[0].hide(); }" /></Listeners>
</ext:ComboBox>

1.1.5  Items Actions  项操作，一些关于项操作的方法

<%@ Page Language="C#" %><%@ Import Namespace="System.Collections.Generic" %><%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %><script runat="server">     protected void Page_Load(object sender, EventArgs e){if (!X.IsAjaxRequest)//如果不是ajax请求，意思为第一次页面加载的时候执行！{List<object> list = new List<object> //初始化一个列表，一般从数据库获取{new {Text = "Text3", Value = 3},new {Text = "Text4", Value = 4},new {Text = "Text5", Value = 5}};this.Store1.DataSource = list; //把数据给 Store1 控件 ，并绑定this.Store1.DataBind();//请注意，内部项会在store的上面 this.ComboBox1.Items.Insert(0, new Ext.Net.ListItem("None", "-"));//在code-behind用代码直接在combobox插入一项this.ComboBox1.SelectedItem.Value = "-";//初始化选择项}}
    //前端js可以直接调用code-behind方法插入一些值到comboboxprotected void InsertRecord(object sender, DirectEventArgs e){Dictionary<string, object> values = new Dictionary<string, object>(2);values.Add("Text", "Text0");values.Add("Value", "0");this.ComboBox1.InsertRecord(1, values);this.ComboBox1.SelectedItem.Value = "0";}protected void InsertRecord2(object sender, DirectEventArgs e){this.ComboBox2.InsertItem(0, "Text0", "0");this.ComboBox2.SelectedItem.Value = "0";}
</script> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"".dtd"><html xmlns="">
<head runat="server"><title>Items Actions - Ext.NET Examples</title><link href="../../../../resources/css/examples.css" rel="stylesheet" type="text/css" />
</head>
<body><form runat="server"><ext:ResourceManager runat="server" /><ext:Store runat="server" ID="Store1">          <Reader><ext:JsonReader IDProperty="Value"><Fields><ext:RecordField Name="Text" /><ext:RecordField Name="Value" /></Fields></ext:JsonReader></Reader></ext:Store><p>1. Combo with a store and inner items (merge mode)</p><br /><ext:ComboBox ID="ComboBox1" runat="server" StoreID="Store1" DisplayField="Text" ValueField="Value"Mode="Local"><Items><ext:ListItem Text="Text2" Value="2" /></Items><Triggers><ext:FieldTrigger Icon="Clear" Qtip="Remove selected" />//触发器</Triggers><Listeners><TriggerClick Handler=&#Value());this.clearValue();" />
                //监@听#器，监/听/触发器的动作，第一个方法，是获取值，然后把他从列表移除，第二个清除已经选的项</Listeners></ext:ComboBox><br /><ext:Panel ID="Panel1" runat="server" Border="false"><Items><ext:TableLayout ID="TableLayout1" runat="server" Columns="2">//用来布局的<Cells><ext:Cell><ext:Button ID="Button1" runat="server" Text="从客户端插入项"><Listeners><Click Handler="#{ComboBox1}.insertRecord(1, {Text:'Text1', Value:1});#{ComboBox1}.setValue(1);" />
                                    <%--  --%></Listeners></ext:Button></ext:Cell><ext:Cell><ext:Button ID="Button2" runat="server" Text="从服务端插入项"><DirectEvents><Click OnEvent="InsertRecord" /> //InsertRecore 方法在上面的 script=server</DirectEvents></ext:Button></ext:Cell></Cells></ext:TableLayout></Items></ext:Panel><br /><br /><p>2. Combo with inner items</p><br /><%-- 请注意，插入项方法也能工作在内选项里 the insertRecord function works with inner items also --%><ext:ComboBox ID="ComboBox2" runat="server"><Items><ext:ListItem Text="Text2" Value="2" /><ext:ListItem Text="Text3" Value="3" /><ext:ListItem Text="Text4" Value="4" /><ext:ListItem Text="Text5" Value="5" />                </Items><Triggers><ext:FieldTrigger Icon="Clear" Qtip="Remove selected" /></Triggers><Listeners><TriggerClick Handler=&#Value());this.clearValue();" /></Listeners></ext:ComboBox><br /><ext:Panel ID="Panel2" runat="server" Border="false"><Items><ext:TableLayout ID="TableLayout2" runat="server" Columns="2"><Cells><ext:Cell><ext:Button ID="Button3" runat="server" Text="Insert: client side"><Listeners><Click Handler="#{ComboBox2}.insertItem(0, 'Text1', 1);#{ComboBox2}.setValue(1);" /></Listeners></ext:Button></ext:Cell><ext:Cell><ext:Button ID="Button4" runat="server" Text="Insert: server side"><DirectEvents><Click OnEvent="InsertRecord2" /></DirectEvents></ext:Button></ext:Cell></Cells></ext:TableLayout></Items></ext:Panel><br /><h3>其他一些方法</h3><ul><li>addRecord: function (values)</li><li>addItem: function (text, value)</li><li>insertRecord: function (rowIndex, values)</li><li>insertItem: function (rowIndex, text, value)</li><li>removeByField: function (field, value)</li><li>removeByIndex: function (index)</li><li>removeByValue: function (value)</li><li>removeByText: function (text)</li></ul></form>
</body>
</html>

1.3  DropDownField  下拉字段域 

好多。。。 待续。。

转载于:.html